Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 32,474	$ 24,441	$ 24,733
Other comprehensive income/(loss), after–tax
Unrealized gains/(losses) on investment securities	(1,858)	640	(1,105)
Translation adjustments, net of hedges	20	(306)	(2)
Fair value hedges	(107)
Cash flow hedges	(201)
Cash flow hedges		176	(56)
Defined benefit pension and OPEB plans	(373)	738	(28)
DVA on fair value option elected liabilities	1,043	(192)	(330)
Total other comprehensive income/(loss), after–tax	(1,476)	1,056	(1,521)
Comprehensive income	$ 30,998	$ 25,497	$ 23,212

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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