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, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Segment Reporting Information [Line Items]
Total fee revenue	$ 1,778		$ 1,892		$ 3,563		$ 3,683
Net interest revenue	672		572		1,297		1,149
Gains (Losses) related to investment securities, net	(27)		27		(16)		20
Total revenue	2,423		2,491		4,844		4,852
Expenses	1,772		1,774		3,607		3,476
Income before income tax expense	652		715		1,238		1,375
Income tax expense	162		202		321		391
Net income	490		513		917		984
Available-for-sale Securities, Gross Realized Losses	46	[1]	0	[1]	46	[1]	0	[1]
Non- U.S. [Member]
Segment Reporting Information [Line Items]
Total fee revenue	731		793		1,469		1,536
Net interest revenue	242		244		474		464
Gains (Losses) related to investment securities, net	(35)		(3)		(32)		(9)
Total revenue	938		1,034		1,911		1,991
Expenses	768		862		1,557		1,630
Income before income tax expense	170		172		354		361
Income tax expense	42		44		88		92
Net income	128		128		266		269
United Kingdom [Member]
Segment Reporting Information [Line Items]
Total revenue	$ 278				$ 508

[1] Loss 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.