Income Taxes - Reconciliation of unrecognized tax benefits (UTB) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Federal, State and Foreign Tax | |||
| Gross UTB Balance, beginning balance | $ 1,071 | $ 1,113 | $ 1,167 |
| Additions based on tax positions related to the current year | 115 | 91 | 74 |
| Additions for tax positions of prior years | 36 | 22 | 106 |
| Additions related to recent acquisitions | 0 | 0 | 0 |
| Reductions for tax positions of prior years | (138) | (60) | (173) |
| Settlements | (118) | (57) | (8) |
| Reductions due to lapse of applicable statute of limitations | (39) | (38) | (53) |
| Gross UTB Balance, ending balance | 927 | 1,071 | 1,113 |
| Net UTB that would impact the effective tax rate | $ 965 | $ 1,112 | $ 1,145 |
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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 acquisitions. No definition available.
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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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