Consolidated Statement 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	$ 27,430	$ 28,147	$ 18,232
Other comprehensive income (loss), net-of-tax:
Net change in debt securities	5,875	(3,953)	61
Net change in debit valuation adjustments	(963)	749	(293)
Net change in derivatives	616	(53)
Net change in derivatives			64
Employee benefit plan adjustments	136	(405)	288
Net change in foreign currency translation adjustments	(86)	(254)	86
Other comprehensive income (loss)	5,578	(3,916)	206
Comprehensive income	$ 33,008	$ 24,231	$ 18,438

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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