CONSOLIDATION - Variable Interest Entities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Variable Interest Entity [Line Items]
Assets of consolidated VIEs	$ 24,192,557		$ 24,192,557		$ 24,730,500
Liabilities of consolidated VIEs	18,435,543		18,435,543		19,709,151
Collateralized loan obligations
Variable Interest Entity [Line Items]
Maximum exposure to loss attributable to the company's investment in VIEs	95,000		95,000		83,100
Non-Consolidated Variable Interest Entities
Variable Interest Entity [Line Items]
Maximum exposure to loss attributable to the company's investment in VIEs	397,841		397,841		503,376
Consolidated VIEs
Variable Interest Entity [Line Items]
Maximum exposure to loss attributable to the company's investment in VIEs	781,921		781,921		910,600
Consolidated VIEs | Consolidated Funds
Variable Interest Entity [Line Items]
Assets of consolidated VIEs	15,207,028		15,207,028		15,484,962
Liabilities of consolidated VIEs	12,572,337		12,572,337		$ 13,409,257
Net income attributable to non-controlling interests related to consolidated VIEs	$ 100,969	$ 63,461	$ 159,325	$ 100,592