Schedule IV - Reinsurance Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Life insurance in force, gross	$ 7,006	$ 7,540	$ 8,201
Life insurance in force, ceded	7,184	7,733	8,410
Life insurance in force, assumed	178	193	209
Life insurance in force, net	0	0	0
Total premiums, gross	34	32	31
Total premiums, ceded	2,459	0	0
Total premiums, assumed	0	0	0
Total premiums, net	$ (2,425)	$ 32	$ 31
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	$ 34	$ 32	$ 31
Total premiums, ceded	2,459	0	0
Total premiums, assumed	0	0	0
Total premiums, net	$ (2,425)	$ 32	$ 31
SEC Schedule, 12-17, Insurance Companies, Reinsurance, Premium, Percentage Assumed to Net	0.00%	0.00%	0.00%