Investments (Evaluation of Fixed Maturity Securities AFS in an Unrealized Loss Position- Narrative) (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
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| Debt Securities, Available-for-sale [Line Items] | ||
| Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ 31,300 | |
| Equal to or Greater than 12 Months Gross Unrealized Loss | 28,349 | $ 26,322 |
| Below Investment Grade | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Equal to or Greater than 12 Months Gross Unrealized Loss | 342 | $ 320 |
| Fixed maturity securities without an allowance for credit loss | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Change in Gross Unrealized Temporary Loss | $ 3,200 |
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- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Amount, before tax and after adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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