RELATED-PARTY TRANSACTIONS - Additional Information (Details) - Oaktree Capital Group Excluding Consolidated Funds - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest income	$ 94	$ 208	$ 369	$ 658
Level III
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Due to affiliates	171,749		171,749		$ 164,335
Affiliates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Management fees and incentive income	$ 206,000	$ 261,300	$ 1,070,900	$ 743,700
Discounted cash flow | Affiliates | Level III
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate			10.00%
Minimum | Discounted cash flow | Affiliates | Level III
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Average interest rate			2.00%
Maximum | Discounted cash flow | Affiliates | Level III
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Average interest rate			3.00%