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DEBT OBLIGATIONS AND CREDIT FACILITIES - Debt Obligations (Details)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Mar. 30, 2022 EUR (€)
Debt Instrument [Line Items]
Total remaining principal	$ 218,260,000	$ 213,450,000
Senior secured notes
Debt Instrument [Line Items]
Less: Debt issuance costs	(1,220,000)	(1,255,000)
Total debt obligations, net	217,040,000	212,195,000
Senior secured notes \| €50,000, 2.20%, issued in June 2022, payable on June 8, 2032
Debt Instrument [Line Items]
Face amount \| €			€ 50,000,000
Stated percentage			2.20%
Total remaining principal	54,566,000	53,362,000
Senior secured notes \| €75,000, 2.40%, issued in June 2022, payable on June 8, 2034
Debt Instrument [Line Items]
Face amount \| €			€ 75,000,000
Stated percentage			2.40%
Total remaining principal	81,847,000	80,044,000
Senior secured notes \| €75,000, 2.58%, issued in June 2022, payable on June 8, 2037
Debt Instrument [Line Items]
Face amount \| €			€ 75,000,000
Stated percentage			2.58%
Total remaining principal	81,847,000	80,044,000
Oaktree Capital Group Excluding Consolidated Funds
Debt Instrument [Line Items]
Total remaining principal	1,050,000,000	1,050,000,000
Total debt obligations, net	217,040,000	212,195,000
Oaktree Capital Group Excluding Consolidated Funds \| Senior secured notes \| $50,000, 3.91%, issued in September 2014, payable on September 3, 2024
Debt Instrument [Line Items]
Face amount	$ 50,000
Stated percentage	3.91%
Total remaining principal	$ 50,000,000	50,000,000
Oaktree Capital Group Excluding Consolidated Funds \| Senior secured notes \| $100,000, 4.01%, issued in September 2014, payable on September 3, 2026
Debt Instrument [Line Items]
Face amount	$ 100,000
Stated percentage	4.01%
Total remaining principal	$ 100,000,000	100,000,000
Oaktree Capital Group Excluding Consolidated Funds \| Senior secured notes \| $100,000, 4.21%, issued in September 2014, payable on September 3, 2029
Debt Instrument [Line Items]
Face amount	$ 100,000
Stated percentage	4.21%
Total remaining principal	$ 100,000,000	100,000,000
Oaktree Capital Group Excluding Consolidated Funds \| Senior secured notes \| $100,000, 3.69%, issued in July 2016, payable on July 12, 2031
Debt Instrument [Line Items]
Face amount	$ 100,000
Stated percentage	3.69%
Total remaining principal	$ 100,000,000	100,000,000
Oaktree Capital Group Excluding Consolidated Funds \| Senior secured notes \| $250,000, 3.78%, issued in December 2017, payable on December 18, 2032
Debt Instrument [Line Items]
Face amount	$ 250,000
Stated percentage	3.78%
Total remaining principal	$ 250,000,000	250,000,000
Oaktree Capital Group Excluding Consolidated Funds \| Senior secured notes \| $200,000, 3.64%, issued in July 2020, payable on July 22, 2030
Debt Instrument [Line Items]
Face amount	$ 200,000
Stated percentage	3.64%
Total remaining principal	$ 200,000,000	200,000,000
Oaktree Capital Group Excluding Consolidated Funds \| Senior secured notes \| $50,000, 3.84%, issued in July 2020, payable on July 22, 2035
Debt Instrument [Line Items]
Face amount	$ 50,000
Stated percentage	3.84%
Total remaining principal	$ 50,000,000	50,000,000
Oaktree Capital Group Excluding Consolidated Funds \| Senior secured notes \| $200,000, 3.06%, issued in November 2021, payable on January 12, 2037
Debt Instrument [Line Items]
Face amount	$ 200,000
Stated percentage	3.06%
Total remaining principal	$ 200,000,000	$ 200,000,000