Non-U.S. Activities (Schedule Of Results From Non-U.S. Operations) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Segment Reporting Information [Line Items]
Total fee revenue	$ 7,088		$ 7,194		$ 6,540
Net interest revenue	2,538		2,333		2,699
Losses related to investment securities, net	23		67		(286)
Total revenue	9,649		9,594		8,953
Expenses	6,886		7,058		6,842
Income before income tax expense	2,766		2,536		2,086
Income tax expense	705		616		530
Net income	2,061		1,920		1,556
Gross realized losses from sales of available-for-sale securities	46	[1],[2]	12	[1],[2]	1,385	[1],[2]
Non- U.S. [Member]
Segment Reporting Information [Line Items]
Total fee revenue	2,917		3,004		2,661
Net interest revenue	953		966		725
Losses related to investment securities, net	(40)		(25)		449
Total revenue	3,830		3,945		3,835
Expenses	3,118		3,215		2,719
Income before income tax expense	712		730		1,116
Income tax expense	187		192		305
Net income	525		538		811
United Kingdom [Member]
Segment Reporting Information [Line Items]
Total revenue					1,160
Greece
Segment Reporting Information [Line Items]
Gross realized losses from sales of available-for-sale securities	$ 46

[1] Amount for the year ended December 31, 2012 represented a loss that resulted from the sale of all of our Greek securities, which were previously classified as held to maturity. The sale was undertaken as a result of the effect of significant deterioration in the creditworthiness of the underlying collateral, including significant downgrades of the securities' published credit ratings.

[2] Amount for the year ended December 31, 2010 included a pre-tax net loss of approximately $344 million that resulted from a repositioning of our investment securities portfolio. In connection with the repositioning, which we undertook to enhance our regulatory capital ratios under evolving regulatory capital standards, increase our balance sheet flexibility in deploying our capital and reduce our exposure to certain asset classes, we sold approximately $11 billion of securities. The sale included approximately $4.8 billion of securities classified as held to maturity in our consolidated statement of condition, which was sold at a net pre-tax loss of $119 million, in response to changes in regulatory capital requirements and previous downgrades of the securities.