Goodwill And Other Intangible Assets (Changes In The Carrying Amount Of Other Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	$ 2,459		$ 2,593
Acquisitions(1)	257	[1]	96	[1]
Amortization	(198)		(200)		(179)
Foreign currency translation, net	21		(30)
Ending balance	2,539		2,459		2,593
Investment Servicing
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	2,408		2,559
Acquisitions(1)	257	[1]	67	[1]
Amortization	(193)		(189)
Foreign currency translation, net	20		(29)
Ending balance	2,492		2,408
Investment Management
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	51		34
Acquisitions(1)	0	[1]	29	[1]
Amortization	(5)		(11)
Foreign currency translation, net	1		(1)
Ending balance	$ 47		$ 51

[1] Amount for 2012 represented the acquisition of GSAS, more fully discussed in note 2. Amounts for 2011 represented acquisitions of Complementa, Pulse Trading and BIAM.