UNITHOLDERS' CAPITAL - Additional Information (Details) - USD ($)			3 Months Ended
	Aug. 09, 2018	May 17, 2018	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Total unitholders’ capital			$ 2,240,278,000	$ 2,272,602,000	$ 2,183,874,000	$ 1,879,988,000
Non-controlling interests in consolidated subsidiaries			$ 538,305,000	$ 612,228,000
Preferred redemption price (in dollars per share)			$ 25.00
Preferred redemption notice period			30 days
Preferred redemption period, change in control event			60 days
Preferred redemption price, change in control event (in dollars per share)			$ 25.25
Redemption period after tax redemption event			60 days
Preferred redemption price, tax redemption event (in dollars per share)			$ 25.50
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)			60,779,066	60,783,255
Non-controlling interests in consolidated subsidiaries			$ 538,305,000	$ 612,228,000
Oaktree Operating Group
Class of Stock [Line Items]
Subsidiary units outstanding (in shares)				159,919,875
Total unitholders’ capital			$ 1,408,530,000	$ 1,565,119,000
Oaktree Operating Group | Converted OCGH Units and OCGH Units
Class of Stock [Line Items]
Subsidiary units outstanding (in shares)			159,915,686
Equity Held by Third Parties
Class of Stock [Line Items]
Non-controlling interests in consolidated subsidiaries			$ 0	$ 0