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UNION PACIFIC CORP

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UNION PACIFIC CORP

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For purposes of this report, unless the context otherwise requires, all references herein to the “Corporation”, “UPC”, “we”, “us”, and “our” mean Union Pacific Corporation and its subsidiaries, including Union Pacific Railroad Company, which will be separately referred to herein as “UPRR” or the “Railroad”.  1. Basis of Presentation  Our Condensed Consolidated Financial Statements are unaudited and reflect all adjustments (consisting only of normal and recurring adjustments) that are, in the opinion of management, necessary for their fair presentation in conformity with accounting principles generally accepted in the United States of America (GAAP). Our Consolidated Statement of Financial Position at December 31, 2010, is derived from audited financial statements. This Quarterly Report on Form 10-Q should be read in conjunction with our Consolidated Financial Statements and notes thereto contained in our 2010 Annual Report on Form 10-K. The results of operations for the six months ended June 30, 2011, are not necessarily indicative of the results for the entire year ending December 31, 2011.  The Condensed Consolidated Financial Statements are presented in accordance with accounting principles generally accepted in the United States of America as codified in the Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC).

2. Accounting Pronouncements  In June 2011, the FASB issued Accounting Standards Update No. 2011-05, Comprehensive Income (Topic 220): Presentation of Comprehensive Income (ASU 2011-05). ASU 2011-05 will require companies to present the components of net income and other comprehensive income either as one continuous statement or as two consecutive statements. It eliminates the option to present components of other comprehensive income as part of the statement of changes in stockholders' equity. The standard does not change the items which must be reported in other comprehensive income, how such items are measured or when they must be reclassified to net income. This standard is effective for interim and annual periods beginning after December 15, 2011. Because this ASU impacts presentation only, it will have no effect on our financial condition, results of operations or cash flows.

3. Operations and Segmentation  The Railroad, along with its subsidiaries and rail affiliates, is our one reportable operating segment. Although revenue is analyzed by commodity group, we analyze the net financial results of the Railroad as one segment due to the integrated nature of our rail network. The following table provides freight revenue by commodity group:<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Three Months Ended </td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Six Months Ended </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td><td style="width: 19px; text-align:right;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Millions </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">2011</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">2010</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">2011</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">2010</td></tr><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Agricultural </td><td style="width: 12px; 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text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 1,179</td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Energy </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 950</td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> 836</td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 1,902</td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> 1,680</td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Industrial Products </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 803</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 692</td><td style="width: 19px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 1,493</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 1,290</td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Intermodal </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 909</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> 804</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 1,702</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> 1,495</td></tr><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Total freight revenues </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 4,595</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 3,956</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 8,843</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 7,711</td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Other revenues </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 263</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> 226</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 505</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> 436</td></tr><tr style="height: 24px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Total operating revenues </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 4,858</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 4,182</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 9,348</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 8,147</td></tr></table></div>Although our revenues are principally derived from customers domiciled in the U.S., the ultimate points of origination or destination for some products transported are outside the U.S.

The following table provides freight revenue by commodity group:<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Three Months Ended </td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Six Months Ended </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td><td style="width: 19px; text-align:right;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Millions </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">2011</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">2010</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">2011</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">2010</td></tr><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Agricultural </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 849</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 698</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 1,656</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 1,428</td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Automotive </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 381</td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> 334</td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 723</td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> 639</td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Chemicals </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 703</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 592</td><td style="width: 19px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 1,367</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 1,179</td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Energy </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 950</td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> 836</td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 1,902</td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> 1,680</td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Industrial Products </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 803</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 692</td><td style="width: 19px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 1,493</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 1,290</td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Intermodal </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 909</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> 804</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 1,702</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> 1,495</td></tr><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Total freight revenues </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 4,595</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 3,956</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 8,843</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 7,711</td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Other revenues </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 263</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> 226</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 505</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> 436</td></tr><tr style="height: 24px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Total operating revenues </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 4,858</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 4,182</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 9,348</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 8,147</td></tr></table></div> 849000000 381000000 703000000 950000000 803000000 909000000 698000000 334000000 592000000 836000000 692000000 804000000 1656000000 723000000 1367000000 1902000000 1493000000 1702000000 1428000000 639000000 1179000000 1680000000 1290000000 1495000000

4. Stock-Based Compensation  We have several stock-based compensation plans under which employees and non-employee directors receive stock options, nonvested retention shares, and nonvested stock units. We refer to the nonvested shares and stock units collectively as “retention awards”. We have elected to issue treasury shares to cover option exercises and stock unit vestings, while new shares are issued when retention shares are granted. Information regarding stock-based compensation appears in the table below: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Three Months Ended</td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Six Months Ended </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:right;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td><td style="width: 19px; text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Millions </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011</td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011</td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010</td></tr><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Stock-based compensation, before tax:</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> </td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Stock options </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 4</td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> 5</td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 9</td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> 9</td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Retention awards </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 17</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 16</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 34</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 29</td></tr><tr style="height: 24px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Total stock-based compensation, before tax </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 21</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> 21</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 43</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> 38</td></tr><tr style="height: 24px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Excess tax benefits from equity compensation plans </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 29</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 2</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 67</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 11</td></tr></table></div>Stock Options – We estimate the fair value of our stock option awards using the Black-Scholes option pricing model. The table below shows the year-to-date weighted-average assumptions used for valuation purposes: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 490px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:490px;"> Weighted-Average Assumptions</td><td style="width: 12px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">2011</td><td style="width: 29px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">2010</td></tr><tr style="height: 16px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Risk-free interest rate </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">2.3%</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">2.4%</td></tr><tr style="height: 16px"><td style="width: 490px; text-align:left;border-color:#000000;min-width:490px;"> Dividend yield </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">1.6%</td><td style="width: 29px; text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">1.8%</td></tr><tr style="height: 16px"><td style="width: 490px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Expected life (years) </td><td style="width: 12px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">5.3 </td><td style="width: 29px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">5.4 </td></tr><tr style="height: 16px"><td style="width: 490px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:490px;"> Volatility</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">35.9%</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">35.2%</td></tr><tr style="height: 24px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Weighted-average grant-date fair value of options granted </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">28.45 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">18.26 </td></tr></table></div>The risk-free rate is based on the U.S. Treasury yield curve in effect at the time of grant; the dividend yield is calculated as the ratio of dividends paid per share of common stock to the stock price on the date of grant; the expected life is based on historical and expected exercise behavior; and volatility is based on the historical volatility of our stock price over the expected life of the option. A summary of stock option activity during the six months ended June 30, 2011 is presented below:  <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 48px"><td style="width: 259px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:259px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">Shares (thous.)</td><td colspan="2" style="width: 97px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:97px;">Weighted-Average Exercise Price</td><td style="width: 115px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:115px;">Weighted-Average Remaining Contractual Term</td><td colspan="2" style="width: 93px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:93px;">Aggregate Intrinsic Value (millions)</td></tr><tr style="height: 16px"><td style="width: 259px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:259px;"> Outstanding at January 1, 2011</td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:60px;">9,815 </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">$</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 44.77</td><td style="width: 115px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:115px;">5.2 yrs.</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;">$</td><td style="width: 41px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:41px;"> 470</td></tr><tr style="height: 16px"><td style="width: 259px; text-align:left;border-color:#000000;min-width:259px;"> Granted </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;">618 </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 52px; text-align:right;border-color:#000000;min-width:52px;"> 93.60</td><td style="width: 115px; text-align:right;border-color:#000000;min-width:115px;">N/A</td><td style="width: 52px; text-align:right;border-color:#000000;min-width:52px;"> </td><td style="width: 41px; text-align:right;border-color:#000000;min-width:41px;">N/A</td></tr><tr style="height: 16px"><td style="width: 259px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:259px;"> Exercised </td><td style="width: 60px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:60px;"> (2,659)</td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> </td><td style="width: 52px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 37.98</td><td style="width: 115px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:115px;">N/A</td><td style="width: 52px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> </td><td style="width: 41px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:41px;">N/A</td></tr><tr style="height: 16px"><td style="width: 259px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:259px;"> Forfeited or expired </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"> (40)</td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 52px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:52px;"> 63.11</td><td style="width: 115px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:115px;">N/A</td><td style="width: 52px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:52px;"> </td><td style="width: 41px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:41px;">N/A</td></tr><tr style="height: 24px"><td style="width: 259px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:259px;"> Outstanding at June 30, 2011</td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:60px;">7,734 </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">$</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 50.91</td><td style="width: 115px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:115px;">5.7 yrs.</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;">$</td><td style="width: 41px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:41px;"> 414</td></tr><tr style="height: 16px"><td style="width: 259px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:259px;"> Vested or expected to vest at June 30, 2011</td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">7,645 </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">$</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:52px;"> 50.71</td><td style="width: 115px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:115px;">5.7 yrs.</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:52px;">$</td><td style="width: 41px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:41px;"> 410</td></tr><tr style="height: 24px"><td style="width: 259px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:259px;"> Options exercisable at June 30, 2011</td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:60px;">6,077 </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">$</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 46.12</td><td style="width: 115px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:115px;">4.9 yrs.</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;">$</td><td style="width: 41px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:41px;"> 354</td></tr></table></div>Stock options are granted at the closing price on the date of grant, have ten-year contractual terms, and vest no later than three years from the date of grant. None of the stock options outstanding at June 30, 2011 are subject to performance or market-based vesting conditions. At June 30, 2011, there was $25 million of unrecognized compensation expense related to nonvested stock options, which is expected to be recognized over a weighted-average period of 1.2 years. Additional information regarding stock option exercises appears in the table below:<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Three Months Ended </td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Six Months Ended</td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td><td style="width: 19px; text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Millions</td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td></tr><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Intrinsic value of stock options exercised</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">76 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">8 </td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">165 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">26 </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Cash received from option exercises</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">44 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">11 </td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">106 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">34 </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Treasury shares repurchased for employee payroll taxes</td><td style="width: 12px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> (16)</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> (2)</td><td style="width: 19px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> (41)</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> (8)</td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Tax benefit realized from option exercises</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">29 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">3 </td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">63 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">10 </td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Aggregate grant-date fair value of stock options vested</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 1</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> -</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">19 </td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">19 </td></tr></table></div>Retention Awards – The fair value of retention awards is based on the closing price of the stock on the grant date. Dividends and dividend equivalents are paid to participants during the vesting periods. Changes in our retention awards during the six months ended June 30, 2011 were as follows:<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 32px"><td style="width: 408px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:408px;"> </td><td style="width: 72px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:72px;">Shares (thous.)</td><td colspan="2" style="width: 144px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:144px;">Weighted-Average Grant-Date Fair Value</td></tr><tr style="height: 16px"><td style="width: 408px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:408px;"> Nonvested at January 1, 2011</td><td style="width: 72px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:72px;">2,638 </td><td style="width: 93px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:93px;">$</td><td style="width: 51px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:51px;"> 54.01</td></tr><tr style="height: 16px"><td style="width: 408px; text-align:left;border-color:#000000;min-width:408px;"> Granted </td><td style="width: 72px; text-align:right;border-color:#000000;min-width:72px;">528 </td><td style="width: 93px; text-align:right;border-color:#000000;min-width:93px;"> </td><td style="width: 51px; text-align:right;border-color:#000000;min-width:51px;"> 93.68</td></tr><tr style="height: 16px"><td style="width: 408px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:408px;"> Vested </td><td style="width: 72px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:72px;"> (527)</td><td style="width: 93px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:93px;"> </td><td style="width: 51px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:51px;"> 48.58</td></tr><tr style="height: 16px"><td style="width: 408px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:408px;"> Forfeited </td><td style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:72px;"> (54)</td><td style="width: 93px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:93px;"> </td><td style="width: 51px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:51px;"> 57.46</td></tr><tr style="height: 24px"><td style="width: 408px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:408px;"> Nonvested at June 30, 2011</td><td style="width: 72px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:72px;">2,585 </td><td style="width: 93px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:93px;">$</td><td style="width: 51px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:51px;"> 63.15</td></tr></table></div>Retention awards are granted at no cost to the employee or non-employee director and vest over periods lasting up to four years. At June 30, 2011, there was $90 million of total unrecognized compensation expense related to nonvested retention awards, which is expected to be recognized over a weighted-average period of 2 years. Performance Retention Awards – In February 2011, our Board of Directors approved performance stock unit grants. Other than different performance targets, the basic terms of these performance stock units are identical to those granted in February 2009 and February 2010, including using annual return on invested capital (ROIC) as the performance measure. We define ROIC as net operating profit adjusted for interest expense (including interest on the present value of operating leases) and taxes on interest divided by average invested capital adjusted for the present value of operating leases. Stock units awarded to selected employees under these grants are subject to continued employment for 37 months and the attainment of certain levels of ROIC. We expense the fair value of the units that are probable of being earned based on our forecasted ROIC over the 3-year performance period. We measure the fair value of these performance stock units based upon the closing price of the underlying common stock as of the date of grant, reduced by the present value of estimated future dividends. Dividend equivalents are paid to participants only after the units are earned. The assumptions used to calculate the present value of estimated future dividends related to the February 2011 grant were as follows:<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 552px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:552px;"> </td><td colspan="2" style="width: 72px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:72px;">2011</td></tr><tr style="height: 16px"><td style="width: 552px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:552px;"> Dividend per share for the quarter</td><td style="width: 27px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:27px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 0.38</td></tr><tr style="height: 16px"><td style="width: 552px; border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:552px;"> Risk-free interest rate at date of grant </td><td style="width: 27px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:27px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:45px;">1.2%</td></tr></table></div>Changes in our performance retention awards during the six months ended June 30, 2011 were as follows:  <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 32px"><td style="width: 408px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:408px;"> </td><td style="width: 72px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:72px;">Shares (thous.)</td><td colspan="2" style="width: 144px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:144px;">Weighted-Average Grant-Date Fair Value</td></tr><tr style="height: 16px"><td style="width: 408px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:408px;"> Nonvested at January 1, 2011</td><td style="width: 72px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:72px;">1,151 </td><td style="width: 93px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:93px;">$</td><td style="width: 51px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:51px;"> 53.93</td></tr><tr style="height: 16px"><td style="width: 408px; text-align:left;border-color:#000000;min-width:408px;"> Granted </td><td style="width: 72px; text-align:right;border-color:#000000;min-width:72px;">376 </td><td style="width: 93px; text-align:right;border-color:#000000;min-width:93px;"> </td><td style="width: 51px; text-align:right;border-color:#000000;min-width:51px;"> 89.87</td></tr><tr style="height: 16px"><td style="width: 408px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:408px;"> Vested </td><td style="width: 72px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:72px;"> (194)</td><td style="width: 93px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:93px;"> </td><td style="width: 51px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:51px;"> 60.20</td></tr><tr style="height: 16px"><td style="width: 408px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:408px;"> Forfeited </td><td style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:72px;"> (116)</td><td style="width: 93px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:93px;"> </td><td style="width: 51px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:51px;"> 59.64</td></tr><tr style="height: 24px"><td style="width: 408px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:408px;"> Nonvested at June 30, 2011</td><td style="width: 72px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:72px;">1,217 </td><td style="width: 93px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:93px;">$</td><td style="width: 51px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:51px;"> 63.49</td></tr></table></div>At June 30, 2011, there was $45 million of total unrecognized compensation expense related to nonvested performance retention awards, which is expected to be recognized over a weighted-average period of 1.6 years. A portion of this expense is subject to achievement of the ROIC levels established for the performance stock unit grants.

