SEGMENT REPORTING - Schedule of Reconciliation of Total Segments to Income Loss Attributable to Oaktree Capital Group, LLC and Total Assets (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Segment Reporting, Asset Reconciling Item [Line Items]
Management fees	$ 195,015	$ 50,923	$ 393,568	$ 101,742
Incentive income	87,701	564	143,638	564
Investment Income	41,000	15,694	70,447	28,376
Total expenses	(191,648)	(245,929)	(376,832)	(481,903)
Interest expense, net	(26,730)	(52,742)	(54,435)	(99,311)
Other income, net	5,548	2,863	11,349	7,557
Other income (loss) of Consolidated Funds	38,519	(82,526)	57,518	1,422,716
Income taxes	(8,571)	(5,485)	(21,251)	(13,360)
OCGH non-controlling interest	(84,468)	(55,509)	(144,502)	(163,610)
Net income attributable to Oaktree Capital Group, LLC	49,047	19,814	77,125	58,067
Corporate investments	1,036,238	176,678	1,036,238	176,678	$ 213,988
Total assets	6,624,875	55,186,630	6,624,875	55,186,630	$ 51,762,731
Investment Management
Segment Reporting, Asset Reconciling Item [Line Items]
Management fees	197,450	190,197	398,720	380,292
Incentive income	87,647	61,148	184,235	214,027
Total expenses	(180,673)	(178,662)	(380,036)	(416,126)
Interest expense, net	(7,977)	(8,782)	(16,659)	(17,715)
Other income, net	(1,527)	(1,987)	(1,392)	(1,996)
Corporate investments	1,400,000		1,400,000
Non-controlling Interests in Consolidated Funds
Segment Reporting, Asset Reconciling Item [Line Items]
Net income (loss) attributable to non-controlling interests in consolidated funds	(7,319)	391,961	(2,375)	(744,704)
OCGH non-controlling interest	(7,319)	391,961	(2,375)	(744,704)
Segment | Investment Management
Segment Reporting, Asset Reconciling Item [Line Items]
Management fees	197,450	190,197	398,720	380,292
Incentive income	87,647	61,148	184,235	214,027
Investment Income	47,725	23,365	62,802	76,823
Total expenses	(180,673)	(178,662)	(380,036)	(416,126)
Interest expense, net	(7,977)	(8,782)	(16,659)	(17,715)
Other income, net	(1,527)	(1,987)	(1,392)	(1,996)
Other income (loss) of Consolidated Funds	0	0	0	0
Income taxes	0	0	0	0
OCGH non-controlling interest	0	0	0	0
Net income attributable to Oaktree Capital Group, LLC	142,645	85,279	247,670	235,305
Corporate investments	1,371,978	1,560,235	1,371,978	1,560,235
Total assets	3,160,373	3,245,460	3,160,373	3,245,460
Segment | Non-controlling Interests in Consolidated Funds | Investment Management
Segment Reporting, Asset Reconciling Item [Line Items]
Net income (loss) attributable to non-controlling interests in consolidated funds	0	0	0	0
Adjustments
Segment Reporting, Asset Reconciling Item [Line Items]
Management fees	(2,435)	(139,274)	(5,152)	(278,550)
Incentive income	54	(60,584)	(40,597)	(213,463)
Investment Income	(6,725)	(7,671)	7,645	(48,447)
Total expenses	(10,975)	(67,267)	3,204	(65,777)
Interest expense, net	(18,753)	(43,960)	(37,776)	(81,596)
Other income, net	7,075	4,850	12,741	9,553
Other income (loss) of Consolidated Funds	38,519	(82,526)	57,518	1,422,716
Income taxes	(8,571)	(5,485)	(21,251)	(13,360)
OCGH non-controlling interest	(84,468)	(55,509)	(144,502)	(163,610)
Net income attributable to Oaktree Capital Group, LLC	(93,598)	(65,465)	(170,545)	(177,238)
Corporate investments	(335,740)	(1,383,557)	(335,740)	(1,383,557)
Total assets	3,464,502	51,941,170	3,464,502	51,941,170
Adjustments | Non-controlling Interests in Consolidated Funds
Segment Reporting, Asset Reconciling Item [Line Items]
Net income (loss) attributable to non-controlling interests in consolidated funds	$ (7,319)	$ 391,961	$ (2,375)	$ (744,704)