CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Tax expense (benefit) of unrealized gains/losses on cash flow hedges from AOCI	$ 0	$ 0	$ (1)	$ (2)
Tax expense (benefit) of unrealized gains/losses on available for sale securities still held	(6)	(8)	(7)	(31)
Tax expense (benefit) of other comprehensive income (loss), reclassification adjustment from AOCI for sale of securities	(1)	(1)	(3)	(1)
Tax expense (benefit) of defined benefit pension and other benefits plans reclassified from AOCI to net income	0	0	0	0
Tax expense (benefit) of other comprehensive income (loss) related to equity method investees	$ 0	$ 0	$ 0	$ 0