Goodwill and Other Intangible Assets - Changes In The Carrying Amount Of Other Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			$ 2,025	$ 2,360
Amortization	$ (48)	$ (54)	(147)	(162)
Foreign currency translation and other, net			(58)	(77)
Ending balance	1,820	2,121	1,820	2,121
Investment Servicing
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			1,998	2,321
Amortization			(141)	(155)
Foreign currency translation and other, net			(56)	(75)
Ending balance	1,801	2,091	1,801	2,091
Investment Management
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			27	39
Amortization			(6)	(7)
Foreign currency translation and other, net			(2)	(2)
Ending balance	$ 19	$ 30	$ 19	$ 30