Information regarding stock-based compensation appears in the table below:<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Three Months Ended</td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Six Months Ended </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:right;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td><td style="width: 19px; text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Millions </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011</td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011</td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010</td></tr><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Stock-based compensation, before tax:</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> </td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Stock options </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 4</td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> 5</td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 9</td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> 9</td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Retention awards </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 17</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 16</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 34</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 29</td></tr><tr style="height: 24px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Total stock-based compensation, before tax </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 21</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> 21</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 43</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> 38</td></tr><tr style="height: 24px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Excess tax benefits from equity compensation plans </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 29</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 2</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 67</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 11</td></tr></table></div>

9000000

34000000

43000000

67000000

4000000

17000000

21000000

29000000

5000000

16000000

21000000

2000000

9000000

29000000

38000000

11000000

The table below shows the year-to-date weighted-average assumptions used for valuation purposes:<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 490px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:490px;"> Weighted-Average Assumptions</td><td style="width: 12px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">2011</td><td style="width: 29px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">2010</td></tr><tr style="height: 16px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Risk-free interest rate </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">2.3%</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">2.4%</td></tr><tr style="height: 16px"><td style="width: 490px; text-align:left;border-color:#000000;min-width:490px;"> Dividend yield </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">1.6%</td><td style="width: 29px; text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">1.8%</td></tr><tr style="height: 16px"><td style="width: 490px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Expected life (years) </td><td style="width: 12px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">5.3 </td><td style="width: 29px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">5.4 </td></tr><tr style="height: 16px"><td style="width: 490px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:490px;"> Volatility</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">35.9%</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">35.2%</td></tr><tr style="height: 24px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Weighted-average grant-date fair value of options granted </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">28.45 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">18.26 </td></tr></table></div>

0.023

0.016

0.024

0.018

5.30

5.40

0.359

0.352

28.45

18.26

A summary of stock option activity during the six months ended June 30, 2011 is presented below:  <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 48px"><td style="width: 259px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:259px;"> </td><td style="width: 60px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">Shares (thous.)</td><td colspan="2" style="width: 97px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:97px;">Weighted-Average Exercise Price</td><td style="width: 115px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:115px;">Weighted-Average Remaining Contractual Term</td><td colspan="2" style="width: 93px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:93px;">Aggregate Intrinsic Value (millions)</td></tr><tr style="height: 16px"><td style="width: 259px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:259px;"> Outstanding at January 1, 2011</td><td style="width: 60px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:60px;">9,815 </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">$</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 44.77</td><td style="width: 115px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:115px;">5.2 yrs.</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;">$</td><td style="width: 41px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:41px;"> 470</td></tr><tr style="height: 16px"><td style="width: 259px; text-align:left;border-color:#000000;min-width:259px;"> Granted </td><td style="width: 60px; text-align:right;border-color:#000000;min-width:60px;">618 </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 52px; text-align:right;border-color:#000000;min-width:52px;"> 93.60</td><td style="width: 115px; text-align:right;border-color:#000000;min-width:115px;">N/A</td><td style="width: 52px; text-align:right;border-color:#000000;min-width:52px;"> </td><td style="width: 41px; text-align:right;border-color:#000000;min-width:41px;">N/A</td></tr><tr style="height: 16px"><td style="width: 259px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:259px;"> Exercised </td><td style="width: 60px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:60px;"> (2,659)</td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> </td><td style="width: 52px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 37.98</td><td style="width: 115px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:115px;">N/A</td><td style="width: 52px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> </td><td style="width: 41px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:41px;">N/A</td></tr><tr style="height: 16px"><td style="width: 259px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:259px;"> Forfeited or expired </td><td style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;"> (40)</td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 52px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:52px;"> 63.11</td><td style="width: 115px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:115px;">N/A</td><td style="width: 52px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:52px;"> </td><td style="width: 41px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:41px;">N/A</td></tr><tr style="height: 24px"><td style="width: 259px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:259px;"> Outstanding at June 30, 2011</td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:60px;">7,734 </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">$</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 50.91</td><td style="width: 115px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:115px;">5.7 yrs.</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;">$</td><td style="width: 41px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:41px;"> 414</td></tr><tr style="height: 16px"><td style="width: 259px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:259px;"> Vested or expected to vest at June 30, 2011</td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">7,645 </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">$</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:52px;"> 50.71</td><td style="width: 115px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:115px;">5.7 yrs.</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:52px;">$</td><td style="width: 41px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:41px;"> 410</td></tr><tr style="height: 24px"><td style="width: 259px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:259px;"> Options exercisable at June 30, 2011</td><td style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:60px;">6,077 </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">$</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 46.12</td><td style="width: 115px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:115px;">4.9 yrs.</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;">$</td><td style="width: 41px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:41px;"> 354</td></tr></table></div>

470000000

414000000

410000000

354000000

5.7

4.9

93.60

37.98

63.11

50.91

50.71

46.12

9815000

-2659000

-40000

7734000

7645000

6077000

44.77

618000

5.2

Additional information regarding stock option exercises appears in the table below:<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Three Months Ended </td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Six Months Ended</td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td><td style="width: 19px; text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Millions</td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td></tr><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Intrinsic value of stock options exercised</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">76 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">8 </td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">165 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">26 </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Cash received from option exercises</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">44 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">11 </td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">106 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">34 </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Treasury shares repurchased for employee payroll taxes</td><td style="width: 12px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> (16)</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> (2)</td><td style="width: 19px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> (41)</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> (8)</td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Tax benefit realized from option exercises</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">29 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">3 </td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">63 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">10 </td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Aggregate grant-date fair value of stock options vested</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 1</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> -</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">19 </td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">19 </td></tr></table></div>

76000000

44000000

-16000000

29000000

1000000

8000000

11000000

-2000000

3000000

165000000

106000000

-41000000

63000000

19000000

26000000

34000000

-8000000

10000000

19000000 Changes in our retention awards during the six months ended June 30, 2011 were as follows:<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 32px"><td style="width: 408px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:408px;"> </td><td style="width: 72px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:72px;">Shares (thous.)</td><td colspan="2" style="width: 144px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:144px;">Weighted-Average Grant-Date Fair Value</td></tr><tr style="height: 16px"><td style="width: 408px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:408px;"> Nonvested at January 1, 2011</td><td style="width: 72px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:72px;">2,638 </td><td style="width: 93px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:93px;">$</td><td style="width: 51px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:51px;"> 54.01</td></tr><tr style="height: 16px"><td style="width: 408px; text-align:left;border-color:#000000;min-width:408px;"> Granted </td><td style="width: 72px; text-align:right;border-color:#000000;min-width:72px;">528 </td><td style="width: 93px; text-align:right;border-color:#000000;min-width:93px;"> </td><td style="width: 51px; text-align:right;border-color:#000000;min-width:51px;"> 93.68</td></tr><tr style="height: 16px"><td style="width: 408px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:408px;"> Vested </td><td style="width: 72px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:72px;"> (527)</td><td style="width: 93px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:93px;"> </td><td style="width: 51px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:51px;"> 48.58</td></tr><tr style="height: 16px"><td style="width: 408px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:408px;"> Forfeited </td><td style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:72px;"> (54)</td><td style="width: 93px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:93px;"> </td><td style="width: 51px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:51px;"> 57.46</td></tr><tr style="height: 24px"><td style="width: 408px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:408px;"> Nonvested at June 30, 2011</td><td style="width: 72px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:72px;">2,585 </td><td style="width: 93px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:93px;">$</td><td style="width: 51px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:51px;"> 63.15</td></tr></table></div>

2638000

-54000

2585000

54.01

93.68

48.58

57.46

63.15

528000

-527000

Stock units awarded to selected employees under these grants are subject to continued employment for 37 months and the attainment of certain levels of ROIC. The assumptions used to calculate the present value of estimated future dividends related to the February 2011 grant were as follows:<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 552px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:552px;"> </td><td colspan="2" style="width: 72px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:72px;">2011</td></tr><tr style="height: 16px"><td style="width: 552px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:552px;"> Dividend per share for the quarter</td><td style="width: 27px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:27px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 0.38</td></tr><tr style="height: 16px"><td style="width: 552px; border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:552px;"> Risk-free interest rate at date of grant </td><td style="width: 27px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:27px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:45px;">1.2%</td></tr></table></div> 0.012 0.38

Changes in our performance retention awards during the six months ended June 30, 2011 were as follows:  <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 32px"><td style="width: 408px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:408px;"> </td><td style="width: 72px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:72px;">Shares (thous.)</td><td colspan="2" style="width: 144px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:144px;">Weighted-Average Grant-Date Fair Value</td></tr><tr style="height: 16px"><td style="width: 408px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:408px;"> Nonvested at January 1, 2011</td><td style="width: 72px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:72px;">1,151 </td><td style="width: 93px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:93px;">$</td><td style="width: 51px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:51px;"> 53.93</td></tr><tr style="height: 16px"><td style="width: 408px; text-align:left;border-color:#000000;min-width:408px;"> Granted </td><td style="width: 72px; text-align:right;border-color:#000000;min-width:72px;">376 </td><td style="width: 93px; text-align:right;border-color:#000000;min-width:93px;"> </td><td style="width: 51px; text-align:right;border-color:#000000;min-width:51px;"> 89.87</td></tr><tr style="height: 16px"><td style="width: 408px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:408px;"> Vested </td><td style="width: 72px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:72px;"> (194)</td><td style="width: 93px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:93px;"> </td><td style="width: 51px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:51px;"> 60.20</td></tr><tr style="height: 16px"><td style="width: 408px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:408px;"> Forfeited </td><td style="width: 72px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:72px;"> (116)</td><td style="width: 93px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:93px;"> </td><td style="width: 51px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:51px;"> 59.64</td></tr><tr style="height: 24px"><td style="width: 408px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:408px;"> Nonvested at June 30, 2011</td><td style="width: 72px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:72px;">1,217 </td><td style="width: 93px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:93px;">$</td><td style="width: 51px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:51px;"> 63.49</td></tr></table></div>

