CONSOLIDATED STATEMENT OF COMPREHENSIVE LOSS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 201	$ 339
Net change in unrealized gains (losses), net of tax:
Investment securities	(1,043)	(631)
Fair value option liabilities attributable to our own credit spread	29	(10)
Derivatives designated as cash flow hedges	(152)	(12)
Total other comprehensive loss	(1,166)	(653)
Comprehensive loss	$ (965)	$ (314)