Deferred Policy Acquisition Costs, Value of Business Acquired and Other Intangibles (Unearned Revenue) (Details) - USD ($) $ in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Universal Life Insurance | ||
| Deferred Revenue Arrangement [Line Items] | ||
| Balance, beginning of period | $ 360 | $ 357 |
| Capitalization | 19 | 18 |
| Amortization | (17) | (18) |
| Balance, end of period | 362 | 357 |
| ULSG | ||
| Deferred Revenue Arrangement [Line Items] | ||
| Balance, beginning of period | 793 | 715 |
| Capitalization | 70 | 79 |
| Amortization | (42) | (36) |
| Balance, end of period | 821 | 758 |
| Variable Annuities | ||
| Deferred Revenue Arrangement [Line Items] | ||
| Balance, beginning of period | 54 | 60 |
| Capitalization | 0 | 0 |
| Amortization | (3) | (3) |
| Balance, end of period | $ 51 | $ 57 |