Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 422	$ 622	$ 831	$ 985
Other comprehensive income (loss), net of related taxes:
Foreign currency translation, net of related taxes of $39 and $29, respectively	289	46	(410)	73
Net unrealized gains (losses) on available-for-sale securities, net of reclassification adjustment and net of related taxes	(337)	306	(143)	565
Net unrealized gains (losses) on available-for-sale securities designated in fair value hedges, net of related taxes	22	(13)	7	(23)
Other-than-temporary impairment on held-to-maturity securities related to factors other than credit, net of related taxes	3	4	7	12
Net unrealized gains (losses) on cash flow hedges, net of related taxes	8	(54)	20	(61)
Net unrealized gains (losses) on retirement plans, net of related taxes	10	12	15	18
Other comprehensive income (loss)	(5)	301	(504)	584
Total comprehensive income	$ 417	$ 923	$ 327	$ 1,569