Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Loss Contingencies [Line Items]
Impairment of right-of-use asset	$ 0	$ 3	$ 3	$ 16
Pledged Collateral	1,678		1,678		$ 1,881
Possible losses in excess of amounts accrued	25		25
Potential future loss	129		129
Henkel of America v. ReliaStar Life Insurance Company
Loss Contingencies [Line Items]
Potential future loss	47		47
Federal Home Loan Bank | Line of Credit
Loss Contingencies [Line Items]
Non-putable funding agreements issued to FHLB	$ 1,369		1,369		$ 1,461
Acquisition of mortgage loans
Loss Contingencies [Line Items]
Amount of purchase commitments			147
Purchase of limited partnership and private placement investments
Loss Contingencies [Line Items]
Amount of purchase commitments			1,054
Purchase of limited partnership and private placement investments | VOEs
Loss Contingencies [Line Items]
Amount of purchase commitments			$ 398