GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) - USD ($)	3 Months Ended			12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Acquired Finite-Lived Intangible Assets [Line Items]
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]				General, administrative and other expenses	General, administrative and other expenses
Depreciation and amortization expense				$ 126,000,000	$ 133,600,000
Impaired and fully amortized intangibles, amount removed during the period				109,300,000
Acquisitions				124,414,000	213,218,000
Reallocation				0	0
Goodwill impairment				0	0
Selling, General and Administrative Expenses
Acquired Finite-Lived Intangible Assets [Line Items]
Depreciation and amortization expense						$ 91,300,000
Secondaries Group
Acquired Finite-Lived Intangible Assets [Line Items]
Non-cash impairment charges				78,700,000	181,600,000
Acquisitions				0	(96,000)
Reallocation				0	0
Real Assets Group
Acquired Finite-Lived Intangible Assets [Line Items]
Acquisitions				22,000	213,314,000
Reallocation				0	10,530,000
Credit Group
Acquired Finite-Lived Intangible Assets [Line Items]
Acquisitions				0	0
Reallocation				224,587,000	$ 0
From Ares SSG To Credit Group
Acquired Finite-Lived Intangible Assets [Line Items]
Reallocation				224,600,000
Management contracts | Real Assets Group
Acquired Finite-Lived Intangible Assets [Line Items]
Non-cash impairment charges		$ 4,600,000
Management contracts | Credit Group
Acquired Finite-Lived Intangible Assets [Line Items]
Non-cash impairment charges		$ 700,000
Client relationships | Secondaries Group
Acquired Finite-Lived Intangible Assets [Line Items]
Non-cash impairment charges	$ 65,700,000
Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Non-cash impairment charges			$ 7,800,000
Crescent Point Capital
Acquired Finite-Lived Intangible Assets [Line Items]
Acquisitions				124,400,000
Crescent Point Capital | Management contracts
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired				$ 32,700,000
Acquired finite lived intangible assets useful life				5 years 6 months
Crescent Point Capital | Client relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired				$ 22,300,000
Acquired finite lived intangible assets useful life				9 years