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SEGMENT REPORTING (Reconciliation of Income Before Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Economic net income
Income before taxes	$ 101,261	$ 103,576	$ 84,383	$ 135,960	$ 18,880	$ 52,343	$ 51,072	$ 62,046	$ 425,180	$ 184,341	$ 149,859
Adjustments:
Depreciation and amortization expense											17,900
Equity compensation expense									97,691	89,724	69,711
Income before taxes of non-controlling interests in Consolidated Funds, net of eliminations											35,915
Consolidated Funds
Adjustments:
Income before taxes of non-controlling interests in Consolidated Funds, net of eliminations									39,704	20,512	60,818
Total investment income - realized									(395,599)	(337,875)	(187,721)
Due to affiliates	0				0				0	0
Operating segment
Economic net income
Income before taxes									425,180	184,341	149,859
Adjustments:
Depreciation and amortization expense									40,602	25,087	30,481
Equity compensation expense									97,691	89,724	69,711
Transaction support expense									16,266	2,936	259,899
Deferred placement fees									24,306	20,343	19,765
Other expense									(460)	13,489	(1,042)
Total performance (income) loss - unrealized									(303,142)	247,212	(325,915)
Total performance related compensation - unrealized									206,799	(221,343)	237,392
Total investment (income) loss - unrealized									35,681	49,474	(44,992)
Realized income									735,964	590,475	507,239
Total performance income - realized									(402,518)	(357,207)	(317,787)
Total performance related compensation - realized									290,382	251,597	242,330
Total investment income - realized									(69,715)	(29,726)	(29,917)
Fee related earnings									554,113	455,139	401,865
Operating segment \| Consolidated Funds
Adjustments:
Income before taxes of non-controlling interests in Consolidated Funds, net of eliminations									(39,174)	(20,643)	(62,705)
OMG
Adjustments:
OMG expense, net									229,264	196,512	173,047
Realized income									232,478	195,079	181,799
Total performance income - realized									0	0	0
Total performance related compensation - realized									0	0	0
Total investment income - realized									2,024	(4,748)	(3,076)
Fee related earnings									(230,454)	(199,827)	(184,875)
Subsidiaries \| Operating segment
Adjustments:
Income before taxes of non-controlling interests in Consolidated Funds, net of eliminations									2,951	3,343	1,739
Ares Management L.P
Adjustments:
Transaction support expense									0	0	275,177
Other expense									0	10	(1,731)
Due to affiliates	71,445				82,411				71,445	82,411
Ares Management L.P \| Rent and other occupancy expenses \| Affiliated entity \| ARCC
Adjustments:
Due to affiliates	$ 11,800				$ 11,800		$ 600		11,800	11,800	2,200	$ 3,000	$ 3,200	$ 2,900
Ares Management L.P \| Operating segment
Adjustments:
Total investment (income) loss - unrealized									(26,620)	(49,241)	46,860
Realized income									(735,964)	(590,475)	(507,239)
Total performance income - realized									(402,518)	(357,207)	(317,787)
Total performance related compensation - realized									290,382	251,597	242,330
Total investment income - realized									(69,715)	(29,726)	(29,917)
Fee related earnings									$ 554,113	$ 455,139	$ 401,865