Non-U.S. Activities (Schedule Of Results From Non-U.S. Operations) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Segment Reporting Information [Line Items]
Total fee revenue	$ 1,857	$ 1,785
Net interest revenue	576	625
Losses related to investment securities, net	2	11
Total revenue	2,435	2,421
Expenses	1,826	1,835
Income before income tax expense	609	586
Income tax expense	145	159
Net income	464	427
Non- U.S. [Member]
Segment Reporting Information [Line Items]
Total fee revenue	765	738
Net interest revenue	273	227
Losses related to investment securities, net	(3)	3
Total revenue	1,035	968
Expenses	753	766
Income before income tax expense	282	202
Income tax expense	69	47
Net income	$ 213	$ 155