UNITHOLDERS' CAPITAL - Summary of Net Income (Loss) (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Weighted average Oaktree Operating Group units outstanding (in thousands):
Weighted average number of Class A units outstanding (in shares)	62,617	48,372	62,256	46,727
Oaktree Operating Group net income:
Oaktree Operating Group net income:	$ 140,834	$ (316,638)	$ 224,002	$ 966,381
Net income (loss) attributable to Oaktree Capital Group, LLC:
Income tax expense of Intermediate Holding Companies	(8,571)	(5,485)	(21,251)	(13,360)
Net income attributable to Oaktree Capital Group, LLC	$ 49,047	$ 19,814	$ 77,125	$ 58,067
OCGH non-controlling interest
Weighted average Oaktree Operating Group units outstanding (in thousands):
Weighted average number of Class A units outstanding (in shares)	92,440	105,467	92,177	106,813
Oaktree Operating Group net income:
Oaktree Operating Group net income:	$ 83,256	$ 54,240	$ 142,082	$ 163,006
Class A Unitholders
Weighted average Oaktree Operating Group units outstanding (in thousands):
Weighted average number of Class A units outstanding (in shares)	62,617	48,372	62,256	46,727
Oaktree Operating Group net income:
Oaktree Operating Group net income:	$ 56,397	$ 24,878	$ 96,012	$ 70,188
Oaktree Operating Group
Weighted average Oaktree Operating Group units outstanding (in thousands):
Weighted average number of Class A units outstanding (in shares)	155,057	153,839	154,433	153,540
Oaktree Operating Group net income:
Oaktree Operating Group net income:	$ 139,653	$ 79,118	$ 238,094	$ 233,194
Oaktree Capital Group, LLC
Net income (loss) attributable to Oaktree Capital Group, LLC:
Oaktree Operating Group net income attributable to Class A unitholders	56,397	24,878	96,012	70,188
Non-Operating Group expenses	(201)	(626)	(465)	(960)
Income tax expense of Intermediate Holding Companies	(7,149)	(4,438)	(18,422)	(11,161)
Net income attributable to Oaktree Capital Group, LLC	$ 49,047	$ 19,814	$ 77,125	$ 58,067