Consolidated Statement of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]
Net income	$ 2,136	$ 2,061	$ 1,920
Other comprehensive income (loss), net of related taxes:
Foreign currency translation, net of related taxes of $(20), $45 and $68, respectively	95	134	(216)
Change in net unrealized losses on available-for-sale securities, net of reclassification adjustment and net of related taxes of $(521), $469 and $242, respectively	(826)	798	328
Change in net unrealized gains (losses) on available-for-sale securities designated in fair value hedges, net of related taxes of $56, $17 and $(49), respectively	86	27	(75)
Other-than-temporary impairment on held-to-maturity securities related to factors other than credit, net of related taxes of $11, $13 and $15, respectively	18	21	25
Change in net unrealized losses on cash flow hedges, net of related taxes of $62, $52 and $3, respectively	92	74	6
Change in net unrealized losses on retirement plans, net of related taxes of $71, $(36) and $(15), respectively	80	(35)	(38)
Other comprehensive income (loss)	(455)	1,019	30
Total comprehensive income	$ 1,681	$ 3,080	$ 1,950