Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Unrecognized Tax Benefits | |||
| Beginning balance | $ 5,264 | $ 2,661 | $ 2,852 |
| Increase due to acquisition | 0 | 2,674 | 0 |
| Increase due to current year tax positions | 208 | 91 | 113 |
| Increase due to prior year tax positions | 137 | 59 | 499 |
| Decrease due to prior year tax positions | (62) | (7) | (21) |
| Settlements | (24) | (141) | (749) |
| Lapse of statutes of limitations | (34) | (73) | (33) |
| Ending balance | 5,489 | 5,264 | 2,661 |
| Net amount of potential tax benefits that would impact the entity's effective tax rate | 5,200 | 5,000 | |
| Reimbursement receivable for unrecognized tax benefits and related interest and penalties for periods after separation | 79 | ||
| Interest and penalties | 161 | 142 | 51 |
| Accrued interest and penalties | 803 | $ 642 | $ 191 |
| Reasonably possible amount that gross unrecognized tax benefits may change within the next twelve months, high end of range | $ 225 | ||
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- Definition Represents the amount of reimbursement receivable for unrecognized tax benefits and related interest and penalties. No definition available.
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- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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 accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the 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 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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