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Income, Sales-Based And Other Taxes (Unrecognized Tax Benefits) (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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| Income, Sales-Based And Other Taxes [Abstract] | |||
| Balance at January 1 | $ 4,148 | $ 4,725 | $ 4,976 |
| Additions based on current year's tax positions | 822 | 830 | 547 |
| Additions for prior years' tax positions | 451 | 620 | 262 |
| Reductions for prior years' tax positions | (329) | (505) | (594) |
| Reductions due to lapse of the statute of limitations | (534) | ||
| Settlements with tax authorities | (145) | (999) | (592) |
| Foreign exchange effects / other | (25) | 11 | 126 |
| Balance at December 31 | $ 4,922 | $ 4,148 | $ 4,725 |
| X | ||||||||||
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- Definition
The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The gross amount of increases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The gross amount of decreases in unrecognized tax benefits resulting from lapses of the applicable statutes of limitations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Unrecognized Tax Benefits Foreign Exchange Effects Other No definition available.
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