1151000

-116000

1217000

53.93

89.87

60.20

59.64

63.49

-194000

376000

25000000

1.2

90000000

45000000

1.6

5. Retirement Plans Pension and Other Postretirement Benefits  Pension Plans – We provide defined benefit retirement income to eligible non-union employees through qualified and non-qualified (supplemental) pension plans. Qualified and non-qualified pension benefits are based on years of service and the highest compensation during the latest years of employment, with specific reductions made for early retirements. Other Postretirement Benefits (OPEB) – We provide medical and life insurance benefits for eligible retirees. These benefits are funded as medical claims and life insurance premiums are paid. Expense  Both pension and OPEB expense are determined based upon the annual service cost of benefits (the actuarial cost of benefits earned during a period) and the interest cost on those liabilities, less the expected return on plan assets. The expected long-term rate of return on plan assets is applied to a calculated value of plan assets that recognizes changes in fair value over a five-year period. This practice is intended to reduce year-to-year volatility in pension expense, but it can have the effect of delaying the recognition of differences between actual returns on assets and expected returns based on long-term rate of return assumptions. Differences in actual experience in relation to assumptions are not recognized in net income immediately, but are deferred and, if necessary, amortized as pension or OPEB expense.  The components of our net periodic pension cost were as follows: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Three Months Ended </td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Six Months Ended </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td><td style="width: 19px; text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Millions </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td></tr><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Service cost</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">11 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">11 </td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">22 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">22 </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Interest cost</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">36 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">35 </td><td style="width: 19px; text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">72 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">70 </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Expected return on plan assets</td><td style="width: 12px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> (45)</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> (44)</td><td style="width: 19px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> (90)</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> (89)</td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Amortization of:</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 19px; text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Prior service cost</td><td style="width: 12px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> -</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">1</td><td style="width: 19px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">1 </td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">2 </td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Actuarial loss</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">18 </td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">10 </td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">35 </td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">21 </td></tr><tr style="height: 24px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Net periodic pension cost</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">20 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">13 </td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">40 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">26 </td></tr></table></div>The components of our net periodic OPEB cost/(benefit) were as follows: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Three Months Ended </td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Six Months Ended</td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td><td style="width: 19px; text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Millions </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td></tr><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Service cost</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> -</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> -</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 1</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">1 </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Interest cost</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">4 </td><td style="width: 29px; text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">4 </td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">8 </td><td style="width: 29px; text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">8 </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Amortization of:</td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> </td><td style="width: 19px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Prior service (credit)</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> (9)</td><td style="width: 29px; text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> (11)</td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> (18)</td><td style="width: 29px; text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> (22)</td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Actuarial loss</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">4 </td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">4 </td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">7 </td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">7 </td></tr><tr style="height: 24px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:336px;"> Net periodic OPEB benefit</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:48px;"> (1)</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:45px;"> (3)</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:48px;"> (2)</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:45px;"> (6)</td></tr></table></div>Cash Contributions  For the six months ended June 30, 2011, we did not make any cash contributions to the qualified pension plan. Any additional contributions made in the second half of the year will be based on cash generated from operations and financial market considerations.Cash Contributions  For the six months ended June 30, 2011, we did not make any cash contributions to the qualified pension plan. Any additional contributions made in the second half of the year will be based on cash generated from operations and financial market considerations. Our policy with respect to funding the qualified plans is to fund at least the minimum required by law and not more than the maximum amount deductible for tax purposes. At June 30, 2011, we do not have minimum funding requirements for 2011.

The components of our net periodic pension cost were as follows: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Three Months Ended </td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Six Months Ended </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td><td style="width: 19px; text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Millions </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td></tr><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Service cost</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">11 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">11 </td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">22 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">22 </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Interest cost</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">36 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">35 </td><td style="width: 19px; text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">72 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">70 </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Expected return on plan assets</td><td style="width: 12px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> (45)</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> (44)</td><td style="width: 19px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> (90)</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> (89)</td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Amortization of:</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 19px; text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Prior service cost</td><td style="width: 12px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> -</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">1</td><td style="width: 19px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">1 </td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">2 </td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Actuarial loss</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">18 </td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">10 </td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">35 </td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">21 </td></tr><tr style="height: 24px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Net periodic pension cost</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">20 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">13 </td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">40 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">26 </td></tr></table></div>The components of our net periodic OPEB cost/(benefit) were as follows: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Three Months Ended </td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Six Months Ended</td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td><td style="width: 19px; text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Millions </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td></tr><tr style="height: 16px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Service cost</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> -</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> -</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 1</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">1 </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Interest cost</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">4 </td><td style="width: 29px; text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">4 </td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">8 </td><td style="width: 29px; text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">8 </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Amortization of:</td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> </td><td style="width: 19px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> </td></tr><tr style="height: 16px"><td style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Prior service (credit)</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> (9)</td><td style="width: 29px; text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> (11)</td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> (18)</td><td style="width: 29px; text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> (22)</td></tr><tr style="height: 16px"><td style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Actuarial loss</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">4 </td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">4 </td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">7 </td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">7 </td></tr><tr style="height: 24px"><td style="width: 336px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:336px;"> Net periodic OPEB benefit</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:48px;"> (1)</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:45px;"> (3)</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:48px;"> (2)</td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:45px;"> (6)</td></tr></table></div>

11000000

36000000

-45000000

18000000

20000000

11000000

35000000

-44000000

1000000

10000000

13000000

22000000

72000000

-90000000

1000000

35000000

40000000

22000000

70000000

-89000000

2000000

21000000

26000000

4000000

-9000000

4000000

-1000000

1000000

8000000

-18000000

7000000

-2000000

4000000

-11000000

4000000

-3000000

1000000

8000000

-22000000

7000000

-6000000

6. Other Income  Other income included the following:<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 29px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 307px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:307px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Three Months Ended</td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Six Months Ended</td></tr><tr style="height: 16px"><td style="width: 29px; text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 307px; text-align:left;border-color:#000000;min-width:307px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td><td style="width: 19px; text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td></tr><tr style="height: 16px"><td colspan="2" style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Millions</td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td></tr><tr style="height: 16px"><td colspan="2" style="width: 336px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Rental income</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">19 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">21 </td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">39 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">41 </td></tr><tr style="height: 16px"><td colspan="2" style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Net gain on non-operating asset dispositions</td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">4 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">2 </td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">5 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">8 </td></tr><tr style="height: 16px"><td colspan="2" style="width: 336px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Interest income</td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">1 </td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">1 </td><td style="width: 19px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">2 </td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">2 </td></tr><tr style="height: 16px"><td colspan="2" style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Early extinguishment of debt</td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> -</td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> -</td><td style="width: 19px; text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> -</td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> (16)</td></tr><tr style="height: 16px"><td colspan="2" style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Non-operating environmental costs and other</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">2 </td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> (5)</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> (5)</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> (15)</td></tr><tr style="height: 24px"><td colspan="2" style="width: 336px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:336px;"> Total</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:48px;">26 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:45px;">19 </td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:48px;">41 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:45px;">20 </td></tr><tr style="height: 6px"><td style="width: 29px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 307px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:307px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:45px;"> </td></tr></table></div>

Other income included the following:<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 29px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 307px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:307px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Three Months Ended</td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Six Months Ended</td></tr><tr style="height: 16px"><td style="width: 29px; text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 307px; text-align:left;border-color:#000000;min-width:307px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td><td style="width: 19px; text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td></tr><tr style="height: 16px"><td colspan="2" style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:336px;"> Millions</td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td></tr><tr style="height: 16px"><td colspan="2" style="width: 336px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Rental income</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">19 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">21 </td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">39 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">41 </td></tr><tr style="height: 16px"><td colspan="2" style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Net gain on non-operating asset dispositions</td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">4 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">2 </td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">5 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">8 </td></tr><tr style="height: 16px"><td colspan="2" style="width: 336px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Interest income</td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">1 </td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">1 </td><td style="width: 19px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">2 </td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">2 </td></tr><tr style="height: 16px"><td colspan="2" style="width: 336px; text-align:left;border-color:#000000;min-width:336px;"> Early extinguishment of debt</td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> -</td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> -</td><td style="width: 19px; text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> -</td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> (16)</td></tr><tr style="height: 16px"><td colspan="2" style="width: 336px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:336px;"> Non-operating environmental costs and other</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">2 </td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> (5)</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> (5)</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> (15)</td></tr><tr style="height: 24px"><td colspan="2" style="width: 336px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:336px;"> Total</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:48px;">26 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:45px;">19 </td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:48px;">41 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:45px;">20 </td></tr><tr style="height: 6px"><td style="width: 29px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 307px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:307px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:45px;"> </td></tr></table></div>

19000000

21000000

39000000

41000000

1000000

2000000

-16000000

-2000000 5000000 5000000 15000000

4000000

2000000

5000000

8000000

7. Income Taxes  Internal Revenue Service (IRS) examinations have been completed and settled for all years prior to 1999, and the statute of limitations bars any additional tax assessments. Interest calculations may remain open for years prior to 1999. The IRS has completed its examinations and issued notices of deficiency for tax years 1999 through 2006. We disagree with many of their proposed adjustments, and we are at IRS Appeals for these years. During the second quarter of 2011, the IRS completed its examination and issued a notice of deficiency for tax years 2007 and 2008. We disagree with many of their proposed adjustments, and will contest the adjustments through the IRS Appeals process and potentially through litigation. We anticipate a partial settlement of the tax years 1999 through 2004 in the next 12 months. Several state tax authorities are examining our state income tax returns for tax years 2003 through 2006. Based on the IRS's examination report for tax years 2007 and 2008, we increased our liability for uncertain tax benefits from $86 million at December 31, 2010, to $149 million at June 30, 2011. Most of this increase is a reclassification from our deferred income tax liability. Of the $149 million, we have classified $78 million as current in anticipation of a partial settlement in the next 12 months for tax years 1999 through 2004.  In February 2011, Arizona enacted legislation that will decrease the state's corporate tax rate. This reduced our deferred tax expense by $14 million in the first quarter of 2011.

149000000

78000000

14000000

86000000

8. Earnings Per Share  The following table provides a reconciliation between basic and diluted earnings per share: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td colspan="2" style="width: 346px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:346px;"> </td><td colspan="4" style="width: 129px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:129px;">Three Months Ended</td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 129px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:129px;">Six Months Ended</td></tr><tr style="height: 16px"><td style="width: 29px; text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 317px; text-align:left;border-color:#000000;min-width:317px;"> </td><td colspan="4" style="width: 129px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:129px;">June 30,</td><td style="width: 19px; text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 129px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:129px;">June 30,</td></tr><tr style="height: 16px"><td colspan="2" style="width: 346px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:346px;"> Millions, Except Per Share Amounts</td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011</td><td colspan="2" style="width: 69px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:69px;">2010</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011</td><td colspan="2" style="width: 69px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:69px;">2010</td></tr><tr style="height: 24px"><td colspan="2" style="width: 346px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:346px;"> Net income </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 785</td><td style="width: 24px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:24px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 711</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 1,424</td><td style="width: 24px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:24px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 1,227</td></tr><tr style="height: 16px"><td colspan="2" style="width: 346px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:346px;"> Weighted-average number of shares outstanding: </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:48px;"> </td><td style="width: 24px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:24px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:48px;"> </td><td style="width: 24px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:24px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:45px;"> </td></tr><tr style="height: 16px"><td colspan="2" style="width: 346px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:346px;"> Basic </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">488.4</td><td style="width: 24px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:24px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">501.8</td><td style="width: 19px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">489.0</td><td style="width: 24px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:24px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">503.1</td></tr><tr style="height: 16px"><td colspan="2" style="width: 346px; text-align:left;border-color:#000000;min-width:346px;"> Dilutive effect of stock options </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">1.4</td><td style="width: 24px; text-align:right;border-color:#000000;min-width:24px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">3.4</td><td style="width: 19px; text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">1.4</td><td style="width: 24px; text-align:right;border-color:#000000;min-width:24px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">3.2</td></tr><tr style="height: 16px"><td colspan="2" style="width: 346px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:346px;"> Dilutive effect of retention shares and units </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">2.6</td><td style="width: 24px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:24px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">1.3</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">2.9</td><td style="width: 24px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:24px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">1.3</td></tr><tr style="height: 24px"><td colspan="2" style="width: 346px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:346px;"> Diluted </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">492.4</td><td style="width: 24px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:24px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">506.5</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">493.3</td><td style="width: 24px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:24px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">507.6</td></tr><tr style="height: 16px"><td colspan="2" style="width: 346px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:346px;"> Earnings per share – basic </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 1.61</td><td style="width: 24px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:24px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 1.42</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 2.91</td><td style="width: 24px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:24px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 2.44</td></tr><tr style="height: 16px"><td colspan="2" style="width: 346px; text-align:left;border-color:#000000;min-width:346px;"> Earnings per share – diluted </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 1.59</td><td style="width: 24px; text-align:right;border-color:#000000;min-width:24px;">$</td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> 1.40</td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 2.89</td><td style="width: 24px; text-align:right;border-color:#000000;min-width:24px;">$</td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> 2.42</td></tr><tr style="height: 24px"><td colspan="2" style="width: 346px; border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:346px;"> Stock options excluded as their inclusion would be antidilutive</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">0.6</td><td style="width: 24px; border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:24px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">0.8</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">0.5</td><td style="width: 24px; border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:24px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">0.7</td></tr></table></div>

