FAIR VALUE - Changes in Fair Value (Details) - Oaktree Capital Group Excluding Consolidated Funds - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Corporate Investments
Beginning balance	$ 48,423	$ 53,095	$ 45,426	$ 50,902
Contributions or additions	54	5,117	54	6,410
Distributions	(7,181)	(30,040)	(7,181)	(30,855)
Net gain (loss) included in earnings	938	2,912	3,935	4,627
Ending balance	42,234	31,084	42,234	31,084
Net change in unrealized gains (losses) attributable to financial instruments still held at end of period	938	2,740	3,935	3,659
Contingent Liability
Beginning balance	(6,576)	(16,203)	(6,657)	(18,778)
Contributions or additions	0	0	0	0
Distributions	0	0	0	0
Net gain (loss) included in earnings	(161)	7,074	(80)	9,649
Ending balance	(6,737)	(9,129)	(6,737)	(9,129)
Net change in unrealized gains (losses) attributable to financial instruments still held at end of period	$ (161)	$ 7,074	$ (80)	$ 9,649