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Fair Value of Financial Instruments - Schedule of Investment Holdings Movements (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |  |
Issuances | $ 459 | $ 264 | $ 1,377 | $ 609
Sales | (81) | (28) | (344) | (223)
Maturities | 1 | (1) | (3) | (35)
Settlements | 3 | (130) | (223) | (668)
Calls | (46) | 0 | (58) | (13)
Total | 336 | 105 | 749 | (330)
Corporate bonds | Fixed maturity AFS securities, at fair value |  |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |  |
Issuances | 281 | 178 | 922 | 587
Sales | (61) | (28) | (260) | (65)
Maturities | 0 | 0 | (2) | (34)
Settlements | (170) | (45) | (395) | (347)
Calls | 0 | 0 | (1) | (11)
Total | 50 | 105 | 264 | 130
State and municipal bonds | Fixed maturity AFS securities, at fair value |  |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |  |
Issuances |  |  |  | 0
Sales |  |  |  | (1)
Maturities |  |  |  | 0
Settlements |  |  |  | 0
Calls |  |  |  | 0
Total |  | 0 | 0 | (1)
RMBS | Fixed maturity AFS securities, at fair value |  |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |  |
Issuances |  |  | 6 | 5
Sales |  |  | 0 | 0
Maturities |  |  | 0 | 0
Settlements |  |  | 0 | 0
Calls |  |  | 0 | 0
Total | 0 | 0 | 6 | 5
CMBS | Fixed maturity AFS securities, at fair value |  |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |  |
Issuances | 14 |  | 29 | 0
Sales | 0 |  | 0 | 0
Maturities | 0 |  | 0 | 0
Settlements | 0 |  | 0 | (4)
Calls | 0 |  | 0 | 0
Total | 14 |  | 29 | (4)
ABS | Fixed maturity AFS securities, at fair value |  |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |  |
Issuances | 402 | 279 | 1,128 | 736
Sales | (20) | 0 | (50) | (2)
Maturities | 0 | 0 | 0 | 0
Settlements | (104) | (32) | (223) | (167)
Calls | (46) | 0 | (57) | 0
Total | 232 | 247 | 798 | 567
Hybrid and redeemable preferred securities | Fixed maturity AFS securities, at fair value |  |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |  |
Issuances | 16 |  | 16 | 0
Sales | 0 |  | 0 | 0
Maturities | 0 |  | 0 | 0
Settlements | 0 |  | 0 | 0
Calls | 0 |  | 0 | (2)
Total | 16 | 0 | 16 | (2)
Trading securities |  |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |  |
Issuances | 1 | 0 | 6 | 0
Sales | 0 | 0 | (2) | (155)
Maturities | 0 | 0 | 0 | 0
Settlements | (7) | (4) | (21) | (81)
Calls | 0 | 0 | 0 | 0
Total | (6) | (4) | (17) | (236)
Equity securities |  |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |  |
Issuances | 1 |  | 1 | 1
Sales | 0 |  | (1) | 0
Maturities | 0 |  | 0 | 0
Settlements | 0 |  | 0 | 0
Calls | 0 |  | 0 | 0
Total | 1 | 0 | 0 | 1
Mortgage loans on real estate |  |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |  |
Issuances | 0 | 1 | 1 | 5
Sales | 0 | 0 | (31) | 0
Maturities | 0 | 0 | 0 | 0
Settlements | (1) | (89) | (6) | (179)
Calls | 0 | 0 | 0 | 0
Total | (1) | (88) | (36) | (174)
Derivative investments |  |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |  |
Issuances | 0 |  | 4 | 9
Sales | 0 |  | 0 | 0
Maturities | 1 |  | (1) | (1)
Settlements | 0 | 0 | 0 | 0
Calls | 0 | 0 | 0 | 0
Total | 1 | 8 | 3 | 8
Other investments |  |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |  |
Issuances | 10 |  | 10 |
Sales | 0 |  | 0 |
Maturities | 0 |  | 0 |
Settlements | 0 |  | 0 |
Calls | 0 |  | 0 |
Total | 10 |  | 10 |
Indexed annuity ceded embedded derivatives | Other Assets |  |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |  |
Issuances | 51 | 28 | 103 | 112
Sales | 0 | 0 | 0 | 0
Maturities | 0 | 0 | 0 | 0
Settlements | (77) | 4 | (149) | (14)
Calls | 0 | 0 | 0 | 0
Total | (26) | 32 | (46) | 98
RILA, fixed indexed annuity and IUL contracts | Policyholder Account Balances |  |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |  |
Issuances | (317) | (231) | (849) | (846)
Sales | 0 | 0 | 0 | 0
Maturities | 0 | 0 | 0 | 0
Settlements | 362 | 36 | 571 | 124
Calls | 0 | 0 | 0 | 0
Total | $ 45 | $ (195) | $ (278) | $ (722)

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