Schedule IV - Reinsurance Information (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Life insurance in force, gross		$ 6,371	$ 7,006	$ 7,540
Life insurance in force, ceded		6,536	7,184	7,733
Life insurance in force, assumed		165	178	193
Life insurance in force, net		0	0	0
Total premiums, gross		20	34	32
Total premiums, ceded		2	2,459	0
Total premiums, assumed		0	0	0
Total premiums, net	$ 32	$ 18	$ (2,425)	$ 32
SEC Schedule, 12-17, Insurance Companies, Reinsurance, Premium, Percentage Assumed to Net		0.00%	0.00%	0.00%
Accident and health insurance
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Total premiums, gross		$ 0	$ 0	$ 0
Total premiums, ceded		0	0	0
Total premiums, assumed		0	0	0
Total premiums, net		$ 0	$ 0	$ 0
SEC Schedule, 12-17, Insurance Companies, Reinsurance, Premium, Percentage Assumed to Net		0.00%	0.00%	0.00%
Annuities
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Total premiums, gross		$ 20	$ 34	$ 32
Total premiums, ceded		2	2,459	0
Total premiums, assumed		0	0	0
Total premiums, net		$ 18	$ (2,425)	$ 32
SEC Schedule, 12-17, Insurance Companies, Reinsurance, Premium, Percentage Assumed to Net		0.00%	0.00%	0.00%