CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 3,325	$ (1,340)
Other comprehensive income (loss), net of tax:
Net unrealized gains (losses) on securities available for sale	(1,148)	1,224
Net unrealized gains (losses) on hedging relationships	(581)	1,374
Foreign currency translation adjustments	19	(67)
Other	(1)	0
Other comprehensive income (loss), net of tax	(1,711)	2,531
Comprehensive income	$ 1,614	$ 1,191