OTHER ASSETS - Schedule of Fixed Assets, Net (Details) - Ares Management L.P - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	$ 344,068	$ 258,289
Less: accumulated depreciation	(116,242)	(80,618)
Fixed assets, net	227,826	177,671
Office and computer equipment
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	81,867	62,920
Internal-use software
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	35,023	29,119
Leasehold improvements
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	$ 227,178	$ 166,250