UNITHOLDERS' CAPITAL - Summary of Net Income (Loss) (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Weighted average Oaktree Operating Group units outstanding (in thousands):
Total weighted average units outstanding, basic (in shares)	99,238	99,137
Total weighted average units outstanding, diluted (in shares)	99,238	99,137
Oaktree Operating Group net income (loss):
Oaktree Operating Group net income (loss)	$ 93,192	$ 113,623
Net income (loss) attributable to OCG Class A unitholders:
Oaktree Operating Group net income (loss) attributable to OCG Class A unitholders	31,389	(7,849)
Non-Operating Group income (expense)	7,540	18,702
Net income attributable to OCG Class A unitholders	$ 38,929	$ 10,853
Oaktree Operating Group
Weighted average Oaktree Operating Group units outstanding (in thousands):
Total weighted average units outstanding, basic (in shares)	160,062	159,916
Total weighted average units outstanding, diluted (in shares)	160,062	159,916
Oaktree Operating Group net income (loss):
Oaktree Operating Group net income (loss)	$ 57,918	$ (4,022)
Series A Preferred Units | Oaktree Operating Group
Oaktree Operating Group net income (loss):
Oaktree Operating Group net income (loss)	$ 6,829	$ 6,829
OCGH Units | Oaktree Operating Group
Weighted average Oaktree Operating Group units outstanding (in thousands):
Total weighted average units outstanding, basic (in shares)	60,824	60,779
Total weighted average units outstanding, diluted (in shares)	60,824	60,779
Oaktree Operating Group net income (loss):
Oaktree Operating Group net income (loss)	$ 19,700	$ (3,002)
Class A Units
Weighted average Oaktree Operating Group units outstanding (in thousands):
Total weighted average units outstanding, basic (in shares)	99,238	99,137
Total weighted average units outstanding, diluted (in shares)	99,238	99,137
Net income (loss) attributable to OCG Class A unitholders:
Net income attributable to OCG Class A unitholders	$ 38,929	$ 10,853
Class A Units | Oaktree Operating Group
Weighted average Oaktree Operating Group units outstanding (in thousands):
Total weighted average units outstanding, basic (in shares)	99,238	99,137
Total weighted average units outstanding, diluted (in shares)	99,238	99,137
Oaktree Operating Group net income (loss):
Oaktree Operating Group net income (loss)	$ 31,389	$ (7,849)