Market Risk Benefits (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Variable Annuities
Market Risk Benefit [Roll Forward]
Balance, beginning of period	$ 7,250	$ 9,722
Balance, beginning of period, before effect of changes in nonperformance risk	5,236	7,348
Decrements	(62)	(67)
Effect of actual different from expected experience	(28)	88
Effect of changes in interest rates	222	(1,547)
Effect of changes in fund returns	(799)	(648)
Issuances	(2)	0
Effect of changes in risk margin	(11)	(53)
Aging of the block and other	656	663
Balance, end of period, before effect of changes in nonperformance risk	5,212	5,784
Effect of changes in nonperformance risk	1,763	2,049
Balance, end of period	6,975	7,833
Less: Reinsurance recoverable, end of period	14	22
Balance, end of period, net of reinsurance	$ 6,961	$ 7,811
Weighted-average attained age of contract holder	74 years 2 months 12 days	73 years 4 months 24 days
Index-linked Annuities
Market Risk Benefit [Roll Forward]
Balance, end of period	$ 22	$ 0