Income Tax - Summary of Calculation of Income Tax Expense Accrued (Detail) - USD ($) $ in Millions |
12 Months Ended | ||||||
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Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Calculation of the Income Tax Expense Accrued [Abstract] | |||||||
| Current income tax | $ (61) | $ (137) | $ (45) | ||||
| Deferred income tax | (599) | 1,510 | [1] | 426 | [1] | ||
| Regularization plan associated with the calculation of tax loss carryforwards | (1,049) | 0 | 0 | ||||
| Income tax (expense)/ benefit | $ (1,709) | $ 1,373 | $ 381 | ||||
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- References Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The amount of tax expense (income) relating to changes in deferred tax liabilities and deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Income tax (expense)/ benefit. No definition available.
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- Definition Calculation of the income tax expense accrued. No definition available.
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- Definition Regularization Plan Associated With Tax Loss Carryforwards Amount. No definition available.
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