UNITHOLDERS' CAPITAL - Changes in Company Ownership Interest (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Stockholders' Equity Note [Abstract]
Net income attributable to Oaktree Capital Group, LLC	$ 117,324	$ 49,047	$ 172,239	$ 77,125
Equity reallocation between controlling and non-controlling interests	(2,562)	645	9,499	8,126
Change from net income attributable to Oaktree Capital Group, LLC and transfers from non-controlling interests	$ 114,762	$ 49,692	$ 181,738	$ 85,251