Goodwill and Other Intangible Assets - Changes In The Carrying Amount Of Other Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	$ 2,025	$ 2,360
Acquisitions	16	0
Amortization	(197)	(222)	$ (214)
Foreign currency translation and other, net	(76)	(113)
Ending balance	1,768	2,025	2,360
Investment Servicing
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	1,998	2,321
Acquisitions	16	0
Amortization	(187)	(213)
Foreign currency translation and other, net	(74)	(110)
Ending balance	1,753	1,998	2,321
Investment Management
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	27	39
Acquisitions	0	0
Amortization	(10)	(9)
Foreign currency translation and other, net	(2)	(3)
Ending balance	$ 15	$ 27	$ 39