SEGMENT REPORTING - Schedule of Reconciliation of Income Before Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Adjustments:
Depreciation and amortization expense	$ 29,200	$ 33,600
Consolidated Funds
Adjustments:
Total investment loss—realized	(257,276)	(222,938)
Operating segment
Segment Reporting, Other Significant Reconciling Item [Line Items]
Income before taxes	231,048	241,122
Adjustments:
Depreciation and amortization expense	36,644	45,659
Equity compensation expense	92,421	68,704
Acquisition-related compensation expense	5,504	642
Acquisition and merger-related expense	10,578	4,955
Placement fee adjustment	5,540	(3,232)
Other expense, net	131	91
Total performance (income) loss—unrealized	45,476	(127,713)
Total performance related compensation—unrealized	(64,514)	85,150
Investment income—unrealized	(4,287)	(28,777)
Realized income	429,048	380,909
Total performance income—realized	(23,181)	(31,136)
Total performance related compensation—realized	13,156	23,859
Total investment loss—realized	22,951	7,504
Fee related earnings	441,974	381,136
Operating segment | Consolidated Funds
Adjustments:
Income before taxes of non-controlling interests in Consolidated Funds, net of eliminations	(65,586)	(27,171)
Operating segment | Subsidiaries
Adjustments:
Income before taxes of non-controlling interests in Consolidated Funds, net of eliminations	(3,662)	(5,671)
OMG
Adjustments:
OMG expense, net	139,755	127,150
Realized income	139,892	126,617
Total performance income—realized	0	0
Total performance related compensation—realized	0	0
Fee related earnings	$ 140,304	$ 126,499