CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Premiums, reinsurance ceded	$ 138	$ 149	$ 158
Contract charges, reinsurance ceded	188	191	189
Contract benefits, reinsurance ceded	249	208	224
Interest credited to contractholder funds, reinsurance ceded	$ 44	$ 46	$ 46