|
Condensed Consolidated Statements of Changes in Common Shareholders' Equity (Unaudited) (USD $)
In Millions, except Share data |
Total
USD ($)
|
Common Shares (Units) [Member]
|
Treasury Stock (Units) [Member]
|
Common Shares [Member]
USD ($)
|
Paid-in-Surplus [Member]
USD ($)
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Retained Earnings [Member]
USD ($)
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Treasury Stock [Member]
USD ($)
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Accumulated Other Comprehensive Loss (Note 9) [Member]
USD ($)
|
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|---|---|---|---|---|---|---|---|---|---|---|---|
| Stockholders' equity, beginning balance at Dec. 31, 2009 | $ 16,801 | $ 1,384 | $ 3,968 | $ 15,027 | $ (2,924) | $ (654) | |||||
| Common shares, beginning balance at Dec. 31, 2009 | 553,500,000 | (48,500,000) | |||||||||
| Comprehensive income [Abstract] | |||||||||||
| Net income | 1,227 | 0 | 0 | 1,227 | 0 | 0 | |||||
| Other comp. income | 6 | [1] | 0 | 0 | 0 | 0 | 6 | ||||
| Total comp. income (Note 9) | 1,233 | ||||||||||
| Conversion, stock option exercises, forfeitures, and other | 58 | 1 | 10 | 0 | 47 | 0 | |||||
| Conversion, stock option exercises, forfeitures, and other (shares) | 400,000 | 900,000 | |||||||||
| Share repurchases (Note 17) | (466) | 0 | 0 | 0 | (466) | 0 | |||||
| Share repurchases (Note 17) (shares) | (6,496,400) | 0 | (6,500,000) | ||||||||
| Cash dividends declared | (303) | 0 | 0 | (303) | 0 | 0 | |||||
| Stockholders' equity, ending balance at Jun. 30, 2010 | 17,323 | 1,385 | 3,978 | 15,951 | (3,343) | (648) | |||||
| Common shares, ending balance at Jun. 30, 2010 | 553,900,000 | (54,100,000) | |||||||||
| Stockholders' equity, beginning balance at Dec. 31, 2010 | 17,763 | 1,385 | 3,985 | 17,154 | (4,027) | (734) | |||||
| Common shares, beginning balance at Dec. 31, 2010 | 491,565,880 | 553,900,000 | (62,300,000) | ||||||||
| Comprehensive income [Abstract] | |||||||||||
| Net income | 1,424 | 0 | 0 | 1,424 | 0 | 0 | |||||
| Other comp. income | 15 | [1] | 0 | 0 | 0 | 0 | 15 | ||||
| Total comp. income (Note 9) | 1,439 | ||||||||||
| Conversion, stock option exercises, forfeitures, and other | 131 | 1 | 14 | 0 | 116 | 0 | |||||
| Conversion, stock option exercises, forfeitures, and other (shares) | 400,000 | 2,100,000 | |||||||||
| Share repurchases (Note 17) | (608) | 0 | 0 | 0 | (608) | 0 | |||||
| Share repurchases (Note 17) (shares) | (6,212,577) | 0 | (6,200,000) | ||||||||
| Cash dividends declared | (419) | 0 | 0 | (419) | 0 | 0 | |||||
| Stockholders' equity, ending balance at Jun. 30, 2011 | $ 18,306 | $ 1,386 | $ 3,999 | $ 18,159 | $ (4,519) | $ (719) | |||||
| Common shares, ending balance at Jun. 30, 2011 | 487,935,652 | 554,300,000 | (66,400,000) | ||||||||
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