Income And Other Taxes (Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Income And Other Taxes [Abstract] | |||
| Balance at January 1 | $ 9,174 | $ 8,783 | $ 9,468 |
| Additions based on current year's tax positions | 287 | 375 | 522 |
| Additions for prior years' tax positions | 120 | 240 | 523 |
| Reductions for prior years' tax positions | (97) | (125) | (865) |
| Reductions due to lapse of the statute of limitations | (279) | (5) | (113) |
| Settlements with tax authorities | (538) | (68) | (782) |
| Foreign exchange effects/other | 177 | (26) | 30 |
| Balance at December 31 | $ 8,844 | $ 9,174 | $ 8,783 |
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- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Unrecognized Tax Benefits Foreign Exchange Effects Other No definition available.
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