SEGMENT REPORTING (Other Income (Expense)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total segment realized net investment income	$ 32,787	$ 38,754	$ 95,919	$ 108,920
Ares Management L.P
Segment Reporting, Other Significant Reconciling Item [Line Items]
Other income from Consolidated Funds eliminated in consolidation, net	(1,870)	811	(1,570)	(1,487)
Operating segment
Segment Reporting, Other Significant Reconciling Item [Line Items]
Investment (income) loss - unrealized	1,094	(25,356)	9,309	(30,921)
Other (income) expense, net	461	(3)	460	(13,564)
Operating segment | Ares Management L.P
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total segment realized net investment income	7,007	15,614	28,332	28,045
Investment (income) loss - unrealized	(4,138)	26,121	(12,703)	30,390
Interest and other investment (income) loss - unrealized	3,044	(765)	3,394	531
Operating segment | Consolidated Funds
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total segment realized net investment income	32,787	38,754	95,919	108,920
Reconciling items
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total segment realized net investment income	(25,780)	(23,140)	(67,587)	(80,875)
Principal investment income	(13,865)	7,886	(45,336)	(9,544)
Other (income) expense, net	(461)	3	(460)	1,728
Reconciling items | Subsidiaries | Non-Controlling interest
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total segment realized net investment income	(10)	(8)	(31)	(23)
Reconciling items | Performance income reclass
Segment Reporting, Other Significant Reconciling Item [Line Items]
Performance fee reclass	27	(795)	(553)	211
Reconciling items | Consolidated Funds
Segment Reporting, Other Significant Reconciling Item [Line Items]
Other expense from Consolidated Funds added in consolidation, net	(37,070)	(34,645)	(101,285)	(111,090)
Eliminations | Consolidated Funds
Segment Reporting, Other Significant Reconciling Item [Line Items]
Other income from Consolidated Funds eliminated in consolidation, net	(1,124)	(86)	(1,214)	(620)
OMG
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total segment realized net investment income	$ 87	$ (5,079)	$ (71)	$ (11,546)