NON-CONTROLLING REDEEMABLE INTERESTS IN CONSOLIDATED FUNDS (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Non-Controlling Redeemable Interests in Consolidated Funds [Roll Forward]
Beginning balance	$ 866,222	$ 961,622
Fund consolidation and deconsolidation, net	(720,729)	(369,639)
Contributions	864,281	519,684
Distributions	(217,804)	(107,071)
Net income	(174,244)	82,234
Change in distributions payable	(47)	4,652
Change in contribution receivable	15,826	0
Foreign currency translation and other	11,375	(10,020)
Ending balance	$ 644,880	$ 1,081,462