ORGANIZATION AND BASIS OF PRESENTATION - Organization Structure (Details) - segment	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Organization and Basis of Presentation [Line Items]
Number of investing groups	3
Direct Ownership Interest	100.00%	100.00%
Ares Owners Holdings, L.P.
Organization and Basis of Presentation [Line Items]
Direct Ownership Interest	55.36%	55.82%
Ares Management, L.P.
Organization and Basis of Presentation [Line Items]
Direct Ownership Interest	14.64%
Ares Management, L.P. | ADIA
Organization and Basis of Presentation [Line Items]
Ownership percentage	42.74%
Ares Management, L.P. | Ares Owners Holdings, L.P.
Organization and Basis of Presentation [Line Items]
Ownership percentage	42.62%
Ares Holdings Inc. | Ares Management, L.P.
Organization and Basis of Presentation [Line Items]
Ownership percentage	100.00%
Ares Investments L.P. | Ares Management, L.P.
Organization and Basis of Presentation [Line Items]
Ownership percentage	38.26%
Ares Investments L.P. | Ares Owners Holdings, L.P.
Organization and Basis of Presentation [Line Items]
Ownership percentage	55.83%
Ares Investments L.P. | Alleghany
Organization and Basis of Presentation [Line Items]
Direct Ownership Interest	5.92%
Ares Holdings L.P. | Ares Owners Holdings, L.P.
Organization and Basis of Presentation [Line Items]
Ownership percentage	55.83%
Ares Holdings L.P. | Alleghany
Organization and Basis of Presentation [Line Items]
Direct Ownership Interest	5.92%
Ares Holdings L.P. | Ares Holdings Inc.
Organization and Basis of Presentation [Line Items]
Ownership percentage	38.26%
Ares Offshore Holdings, Ltd. | Ares Management, L.P.
Organization and Basis of Presentation [Line Items]
Ownership percentage	100.00%
Ares Offshore Holdings L.P. | Ares Owners Holdings, L.P.
Organization and Basis of Presentation [Line Items]
Ownership percentage	55.83%
Ares Offshore Holdings L.P. | Alleghany
Organization and Basis of Presentation [Line Items]
Direct Ownership Interest	5.92%
Ares Offshore Holdings L.P. | Ares Offshore Holdings, Ltd.
Organization and Basis of Presentation [Line Items]
Ownership percentage	38.26%
Ares Investments Holdings LLC | Ares Investments L.P.
Organization and Basis of Presentation [Line Items]
Ownership percentage	100.00%
Ares Management, LLC | Ares Holdings L.P.
Organization and Basis of Presentation [Line Items]
Ownership percentage	100.00%
Ares Finance Co LLC | Ares Holdings L.P.
Organization and Basis of Presentation [Line Items]
Ownership percentage	100.00%