Derivative Financial Instruments - Collateral Held and Pledged (Detail) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
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| Collateral held: | ||||||
| Cash (obligation to return cash collateral is recorded in short-term borrowings) | $ 32 | $ 44 | ||||
| Securities at fair value - corporate derivatives (not recorded in financial statements) | [1] | 0 | 0 | |||
| Securities at fair value - on-balance sheet securitization derivatives (not recorded in financial statements) | [2] | 0 | 0 | |||
| Total collateral held | 32 | 44 | ||||
| Derivative asset at fair value including accrued interest | 35 | 51 | ||||
| Collateral pledged to others: | ||||||
| Cash (right to receive return of cash collateral is recorded in investments) | 52 | 40 | ||||
| Total collateral pledged | 52 | 40 | ||||
| Derivative liability at fair value including accrued interest and premium receivable | $ 95 | $ 84 | ||||
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- Definition Collateral held. No definition available.
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- Definition Collateral pledged to others. No definition available.
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- Definition Derivative asset at fair value including accrued interest. No definition available.
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- Definition Securities fair value on balance sheet securitization derivatives. No definition available.
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- Definition Fair value of securities received as collateral against derivative assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of obligation to return securities collateral under master netting arrangements that have not been offset against derivative assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Fair value of securities pledged as collateral against derivative liabilities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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