CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 51	$ 603	$ 695	$ 840
Other comprehensive income (loss), net of tax:
Net unrealized gains (losses) on securities	(424)	(321)	(1,394)	(519)
Total other comprehensive income (loss), net of tax	(424)	(321)	(1,394)	(519)
Total comprehensive income	$ (373)	$ 282	$ (699)	$ 321