OTHER ASSETS - Schedule of Fixed Assets, Net (Details) - Ares Management L.P - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	$ 238,179	$ 183,567
Less: accumulated depreciation	(115,956)	(103,889)
Fixed assets, net	122,223	79,678
Office and computer equipment
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	52,681	41,547
Internal-use software
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	51,226	57,200
Leasehold improvements
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	$ 134,272	$ 84,820