Goodwill And Other Intangible Assets (Changes In The Carrying Amount Of Other Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Goodwill [Line Items]
Beginning balance	$ 2,459	$ 2,593
Acquisitions	0	27
Amortization	(51)	(49)
Foreign currency translation, net	35	71
Other	0	2
Ending balance	2,443	2,644
Investment Servicing [Member]
Goodwill [Line Items]
Beginning balance	2,408	2,559
Acquisitions	0	0
Amortization	(49)	(46)
Foreign currency translation, net	34	70
Other	0	0
Ending balance	2,393	2,583
Investment Management [Member]
Goodwill [Line Items]
Beginning balance	51	34
Acquisitions	0	27
Amortization	(2)	(3)
Foreign currency translation, net	1	1
Other	0	2
Ending balance	$ 50	$ 61