Goodwill and Other Intangible Assets - Changes In The Carrying Amount Of Goodwill (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Goodwill [Roll Forward]
Beginning balance	$ 5,826	$ 6,036
Foreign currency translation	(97)	1
Ending balance	5,729	6,037
Investment Servicing
Goodwill [Roll Forward]
Beginning balance	5,793	5,999
Foreign currency translation	(95)	1
Ending balance	5,698	6,000
Investment Management
Goodwill [Roll Forward]
Beginning balance	33	37
Foreign currency translation	(2)	0
Ending balance	$ 31	$ 37