Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 147	$ 116	$ 296	$ 161
Other comprehensive income, net of tax
Investment securities	(2)	21	(17)	55
Derivatives and hedging activities	(7)	(6)	15	(10)
Other comprehensive income, net of tax	(9)	15	(2)	45
Comprehensive income	$ 138	$ 131	$ 294	$ 206