Non-U.S. Activities - Schedule Of Results From Non-U.S. Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Segment Reporting Information [Line Items]
Total fee revenue	$ 2,060	$ 1,924
Net interest revenue	546	555
Gains (losses) related to investment securities, net	(1)	6
Total revenue	2,605	2,485
Expenses	2,097	2,028
Income before income tax expense	504	455
Income tax expense	95	92
Net income	409	363
Non- U.S.
Segment Reporting Information [Line Items]
Total fee revenue	857	788
Net interest revenue	291	312
Gains (losses) related to investment securities, net	(1)	6
Total revenue	1,147	1,106
Expenses	805	852
Income before income tax expense	342	254
Income tax expense	78	61
Net income	$ 264	$ 193