Reserves for Future Policy Benefits (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Movement in Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Gross [Roll Forward]
Reserve for future policy benefits	$ 567		$ 596
Ending liability balance	567
Annuaitization Benefit
Movement in Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Gross [Roll Forward]
Reserve for future policy benefits	567	$ 602	$ 596	$ 638
Incurred	80	45
Paid	(91)	(74)
Change in unrealized investment gains and losses	(18)	(7)
Ending liability balance	567	602
Movement in Liabilities for Guarantees on Long-Duration Contracts, Reinsurance Recoverable [Roll Forward]
Ending reinsurance recoverable asset	$ 31	$ 22