CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statements of Comprehensive Income/(loss)
Net income	$ 142	$ 268	$ 727	$ 642
Other comprehensive income (loss), net of tax:
Net unrealized gains (losses) on securities available for sale	(206)	(368)	(197)	(1,003)
Net unrealized gains (losses) on cash flow hedges	(20)	(99)	(22)	(142)
Net unrealized gains (losses) on pension and other postretirement plans	3	3	5	6
Other comprehensive income (loss)	(223)	(464)	(214)	(1,139)
Comprehensive income (loss)	(81)	(196)	513	(497)
Comprehensive income attributable to noncontrolling interest	5	3	14	8
Comprehensive income (loss) attributable to controlling interest	(86)	(199)	499	(505)
Income tax expense (benefit) of items included in other comprehensive income:
Net unrealized gains (losses) on securities available for sale	(67)	(119)	(65)	(324)
Net unrealized gains (losses) on cash flow hedges	(6)	(32)	(7)	(46)
Net unrealized gains (losses) on pension and other postretirement plans	$ 1	$ 1	$ 2	$ 2