Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 5,520	$ 5,914
Other comprehensive income/(loss), after–tax
Unrealized gains on investment securities	425	89
Translation adjustments, net of hedges	(2)	(10)
Cash flow hedges	(70)	77
Defined benefit pension and OPEB plans	25	85
Debit valuation adjustment (“DVA”) on fair value option elected liabilities	58
Total other comprehensive income, after–tax	436	241
Comprehensive income	$ 5,956	$ 6,155