Non-U.S. Activities (Schedule Of Results From Non-U.S. Operations) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting Information [Line Items]
Total fee revenue	$ 1,971	$ 1,778	$ 3,828	$ 3,563
Net interest revenue	596	672	1,172	1,297
Gains (Losses) related to investment securities, net	(7)	(27)	(5)	(16)
Total revenue	2,560	2,423	4,995	4,844
Expenses	1,798	1,772	3,624	3,607
Income before income tax expense	762	652	1,371	1,238
Income tax expense	183	162	328	321
Net income	579	490	1,043	917
Non- U.S. [Member]
Segment Reporting Information [Line Items]
Total fee revenue	811	731	1,576	1,469
Net interest revenue	295	241	568	469
Gains (Losses) related to investment securities, net	(7)	(35)	(10)	(32)
Total revenue	1,099	937	2,134	1,906
Expenses	740	752	1,493	1,518
Income before income tax expense	359	185	641	388
Income tax expense	85	49	154	96
Net income	$ 274	$ 136	$ 487	$ 292