Income Taxes - Uncertain Tax Positions (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
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| Unrecognized Tax Benefits [Roll Forward] | |||
| Balance at beginning of period | $ 520 | $ 634 | $ 1,086 |
| Additions to current year tax positions | 45 | 12 | 22 |
| Additions to prior years' tax positions | 72 | 14 | 46 |
| Reductions to prior years' tax positions | (15) | (98) | (473) |
| Reductions in tax positions due to lapse of statutory limitations | (19) | (20) | (17) |
| Settlements | (18) | (10) | (26) |
| Other | 0 | (12) | (4) |
| Balance at end of period | 585 | 520 | $ 634 |
| Unrecognized tax benefit that would favorably affect effective tax rate | $ 386 | $ 356 | |
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- Definition This element represents a sum total of additions or reductions to reserves not separately reflected in the tabular roll for the period. No definition available.
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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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://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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://www.xbrl.org/2003/role/disclosureRef
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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://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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