UNITHOLDERS' CAPITAL - Additional Information (Details) - USD ($)	Aug. 09, 2018	May 17, 2018	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Class of Stock [Line Items]
Total unitholders’ capital			$ 2,699,863,000	$ 2,584,906,000	$ 2,106,895,000	$ 1,906,638,000
Non-controlling interests in consolidated subsidiaries			$ 382,879,000	$ 333,195,000
Preferred redemption price (in dollars per share)			$ 25.00
Series A Preferred Units
Class of Stock [Line Items]
Preferred dividend rate		6.625%
Preferred redemption price (in dollars per share)		$ 25.00
Sale of stock, consideration received		$ 173,700,000
Series A Preferred Units | Preferred Stock Issuance
Class of Stock [Line Items]
Number of shares issued during mergers (in shares)		7,200,000
Series B Preferred Units
Class of Stock [Line Items]
Preferred dividend rate	6.55%
Preferred redemption price (in dollars per share)	$ 25.00
Sale of stock, consideration received	$ 226,900,000
Series B Preferred Units | Preferred Stock Issuance
Class of Stock [Line Items]
Number of shares issued during mergers (in shares)	9,400,000
OCGH
Class of Stock [Line Items]
Unitholders' capital (in shares)			50,930,598	50,915,764
Non-controlling interests in consolidated subsidiaries			$ 382,879,000	$ 333,195,000
Oaktree Operating Group
Class of Stock [Line Items]
Subsidiary units outstanding (in shares)				160,114,755
Total unitholders’ capital			$ 1,154,625,000	$ 1,058,126,000
Oaktree Operating Group | Converted OCGH Units and OCGH Units
Class of Stock [Line Items]
Subsidiary units outstanding (in shares)			160,129,589
Equity Held by Third Parties
Class of Stock [Line Items]
Non-controlling interests in consolidated subsidiaries			$ 0	$ 0