SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Condensed Consolidated Statement of Changes in Equity) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity	$ 1,535,249	$ 1,460,292
Cumulative effect of the adoption of ASC 606		0
As adjusted balance at January 1, 2018		1,437,681
Ares Management L.P | Accumulated Other Comprehensive Loss
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity	(6,758)	(4,208)
As adjusted balance at January 1, 2018		(4,208)
AOG | Non-Controlling interest
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity	316,048	358,186
As adjusted balance at January 1, 2018		341,069
Consolidated Funds | Non-Controlling interest
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity	577,217	528,488
As adjusted balance at January 1, 2018		533,821
Partners' Capital | Ares Management L.P
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity	349,981	279,065
As adjusted balance at January 1, 2018		268,238
Partners' Capital | Preferred Partner
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total equity	$ 298,761	298,761
As adjusted balance at January 1, 2018		298,761
ASC 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of the adoption of ASC 606		(22,611)
ASC 606 | Ares Management L.P | Accumulated Other Comprehensive Loss
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of the adoption of ASC 606		0
ASC 606 | AOG | Non-Controlling interest
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of the adoption of ASC 606		(17,117)
ASC 606 | Consolidated Funds | Non-Controlling interest
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of the adoption of ASC 606		5,333
ASC 606 | Partners' Capital | Ares Management L.P
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of the adoption of ASC 606		(10,827)
ASC 606 | Partners' Capital | Preferred Partner
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of the adoption of ASC 606		$ 0