Investments (Accrued Investment Income) (Details) - USD ($) $ in Millions |
Mar. 31, 2026 |
Dec. 31, 2025 |
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|---|---|---|---|---|
| Net Investment Income [Line Items] | ||||
| Accrued investment income | [1] | $ 3,633 | $ 3,636 | |
| Fixed maturities | ||||
| Net Investment Income [Line Items] | ||||
| Accrued investment income | 3,070 | 3,089 | ||
| Equity securities | ||||
| Net Investment Income [Line Items] | ||||
| Accrued investment income | 19 | 11 | ||
| Commercial mortgage and other loans | ||||
| Net Investment Income [Line Items] | ||||
| Accrued investment income | 263 | 250 | ||
| Policy loans | ||||
| Net Investment Income [Line Items] | ||||
| Accrued investment income | 233 | 230 | ||
| Other invested assets | ||||
| Net Investment Income [Line Items] | ||||
| Accrued investment income | 10 | 10 | ||
| Short-term investments and cash equivalents | ||||
| Net Investment Income [Line Items] | ||||
| Accrued investment income | $ 38 | $ 46 | ||
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