v2.4.0.6
Pension and Postretirement Benefit Plans - Plan Assets (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
U.S. Qualified Pension Plans [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets $ 12,005 [1],[2] $ 10,596 [1],[2] $ 9,977 [1]
U.S. Qualified Pension Plans [Member] | Cash and Cash Equivalents [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 2,111 1,196  
U.S. Qualified Pension Plans [Member] | Equity Securities [Member] | Global Equity Securities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 2,522 2,766  
U.S. Qualified Pension Plans [Member] | Equity Securities [Member] | Equity Commingled Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 1,794 1,708  
U.S. Qualified Pension Plans [Member] | Debt Securities [Member] | Fixed Income Commingled Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 870 817  
U.S. Qualified Pension Plans [Member] | Debt Securities [Member] | Government Bonds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 808 660  
U.S. Qualified Pension Plans [Member] | Debt Securities [Member] | Corporate debt [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 1,971 2,085  
U.S. Qualified Pension Plans [Member] | Other Investments [Member] | Private Equity Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 920 899  
U.S. Qualified Pension Plans [Member] | Other Investments [Member] | Insurance Contracts [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 353    
U.S. Qualified Pension Plans [Member] | Other Investments [Member] | Other Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 656 465  
International Pension Plans [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 7,118 [2],[3] 6,699 [2],[3] 6,516 [3]
International Pension Plans [Member] | Cash and Cash Equivalents [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 311 518  
International Pension Plans [Member] | Equity Securities [Member] | Global Equity Securities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 1,513 1,458  
International Pension Plans [Member] | Equity Securities [Member] | Equity Commingled Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 2,047 1,881  
International Pension Plans [Member] | Debt Securities [Member] | Fixed Income Commingled Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 786 804  
International Pension Plans [Member] | Debt Securities [Member] | Government Bonds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 1,015 932  
International Pension Plans [Member] | Debt Securities [Member] | Corporate debt [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 542 376  
International Pension Plans [Member] | Other Investments [Member] | Private Equity Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 55 21  
International Pension Plans [Member] | Other Investments [Member] | Insurance Contracts [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 433 435  
International Pension Plans [Member] | Other Investments [Member] | Other Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 416 274  
Postretirement Plans [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 422 [2],[4],[5] 414 [2],[4],[5] 370 [4]
Postretirement Plans [Member] | Cash and Cash Equivalents [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 19 12  
Postretirement Plans [Member] | Equity Securities [Member] | Global Equity Securities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 24 29  
Postretirement Plans [Member] | Equity Securities [Member] | Equity Commingled Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 17 18  
Postretirement Plans [Member] | Debt Securities [Member] | Fixed Income Commingled Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 8 9  
Postretirement Plans [Member] | Debt Securities [Member] | Government Bonds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 8 7  
Postretirement Plans [Member] | Debt Securities [Member] | Corporate debt [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 19 21  
Postretirement Plans [Member] | Other Investments [Member] | Insurance Contracts [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 312 306  
Postretirement Plans [Member] | Other Investments [Member] | Other Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 15 12  
Fair value inputs Level 1 [Member] | U.S. Qualified Pension Plans [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 2,509 [6] 2,765 [6]  
Fair value inputs Level 1 [Member] | U.S. Qualified Pension Plans [Member] | Equity Securities [Member] | Global Equity Securities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 2,509 [6] 2,765 [6]  
Fair value inputs Level 1 [Member] | International Pension Plans [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 1,432 [6] 1,166 [6]  
Fair value inputs Level 1 [Member] | International Pension Plans [Member] | Equity Securities [Member] | Global Equity Securities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 1,432 [6] 1,166 [6]  
Fair value inputs Level 1 [Member] | Postretirement Plans [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 24 [5],[6] 29 [5],[6]  
Fair value inputs Level 1 [Member] | Postretirement Plans [Member] | Equity Securities [Member] | Global Equity Securities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 24 [6] 29 [6]  
Fair Value, Inputs, Level 2 [Member] | U.S. Qualified Pension Plans [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 7,911 [6] 6,464 [6]  
Fair Value, Inputs, Level 2 [Member] | U.S. Qualified Pension Plans [Member] | Cash and Cash Equivalents [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 2,111 [6] 1,196 [6]  
Fair Value, Inputs, Level 2 [Member] | U.S. Qualified Pension Plans [Member] | Equity Securities [Member] | Global Equity Securities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 12 [6]    
Fair Value, Inputs, Level 2 [Member] | U.S. Qualified Pension Plans [Member] | Equity Securities [Member] | Equity Commingled Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 1,794 [6] 1,708 [6]  
Fair Value, Inputs, Level 2 [Member] | U.S. Qualified Pension Plans [Member] | Debt Securities [Member] | Fixed Income Commingled Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 870 [6] 817 [6]  
Fair Value, Inputs, Level 2 [Member] | U.S. Qualified Pension Plans [Member] | Debt Securities [Member] | Government Bonds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 805 [6] 660 [6]  
Fair Value, Inputs, Level 2 [Member] | U.S. Qualified Pension Plans [Member] | Debt Securities [Member] | Corporate debt [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 1,966 [6] 2,083 [6]  
Fair Value, Inputs, Level 2 [Member] | U.S. Qualified Pension Plans [Member] | Other Investments [Member] | Insurance Contracts [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 353 [6]    
Fair Value, Inputs, Level 2 [Member] | International Pension Plans [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 4,920 [6] 4,935 [6]  
