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Condensed Consolidated Statements of Changes in Common Shareholders' Equity (Unaudited) (USD $)
In Millions, except Share data, unless otherwise specified |
Total
USD ($)
|
Common Shares (Units) [Member]
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Treasury Shares (Units) [Member]
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Common Shares [Member]
USD ($)
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Paid-in-Surplus [Member]
USD ($)
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Retained Earnings [Member]
USD ($)
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Treasury Stock [Member]
USD ($)
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Accumulated Other Comprehensive Income/(Loss) (Note 10) [Member]
USD ($)
|
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|---|---|---|---|---|---|---|---|---|---|---|
| Shareholders' equity (Note 4), beginning balance at Dec. 31, 2012 | $ 19,877 | $ 2,773 | $ 4,113 | $ 20,884 | $ (6,707) | $ (1,186) | ||||
| Common shares (Note 4), beginning balance at Dec. 31, 2012 | 1,109,100,000 | (170,200,000) | ||||||||
| Comprehensive income [Abstract] | ||||||||||
| Net income | 2,063 | 2,063 | ||||||||
| Other comp. income | [1] | 38 | 38 | |||||||
| Conversion, stock option exercises, forfeitures, and other | 47 | 1 | 49 | (3) | ||||||
| Conversion, stock option exercises, forfeitures, and other (shares) | 600,000 | 1,100,000 | ||||||||
| Share repurchases (Note 18) | (857) | (857) | ||||||||
| Share repurchases (Note 18) (Shares) | (11,885,740) | (11,900,000) | ||||||||
| Cash dividends declared | (644) | (644) | ||||||||
| Shareholders' equity, ending balance at Jun. 30, 2013 | 20,524 | 2,774 | 4,162 | 22,303 | (7,567) | (1,148) | ||||
| Common shares, ending balance at Jun. 30, 2013 | 1,109,700,000 | (181,000,000) | ||||||||
| Shareholders' equity (Note 4), beginning balance at Dec. 31, 2013 | 21,225 | 2,774 | 4,210 | 23,901 | (8,910) | (750) | ||||
| Common shares (Note 4), beginning balance at Dec. 31, 2013 | 912,001,996 | 1,109,700,000 | (197,700,000) | |||||||
| Comprehensive income [Abstract] | ||||||||||
| Net income | 2,379 | 2,379 | ||||||||
| Other comp. income | [1] | 36 | 36 | |||||||
| Conversion, stock option exercises, forfeitures, and other | 113 | 1 | 59 | 53 | ||||||
| Conversion, stock option exercises, forfeitures, and other (shares) | 400,000 | 2,600,000 | ||||||||
| Share repurchases (Note 18) | (1,489) | (1,489) | ||||||||
| Share repurchases (Note 18) (Shares) | (15,960,000) | (16,000,000) | ||||||||
| Cash dividends declared | (824) | (824) | ||||||||
| Shareholders' equity, ending balance at Jun. 30, 2014 | $ 21,440 | $ 2,775 | $ 4,269 | $ 25,456 | $ (10,346) | $ (714) | ||||
| Common shares, ending balance at Jun. 30, 2014 | 899,019,384 | 1,110,100,000 | (211,100,000) | |||||||
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