Non-Interest Revenue and Expense Detail (Details 3) (USD $)	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Jun. 30, 2014	Sep. 30, 2014	Sep. 30, 2013
Details Of Certain Statements Of Income Lines Details [Abstract]
Professional services	$ 731,000,000	$ 793,000,000		$ 2,240,000,000	$ 2,272,000,000
Occupancy and equipment	432,000,000	462,000,000		1,361,000,000	1,394,000,000
Card-Related Fraud Losses	96,000,000	73,000,000		282,000,000	229,000,000
Communications	91,000,000	94,000,000		285,000,000	282,000,000
Gain on business travel joint venture transaction	(15,000,000)	0	(626,000,000)	(641,000,000)	0
Other net expenses	261,000,000	269,000,000		866,000,000	734,000,000
Total other, net expense	$ 1,596,000,000	$ 1,691,000,000		$ 4,393,000,000	$ 4,911,000,000