SEGMENT REPORTING - Schedule of Reconciliation of Segment Results to the Company's Income before Taxes and Total Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Adjustments:
Depreciation and amortization expense	$ 28,900	$ 31,000	$ 87,100	$ 95,000
Consolidated Funds
Adjustments:
Total investment loss—realized	(234,681)	(255,600)	(732,316)	(712,992)
Operating segment
Segment Reporting, Other Significant Reconciling Item [Line Items]
Income before taxes	327,106	226,872	875,479	849,963
Adjustments:
Depreciation and amortization expense	46,005	105,524	118,900	194,174
Equity compensation expense	85,612	61,976	266,267	192,964
Acquisition-related compensation expense	5,435	589	16,374	1,831
Acquisition and merger-related expense	25,166	2,414	39,394	10,126
Placement fee adjustment	(4,485)	944	825	(6,032)
Other (income) expense, net	3,389	286	(7,910)	589
Total performance (income) loss—unrealized	(263,553)	31,400	(95,759)	(384,533)
Total performance related compensation—unrealized	180,174	(38,650)	8,478	261,996
Investment (income) loss—unrealized	10,308	(36,966)	28,929	(105,372)
Realized income	491,378	401,452	1,429,849	1,221,884
Total performance income—realized	(22,108)	(17,797)	(154,931)	(189,568)
Total performance related compensation—realized	13,234	10,504	95,386	133,472
Total investment loss—realized	9,790	17,163	35,280	20,446
Fee related earnings	492,294	411,322	1,405,584	1,186,234
Operating segment | Consolidated Funds
Adjustments:
Income before taxes of non-controlling interests in Consolidated Funds, net of eliminations	(65,998)	(84,429)	(242,065)	(179,362)
Operating segment | Subsidiaries
Adjustments:
Income before taxes of non-controlling interests in Consolidated Funds, net of eliminations	(10,544)	(5,007)	(18,148)	(6,892)
OMG
Adjustments:
OMG expense, net	152,763	136,499	439,085	392,432
Realized income	152,622	136,999	438,779	390,929
Total performance income—realized	0	0	0	0
Total performance related compensation—realized	0	0	0	0
Fee related earnings	$ 152,983	$ 137,090	$ 440,087	$ 391,219