SEGMENT REPORTING (Revenue, Expenses and Other Income (Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment revenues
Total revenues	$ 602,758	$ 384,822	$ 616,167	$ 862,019
Total segment revenues	326,435	286,884	755,855	591,544
Segment expenses
Total expenses	483,567	335,701	565,526	704,808
Segment other income
Total other income (expense)	121,906	35,262	(105,957)	63,132
Operating segment
Segment revenues
Performance income—realized	44,625	35,994	196,395	104,567
Segment expenses
Total performance related compensation - realized	37,044	25,229	155,037	74,446
Ares Management L.P
Segment revenues
Total revenues	602,758	384,822	616,167	862,019
Segment expenses
Compensation and benefits	185,131	162,170	365,215	319,016
General, administrative and other expenses	58,084	65,416	120,415	116,603
Ares Management L.P | ARCC | Affiliated entity
Segment other income
Management fees, part I fees	41,306	39,157	85,229	77,550
Ares Management L.P | Management fees
Segment revenues
Total revenues	266,867	237,846	530,716	462,505
Ares Management L.P | Operating segment
Segment revenues
Performance income—realized	44,625	35,994	196,395	104,567
Total segment revenues	326,435	286,884	755,855	591,544
Segment expenses
Compensation and benefits	111,626	98,184	214,560	189,012
General, administrative and other expenses	20,235	21,816	44,116	42,510
Total performance related compensation - realized	37,044	25,229	155,037	74,446
Total expenses	168,905	145,229	413,713	305,968
Segment other income
Investment income—realized	9,009	2,266	20,926	17,540
Interest and other investment income—realized	8,036	10,068	14,219	14,372
Interest expense	(5,938)	(5,394)	(10,267)	(10,587)
Total other income (expense)	11,107	6,940	24,878	21,325
Ares Management L.P | Operating segment | Management fees
Segment revenues
Total revenues	277,672	246,279	551,450	479,291
Ares Management L.P | Operating segment | Other fees
Segment revenues
Total revenues	$ 4,138	$ 4,611	$ 8,010	$ 7,686