1400000.0 2600000.0

600000

3400000.0 1300000.0

800000

1400000.0 2900000.0

500000

3200000.0 1300000.0

700000

9. Comprehensive Income  Comprehensive income was as follows: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td colspan="2" style="width: 337px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:337px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Three Months Ended</td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 137px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:137px;">Six Months Ended </td></tr><tr style="height: 16px"><td style="width: 30px; text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 307px; text-align:left;border-color:#000000;min-width:307px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td><td style="width: 19px; text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 137px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:137px;">June 30,</td></tr><tr style="height: 16px"><td colspan="2" style="width: 337px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:337px;"> Millions</td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 77px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:77px;">2010 </td></tr><tr style="height: 16px"><td colspan="2" style="width: 337px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:337px;"> Net income </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">785 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">711 </td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">1,424 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">1,227 </td></tr><tr style="height: 16px"><td colspan="2" style="width: 337px; text-align:left;border-color:#000000;min-width:337px;"> Other comprehensive income/(loss):</td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> </td></tr><tr style="height: 16px"><td colspan="2" style="width: 337px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:337px;"> Defined benefit plans </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> -</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 1</td><td style="width: 19px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">1 </td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">4 </td></tr><tr style="height: 16px"><td colspan="2" style="width: 337px; text-align:left;border-color:#000000;min-width:337px;"> Foreign currency translation </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">9 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> (1)</td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">14 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">1 </td></tr><tr style="height: 16px"><td colspan="2" style="width: 337px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:337px;"> Derivatives</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> -</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> -</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> -</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 1</td></tr><tr style="height: 24px"><td colspan="2" style="width: 337px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:337px;"> Total other comprehensive income [a] </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">9 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> -</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">15 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 6</td></tr><tr style="height: 24px"><td colspan="2" style="width: 337px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:337px;"> Total comprehensive income </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">794 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">711 </td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">1,439 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">1,233 </td></tr><tr style="height: 13px"><td style="width: 30px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 307px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:307px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td></tr><tr style="height: 16px"><td style="width: 30px; text-align:left;border-color:#000000;min-width:30px;">[a]</td><td colspan="10" style="width: 597px; text-align:left;border-color:#000000;min-width:597px;">Net of deferred taxes of $5 million and $9 million during the three and six months ended June 30, 2011, respectively, and $0 million and $1 million during the three and six months ended June 30, 2010, respectively. </td></tr></table></div>The after-tax components of accumulated other comprehensive loss were as follows: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 463px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:463px;"> </td><td colspan="2" style="width: 83px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:83px;">Jun. 30,</td><td colspan="2" style="width: 81px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:81px;">Dec. 31,</td></tr><tr style="height: 16px"><td style="width: 463px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:463px;"> Millions </td><td colspan="2" style="width: 83px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:83px;">2011</td><td colspan="2" style="width: 81px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:81px;">2010</td></tr><tr style="height: 16px"><td style="width: 463px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:463px;"> Defined benefit plans </td><td style="width: 37px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:37px;">$</td><td style="width: 46px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:46px;"> (702)</td><td style="width: 37px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:37px;">$</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> (703)</td></tr><tr style="height: 16px"><td style="width: 463px; text-align:left;border-color:#000000;min-width:463px;"> Foreign currency translation </td><td style="width: 37px; text-align:left;border-color:#000000;min-width:37px;"> </td><td style="width: 46px; text-align:right;border-color:#000000;min-width:46px;"> (14)</td><td style="width: 37px; text-align:left;border-color:#000000;min-width:37px;"> </td><td style="width: 44px; text-align:right;border-color:#000000;min-width:44px;"> (28)</td></tr><tr style="height: 16px"><td style="width: 463px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:463px;"> Derivatives </td><td style="width: 37px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:37px;"> </td><td style="width: 46px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:46px;"> (3)</td><td style="width: 37px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:37px;"> </td><td style="width: 44px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> (3)</td></tr><tr style="height: 24px"><td style="width: 463px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:463px;"> Total </td><td style="width: 37px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:37px;">$</td><td style="width: 46px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:46px;"> (719)</td><td style="width: 37px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:37px;">$</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:44px;"> (734)</td></tr></table></div>

Comprehensive income was as follows: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td colspan="2" style="width: 337px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:337px;"> </td><td colspan="4" style="width: 134px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:134px;">Three Months Ended</td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 137px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:137px;">Six Months Ended </td></tr><tr style="height: 16px"><td style="width: 30px; text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 307px; text-align:left;border-color:#000000;min-width:307px;"> </td><td colspan="4" style="width: 134px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:134px;">June 30,</td><td style="width: 19px; text-align:center;border-color:#000000;min-width:19px;"> </td><td colspan="4" style="width: 137px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:137px;">June 30,</td></tr><tr style="height: 16px"><td colspan="2" style="width: 337px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:337px;"> Millions</td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 77px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:77px;">2010 </td></tr><tr style="height: 16px"><td colspan="2" style="width: 337px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:337px;"> Net income </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">785 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">711 </td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">1,424 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">1,227 </td></tr><tr style="height: 16px"><td colspan="2" style="width: 337px; text-align:left;border-color:#000000;min-width:337px;"> Other comprehensive income/(loss):</td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> </td></tr><tr style="height: 16px"><td colspan="2" style="width: 337px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:337px;"> Defined benefit plans </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> -</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> 1</td><td style="width: 19px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">1 </td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">4 </td></tr><tr style="height: 16px"><td colspan="2" style="width: 337px; text-align:left;border-color:#000000;min-width:337px;"> Foreign currency translation </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">9 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> (1)</td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">14 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">1 </td></tr><tr style="height: 16px"><td colspan="2" style="width: 337px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:337px;"> Derivatives</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> -</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> -</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> -</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 1</td></tr><tr style="height: 24px"><td colspan="2" style="width: 337px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:337px;"> Total other comprehensive income [a] </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">9 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> -</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">15 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 6</td></tr><tr style="height: 24px"><td colspan="2" style="width: 337px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:337px;"> Total comprehensive income </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">794 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">711 </td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">1,439 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">1,233 </td></tr><tr style="height: 13px"><td style="width: 30px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 307px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:307px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 19px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td></tr><tr style="height: 16px"><td style="width: 30px; text-align:left;border-color:#000000;min-width:30px;">[a]</td><td colspan="10" style="width: 597px; text-align:left;border-color:#000000;min-width:597px;">Net of deferred taxes of $5 million and $9 million during the three and six months ended June 30, 2011, respectively, and $0 million and $1 million during the three and six months ended June 30, 2010, respectively. </td></tr></table></div>

1000000

14000000

9000000

794000000

1000000

-1000000

711000000

4000000

1000000

9000000

5000000

1000000

The after-tax components of accumulated other comprehensive loss were as follows: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 463px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:463px;"> </td><td colspan="2" style="width: 83px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:83px;">Jun. 30,</td><td colspan="2" style="width: 81px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:81px;">Dec. 31,</td></tr><tr style="height: 16px"><td style="width: 463px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:463px;"> Millions </td><td colspan="2" style="width: 83px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:83px;">2011</td><td colspan="2" style="width: 81px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:81px;">2010</td></tr><tr style="height: 16px"><td style="width: 463px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:463px;"> Defined benefit plans </td><td style="width: 37px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:37px;">$</td><td style="width: 46px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:46px;"> (702)</td><td style="width: 37px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:37px;">$</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> (703)</td></tr><tr style="height: 16px"><td style="width: 463px; text-align:left;border-color:#000000;min-width:463px;"> Foreign currency translation </td><td style="width: 37px; text-align:left;border-color:#000000;min-width:37px;"> </td><td style="width: 46px; text-align:right;border-color:#000000;min-width:46px;"> (14)</td><td style="width: 37px; text-align:left;border-color:#000000;min-width:37px;"> </td><td style="width: 44px; text-align:right;border-color:#000000;min-width:44px;"> (28)</td></tr><tr style="height: 16px"><td style="width: 463px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:463px;"> Derivatives </td><td style="width: 37px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:37px;"> </td><td style="width: 46px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:46px;"> (3)</td><td style="width: 37px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:37px;"> </td><td style="width: 44px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> (3)</td></tr><tr style="height: 24px"><td style="width: 463px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:463px;"> Total </td><td style="width: 37px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:37px;">$</td><td style="width: 46px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:46px;"> (719)</td><td style="width: 37px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:37px;">$</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:44px;"> (734)</td></tr></table></div>

702000000

703000000

-14000000

-28000000

-3000000

10. Accounts Receivable Accounts receivable includes freight and other receivables reduced by an allowance for doubtful accounts. The allowance is based upon historical losses, credit worthiness of customers, and current economic conditions. At June 30, 2011 and December 31, 2010, our accounts receivable were reduced by $6 million and $5 million, respectively. Receivables not expected to be collected in one year and the associated allowances are classified as other assets in our Condensed Consolidated Statements of Financial Position. At June 30, 2011 and December 31, 2010, receivables classified as other assets were reduced by allowances of $49 million and $51 million, respectively.  Receivables Securitization Facility – Under the receivables securitization facility, the Railroad sells most of its accounts receivable to Union Pacific Receivables, Inc. (UPRI), a bankruptcy-remote subsidiary. UPRI may subsequently transfer, without recourse on a 364-day revolving basis, an undivided interest in eligible accounts receivable to investors. The total capacity to transfer undivided interests to investors under the facility was $600 million at June 30, 2011 and December 31, 2010. The value of the outstanding undivided interest held by investors under the facility was $100 million at June 30, 2011 and December 31, 2010, and is included in our Condensed Consolidated Statements of Financial Position as debt due after one year. The value of the undivided interest held by investors was supported by $1.1 billion and $960 million of accounts receivable at June 30, 2011, and December 31, 2010, respectively. At June 30, 2011, and December 31, 2010, the value of the interest retained by UPRI was $1.1 billion and $960 million, respectively. This retained interest is included in accounts receivable, net in our Condensed Consolidated Statements of Financial Position. The value of the outstanding undivided interest held by investors could fluctuate based upon the availability of eligible receivables and is directly affected by changing business volumes and credit risks, including default and dilution. If default or dilution ratios increase one percent, the value of the outstanding undivided interest held by investors would not change as of June 30, 2011. Should our credit rating fall below investment grade, the value of the outstanding undivided interest held by investors would be reduced, and, in certain cases, the investors would have the right to discontinue the facility.  The Railroad collected approximately $4.6 billion and $4.0 billion during the three months ended June 30, 2011 and 2010, respectively, and $8.9 billion and $7.7 billion during the six months ended June 30, 2011 and 2010, respectively. UPRI used certain of these proceeds to purchase new receivables under the facility.  The costs of the receivables securitization facility include interest, which will vary based on prevailing commercial paper rates, program fees paid to banks, commercial paper issuing costs, and fees for unused commitment availability. The costs of the receivables securitization facility are included in interest expense and were $1 million for the three months ended June 30, 2011 and 2010, and $2 million and $3 million for the six months ended June 30, 2011, and 2010, respectively.  The investors have no recourse to the Railroad's other assets except for customary warranty and indemnity claims. Creditors of the Railroad do not have recourse to the assets of UPRI. We are currently in process of renewing the receivables securitization facility for an additional 364-day period at comparable terms and conditions.

6000000

5000000

49000000

51000000

600000000 600000000 100000000 100000000 1100000000 960000000 1100000000 960000000 4600000000 4000000000 7700000000 8900000000 1000000 1000000 2000000 3000000

