Policyholder Account Balances, Future Policy Benefits and Claims - Change in Unearned Income (Details) - USD ($) $ in Millions |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
|
| Deferred Income [Roll Forward] | ||
| Beginning balance | $ 651 | $ 570 |
| Deferral of revenue | 64 | 127 |
| Amortization | (26) | (46) |
| Ending balance | 689 | 651 |
| Universal Life Insurance | ||
| Deferred Income [Roll Forward] | ||
| Beginning balance | 26 | 26 |
| Deferral of revenue | 0 | 1 |
| Amortization | (1) | (1) |
| Ending balance | 25 | 26 |
| Variable Universal Life Insurance | ||
| Deferred Income [Roll Forward] | ||
| Beginning balance | 307 | 249 |
| Deferral of revenue | 43 | 79 |
| Amortization | (12) | (21) |
| Ending balance | 338 | 307 |
| Indexed Universal Life Insurance | ||
| Deferred Income [Roll Forward] | ||
| Beginning balance | 318 | 295 |
| Deferral of revenue | 21 | 47 |
| Amortization | (13) | (24) |
| Ending balance | $ 326 | $ 318 |