Segment Information (Premiums, Universal Life and Investment-Type Product Policy Fees and Other Revenues by Major Product Group) (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Segment Reporting Information [Line Items] | ||
| Total premiums, universal life and investment-type product policy fees and other revenues | $ 690 | $ 726 |
| Annuity products | ||
| Segment Reporting Information [Line Items] | ||
| Total premiums, universal life and investment-type product policy fees and other revenues | 489 | 491 |
| Life insurance products | ||
| Segment Reporting Information [Line Items] | ||
| Total premiums, universal life and investment-type product policy fees and other revenues | 198 | 233 |
| Other products | ||
| Segment Reporting Information [Line Items] | ||
| Total premiums, universal life and investment-type product policy fees and other revenues | $ 3 | $ 2 |