Schedule IV - Reinsurance Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Life insurance in force, gross	$ 8,201	$ 8,974	$ 9,869
Life insurance in force, ceded	8,410	9,202	10,116
Life insurance in force, assumed	209	228	247
Life insurance in force, net	0	0	0
Total premiums, gross	31	41	48
Total premiums, ceded	0	0	0
Total premiums, assumed	0	0	0
Total premiums, net	$ 31	$ 41	$ 48
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	$ 31	$ 41	$ 48
Total premiums, ceded	0	0	0
Total premiums, assumed	0	0	0
Total premiums, net	$ 31	$ 41	$ 48
SEC Schedule, 12-17, Insurance Companies, Reinsurance, Premium, Percentage Assumed to Net	0.00%	0.00%	0.00%