Segment Information - Reconciliation of Net Investment Income from Segments to Consolidated (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Segment Reporting Information [Line Items] | |||
| Net investment income | $ 5,525 | $ 5,879 | $ 5,515 |
| Operating Segments | Annuities | |||
| Segment Reporting Information [Line Items] | |||
| Net investment income | 1,636 | 1,668 | 1,463 |
| Operating Segments | Life Insurance | |||
| Segment Reporting Information [Line Items] | |||
| Net investment income | 2,434 | 2,712 | 2,587 |
| Operating Segments | Group Protection | |||
| Segment Reporting Information [Line Items] | |||
| Net investment income | 348 | 339 | 334 |
| Operating Segments | Retirement Plan Services | |||
| Segment Reporting Information [Line Items] | |||
| Net investment income | 997 | 1,012 | 976 |
| Other Operations | |||
| Segment Reporting Information [Line Items] | |||
| Net investment income | $ 110 | $ 148 | $ 155 |