NON-CONTROLLING REDEEMABLE INTERESTS IN CONSOLIDATED FUNDS - Summary of Changes in Non-controlling Redeemable Interests in Consolidated Funds (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Non-Controlling Redeemable Interests in Consolidated Funds [Roll Forward]
Beginning balance	$ 38,173,125	$ 41,681,155
Cumulative-effect adjustment from adoption of accounting guidance	(37,969,042)	0
Contributions	64,321	3,309,316
Distributions	(21,919)	(3,711,727)
Net income	1,989	742,608
Change in distributions payable	(822)	544,060
Change in accrued or deferred contributions	0	12,267
Foreign currency translation and other	1,605	(364,239)
Ending balance	$ 249,257	$ 42,213,440