Fair Value, Inputs, Level 2 [Member] | International Pension Plans [Member] | Cash and Cash Equivalents [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 311 [6] 518 [6]  
Fair Value, Inputs, Level 2 [Member] | International Pension Plans [Member] | Equity Securities [Member] | Global Equity Securities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 81 [6] 292 [6]  
Fair Value, Inputs, Level 2 [Member] | International Pension Plans [Member] | Equity Securities [Member] | Equity Commingled Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 2,047 [6] 1,881 [6]  
Fair Value, Inputs, Level 2 [Member] | International Pension Plans [Member] | Debt Securities [Member] | Fixed Income Commingled Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 786 [6] 804 [6]  
Fair Value, Inputs, Level 2 [Member] | International Pension Plans [Member] | Debt Securities [Member] | Government Bonds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 1,015 [6] 932 [6]  
Fair Value, Inputs, Level 2 [Member] | International Pension Plans [Member] | Debt Securities [Member] | Corporate debt [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 542 [6] 376 [6]  
Fair Value, Inputs, Level 2 [Member] | International Pension Plans [Member] | Other Investments [Member] | Private Equity Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 4 [6] 4 [6]  
Fair Value, Inputs, Level 2 [Member] | International Pension Plans [Member] | Other Investments [Member] | Insurance Contracts [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 67 [6] 69 [6]  
Fair Value, Inputs, Level 2 [Member] | International Pension Plans [Member] | Other Investments [Member] | Other Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 67 [6] 59 [6]  
Fair Value, Inputs, Level 2 [Member] | Postretirement Plans [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 398 [5],[6] 385 [5],[6]  
Fair Value, Inputs, Level 2 [Member] | Postretirement Plans [Member] | Cash and Cash Equivalents [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 19 [6] 12 [6]  
Fair Value, Inputs, Level 2 [Member] | Postretirement Plans [Member] | Equity Securities [Member] | Equity Commingled Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 17 [6] 18 [6]  
Fair Value, Inputs, Level 2 [Member] | Postretirement Plans [Member] | Debt Securities [Member] | Fixed Income Commingled Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 8 [6] 9 [6]  
Fair Value, Inputs, Level 2 [Member] | Postretirement Plans [Member] | Debt Securities [Member] | Government Bonds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 8 [6] 7 [6]  
Fair Value, Inputs, Level 2 [Member] | Postretirement Plans [Member] | Debt Securities [Member] | Corporate debt [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 19 [6] 21 [6]  
Fair Value, Inputs, Level 2 [Member] | Postretirement Plans [Member] | Other Investments [Member] | Insurance Contracts [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 312 [6] 306 [6]  
Fair Value, Inputs, Level 2 [Member] | Postretirement Plans [Member] | Other Investments [Member] | Other Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 15 [6] 12 [6]  
Fair value inputs Level 3 [Member] | U.S. Qualified Pension Plans [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 1,585 [6] 1,367 [6]  
Fair value inputs Level 3 [Member] | U.S. Qualified Pension Plans [Member] | Equity Securities [Member] | Global Equity Securities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 1 [6] 1 [6]  
Fair value inputs Level 3 [Member] | U.S. Qualified Pension Plans [Member] | Debt Securities [Member] | Government Bonds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 3 [6]    
Fair value inputs Level 3 [Member] | U.S. Qualified Pension Plans [Member] | Debt Securities [Member] | Corporate debt [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 5 [6] 2 [6]  
Fair value inputs Level 3 [Member] | U.S. Qualified Pension Plans [Member] | Other Investments [Member] | Private Equity Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 920 [6] 899 [6]  
Fair value inputs Level 3 [Member] | U.S. Qualified Pension Plans [Member] | Other Investments [Member] | Other Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 656 [6] 465 [6]  
Fair value inputs Level 3 [Member] | International Pension Plans [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 766 [6] 598 [6]  
Fair value inputs Level 3 [Member] | International Pension Plans [Member] | Other Investments [Member] | Private Equity Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 51 [6] 17 [6]  
Fair value inputs Level 3 [Member] | International Pension Plans [Member] | Other Investments [Member] | Insurance Contracts [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets 366 [6] 366 [6]  
Fair value inputs Level 3 [Member] | International Pension Plans [Member] | Other Investments [Member] | Other Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Fair Value Of Plan Assets $ 349 [6] $ 215 [6]  
[1] The unfavorable change in our U.S. qualified plans' projected benefit obligations funded status was largely driven by changes in interest rates and lower than expected asset returns, partially offset by plan contributions of $2.0 billion.
[2] The U.S. qualified pension plans loan securities to other companies. Such securities may be onward loaned, sold or pledged by the other companies, but they may be required to be returned in a short period of time. We also require cash collateral from these companies and a maintenance margin of 103% of the fair value of the collateral relative to the fair value of the loaned securities. As of December 31, 2011, the fair value of collateral received was $2 million and, as of December 31, 2010, the fair value of collateral received was $581 million. The securities loaned continue to be included in the table above in Fair value of plan assets, and the securities-lending program for the pension plans will be discontinued in 2012.
[3] The favorable change in our international plans' projected benefit obligations funded status was largely driven by changes in actuarial assumptions, partially offset by the weakening of the U.S. dollar against the U.K. pound and euro. Outside the U.S., in general, we fund our defined benefit plans to the extent that tax or other incentives exist and we have accrued liabilities on our consolidated balance sheet to reflect those plans that are not fully funded.
[4] The unfavorable change in our postretirement plans' accumulated benefit obligations (ABO) funded status was largely driven by changes in actuarial assumptions.
[5] Reflects postretirement plan assets, which support a portion of our U.S. retiree medical plans.
[6] Fair values are determined based on valuation inputs categorized as Level 1, 2 or 3 (see Note 1E. Significant Accounting Policies: Fair Value).