DERIVATIVES AND HEDGING - Schedule of Fair Value of Derivatives Held by Consolidated Funds (Details) - Consolidated Funds - Not Designated as Hedging Instrument - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Assets
Notional	$ 812,682	$ 556,036
Fair Value	33,349	9,133
Liabilities
Notional	(298,593)	(281,450)
Fair Value	(13,385)	(22,230)
Foreign-currency forward contracts
Assets
Notional	797,475	508,174
Fair Value	17,578	475
Liabilities
Notional	(81,625)	(118,263)
Fair Value	(8,513)	(21,659)
Total-return and interest-rate and credit default swaps
Assets
Notional	15,207	41,113
Fair Value	15,771	8,658
Liabilities
Notional	(203,533)	0
Fair Value	(19)	0
Options and futures
Assets
Notional	0	6,749
Fair Value	0	0
Liabilities
Notional	(13,435)	(163,187)
Fair Value	$ (4,853)	$ (571)