DERIVATIVES AND HEDGING - Balance Sheet Offsetting (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Derivative Assets:
Derivative assets, at fair value	$ 5,069	$ 204,226
Gross Amounts Not Offset in Statements of Financial Condition
Derivative Assets	4,300	50,285
Cash Collateral Received (Pledged)	0	0
Net Amount	769	153,941
Derivative Liabilities:
Derivative liabilities	(17,003)	(304,437)
Gross Amounts Not Offset in Statements of Financial Condition
Derivative Liabilities	(4,300)	(50,285)
Cash Collateral Pledged	(1,364)	(202,765)
Net Amount	(11,339)	(51,387)
Oaktree Capital Group, LLC
Derivative Liabilities:
Derivative liabilities	(15,628)	(4,229)
Gross Amounts Not Offset in Statements of Financial Condition
Derivative Liabilities	(4,289)	(2,047)
Cash Collateral Pledged	0	0
Net Amount	(11,339)	(2,182)
Oaktree Capital Group, LLC | Foreign-currency forward contracts
Derivative Assets:
Derivative assets, at fair value	4,649	5,875
Gross Amounts Not Offset in Statements of Financial Condition
Derivative Assets	4,289	2,047
Cash Collateral Received (Pledged)	0	0
Net Amount	360	3,828
Derivative Liabilities:
Derivative liabilities	(14,916)	(3,286)
Gross Amounts Not Offset in Statements of Financial Condition
Derivative Liabilities	(4,289)	(2,047)
Cash Collateral Pledged	0	0
Net Amount	(10,627)	(1,239)
Oaktree Capital Group, LLC | Interest-rate swaps
Derivative Liabilities:
Derivative liabilities	(712)	(943)
Gross Amounts Not Offset in Statements of Financial Condition
Derivative Liabilities	0	0
Cash Collateral Pledged	0	0
Net Amount	(712)	(943)
Consolidated Funds
Derivative Assets:
Derivative assets, at fair value	420	198,351
Gross Amounts Not Offset in Statements of Financial Condition
Derivative Assets	11	48,238
Cash Collateral Received (Pledged)	0	0
Net Amount	409	150,113
Derivative Liabilities:
Derivative liabilities	(1,375)	(300,208)
Gross Amounts Not Offset in Statements of Financial Condition
Derivative Liabilities	(11)	(48,238)
Cash Collateral Pledged	(1,364)	(202,765)
Net Amount	0	(49,205)
Consolidated Funds | Foreign-currency forward contracts
Derivative Assets:
Derivative assets, at fair value	416	156,234
Gross Amounts Not Offset in Statements of Financial Condition
Derivative Assets	11	38,033
Cash Collateral Received (Pledged)	0	0
Net Amount	405	118,201
Derivative Liabilities:
Derivative liabilities	(11)	(64,364)
Gross Amounts Not Offset in Statements of Financial Condition
Derivative Liabilities	(11)	(38,788)
Cash Collateral Pledged	0	0
Net Amount	0	(25,576)
Consolidated Funds | Total-return and interest-rate swaps
Derivative Assets:
Derivative assets, at fair value		16,544
Gross Amounts Not Offset in Statements of Financial Condition
Derivative Assets		4,526
Cash Collateral Received (Pledged)		0
Net Amount		12,018
Derivative Liabilities:
Derivative liabilities	(921)	(231,610)
Gross Amounts Not Offset in Statements of Financial Condition
Derivative Liabilities	0	(5,304)
Cash Collateral Pledged	(921)	(202,677)
Net Amount	0	(23,629)
Consolidated Funds | Options and futures
Derivative Assets:
Derivative assets, at fair value	4	25,559
Gross Amounts Not Offset in Statements of Financial Condition
Derivative Assets	0	5,665
Cash Collateral Received (Pledged)	0	0
Net Amount	4	19,894
Derivative Liabilities:
Derivative liabilities	(443)	(4,234)
Gross Amounts Not Offset in Statements of Financial Condition
Derivative Liabilities	0	(4,146)
Cash Collateral Pledged	(443)	(88)
Net Amount	$ 0	0
Consolidated Funds | Swaptions
Derivative Assets:
Derivative assets, at fair value		14
Gross Amounts Not Offset in Statements of Financial Condition
Derivative Assets		14
Cash Collateral Received (Pledged)		0
Net Amount		$ 0