Investments (Narrative) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
Dec. 31, 2024 |
|
| Gain (Loss) on Securities [Line Items] | |||||
| Mortgage loan losses due to changes in expected credit losses | $ 5 | $ 0 | $ 5 | $ 0 | |
| Commitments to purchase or fund privately placed debt securities | 1,805 | 1,805 | |||
| Commitments to sell various privately placed debt securities | 80 | 80 | |||
| Fixed maturity securities | |||||
| Gain (Loss) on Securities [Line Items] | |||||
| Debt securities, available-for-sale, accrued interest, after allowance for credit loss | 451 | $ 444 | 451 | $ 444 | $ 442 |
| Mortgage loans | |||||
| Gain (Loss) on Securities [Line Items] | |||||
| Financing receivable, accrued interest, after allowance for credit loss | $ 4 | $ 4 | |||