Market Risk Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Market Risk Benefit [Line Items]
Market Risk Benefit, Increase (Decrease) from Equity Market Change	$ 44	$ 10	$ (10)
Market Risk Benefit, after Increase (Decrease) from Instrument-Specific Credit Risk	206	249
Market Risk Benefit, Net Amount at Risk	223	258
Insurance, Other [Member] | Americas [Member] | Other Operating Segment
Market Risk Benefit [Line Items]
Market Risk Benefit, after Reinsurance and Cumulative Increase (Decrease) from Instrument-Specific Credit Risk Change	206	249	247
Market Risk Benefit, before Reinsurance and Cumulative Increase (Decrease) from Instrument-Specific Credit Risk Change	209	253	$ 263
Market Risk Benefit, Interest Expense	11	14
Market Risk Benefit, Attributed Fee Collected	25	25
Market Risk Benefit, Benefit Payment	(1)	(1)
Market Risk Benefit, Increase (Decrease) from Future Expected Policyholder Behavior Assumption	3	16
Market Risk Benefit, Increase (Decrease) from Interest Rate Change	(48)	(5)
Market Risk Benefit, Increase (Decrease) from Equity Market Change	(38)	(52)
Market Risk Benefit, Increase (Decrease) from Volatility	0	(6)
Market Risk Benefit, Increase (Decrease) from Other Assumption	(13)	(15)
Market Risk Benefit, Increase (Decrease) from Actual Policyholder Behavior Different from Expected	17	14
AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, before Tax	(3)	(4)
Market Risk Benefit, after Increase (Decrease) from Instrument-Specific Credit Risk	206	249
Market Risk Benefit, Reinsurance Recoverable, after Allowance	0	0
Market Risk Benefit, Net Amount at Risk	$ 1,250	$ 1,401
Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age	71 years	71 years