11. Properties  The following tables list the major categories of property and equipment, as well as the weighted average composite depreciation rate for each category: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:278px;"> Millions, Except Percentages</td><td colspan="2" style="width: 81px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:81px;"> </td><td colspan="2" style="width: 92px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:92px;"> Accumulated</td><td colspan="2" style="width: 81px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:81px;">Net Book</td><td style="width: 92px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:92px;">Depreciation</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:278px;"> As of June 30, 2011</td><td colspan="2" style="width: 81px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:81px;">Cost</td><td colspan="2" style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:92px;"> Depreciation</td><td colspan="2" style="width: 81px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:81px;">Value</td><td style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:92px;">Rate for 2011</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Land </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 5,008</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> N/A</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 5,008</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">N/A</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Road:</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 44px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 92px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:92px;"> </td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Rail and other track material [a] </td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 12,221</td><td style="width: 44px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 4,506</td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 7,715</td><td style="width: 92px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">3.3%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;border-color:#000000;min-width:278px;"> Ties </td><td style="width: 33px; text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 7,814</td><td style="width: 44px; text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 1,944</td><td style="width: 33px; text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 5,870</td><td style="width: 92px; text-align:right;border-color:#000000;min-width:92px;">2.9%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Ballast </td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 4,081</td><td style="width: 44px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 969</td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 3,112</td><td style="width: 92px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">3.0%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Other [b] </td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 13,783</td><td style="width: 44px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 2,437</td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 11,346</td><td style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:92px;">2.6%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Total road </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 37,899</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 9,856</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 28,043</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">2.9%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Equipment:</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 44px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 92px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:92px;"> </td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Locomotives </td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 6,198</td><td style="width: 44px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 2,817</td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 3,381</td><td style="width: 92px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">5.7%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;border-color:#000000;min-width:278px;"> Freight cars </td><td style="width: 33px; text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 1,926</td><td style="width: 44px; text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 1,059</td><td style="width: 33px; text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 867</td><td style="width: 92px; text-align:right;border-color:#000000;min-width:92px;">3.5%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Work equipment and other </td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 443</td><td style="width: 44px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 42</td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 401</td><td style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">5.6%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Total equipment </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 8,567</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 3,918</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 4,649</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:92px;">5.2%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Technology and other </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 571</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 253</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 318</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">12.7%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Construction in progress </td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 890</td><td style="width: 44px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> -</td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 890</td><td style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:92px;">N/A</td></tr><tr style="height: 24px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Total</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 52,935</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 14,027</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 38,908</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">N/A</td></tr><tr style="height: 13px"><td style="width: 30px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 248px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:248px;"> </td><td style="width: 33px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 44px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 33px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 92px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:92px;"> </td></tr><tr style="height: 16px"><td style="width: 30px; text-align:left;border-color:#000000;min-width:30px;">[a]</td><td colspan="8" style="width: 594px; text-align:left;border-color:#000000;min-width:594px;">Includes a weighted-average composite depreciation rate for rail in high-density traffic corridors.</td></tr><tr style="height: 3px"><td style="width: 30px; text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 248px; text-align:left;border-color:#000000;min-width:248px;"> </td><td style="width: 33px; text-align:left;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 44px; text-align:left;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 33px; text-align:left;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 92px; text-align:left;border-color:#000000;min-width:92px;"> </td></tr><tr style="height: 16px"><td style="width: 30px; text-align:left;border-color:#000000;min-width:30px;">[b]</td><td colspan="8" style="width: 594px; text-align:left;border-color:#000000;min-width:594px;">Other includes grading, bridges and tunnels, signals, buildings, and other road assets.</td></tr></table></div><div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:278px;"> Millions, Except Percentages</td><td colspan="2" style="width: 81px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:81px;"> </td><td colspan="2" style="width: 92px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:92px;"> Accumulated</td><td colspan="2" style="width: 81px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:81px;">Net Book</td><td style="width: 92px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:92px;">Depreciation</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:278px;"> As of December 31, 2010</td><td colspan="2" style="width: 81px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:81px;">Cost</td><td colspan="2" style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:92px;"> Depreciation</td><td colspan="2" style="width: 81px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:81px;">Value</td><td style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:92px;">Rate for 2010</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Land </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 4,984</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> N/A</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 4,984</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">N/A</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Road:</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 44px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 92px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:92px;"> </td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Rail and other track material [a] </td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 11,992</td><td style="width: 44px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 4,458</td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 7,534</td><td style="width: 92px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">3.1%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;border-color:#000000;min-width:278px;"> Ties </td><td style="width: 33px; text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 7,631</td><td style="width: 44px; text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 1,858</td><td style="width: 33px; text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 5,773</td><td style="width: 92px; text-align:right;border-color:#000000;min-width:92px;">2.8%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Ballast </td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 4,011</td><td style="width: 44px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 944</td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 3,067</td><td style="width: 92px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">3.0%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Other [b] </td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 13,634</td><td style="width: 44px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 2,376</td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 11,258</td><td style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:92px;">2.5%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Total road </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 37,268</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 9,636</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 27,632</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">2.8%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Equipment:</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 44px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 92px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:92px;"> </td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Locomotives </td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 6,136</td><td style="width: 44px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 2,699</td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 3,437</td><td style="width: 92px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">5.6%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;border-color:#000000;min-width:278px;"> Freight cars </td><td style="width: 33px; text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 1,886</td><td style="width: 44px; text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 1,040</td><td style="width: 33px; text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 846</td><td style="width: 92px; text-align:right;border-color:#000000;min-width:92px;">3.6%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Work equipment and other </td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 305</td><td style="width: 44px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 39</td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 266</td><td style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">4.0%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Total equipment </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 8,327</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 3,778</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 4,549</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:92px;">5.1%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Technology and other </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 565</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 241</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 324</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">13.2%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Construction in progress </td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 764</td><td style="width: 44px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> -</td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 764</td><td style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:92px;">N/A</td></tr><tr style="height: 24px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Total</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 51,908</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 13,655</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 38,253</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">N/A</td></tr><tr style="height: 13px"><td style="width: 30px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 248px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:248px;"> </td><td style="width: 33px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 44px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 33px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 92px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:92px;"> </td></tr><tr style="height: 16px"><td style="width: 30px; text-align:left;border-color:#000000;min-width:30px;">[a]</td><td colspan="8" style="width: 594px; text-align:left;border-color:#000000;min-width:594px;">Includes a weighted-average composite depreciation rate for rail in high-density traffic corridors.</td></tr><tr style="height: 3px"><td style="width: 30px; text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 248px; text-align:left;border-color:#000000;min-width:248px;"> </td><td style="width: 33px; text-align:left;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 44px; text-align:left;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 33px; text-align:left;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 92px; text-align:left;border-color:#000000;min-width:92px;"> </td></tr><tr style="height: 16px"><td style="width: 30px; text-align:left;border-color:#000000;min-width:30px;">[b]</td><td colspan="8" style="width: 594px; text-align:left;border-color:#000000;min-width:594px;">Other includes grading, bridges and tunnels, signals, buildings, and other road assets.</td></tr></table></div>

The following tables list the major categories of property and equipment, as well as the weighted average composite depreciation rate for each category:<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:278px;"> Millions, Except Percentages</td><td colspan="2" style="width: 81px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:81px;"> </td><td colspan="2" style="width: 92px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:92px;"> Accumulated</td><td colspan="2" style="width: 81px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:81px;">Net Book</td><td style="width: 92px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:92px;">Depreciation</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:278px;"> As of June 30, 2011</td><td colspan="2" style="width: 81px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:81px;">Cost</td><td colspan="2" style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:92px;"> Depreciation</td><td colspan="2" style="width: 81px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:81px;">Value</td><td style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:92px;">Rate for 2011</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Land </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 5,008</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> N/A</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 5,008</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">N/A</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Road:</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 44px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 92px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:92px;"> </td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Rail and other track material [a] </td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 12,221</td><td style="width: 44px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 4,506</td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 7,715</td><td style="width: 92px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">3.3%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;border-color:#000000;min-width:278px;"> Ties </td><td style="width: 33px; text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 7,814</td><td style="width: 44px; text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 1,944</td><td style="width: 33px; text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 5,870</td><td style="width: 92px; text-align:right;border-color:#000000;min-width:92px;">2.9%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Ballast </td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 4,081</td><td style="width: 44px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 969</td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 3,112</td><td style="width: 92px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">3.0%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Other [b] </td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 13,783</td><td style="width: 44px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 2,437</td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 11,346</td><td style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:92px;">2.6%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Total road </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 37,899</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 9,856</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 28,043</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">2.9%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Equipment:</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 44px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 92px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:92px;"> </td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Locomotives </td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 6,198</td><td style="width: 44px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 2,817</td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 3,381</td><td style="width: 92px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">5.7%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;border-color:#000000;min-width:278px;"> Freight cars </td><td style="width: 33px; text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 1,926</td><td style="width: 44px; text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 1,059</td><td style="width: 33px; text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 867</td><td style="width: 92px; text-align:right;border-color:#000000;min-width:92px;">3.5%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Work equipment and other </td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 443</td><td style="width: 44px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 42</td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 401</td><td style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">5.6%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Total equipment </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 8,567</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 3,918</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 4,649</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:92px;">5.2%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Technology and other </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 571</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 253</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 318</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">12.7%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Construction in progress </td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 890</td><td style="width: 44px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> -</td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 890</td><td style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:92px;">N/A</td></tr><tr style="height: 24px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Total</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 52,935</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 14,027</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 38,908</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">N/A</td></tr><tr style="height: 13px"><td style="width: 30px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 248px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:248px;"> </td><td style="width: 33px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 44px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 33px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 92px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:92px;"> </td></tr><tr style="height: 16px"><td style="width: 30px; text-align:left;border-color:#000000;min-width:30px;">[a]</td><td colspan="8" style="width: 594px; text-align:left;border-color:#000000;min-width:594px;">Includes a weighted-average composite depreciation rate for rail in high-density traffic corridors.</td></tr><tr style="height: 3px"><td style="width: 30px; text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 248px; text-align:left;border-color:#000000;min-width:248px;"> </td><td style="width: 33px; text-align:left;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 44px; text-align:left;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 33px; text-align:left;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 92px; text-align:left;border-color:#000000;min-width:92px;"> </td></tr><tr style="height: 16px"><td style="width: 30px; text-align:left;border-color:#000000;min-width:30px;">[b]</td><td colspan="8" style="width: 594px; text-align:left;border-color:#000000;min-width:594px;">Other includes grading, bridges and tunnels, signals, buildings, and other road assets.</td></tr></table></div><div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:278px;"> Millions, Except Percentages</td><td colspan="2" style="width: 81px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:81px;"> </td><td colspan="2" style="width: 92px; border-top-style:solid;border-top-width:2px;text-align:center;border-color:#000000;min-width:92px;"> Accumulated</td><td colspan="2" style="width: 81px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:81px;">Net Book</td><td style="width: 92px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:92px;">Depreciation</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:278px;"> As of December 31, 2010</td><td colspan="2" style="width: 81px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:81px;">Cost</td><td colspan="2" style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:92px;"> Depreciation</td><td colspan="2" style="width: 81px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:81px;">Value</td><td style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:92px;">Rate for 2010</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Land </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 4,984</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> N/A</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 4,984</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">N/A</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Road:</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 44px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 92px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:92px;"> </td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Rail and other track material [a] </td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 11,992</td><td style="width: 44px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 4,458</td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 7,534</td><td style="width: 92px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">3.1%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;border-color:#000000;min-width:278px;"> Ties </td><td style="width: 33px; text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 7,631</td><td style="width: 44px; text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 1,858</td><td style="width: 33px; text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 5,773</td><td style="width: 92px; text-align:right;border-color:#000000;min-width:92px;">2.8%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Ballast </td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 4,011</td><td style="width: 44px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 944</td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 3,067</td><td style="width: 92px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">3.0%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Other [b] </td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 13,634</td><td style="width: 44px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 2,376</td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 11,258</td><td style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:92px;">2.5%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Total road </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 37,268</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 9,636</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 27,632</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">2.8%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Equipment:</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 44px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 92px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:92px;"> </td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Locomotives </td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 6,136</td><td style="width: 44px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 2,699</td><td style="width: 33px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 3,437</td><td style="width: 92px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">5.6%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; text-align:left;border-color:#000000;min-width:278px;"> Freight cars </td><td style="width: 33px; text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 1,886</td><td style="width: 44px; text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 1,040</td><td style="width: 33px; text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> 846</td><td style="width: 92px; text-align:right;border-color:#000000;min-width:92px;">3.6%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Work equipment and other </td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 305</td><td style="width: 44px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 39</td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 266</td><td style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">4.0%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Total equipment </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 8,327</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 3,778</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 4,549</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:92px;">5.1%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Technology and other </td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 565</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 241</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 324</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">13.2%</td></tr><tr style="height: 16px"><td colspan="2" style="width: 278px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:278px;"> Construction in progress </td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 764</td><td style="width: 44px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> -</td><td style="width: 33px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> 764</td><td style="width: 92px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:92px;">N/A</td></tr><tr style="height: 24px"><td colspan="2" style="width: 278px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:278px;"> Total</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 51,908</td><td style="width: 44px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:44px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 13,655</td><td style="width: 33px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:33px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> 38,253</td><td style="width: 92px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:92px;">N/A</td></tr><tr style="height: 13px"><td style="width: 30px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 248px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:248px;"> </td><td style="width: 33px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 44px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 33px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 92px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:92px;"> </td></tr><tr style="height: 16px"><td style="width: 30px; text-align:left;border-color:#000000;min-width:30px;">[a]</td><td colspan="8" style="width: 594px; text-align:left;border-color:#000000;min-width:594px;">Includes a weighted-average composite depreciation rate for rail in high-density traffic corridors.</td></tr><tr style="height: 3px"><td style="width: 30px; text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 248px; text-align:left;border-color:#000000;min-width:248px;"> </td><td style="width: 33px; text-align:left;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 44px; text-align:left;border-color:#000000;min-width:44px;"> </td><td style="width: 48px; text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 33px; text-align:left;border-color:#000000;min-width:33px;"> </td><td style="width: 48px; text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 92px; text-align:left;border-color:#000000;min-width:92px;"> </td></tr><tr style="height: 16px"><td style="width: 30px; text-align:left;border-color:#000000;min-width:30px;">[b]</td><td colspan="8" style="width: 594px; text-align:left;border-color:#000000;min-width:594px;">Other includes grading, bridges and tunnels, signals, buildings, and other road assets.</td></tr></table></div>

5008000000

12221000000 7814000000 4081000000 13783000000 37899000000 6198000000 1926000000 443000000 8567000000 571000000

890000000

52935000000

2817000000 1059000000 42000000 3918000000 253000000

14027000000

4506000000 1944000000 969000000 2437000000 9856000000

5008000000

7715000000 5870000000 3112000000 11346000000 28043000000 3381000000 867000000 401000000 4649000000 318000000

