UNITHOLDERS' CAPITAL - Additional Information (Details) - USD ($)			12 Months Ended
	Aug. 09, 2018	May 17, 2018	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Class of Stock
Total capital			$ 2,272,602,000	$ 1,879,988,000	$ 1,702,169,000	$ 2,487,717,000
Preferred redemption price (in dollars per share)			$ 25.00
Redemption notice period			30 days
Redemption notice period after change in control event			60 days
Preferred redemption price, change of control event (in dollars per share)			$ 25.25
Redemption period after tax redemption			60 days
Preferred redemption price, tax redemption event (in dollars per share)			$ 25.50
Series A Preferred Units
Class of Stock
Preferred dividend rate		6.625%
Preferred redemption price (in dollars per share)		$ 25.00
Net proceeds from units sold		$ 173,700,000
Series A Preferred Units | Preferred Unit Issuance
Class of Stock
Number of units issued and sold (in shares)		7,200,000
Series B Preferred Units
Class of Stock
Preferred dividend rate	6.55%
Preferred redemption price (in dollars per share)	$ 25.00
Net proceeds from units sold	$ 226,900,000
Series B Preferred Units | Preferred Unit Issuance
Class of Stock
Number of units issued and sold (in shares)	9,400,000
OCGH
Class of Stock
Unitholders' capital (in shares)			60,783,255	61,370,607
Non-controlling interests in consolidated funds			$ 612,228,000	$ 544,935,000
Oaktree Operating Group
Class of Stock
Subsidiary units outstanding (in shares)				160,047,647
Total capital			$ 1,565,119,000	$ 1,421,127,000
Oaktree Operating Group | Converted OCGH Units and OCGH Units
Class of Stock
Subsidiary units outstanding (in shares)			159,919,875
Equity Held by Third Parties
Class of Stock
Non-controlling interests in consolidated subsidiaries			$ 0	$ 0