Goodwill and Other Intangible Assets - Changes In The Carrying Amount Of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Roll Forward]
Beginning balance	$ 5,826	$ 6,036
Foreign currency translation	(155)	(210)
Ending balance	5,671	5,826
Investment Servicing
Goodwill [Roll Forward]
Beginning balance	5,793	5,999
Foreign currency translation	(152)	(206)
Ending balance	5,641	5,793
Investment Management
Goodwill [Roll Forward]
Beginning balance	33	37
Foreign currency translation	(3)	(4)
Ending balance	$ 30	$ 33