Condensed Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Statement of Comprehensive Income [Abstract]
Net loss	$ (36)	$ (280)	$ (206)	$ (930)
Other comprehensive (loss) income, net of tax:
Debt securities available for sale	50	206	159	113
Pension and post-retirement obligations	1	1	2	1
Cash flow hedges	(4)	(14)	(16)	64
Total other comprehensive (loss) income, net of tax	47	193	145	178
Total comprehensive (loss) income, net of tax	$ 11	$ (87)	$ (61)	$ (752)