Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 6,804	$ 5,565	$ 19,008	$ 16,814
Other comprehensive income/(loss), after–tax
Unrealized gains/(losses) on investment securities	(291)	(141)	(1,621)	1,928
Translation adjustments, net of hedges	(5)	3	(12)	13
Cash flow hedges	(106)	(58)	51	69
Defined benefit pension and OPEB plans	51	24	144	57
Total other comprehensive income, after–tax	(351)	(172)	(1,438)	2,067
Comprehensive income	$ 6,453	$ 5,393	$ 17,570	$ 18,881