CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statements of Comprehensive Income/(loss)
Net income	$ 177	$ 311	$ 374	$ 546
Other comprehensive income (loss), net of tax:
Net unrealized gains (losses) on securities available for sale	(231)	38	(635)	(65)
Net unrealized gains (losses) on cash flow hedges	(22)	(2)	(43)	(4)
Net unrealized gains (losses) on pension and other postretirement plans	1	2	3	6
Other comprehensive income (loss)	(252)	38	(675)	(63)
Comprehensive income (loss)	(75)	349	(301)	483
Comprehensive income attributable to noncontrolling interest	3	3	6	6
Comprehensive income (loss) attributable to controlling interest	(78)	346	(307)	477
Income tax expense (benefit) of items included in other comprehensive income:
Net unrealized gains (losses) on securities available for sale	(75)	12	(206)	(20)
Net unrealized gains (losses) on cash flow hedges	(7)	0	(14)	(1)
Net unrealized gains (losses) on pension and other postretirement plans	$ 1	$ 1	$ 1	$ 2