CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 143	$ 185	$ 556	$ 639
Other comprehensive loss income:
Unrealized investment (loss) income	(13)	6	(27)	43
Less: effect of income taxes	(4)	1	(7)	10
Other comprehensive (loss) income, net of tax	(9)	5	(20)	33
Comprehensive income	$ 134	$ 190	$ 536	$ 672