UNITHOLDERS' CAPITAL - Summary of Net Income (Loss) (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Weighted average Oaktree Capital I units outstanding (in thousands):
Total weighted average units outstanding, diluted (in shares)	160,116	159,907	160,089	159,911
Oaktree Capital I net income (loss):
Oaktree Capital I net income (loss)	$ 47,110	$ (59,771)	$ 140,302	$ 53,852
Net income (loss) attributable to OCG Class A unitholders:
Oaktree Capital I net income (loss) attributable to OCG Class A unitholders	(22,874)	(17,812)	8,515	(25,661)
Non-Operating Group income (expense)	16,539	(3,544)	24,079	15,158
Net income (loss) attributable to Oaktree Capital Group, LLC Class A unitholders	$ (6,335)	$ (21,356)	$ 32,594	$ (10,503)
Oaktree Operating Group
Weighted average Oaktree Capital I units outstanding (in thousands):
Total weighted average units outstanding, basic (in shares)	160,116	159,907	160,089	159,911
Oaktree Capital I net income (loss):
Oaktree Capital I net income (loss)	$ (30,000)	$ (24,134)	$ 27,918	$ (28,156)
OCGH Units | Oaktree Operating Group
Weighted average Oaktree Capital I units outstanding (in thousands):
Total weighted average units outstanding, basic (in shares)	55,107	60,676	57,950	60,727
Total weighted average units outstanding, diluted (in shares)	55,107	60,676	57,950	60,727
Oaktree Capital I net income (loss):
Oaktree Capital I net income (loss)	$ (13,955)	$ (13,151)	$ 5,745	$ (16,153)
Class A Units
Weighted average Oaktree Capital I units outstanding (in thousands):
Total weighted average units outstanding, basic (in shares)	108,796	102,820	105,954	100,989
Total weighted average units outstanding, diluted (in shares)	108,796	102,820	105,954	100,989
Net income (loss) attributable to OCG Class A unitholders:
Net income (loss) attributable to Oaktree Capital Group, LLC Class A unitholders	$ (6,335)	$ (21,356)	$ 32,594	$ (10,503)
Class A Units | Oaktree Operating Group
Weighted average Oaktree Capital I units outstanding (in thousands):
Total weighted average units outstanding, basic (in shares)	105,009	99,231	102,139	99,184
Total weighted average units outstanding, diluted (in shares)	105,009	99,231	102,139	99,184
Oaktree Capital I net income (loss):
Oaktree Capital I net income (loss)	$ (22,874)	$ (17,812)	$ 8,515	$ (25,661)
Series A Preferred Units | Oaktree Operating Group
Oaktree Capital I net income (loss):
Oaktree Capital I net income (loss)	$ 6,829	$ 6,829	$ 13,658	$ 13,658