DERIVATIVES AND HEDGING - Balance Sheet Offsetting (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Derivative Assets:
Derivative assets	$ 11,913	$ 6,890
Assets
Derivative Assets	0	0
Cash Collateral Received	0	0
Net Amount	11,913	6,890
Derivative Liabilities:
Derivative liabilities	(27,475)	(4,254)
Liabilities
Derivative Liabilities	0	0
Cash Collateral Pledged	0	0
Net Amount	(27,475)	(4,254)
Oaktree Capital Group Excluding Consolidated Funds \| Foreign-currency forward contracts
Derivative Assets:
Derivative assets	3,295
Assets
Derivative Assets	0
Cash Collateral Received	0
Net Amount	3,295
Derivative Liabilities:
Derivative liabilities		(1,703)
Liabilities
Derivative Liabilities		0
Cash Collateral Pledged		0
Net Amount		(1,703)
Consolidated Funds
Derivative Assets:
Derivative assets	8,618	6,890
Derivative Liabilities:
Derivative liabilities	(27,475)	(2,551)
Consolidated Funds \| Foreign-currency forward contracts
Derivative Assets:
Derivative assets	8,618	6,890
Assets
Derivative Assets	0	0
Cash Collateral Received	0	0
Net Amount	8,618	6,890
Derivative Liabilities:
Derivative liabilities	(27,353)	(2,551)
Liabilities
Derivative Liabilities	0	0
Cash Collateral Pledged	0	0
Net Amount	(27,353)	$ (2,551)
Consolidated Funds \| Options and futures
Derivative Liabilities:
Derivative liabilities	(122)
Liabilities
Derivative Liabilities	0
Cash Collateral Pledged	0
Net Amount	$ (122)

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