Market Risk Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Variable Annuities
Market Risk Benefit [Line Items]
Market Risk Benefit, after Increase (Decrease) from Instrument-Specific Credit Risk	$ 7,250	$ 9,722	$ 9,997	$ 15,726
Market Risk Benefit, before Reinsurance and Cumulative Increase (Decrease) from Instrument-Specific Credit Risk Change	5,236	7,348	8,253	$ 11,639
Market Risk Benefit, Decrements	(180)	(176)	16
Market Risk Benefit, Increase (Decrease) from Future Expected Policyholder Behavior Assumption	(53)	260	212
Market Risk Benefit, Increase (Decrease) from Actual Policyholder Behavior Different from Expected	140	186	(48)
Market Risk Benefit, Increase (Decrease) from Interest Rate Change	(1,940)	(427)	(8,397)
Market Risk Benefit, Increase (Decrease) from Equity Market Change	(973)	(2,203)	3,806
Market Risk Benefit, Issuance	(4)	(7)	(47)
Market Risk Benefit, Effect of changes in risk margin	(72)	(34)	(152)
Market Risk Benefit, Aging of the Block and Other	970	1,496	1,224
AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, before Tax	2,014	2,374	1,744
Market Risk Benefit, Reinsurance Recoverable, after Allowance	17	43	71
Market Risk Benefit, after Reinsurance and Cumulative Increase (Decrease) from Instrument-Specific Credit Risk Change	$ 7,233	$ 9,679	$ 9,926
Market Risk Benefit, Weighted-Average Attained Age of Contract holder	73 years 10 months 24 days	73 years	71 years 9 months 18 days
Index-linked Annuities
Market Risk Benefit [Line Items]
Market Risk Benefit, after Increase (Decrease) from Instrument-Specific Credit Risk	$ 21	$ 9	$ 2