Goodwill And Other Intangible Assets (Changes In The Carrying Amount Of Other Intangible Assets) (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
Goodwill [Line Items]
Beginning balance			$ 2,459	$ 2,593
Acquisitions			0	27
Amortization	(48)	(50)	(99)	(99)
Foreign currency translation, net			(26)	93
Other	0	2	0	2
Ending balance	2,334	2,616	2,334	2,616
Investment Servicing [Member]
Goodwill [Line Items]
Beginning balance			2,408	2,559
Acquisitions			0	0
Amortization			(96)	(95)
Foreign currency translation, net			(25)	92
Other	0	0	0	0
Ending balance	2,287	2,556	2,287	2,556
Investment Management [Member]
Goodwill [Line Items]
Beginning balance			51	34
Acquisitions			0	27
Amortization			(3)	(4)
Foreign currency translation, net			(1)	1
Other	0	2	0	2
Ending balance	$ 47	$ 60	$ 47	$ 60