Consolidated Statement of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 560	$ 540	$ 1,545	$ 1,583
Other comprehensive income (loss), net of related taxes:
Foreign currency translation, net of related taxes	(591)	326	(518)	23
Net unrealized gains (losses) on available-for-sale securities, net of reclassification adjustment and net of related taxes	(140)	111	425	(642)
Net unrealized gains (losses) on available-for-sale securities designated in fair value hedges, net of related taxes	14	1	(9)	61
Other-than-temporary impairment on held-to-maturity securities related to factors other than credit, net of related taxes	4	3	16	14
Net unrealized gains (losses) on cash flow hedges, net of related taxes	117	(33)	56	61
Net unrealized gains (losses) on retirement plans, net of related taxes	0	1	18	9
Other comprehensive income (loss)	(596)	409	(12)	(474)
Total comprehensive income	$ (36)	$ 949	$ 1,533	$ 1,109