Taxes - Reconciliation of Beginning and Ending Balance of Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Unrecognized Tax Benefits [Roll Forward] | |||
| Balance at January 1, | $ 2,635 | $ 2,705 | $ 2,812 |
| Additions based on tax positions related to the current year | 92 | 91 | 114 |
| Additions for tax positions of prior years | 68 | 203 | 185 |
| Reductions for tax positions of prior years | (87) | (229) | (154) |
| Settlements | (5) | (70) | (50) |
| Lapses of statutes of limitations | (56) | (65) | (202) |
| Balance at December 31, | $ 2,647 | $ 2,635 | $ 2,705 |
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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/exampleRef
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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/exampleRef
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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/exampleRef
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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/exampleRef
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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/exampleRef
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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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