SEGMENT REPORTING - Reconciliation of Net Income Attributable to Oaktree Capital Group, LLC to Adjusted Net Income (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Segment Reporting Information [Line Items]
Net income attributable to Oaktree Capital Group, LLC	$ 49,047	$ 19,814	$ 77,125	$ 58,067
Investment income	41,000	15,694	70,447	28,376
Equity-based compensation	14,726	16,083	28,622	27,789
Income taxes	8,571	5,485	21,251	13,360
Non-controlling interests	84,468	55,509	144,502	163,610
Adjusted Net Income	142,645	85,279	247,670	235,305
Adjustments
Segment Reporting Information [Line Items]
Net income attributable to Oaktree Capital Group, LLC	(93,598)	(65,465)	(170,545)	(177,238)
Incentive income	(54)	(5,805)	39,888	11,573
Incentive income compensation	54	5,657	(39,888)	(17,553)
Investment income	(6,725)	(7,671)	7,645	(48,447)
Placement costs	1,210	0	7,914	0
Foreign-currency hedging	3,665	(67)	9,531	(5,379)
Acquisition-related items	(1,889)	1,695	(1,498)	3,502
Income taxes	8,571	5,485	21,251	13,360
Non-Operating Group expenses	201	626	465	960
Non-controlling interests	84,468	55,509	144,502	163,610
Adjustments | Units Issued Prior to IPO and EVUs
Segment Reporting Information [Line Items]
Equity-based compensation	2,281	4,182	5,473	8,865
Adjustments | Collateralized Loan Obligations
Segment Reporting Information [Line Items]
Investment income	(3,149)		(13,578)
Adjustments | OCGH
Segment Reporting Information [Line Items]
Non-controlling interests	$ 82,708	$ 53,692	$ 140,987	$ 161,910