Future Policy Benefits - Schedule of Balances and Changes in the Deferred Profit Liability (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Immediate annuities | |||
| Deferred Profit Liability Rollforward | |||
| Balance, beginning of year | $ 90 | $ 90 | |
| Effect of actual variances from expected experience | (2) | $ 2 | |
| Balance adjusted for variances from expectation | 88 | 92 | |
| Issuances | 1 | 6 | |
| Interest accrual | 0 | 1 | |
| Amortization | (2) | (9) | |
| Balance, end of period | 87 | 90 | |
| Effect of actual variances from expected experience | (2) | 2 | |
| PRT | |||
| Deferred Profit Liability Rollforward | |||
| Balance, beginning of year | 7 | 6 | |
| Effect of actual variances from expected experience | 1 | 1 | |
| Balance adjusted for variances from expectation | 8 | 7 | |
| Issuances | 0 | 1 | |
| Interest accrual | 0 | 0 | |
| Amortization | 0 | (1) | |
| Balance, end of period | $ 8 | 7 | |
| Effect of actual variances from expected experience | $ 1 | $ 1 |