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Income Taxes - Undistributed Earnings and Foreign Location Information (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income Tax Disclosure [Abstract] |  |  |
Income tax benefits attributable to reduced tax rates or exemptions in foreign locations | $ 204 | $ 163 | $ 127
EPS impact of reduced tax rates or exemptions in foreign locations (in dollars per share) | $ 36 | $ 28 | $ 22
Previously undistributed earnings from non-U.S. subsidiaries permanently reinvested | $ 17,700 |  |
Reinvested earnings that may be repatriated from non-U.S. subsidiaries | 5,500 |  |
Undistributed earnings from non-U.S. subsidiaries permanently reinvested | $ 12,200 |  |

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- Definition The amount of income taxes from which a reporting entity is exempt or for which it will receive a reduction in income taxes as a result of the income tax holiday granted by the taxing jurisdiction. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 11.C) -URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330215-122817 + Details
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