Selected Quarterly Data (Unaudited)

12 Months Ended

Dec. 31, 2014

Selected Quarterly Data (Unaudited) [Abstract]

Selected Quarterly Data (Unaudited) [Text Block]

20. Selected Quarterly Data (Unaudited)

Millions, Except Per Share Amounts
2014	Mar. 31		Jun. 30		Sep. 30		Dec. 31
Operating revenues	$	5,638	$	6,015	$	6,182	$	6,153
Operating income		1,854		2,196		2,330		2,373
Net income		1,088		1,291		1,370		1,431
Net income per share:
Basic		1.20		1.43		1.53		1.62
Diluted		1.19		1.43		1.53		1.61

Millions, Except Per Share Amounts
2013	Mar. 31		Jun. 30		Sep. 30		Dec. 31
Operating revenues	$	5,290	$	5,470	$	5,573	$	5,630
Operating income		1,633		1,878		1,962		1,973
Net income		957		1,106		1,151		1,174
Net income per share:
Basic		1.02		1.19		1.25		1.28
Diluted		1.02		1.18		1.24		1.27

Per share net income for the four quarters combined may not equal the per share net income for the year due to rounding.

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

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