FAIR VALUE - Changes in Fair Value (Details) - Oaktree Capital Group Excluding Consolidated Funds - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Corporate Investments
Beginning balance	$ 22,022	$ 42,234	$ 30,311	$ 45,426
Contributions or additions	772	883	2,562	937
Distributions	(1,996)	0	(6,993)	(7,181)
Net gain (loss) included in earnings	2,536	2,519	(2,546)	6,454
Ending balance	23,334	45,636	23,334	45,636
Net change in unrealized gains (losses) attributable to financial instruments still held at end of period	2,536	2,519	(989)	6,454
Contingent Liability
Beginning balance	0	(6,737)	0	(6,657)
Contributions or additions	0	0	0	0
Distributions	0	0	0	0
Net gain (loss) included in earnings	0	2,219	0	2,139
Ending balance	0	(4,518)	0	(4,518)
Net change in unrealized gains (losses) attributable to financial instruments still held at end of period	$ 0	$ 2,219	$ 0	$ 2,139