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Segment Information - Reconciliation of Income (Loss) from Operations by Segment to Consolidated Net Income (Loss) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income (loss) | $ (528) |  |  | $ 853 |  |  | $ 1,588 | $ 483
Other Operations |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income (loss) | (84) |  |  | (102) |  |  | (276) | (293)
Net annuity product features, pre-tax |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income (loss) | (381) |  |  | 1,322 |  |  | 1,319 | 1,076
Net life insurance product features, pre-tax |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income (loss) | (125) |  |  | 108 |  |  | (253) | (168)
Credit loss-related adjustments, pre-tax |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income (loss) | (88) |  |  | (27) |  |  | (124) | (53)
Investment gains (losses), pre-tax |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income (loss) | (105) |  |  | (400) |  |  | (416) | (1,126)
Changes in the fair value of reinsurance-related embedded derivatives, trading securities and certain mortgage loans, pre-tax |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income (loss) | (446) |  |  | (29) |  |  | (51) | (27)
Gains (losses) on other non-financial assets – sale of subsidiaries/businesses, pre-tax |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income (loss) | (2) |  |  | 0 |  |  | 582 | 0
Other items, pre-tax |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income (loss) | (19) |  |  | (12) |  |  | (238) | (23)
Certain legal accruals |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income (loss) |  |  | $ (114) | (12) |  |  |  |
Severance expense for workforce realignment |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income (loss) | (16) | $ (7) | (49) |  | $ (3) | $ (3) |  |
Transaction and integration costs for acquisitions or divestiture |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income (loss) | (2) | (27) | (10) | (1) | (9) |  |  |
Deferred compensation mark-to-market adjustment |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income (loss) | (1) | $ 1 | $ (13) | 1 | $ (8) | $ 12 |  |
Income tax benefit (expense) related to the above pre-tax items |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income (loss) | 246 |  |  | (193) |  |  | (202) | 76
Annuities | Operating Segments |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income (loss) | 301 |  |  | 248 |  |  | 857 | 794
Life Insurance | Operating Segments |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income (loss) | 22 |  |  | (173) |  |  | (48) | (153)
Group Protection | Operating Segments |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income (loss) | 109 |  |  | 68 |  |  | 318 | 247
Retirement Plan Services | Operating Segments |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income (loss) | $ 44 |  |  | $ 43 |  |  | $ 120 | $ 133

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