890000000

0.033 0.029 0.03 0.026 0.029 0.057 0.035 0.056 0.052 0.127

38908000000

0.056 0.036 0.04 0.051 0.132 0.031 0.028 0.03 0.025 0.028

4984000000

7534000000 5773000000 3067000000 11258000000 27632000000 3437000000 846000000 266000000 4549000000 324000000

764000000

38253000000

2699000000 1040000000 39000000 3778000000 241000000

13655000000

4458000000 1858000000 944000000 2376000000 9636000000

4984000000

11992000000 7631000000 4011000000 13634000000 37268000000 6136000000 1886000000 305000000 8327000000 565000000

764000000

51908000000

12. Accounts Payable and Other Current Liabilities<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 442px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:442px;"> </td><td colspan="2" style="width: 90px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:90px;">Jun. 30,</td><td colspan="2" style="width: 90px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:90px;">Dec. 31,</td></tr><tr style="height: 16px"><td style="width: 442px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:442px;"> Millions </td><td colspan="2" style="width: 90px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:90px;">2011</td><td colspan="2" style="width: 90px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:90px;">2010</td></tr><tr style="height: 16px"><td style="width: 442px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:442px;"> Accounts payable</td><td style="width: 38px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:38px;">$</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 816</td><td style="width: 38px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:38px;">$</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 677</td></tr><tr style="height: 16px"><td style="width: 442px; text-align:left;border-color:#000000;min-width:442px;"> Income and other taxes</td><td style="width: 38px; text-align:left;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;border-color:#000000;min-width:52px;"> 418</td><td style="width: 38px; text-align:right;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;border-color:#000000;min-width:52px;"> 337</td></tr><tr style="height: 16px"><td style="width: 442px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:442px;"> Dividends and interest</td><td style="width: 38px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 400</td><td style="width: 38px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 383</td></tr><tr style="height: 16px"><td style="width: 442px; text-align:left;border-color:#000000;min-width:442px;"> Accrued wages and vacation</td><td style="width: 38px; text-align:left;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;border-color:#000000;min-width:52px;"> 360</td><td style="width: 38px; text-align:right;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;border-color:#000000;min-width:52px;"> 357</td></tr><tr style="height: 16px"><td style="width: 442px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:442px;"> Accrued casualty costs</td><td style="width: 38px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 337</td><td style="width: 38px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 325</td></tr><tr style="height: 16px"><td style="width: 442px; text-align:left;border-color:#000000;min-width:442px;"> Equipment rents payable </td><td style="width: 38px; text-align:left;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;border-color:#000000;min-width:52px;"> 92</td><td style="width: 38px; text-align:right;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;border-color:#000000;min-width:52px;"> 86</td></tr><tr style="height: 16px"><td style="width: 442px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:442px;"> Other</td><td style="width: 38px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 551</td><td style="width: 38px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 548</td></tr><tr style="height: 24px"><td style="width: 442px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:442px;"> Total accounts payable and other current liabilities</td><td style="width: 38px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:38px;">$</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:52px;"> 2,974</td><td style="width: 38px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:38px;">$</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:52px;"> 2,713</td></tr></table></div>

Accounts Payable and Other Current Liabilities<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 442px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:442px;"> </td><td colspan="2" style="width: 90px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:90px;">Jun. 30,</td><td colspan="2" style="width: 90px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:90px;">Dec. 31,</td></tr><tr style="height: 16px"><td style="width: 442px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:442px;"> Millions </td><td colspan="2" style="width: 90px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:90px;">2011</td><td colspan="2" style="width: 90px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:90px;">2010</td></tr><tr style="height: 16px"><td style="width: 442px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:442px;"> Accounts payable</td><td style="width: 38px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:38px;">$</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 816</td><td style="width: 38px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:38px;">$</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 677</td></tr><tr style="height: 16px"><td style="width: 442px; text-align:left;border-color:#000000;min-width:442px;"> Income and other taxes</td><td style="width: 38px; text-align:left;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;border-color:#000000;min-width:52px;"> 418</td><td style="width: 38px; text-align:right;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;border-color:#000000;min-width:52px;"> 337</td></tr><tr style="height: 16px"><td style="width: 442px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:442px;"> Dividends and interest</td><td style="width: 38px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 400</td><td style="width: 38px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 383</td></tr><tr style="height: 16px"><td style="width: 442px; text-align:left;border-color:#000000;min-width:442px;"> Accrued wages and vacation</td><td style="width: 38px; text-align:left;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;border-color:#000000;min-width:52px;"> 360</td><td style="width: 38px; text-align:right;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;border-color:#000000;min-width:52px;"> 357</td></tr><tr style="height: 16px"><td style="width: 442px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:442px;"> Accrued casualty costs</td><td style="width: 38px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 337</td><td style="width: 38px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 325</td></tr><tr style="height: 16px"><td style="width: 442px; text-align:left;border-color:#000000;min-width:442px;"> Equipment rents payable </td><td style="width: 38px; text-align:left;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;border-color:#000000;min-width:52px;"> 92</td><td style="width: 38px; text-align:right;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; text-align:right;border-color:#000000;min-width:52px;"> 86</td></tr><tr style="height: 16px"><td style="width: 442px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:442px;"> Other</td><td style="width: 38px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 551</td><td style="width: 38px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:38px;"> </td><td style="width: 52px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:52px;"> 548</td></tr><tr style="height: 24px"><td style="width: 442px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:442px;"> Total accounts payable and other current liabilities</td><td style="width: 38px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:38px;">$</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:52px;"> 2,974</td><td style="width: 38px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:38px;">$</td><td style="width: 52px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:52px;"> 2,713</td></tr></table></div>

677000000

86000000

551000000

548000000

816000000

418000000

360000000

337000000

400000000

92000000

337000000

357000000

325000000

383000000

13. Financial Instruments Strategy and Risk – We may use derivative financial instruments in limited instances for other than trading purposes to assist in managing our overall exposure to fluctuations in interest rates and fuel prices. We are not a party to leveraged derivatives and, by policy, do not use derivative financial instruments for speculative purposes. Derivative financial instruments qualifying for hedge accounting must maintain a specified level of effectiveness between the hedging instrument and the item being hedged, both at inception and throughout the hedged period. We formally document the nature and relationships between the hedging instruments and hedged items at inception, as well as our risk-management objectives, strategies for undertaking the various hedge transactions, and method of assessing hedge effectiveness. Changes in the fair market value of derivative financial instruments that do not qualify for hedge accounting are charged to earnings. We may use swaps, collars, futures, and/or forward contracts to mitigate the risk of adverse movements in interest rates and fuel prices; however, the use of these derivative financial instruments may limit future benefits from favorable price movements. Determination of Fair Value – We determine the fair values of our derivative financial instrument positions based upon current fair values as quoted by recognized dealers or the present value of expected future cash flows. Interest Rate Cash Flow Hedges – We report changes in the fair value of cash flow hedges in accumulated other comprehensive loss until the hedged item affects earnings. At June 30, 2011 and December 31, 2010, we had reductions of $2 million and $3 million, respectively, recorded as an accumulated other comprehensive loss that is being amortized on a straight-line basis through September 30, 2014. As of June 30, 2011 and December 31, 2010, we had no interest rate cash flow hedges outstanding.  Earnings Impact – Our use of derivative financial instruments had the following impact on pre-tax income for the six months ended June 30:  <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 471px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:471px;"> Millions</td><td style="width: 18px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:18px;"> </td><td style="width: 55px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:55px;">2011</td><td style="width: 11px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:11px;"> </td><td style="width: 31px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:31px;"> </td><td style="width: 38px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:38px;">2010</td></tr><tr style="height: 16px"><td style="width: 471px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:471px;"> Decrease in interest expense from interest rate hedging</td><td style="width: 18px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:18px;">$</td><td style="width: 55px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:55px;"> -</td><td style="width: 11px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:11px;"> </td><td style="width: 31px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:31px;">$</td><td style="width: 38px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:38px;"> 2</td></tr><tr style="height: 16px"><td style="width: 471px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:471px;"> Increase in pre-tax income</td><td style="width: 18px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:18px;">$</td><td style="width: 55px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:55px;"> -</td><td style="width: 11px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:11px;"> </td><td style="width: 31px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:31px;">$</td><td style="width: 38px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:38px;"> 2</td></tr></table></div>Fair Value of Financial Instruments – The fair value of our short- and long-term debt was estimated using quoted market prices, where available, or current borrowing rates. At June 30, 2011, the fair value of total debt was $9.9 billion, approximately $1.0 billion more than the carrying value. At December 31, 2010, the fair value of total debt was $10.4 billion, approximately $1.2 billion more than the carrying value. At June 30, 2011 and December 31, 2010, approximately $303 million of fixed-rate debt securities contained call provisions that allow us to retire the debt instruments prior to final maturity, with the payment of fixed call premiums, or in certain cases, at par. The fair value of our cash equivalents approximates their carrying value due to the short-term maturities of these instruments.

Our use of derivative financial instruments had the following impact on pre-tax income for the six months ended June 30:  <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 471px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:471px;"> Millions</td><td style="width: 18px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:18px;"> </td><td style="width: 55px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:55px;">2011</td><td style="width: 11px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:11px;"> </td><td style="width: 31px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:31px;"> </td><td style="width: 38px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:38px;">2010</td></tr><tr style="height: 16px"><td style="width: 471px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:471px;"> Decrease in interest expense from interest rate hedging</td><td style="width: 18px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:18px;">$</td><td style="width: 55px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:55px;"> -</td><td style="width: 11px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:11px;"> </td><td style="width: 31px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:31px;">$</td><td style="width: 38px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:38px;"> 2</td></tr><tr style="height: 16px"><td style="width: 471px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:471px;"> Increase in pre-tax income</td><td style="width: 18px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:18px;">$</td><td style="width: 55px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:55px;"> -</td><td style="width: 11px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:11px;"> </td><td style="width: 31px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:31px;">$</td><td style="width: 38px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:38px;"> 2</td></tr></table></div>

2000000

3000000

9900000000

10400000000

1000000000 1200000000 303000000 303000000

14. Debt Credit Facilities – During the second quarter of 2011, we replaced our $1.9 billion revolving credit facility, which would have expired in April 2012, with a new $1.8 billion facility that expires in May 2015 (the facility). The facility is based on substantially similar terms as those in the previous credit facility. On June 30, 2011, we had $1.8 billion of credit available under the facility, which is designated for general corporate purposes and supports the issuance of commercial paper. We did not draw on the facility during the six months ended June 30, 2011. Commitment fees and interest rates payable under the facility are similar to fees and rates available to comparably rated, investment-grade borrowers. The facility allows for borrowings at floating rates based on London Interbank Offered Rates, plus a spread, depending upon our senior unsecured debt ratings. The facility requires Union Pacific Corporation to maintain a debt-to-net-worth coverage ratio as a condition to making a borrowing. At June 30, 2011, and December 31, 2010 (and at all times during the first and second quarters), we were in compliance with this covenant.  The definition of debt used for purposes of calculating the debt-to-net-worth coverage ratio includes, among other things, certain credit arrangements, capital leases, guarantees and unfunded and vested pension benefits under Title IV of ERISA. At June 30, 2011, the debt-to-net-worth coverage ratio allowed us to carry up to $36.6 billion of debt (as defined in the facility), and we had $9.3 billion of debt (as defined in the facility) outstanding at that date. Under our current capital plans, we expect to continue to satisfy the debt-to-net-worth coverage ratio; however, many factors beyond our reasonable control could affect our ability to comply with this provision in the future. The facility does not include any other financial restrictions, credit rating triggers (other than rating-dependent pricing), or any other provision that could require us to post collateral. The facility also includes a $75 million cross-default provision and a change-of-control provision.  During the six months ended June 30, 2011, we did not issue or repay any commercial paper, and at June 30, 2011, we had no commercial paper outstanding. Outstanding commercial paper balances are supported by our revolving credit facility but do not reduce the amount of borrowings available under the facility.  Shelf Registration Statement and Significant New Borrowings – Under our current shelf registration, we may issue, from time to time, any combination of debt securities, preferred stock, common stock, or warrants for debt securities or preferred stock in one or more offerings. We have no immediate plans to issue equity securities; however, we will continue to explore opportunities to replace existing debt or access capital through issuances of debt securities under our shelf registration, and, therefore, we may issue additional debt securities at any time. As of June 30, 2011, and December 31, 2010, we reclassified as long-term debt approximately $574 million and $100 million, respectively, of debt due within one year that we intend to refinance. This reclassification reflects our ability and intent to refinance any short-term borrowings and certain current maturities of long-term debt on a long-term basis. Debt Exchange – On May 23, 2011, we announced the commencement of a private offer to exchange various outstanding notes and debentures due between 2013 and 2019 (Existing Notes). The exchange transaction closed on June 23, 2011, at which time $857 million of Existing Notes were exchanged for $750 million of 4.163% notes (New Notes) due July 15, 2022, plus cash consideration of approximately $267 million and $17 million for accrued and unpaid interest on the Existing Notes. The cash consideration, which will be recorded as an adjustment to the carrying value of debt, and the balance of the unamortized discount and issue costs from the Existing Notes will be amortized as an adjustment of interest expense over the term of the New Notes. No gain or loss will be recognized as a result of the exchange. Costs related to the debt exchange that are payable to parties other than the debt holders total approximately $6 million and are included in interest expense during the second quarter. The following table lists the outstanding notes and debentures that were exchanged: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 525px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:525px;"> </td><td colspan="2" style="width: 99px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:99px;">Principal amount</td></tr><tr style="height: 16px"><td style="width: 525px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:525px;"> Millions</td><td colspan="2" style="width: 99px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:99px;">exchanged</td></tr><tr style="height: 16px"><td style="width: 525px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:525px;"> 7.875% Notes due 2019</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;">$</td><td style="width: 80px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:80px;"> 196</td></tr><tr style="height: 16px"><td style="width: 525px; text-align:left;border-color:#000000;min-width:525px;"> 5.450% Notes due 2013</td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 80px; text-align:right;border-color:#000000;min-width:80px;"> 50</td></tr><tr style="height: 16px"><td style="width: 525px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:525px;"> 5.125% Notes due 2014</td><td style="width: 19px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 80px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:80px;"> 45</td></tr><tr style="height: 16px"><td style="width: 525px; text-align:left;border-color:#000000;min-width:525px;"> 5.375% Notes due 2014</td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 80px; text-align:right;border-color:#000000;min-width:80px;"> 55</td></tr><tr style="height: 16px"><td style="width: 525px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:525px;"> 5.700% Notes due 2018</td><td style="width: 19px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 80px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:80px;"> 277</td></tr><tr style="height: 16px"><td style="width: 525px; text-align:left;border-color:#000000;min-width:525px;"> 5.750% Notes due 2017</td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 80px; text-align:right;border-color:#000000;min-width:80px;"> 178</td></tr><tr style="height: 16px"><td style="width: 525px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:525px;"> 7.000% Debentures due 2016</td><td style="width: 19px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 80px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:80px;"> 38</td></tr><tr style="height: 16px"><td style="width: 525px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:525px;"> 5.650% Notes due 2017</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 80px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:80px;"> 18</td></tr><tr style="height: 24px"><td style="width: 525px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:525px;"> Total</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;">$</td><td style="width: 80px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:80px;"> 857</td></tr></table></div>Debt Redemption – On March 22, 2010, we redeemed $175 million of our 6.5% notes due April 15, 2012. The redemption resulted in an early extinguishment charge of $16 million in the first quarter of 2010.

