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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (1,340)	$ 1,412
Other comprehensive income, net of tax:
Net unrealized gains on securities available for sale	1,224	292
Net unrealized gains on hedging relationships	1,374	277
Foreign currency translation adjustments	(67)	30
Net changes in securities held to maturity	0	6
Other	0	(2)
Other comprehensive income, net of tax	2,531	603
Comprehensive income	$ 1,191	$ 2,015

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