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
Statements of Comprehensive Income/(loss)
Net income	$ 311	$ 57	$ 546	$ 73
Other comprehensive income (loss), net of tax:
Net unrealized gains (losses) on securities available for sale	38	(1)	(65)	87
Net unrealized gains (losses) on cash flow hedges	(2)	0	(4)	13
Net unrealized gains (losses) on pension and other postretirement plans	2	2	6	5
Other comprehensive income (loss)	38	1	(63)	105
Comprehensive income (loss)	349	58	483	178
Comprehensive income attributable to noncontrolling interest	3	3	6	6
Comprehensive income attributable to controlling interest	346	55	477	172
Income tax expense (benefit) of items included in other comprehensive income:
Net unrealized gains (losses) on securities available for sale	12	0	(20)	28
Net unrealized gains (losses) on cash flow hedges	0	0	(1)	4
Net unrealized gains (losses) on pension and other postretirement plans	$ 1	$ 1	$ 2	$ 1