Investments (Accrued Investment Income) (Details) - USD ($) $ in Millions |
Jun. 30, 2025 |
Dec. 31, 2024 |
||
|---|---|---|---|---|
| Net Investment Income [Line Items] | ||||
| Accrued investment income | [1] | $ 3,560 | $ 3,441 | |
| Fixed maturities | ||||
| Net Investment Income [Line Items] | ||||
| Accrued investment income | 3,025 | 2,892 | ||
| Equity securities | ||||
| Net Investment Income [Line Items] | ||||
| Accrued investment income | 9 | 8 | ||
| Commercial mortgage and other loans | ||||
| Net Investment Income [Line Items] | ||||
| Accrued investment income | 224 | 228 | ||
| Policy loans | ||||
| Net Investment Income [Line Items] | ||||
| Accrued investment income | 246 | 236 | ||
| Other invested assets | ||||
| Net Investment Income [Line Items] | ||||
| Accrued investment income | 11 | 12 | ||
| Short-term investments and cash equivalents | ||||
| Net Investment Income [Line Items] | ||||
| Accrued investment income | $ 45 | $ 65 | ||
| ||||