Goodwill and Intangible Assets - Goodwill by Business Segment (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Goodwill [Roll Forward]
Beginning Balance		$ 17,618	$ 17,869
Acquisitions			10
Foreign currency translation		(14)	(216)
Ending Balance		17,604	17,663
Investment Management
Goodwill [Roll Forward]
Beginning Balance		9,207	9,328	[1]
Acquisitions	[1]		10
Foreign currency translation		(32)	(106)	[1]
Ending Balance		9,175	9,232	[1]
Investment Services
Goodwill [Roll Forward]
Beginning Balance	[2]	8,366	8,471
Acquisitions	[2]		0
Foreign currency translation	[2]	18	(107)
Ending Balance	[2]	8,384	8,364
Other
Goodwill [Roll Forward]
Beginning Balance	[2]	45	70	[1]
Acquisitions	[1],[2]		0
Foreign currency translation	[2]	0	(3)	[1]
Ending Balance	[2]	$ 45	$ 67	[1]

[1] Includes the reclassification of goodwill associated with Meriten Investment Management GmbH from Investment Management to the Other segment.

[2] Includes the reclassification of goodwill associated with credit-related activities from the Other segment to Investment Services.