Reserves for Future Policy Benefits (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 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	$ 576		$ 596
Ending liability balance	576
Annuaitization Benefit
Movement in Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Gross [Roll Forward]
Reserve for future policy benefits	576	$ 611	$ 596	$ 638
Incurred	63	33
Paid	(65)	(54)
Change in unrealized investment gains and losses	(18)	(6)
Ending liability balance	576	611
Movement in Liabilities for Guarantees on Long-Duration Contracts, Reinsurance Recoverable [Roll Forward]
Ending reinsurance recoverable asset	$ 33	$ 24