INVESTMENTS - Corporate Investments (Details) - Oaktree Capital Group Excluding Consolidated Funds - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Schedule of Equity Method Investments [Line Items]
Other investments, at fair value	$ 85,127	$ 85,319
Total corporate investments	1,438,991	1,532,208
Funds
Schedule of Equity Method Investments [Line Items]
Equity-method investments:	1,342,340	1,434,988
Companies
Schedule of Equity Method Investments [Line Items]
Equity-method investments:	$ 11,524	$ 11,901