QUARTERLY FINANCIAL DATA (Details) - USD ($) $ / shares in Units, $ in Thousands					3 Months Ended								12 Months Ended
	Nov. 17, 2017	Aug. 18, 2017	May 30, 2017	Mar. 10, 2017	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Financial Data [Abstract]
Revenues					$ 356,281	$ 283,671	$ 533,890	$ 241,657	$ 358,195	$ 335,460	$ 369,535	$ 136,015	$ 1,415,499	$ 1,199,205	$ 814,442
Expenses					310,967	254,127	448,197	491,467	299,573	283,374	303,935	129,538	1,504,758	1,016,420	769,040
Other income (loss)					91,629	58,880	29,387	59,222	39,841	73,339	17,406	(15,451)	239,118	115,135	36,082
Income (loss) before provision for income taxes					136,943	88,424	115,080	(190,588)	98,463	125,425	83,006	(8,974)	149,859	297,920	81,484
Net income (loss)					131,536	83,872	113,827	(156,324)	95,316	117,784	87,440	(13,639)	172,911	286,901	62,420
Net income (loss) attributable to Ares Management, L.P.					39,596	27,838	49,878	(41,134)	34,019	43,305	37,574	(3,090)	76,178	111,808	19,378
Preferred equity distributions paid					5,425	5,425	5,425	5,425	5,425	6,751	0	0	21,700	12,176	0
Net income attributable to Ares Management, L.P. common unitholders					$ 34,171	$ 22,413	$ 44,453	$ (46,559)	$ 28,594	$ 36,554	$ 37,574	$ (3,090)	$ 54,478	$ 99,632	$ 19,378
Net income attributable to Ares Management, L.P. per common unit:
Basic (in dollars per unit)					$ 0.40	$ 0.26	$ 0.54	$ (0.58)	$ 0.35	$ 0.45	$ 0.46	$ (0.04)	$ 0.62	$ 1.22	$ 0.23
Diluted (in dollars per unit)					0.39	0.26	0.53	(0.58)	0.34	0.43	0.46	(0.04)	$ 0.62	$ 1.20	$ 0.23
Distributions declared per common unit (in dollars per unit)	$ 0.41	$ 0.31	$ 0.13	$ 0.28	$ 0.25	$ 0.41	$ 0.31	$ 0.13	$ 0.28	$ 0.20	$ 0.28	$ 0.15