At June 30, 2011, and December 31, 2010 (and at all times during the first and second quarters), we were in compliance with this covenant. At June 30, 2011, and December 31, 2010 (and at all times during the first and second quarters), we were in compliance with this covenant.

The following table lists the outstanding notes and debentures that were exchanged: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 525px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:525px;"> </td><td colspan="2" style="width: 99px; border-top-style:solid;border-top-width:2px;text-align:right;border-color:#000000;min-width:99px;">Principal amount</td></tr><tr style="height: 16px"><td style="width: 525px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:525px;"> Millions</td><td colspan="2" style="width: 99px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:99px;">exchanged</td></tr><tr style="height: 16px"><td style="width: 525px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:525px;"> 7.875% Notes due 2019</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;">$</td><td style="width: 80px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:80px;"> 196</td></tr><tr style="height: 16px"><td style="width: 525px; text-align:left;border-color:#000000;min-width:525px;"> 5.450% Notes due 2013</td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 80px; text-align:right;border-color:#000000;min-width:80px;"> 50</td></tr><tr style="height: 16px"><td style="width: 525px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:525px;"> 5.125% Notes due 2014</td><td style="width: 19px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 80px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:80px;"> 45</td></tr><tr style="height: 16px"><td style="width: 525px; text-align:left;border-color:#000000;min-width:525px;"> 5.375% Notes due 2014</td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 80px; text-align:right;border-color:#000000;min-width:80px;"> 55</td></tr><tr style="height: 16px"><td style="width: 525px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:525px;"> 5.700% Notes due 2018</td><td style="width: 19px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 80px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:80px;"> 277</td></tr><tr style="height: 16px"><td style="width: 525px; text-align:left;border-color:#000000;min-width:525px;"> 5.750% Notes due 2017</td><td style="width: 19px; text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 80px; text-align:right;border-color:#000000;min-width:80px;"> 178</td></tr><tr style="height: 16px"><td style="width: 525px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:525px;"> 7.000% Debentures due 2016</td><td style="width: 19px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 80px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:80px;"> 38</td></tr><tr style="height: 16px"><td style="width: 525px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:525px;"> 5.650% Notes due 2017</td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:19px;"> </td><td style="width: 80px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:80px;"> 18</td></tr><tr style="height: 24px"><td style="width: 525px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:525px;"> Total</td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;">$</td><td style="width: 80px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:80px;"> 857</td></tr></table></div>

857000000

196000000

0.07875

2019

0.05450

50000000

2013

45000000

2014

0.05125

0.05375

2014

55000000

0.05700

277000000

2018

2017

0.05750

178000000

0.07000

38000000

2016

2017

0.05650

18000000

1800000000

36600000000 9300000000

May 2015

0.065

2012-04-15 574000000 100000000

175000000

0.04163

267000000 17000000

6000000

750000000

2022-07-15

15. Variable Interest Entities  We have entered into various lease transactions in which the structure of the leases contain variable interest entities (VIEs). These VIEs were created solely for the purpose of doing lease transactions (principally involving railroad equipment and facilities) and have no other activities, assets or liabilities outside of the lease transactions. Within these lease arrangements, we have the right to purchase some or all of the assets at fixed prices. Depending on market conditions, fixed-price purchase options available in the leases could potentially provide benefits to us; however, these benefits are not expected to be significant. We maintain and operate the assets based on contractual obligations within the lease arrangements, which set specific guidelines consistent within the railroad industry. As such, we have no control over activities that could materially impact the fair value of the leased assets. We do not hold the power to direct the activities of the VIEs and, therefore, do not control the ongoing activities that have a significant impact on the economic performance of the VIEs. Additionally, we do not have the obligation to absorb losses of the VIEs or the right to receive benefits of the VIEs that could potentially be significant to the VIEs.  We are not considered to be the primary beneficiary and do not consolidate these VIEs because our actions and decisions do not have the most significant effect on the VIE's performance and our fixed-price purchase price options are not considered to be potentially significant to the VIE's. The future minimum lease payments associated with the VIE leases totaled $4.1 billion as of June 30, 2011. 4100000000

16. Commitments and Contingencies Asserted and Unasserted Claims – Various claims and lawsuits are pending against us and certain of our subsidiaries. We cannot fully determine the effect of all asserted and unasserted claims on our consolidated results of operations, financial condition, or liquidity; however, to the extent possible, where asserted and unasserted claims are considered probable and where such claims can be reasonably estimated, we have recorded a liability. We do not expect that any known lawsuits, claims, environmental costs, commitments, contingent liabilities, or guarantees will have a material adverse effect on our consolidated results of operations, financial condition, or liquidity after taking into account liabilities and insurance recoveries previously recorded for these matters. Personal Injury – The cost of personal injuries to employees and others related to our activities is charged to expense based on estimates of the ultimate cost and number of incidents each year. We use an actuarial analysis to measure the expense and liability, including unasserted claims. The Federal Employers' Liability Act (FELA) governs compensation for work-related accidents. Under FELA, damages are assessed based on a finding of fault through litigation or out-of-court settlements. We offer a comprehensive variety of services and rehabilitation programs for employees who are injured at work.  Our personal injury liability is discounted to present value using applicable U.S. Treasury rates. Approximately 88% of the recorded liability is related to asserted claims, and approximately 12% is related to unasserted claims at June 30, 2011. Estimates can vary over time due to evolving trends in litigation.  Our personal injury liability activity was as follows:<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 490px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:490px;"> Millions, </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:45px;"> </td></tr><tr style="height: 16px"><td style="width: 490px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:490px;"> for the Six Months Ended June 30, </td><td colspan="2" style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td></tr><tr style="height: 16px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Beginning balance</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">426 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">545 </td></tr><tr style="height: 16px"><td style="width: 490px; text-align:left;border-color:#000000;min-width:490px;"> Current year accruals</td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">67 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">82 </td></tr><tr style="height: 16px"><td style="width: 490px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Changes in estimates for prior years</td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> (39)</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> (56)</td></tr><tr style="height: 16px"><td style="width: 490px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:490px;"> Payments</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> (53)</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> (109)</td></tr><tr style="height: 24px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Ending balance at June 30</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">401 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">462 </td></tr><tr style="height: 24px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:490px;"> Current portion, ending balance at June 30</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:48px;">140 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:45px;">157 </td></tr></table></div>Asbestos – We are a defendant in a number of lawsuits in which current and former employees and other parties allege exposure to asbestos. We assess our potential liability using a statistical analysis of resolution costs for asbestos-related claims. This liability is updated annually and excludes future defense and processing costs. The liability for resolving both asserted and unasserted claims was based on the following assumptions:  <ul><li style="margin-left:36px;list-style:disc;">The ratio of future claims by alleged disease would be consistent with historical averages.</li><li style="margin-left:36px;list-style:disc;">The number of claims filed against us will decline each year. </li><li style="margin-left:36px;list-style:disc;">The average settlement values for asserted and unasserted claims will be equivalent to historical averages. </li><li style="margin-left:36px;list-style:disc;">The percentage of claims dismissed in the future will be equivalent to historical averages. </li></ul> Our liability for asbestos-related claims is not discounted to present value due to the uncertainty surrounding the timing of future payments. Approximately 20% of the recorded liability related to asserted claims and approximately 80% related to unasserted claims at June 30, 2011.  Our asbestos-related liability activity was as follows: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 490px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:490px;"> Millions, </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:45px;"> </td></tr><tr style="height: 16px"><td style="width: 490px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:490px;"> for the Six Months Ended June 30, </td><td colspan="2" style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td></tr><tr style="height: 16px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Beginning balance</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">162 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">174 </td></tr><tr style="height: 16px"><td style="width: 490px; text-align:left;border-color:#000000;min-width:490px;"> Accruals</td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> - </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;">5</td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> - </td></tr><tr style="height: 16px"><td style="width: 490px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Payments</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> (5)</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> (6)</td></tr><tr style="height: 24px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:490px;"> Ending balance at June 30</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">157 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">168 </td></tr><tr style="height: 24px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Current portion, ending balance at June 30</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">11 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">13 </td></tr></table></div>We have insurance coverage for a portion of the costs incurred to resolve asbestos-related claims, and we have recognized an asset for estimated insurance recoveries at June 30, 2011, and December 31, 2010. We believe that our estimates of liability for asbestos-related claims and insurance recoveries are reasonable and probable. The amounts recorded for asbestos-related liabilities and related insurance recoveries were based on currently known facts. However, future events, such as the number of new claims filed each year, average settlement costs, and insurance coverage issues, could cause the actual costs and insurance recoveries to be higher or lower than the projected amounts. Estimates also may vary in the future if strategies, activities, and outcomes of asbestos litigation materially change; federal and state laws governing asbestos litigation increase or decrease the probability or amount of compensation of claimants; and there are material changes with respect to payments made to claimants by other defendants.  Environmental Costs – We are subject to federal, state, and local environmental laws and regulations. We have identified 294 sites at which we are or may be liable for remediation costs associated with alleged contamination or for violations of environmental requirements. This includes 33 sites that are the subject of actions taken by the U.S. government, 17 of which are currently on the Superfund National Priorities List. Certain federal legislation imposes joint and several liability for the remediation of identified sites; consequently, our ultimate environmental liability may include costs relating to activities of other parties, in addition to costs relating to our own activities at each site.  When we identify an environmental issue with respect to property owned, leased, or otherwise used in our business, we and our consultants perform environmental assessments on the property. We expense the cost of the assessments as incurred. We accrue the cost of remediation where our obligation is probable and such costs can be reasonably estimated. We do not discount our environmental liabilities when the timing of the anticipated cash payments is not fixed or readily determinable. At June 30, 2011, less than 1% of our environmental liability was discounted at 3.2%, while approximately 5% of our environmental liability was discounted at 2.8% at December 31, 2010.Our environmental liability activity was as follows: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 490px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:490px;"> Millions, </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:45px;"> </td></tr><tr style="height: 16px"><td style="width: 490px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:490px;"> for the Six Months Ended June 30, </td><td colspan="2" style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td></tr><tr style="height: 16px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Beginning balance</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">213 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">217 </td></tr><tr style="height: 16px"><td style="width: 490px; text-align:left;border-color:#000000;min-width:490px;"> Accruals</td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">17 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">20 </td></tr><tr style="height: 16px"><td style="width: 490px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Payments</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> (22)</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> (18)</td></tr><tr style="height: 24px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:490px;"> Ending balance at June 30</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">208 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">219 </td></tr><tr style="height: 24px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Current portion, ending balance at June 30</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">74 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">82 </td></tr></table></div>The environmental liability includes future costs for remediation and restoration of sites, as well as ongoing monitoring costs, but excludes any anticipated recoveries from third parties. Cost estimates are based on information available for each site, financial viability of other potentially responsible parties, and existing technology, laws, and regulations. The ultimate liability for remediation is difficult to determine because of the number of potentially responsible parties, site-specific cost sharing arrangements with other potentially responsible parties, the degree of contamination by various wastes, the scarcity and quality of volumetric data related to many of the sites, and the speculative nature of remediation costs. Estimates of liability may vary over time due to changes in federal, state, and local laws governing environmental remediation. Current obligations are not expected to have a material adverse effect on our consolidated results of operations, financial condition, or liquidity.  Guarantees – At June 30, 2011, we were contingently liable for $358 million in guarantees. We have recorded a liability of $2 million and $3 million for the fair value of these obligations as of June 30, 2011, and December 31, 2010, respectively. We entered into these contingent guarantees in the normal course of business, and they include guaranteed obligations related to our headquarters building, equipment financings, and affiliated operations. The final guarantee expires in 2022. We are not aware of any existing event of default that would require us to satisfy these guarantees. We do not expect that these guarantees will have a material adverse effect on our consolidated financial condition, results of operations, or liquidity.  Indemnities – Our maximum potential exposure under indemnification arrangements, including certain tax indemnifications, can range from a specified dollar amount to an unlimited amount, depending on the nature of the transactions and the agreements. Due to uncertainty as to whether claims will be made or how they will be resolved, we cannot reasonably determine the probability of an adverse claim or reasonably estimate any adverse liability or the total maximum exposure under these indemnification arrangements. We do not have any reason to believe that we will be required to make any material payments under these indemnity provisions.  Operating Leases – At June 30, 2011, we had commitments for future minimum lease payments under operating leases with initial or remaining non-cancelable lease terms in excess of one year of approximately $4.7 billion.

