CONSOLIDATION - Variable Interest Entities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Variable Interest Entity [Line Items]
Assets of consolidated VIEs	$ 21,928,582		$ 22,002,839
Liabilities of consolidated VIEs	17,342,469		17,097,810
Collateralized loan obligations
Variable Interest Entity [Line Items]
Maximum exposure to loss attributable to the company's investment in VIEs	81,000		82,000
Consolidated Funds
Variable Interest Entity [Line Items]
Net income attributable to non-controlling interests related to consolidated VIEs	26,693	$ 47,382
Non-Consolidated Variable Interest Entities
Variable Interest Entity [Line Items]
Maximum exposure to loss attributable to the company's investment in VIEs	370,402		393,549
Consolidated VIEs
Variable Interest Entity [Line Items]
Maximum exposure to loss attributable to the company's investment in VIEs	552,278		537,239
Consolidated VIEs | Consolidated Funds
Variable Interest Entity [Line Items]
Assets of consolidated VIEs	13,781,266		13,128,088
Liabilities of consolidated VIEs	12,108,023		$ 11,593,867
Net income attributable to non-controlling interests related to consolidated VIEs	$ 37,131	$ 38,462