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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 5,546	$ 6,015	$ 1,982
After Tax
Net unrealized gains (losses) on securities available for sale	650	(459)	21
Net changes in securities held to maturity	26	447	97
Net unrealized gains (losses) on hedging relationships	772	(74)	(203)
Foreign currency translation adjustments	70	(39)	84
Other	13	(11)	24
Other comprehensive income (loss), net of tax	1,531	(136)	23
Comprehensive income	$ 7,077	$ 5,879	$ 2,005

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