Fair Value of Financial Instruments - Schedule of Investment Holdings Movements (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances	$ 763	$ 590	$ 1,507	$ 917
Sales	(319)	(119)	(410)	(263)
Maturities	(6)	1	(26)	(4)
Settlements	88	(118)	65	(224)
Calls	(51)	(11)	(67)	(12)
Total	475	343	1,069	414
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	414	364	660	641
Sales	(243)	(58)	(288)	(199)
Maturities	(6)	0	(6)	(2)
Settlements	(123)	(114)	(225)	(225)
Calls	(10)	0	(10)	(1)
Total	32	192	131	214
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	68	6	75	6
Sales	0	0	0	0
Maturities	0	0	0	0
Settlements	(1)	0	(1)	0
Calls	0	0	0	0
Total	67	6	74	6
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	33	15	55	15
Sales	(15)	0	(15)	0
Maturities	0	0	0	0
Settlements	0	0	0	0
Calls	0	0	0	0
Total	18	15	40	15
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	577	462	1,171	726
Sales	(40)	(30)	(40)	(30)
Maturities	0	0	(10)	0
Settlements	(77)	(56)	(167)	(119)
Calls	(41)	(11)	(57)	(11)
Total	419	365	897	566
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	1		21
Sales	0		(2)
Maturities	0		0
Settlements	0		0
Calls	0		0
Total	1	0	19	0
Trading securities
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances	11	5	61	5
Sales	(10)	0	(52)	(2)
Maturities	0	0	0	0
Settlements	(2)	(3)	(6)	(14)
Calls	0	0	0	0
Total	(1)	2	3	(11)
Equity securities
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances	7	0	15	0
Sales	(11)	(1)	(12)	(1)
Maturities	0	0	0	0
Settlements	0	0	0	0
Calls	0	0	0	0
Total	(4)	(1)	3	(1)
Mortgage loans on real estate
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances	1	0	1	1
Sales	0	(30)	(1)	(31)
Maturities	0	0	0	0
Settlements	(2)	(5)	(2)	(5)
Calls	0	0	0	0
Total	(1)	(35)	(2)	(35)
Derivative investments
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances		(3)		4
Sales		0		0
Maturities		1		(2)
Settlements		0		0
Calls		0		0
Total		(2)	0	2
Other investments
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract]
Issuances	9		11
Sales	0		0
Maturities	0		(10)
Settlements	0		0
Calls	0		0
Total	9		1
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	67	26	93	52
Sales	0	0	0	0
Maturities	0	0	0	0
Settlements	4	(43)	(22)	(69)
Calls	0	0	0	0
Total	71	(17)	71	(17)
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	(425)	(285)	(656)	(533)
Sales	0	0	0	0
Maturities	0	0	0	0
Settlements	289	103	488	208
Calls	0	0	0	0
Total	$ (136)	$ (182)	$ (168)	$ (325)