Our personal injury liability activity was as follows:<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 490px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:490px;"> Millions, </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:45px;"> </td></tr><tr style="height: 16px"><td style="width: 490px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:490px;"> for the Six Months Ended June 30, </td><td colspan="2" style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td></tr><tr style="height: 16px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Beginning balance</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">426 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">545 </td></tr><tr style="height: 16px"><td style="width: 490px; text-align:left;border-color:#000000;min-width:490px;"> Current year accruals</td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">67 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">82 </td></tr><tr style="height: 16px"><td style="width: 490px; text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Changes in estimates for prior years</td><td style="width: 12px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> (39)</td><td style="width: 29px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> (56)</td></tr><tr style="height: 16px"><td style="width: 490px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:490px;"> Payments</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;"> (53)</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> (109)</td></tr><tr style="height: 24px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Ending balance at June 30</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">401 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">462 </td></tr><tr style="height: 24px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:490px;"> Current portion, ending balance at June 30</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:48px;">140 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:45px;">157 </td></tr></table></div>Our asbestos-related liability activity was as follows: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 490px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:490px;"> Millions, </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:45px;"> </td></tr><tr style="height: 16px"><td style="width: 490px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:490px;"> for the Six Months Ended June 30, </td><td colspan="2" style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td></tr><tr style="height: 16px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Beginning balance</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">162 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">174 </td></tr><tr style="height: 16px"><td style="width: 490px; text-align:left;border-color:#000000;min-width:490px;"> Accruals</td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;"> - </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;">5</td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> - </td></tr><tr style="height: 16px"><td style="width: 490px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Payments</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> (5)</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> (6)</td></tr><tr style="height: 24px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:490px;"> Ending balance at June 30</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">157 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">168 </td></tr><tr style="height: 24px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Current portion, ending balance at June 30</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">11 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">13 </td></tr></table></div>Our environmental liability activity was as follows: <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 490px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:490px;"> Millions, </td><td style="width: 12px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:48px;"> </td><td style="width: 29px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:45px;"> </td></tr><tr style="height: 16px"><td style="width: 490px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:490px;"> for the Six Months Ended June 30, </td><td colspan="2" style="width: 60px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:60px;">2011 </td><td colspan="2" style="width: 74px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:74px;">2010 </td></tr><tr style="height: 16px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Beginning balance</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">213 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">217 </td></tr><tr style="height: 16px"><td style="width: 490px; text-align:left;border-color:#000000;min-width:490px;"> Accruals</td><td style="width: 12px; text-align:right;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; text-align:right;border-color:#000000;min-width:48px;">17 </td><td style="width: 29px; text-align:right;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">20 </td></tr><tr style="height: 16px"><td style="width: 490px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Payments</td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;"> </td><td style="width: 48px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;"> (22)</td><td style="width: 29px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;"> (18)</td></tr><tr style="height: 24px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:490px;"> Ending balance at June 30</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:48px;">208 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">219 </td></tr><tr style="height: 24px"><td style="width: 490px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:490px;"> Current portion, ending balance at June 30</td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:12px;">$</td><td style="width: 48px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:48px;">74 </td><td style="width: 29px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:29px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:45px;">82 </td></tr></table></div>

545000000

82000000

-56000000

-109000000

462000000

157000000

426000000

67000000

-39000000

-53000000

401000000

140000000

-5000000

157000000

11000000

162000000

174000000

-6000000

168000000

13000000

approximately 5% less than 1%

17000000

-22000000

208000000

74000000

213000000

217000000

20000000

-18000000

219000000

82000000

The final guarantee expires in 2022.

2000000

3000000

358000000

0.032

0.028

294 17 33 0.2 0.8

4700000000

0.88 0.12

17. Share Repurchase Program  The shares repurchased in the first quarter, shown in the table below, were repurchased under our authorized share repurchase program that expired on March 31, 2011. Effective April 1, 2011, our Board of Directors authorized the repurchase of 40 million common shares of UPC by March 31, 2014, replacing our previous repurchase program. The shares repurchased in the second quarter, shown in the table below, were purchased under the new program. As of June 30, 2011, we had repurchased a total of $4.8 billion of UPC common stock since the commencement of purchases under our repurchase programs.<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td colspan="2" style="width: 233px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:233px;"> </td><td colspan="2" style="width: 200px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:200px;">Number of Shares Purchased </td><td colspan="4" style="width: 192px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:192px;">Average Price Paid </td></tr><tr style="height: 16px"><td colspan="2" style="width: 233px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:233px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:100px;">2011</td><td style="width: 100px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:100px;">2010</td><td style="width: 42px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:42px;"> </td><td style="width: 51px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:51px;">2011</td><td style="width: 30px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:30px;"> </td><td style="width: 69px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:69px;">2010</td></tr><tr style="height: 16px"><td colspan="2" style="width: 233px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:233px;"> First quarter [a]</td><td style="width: 100px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:100px;"> 2,636,178</td><td style="width: 100px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:100px;"> -</td><td style="width: 42px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:42px;">$</td><td style="width: 51px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:51px;"> 94.10</td><td style="width: 30px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:30px;">$</td><td style="width: 69px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:69px;"> -</td></tr><tr style="height: 16px"><td colspan="2" style="width: 233px; text-align:left;border-color:#000000;min-width:233px;"> Second quarter </td><td style="width: 100px; text-align:right;border-color:#000000;min-width:100px;"> 3,576,399</td><td style="width: 100px; text-align:right;border-color:#000000;min-width:100px;"> 6,496,400</td><td style="width: 42px; text-align:right;border-color:#000000;min-width:42px;"> </td><td style="width: 51px; text-align:right;border-color:#000000;min-width:51px;"> 100.75</td><td style="width: 30px; text-align:right;border-color:#000000;min-width:30px;"> </td><td style="width: 69px; text-align:right;border-color:#000000;min-width:69px;"> 71.74</td></tr><tr style="height: 24px"><td colspan="2" style="width: 233px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:233px;"> Total </td><td style="width: 100px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:100px;"> 6,212,577</td><td style="width: 100px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:100px;"> 6,496,400</td><td style="width: 42px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:42px;">$</td><td style="width: 51px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:51px;"> 97.92</td><td style="width: 30px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:30px;">$</td><td style="width: 69px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:69px;"> 71.74</td></tr><tr style="height: 5px"><td style="width: 30px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 203px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:203px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:100px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:100px;"> </td><td style="width: 42px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:42px;"> </td><td style="width: 51px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 30px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 69px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:69px;"> </td></tr><tr style="height: 17px"><td colspan="7" style="width: 556px; border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:556px;">Remaining number of shares that may yet be repurchased</td><td style="width: 69px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:69px;">36,423,601</td></tr><tr style="height: 13px"><td style="width: 30px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 203px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:203px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:100px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:100px;"> </td><td style="width: 42px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:42px;"> </td><td style="width: 51px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 30px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 69px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:69px;"> </td></tr><tr style="height: 16px"><td colspan="8" style="width: 625px; text-align:left;border-color:#000000;min-width:625px;">[a] Shares repurchased in the first quarter were authorized by a prior share repurchase program, which expired March 31, 2011.</td></tr></table></div>Management's assessments of market conditions and other pertinent facts guide the timing and volume of all repurchases. We expect to fund any share repurchases under this program through cash generated from operations, the sale or lease of various operating and non-operating properties, debt issuances, and cash on hand. Repurchased shares are recorded in treasury stock at cost, which includes any applicable commissions and fees.

Effective April 1, 2011, our Board of Directors authorized the repurchase of 40 million common shares of UPC by March 31, 2014, replacing our previous repurchase program. -6212577

94.10

100.75

71.74

-6496400 -3576399 -2636178 -0 -6496400 <div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td colspan="2" style="width: 233px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:233px;"> </td><td colspan="2" style="width: 200px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:200px;">Number of Shares Purchased </td><td colspan="4" style="width: 192px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:192px;">Average Price Paid </td></tr><tr style="height: 16px"><td colspan="2" style="width: 233px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:233px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:100px;">2011</td><td style="width: 100px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:100px;">2010</td><td style="width: 42px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:42px;"> </td><td style="width: 51px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:51px;">2011</td><td style="width: 30px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:30px;"> </td><td style="width: 69px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:69px;">2010</td></tr><tr style="height: 16px"><td colspan="2" style="width: 233px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:233px;"> First quarter [a]</td><td style="width: 100px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:100px;"> 2,636,178</td><td style="width: 100px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:100px;"> -</td><td style="width: 42px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:42px;">$</td><td style="width: 51px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:51px;"> 94.10</td><td style="width: 30px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:30px;">$</td><td style="width: 69px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:69px;"> -</td></tr><tr style="height: 16px"><td colspan="2" style="width: 233px; text-align:left;border-color:#000000;min-width:233px;"> Second quarter </td><td style="width: 100px; text-align:right;border-color:#000000;min-width:100px;"> 3,576,399</td><td style="width: 100px; text-align:right;border-color:#000000;min-width:100px;"> 6,496,400</td><td style="width: 42px; text-align:right;border-color:#000000;min-width:42px;"> </td><td style="width: 51px; text-align:right;border-color:#000000;min-width:51px;"> 100.75</td><td style="width: 30px; text-align:right;border-color:#000000;min-width:30px;"> </td><td style="width: 69px; text-align:right;border-color:#000000;min-width:69px;"> 71.74</td></tr><tr style="height: 24px"><td colspan="2" style="width: 233px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;background-color:#D8D8D8;border-color:#000000;min-width:233px;"> Total </td><td style="width: 100px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:100px;"> 6,212,577</td><td style="width: 100px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:100px;"> 6,496,400</td><td style="width: 42px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:42px;">$</td><td style="width: 51px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:51px;"> 97.92</td><td style="width: 30px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:30px;">$</td><td style="width: 69px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:69px;"> 71.74</td></tr><tr style="height: 5px"><td style="width: 30px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 203px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:203px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:100px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:100px;"> </td><td style="width: 42px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:42px;"> </td><td style="width: 51px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 30px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 69px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:69px;"> </td></tr><tr style="height: 17px"><td colspan="7" style="width: 556px; border-bottom-style:solid;border-bottom-width:2px;text-align:left;border-color:#000000;min-width:556px;">Remaining number of shares that may yet be repurchased</td><td style="width: 69px; border-bottom-style:solid;border-bottom-width:2px;text-align:right;border-color:#000000;min-width:69px;">36,423,601</td></tr><tr style="height: 13px"><td style="width: 30px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 203px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:203px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:100px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:100px;"> </td><td style="width: 42px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:42px;"> </td><td style="width: 51px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:51px;"> </td><td style="width: 30px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:30px;"> </td><td style="width: 69px; border-top-style:solid;border-top-width:2px;text-align:left;border-color:#000000;min-width:69px;"> </td></tr><tr style="height: 16px"><td colspan="8" style="width: 625px; text-align:left;border-color:#000000;min-width:625px;">[a] Shares repurchased in the first quarter were authorized by a prior share repurchase program, which expired March 31, 2011.</td></tr></table></div>

71.74

97.92

36423601

4800000000 Includes a weighted-average composite depreciation rate for rail in high-density traffic corridors. Other includes grading, bridges and tunnels, signals, buildings, and other road assets. Net of deferred taxes of $5 million and $9 million during the three and six months ended June 30, 2011, respectively, and $0 million and $1 million during the three and six months ended June 30, 2010, respectively. [a] Shares repurchased in first quarter were under the prior share repurchase program that expired March 31, 2011