CONSOLIDATION (Income Statement) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	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
Revenues
Administrative, transaction and other fees									$ 0
Total 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
Total 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 (expense)
Interest expense									(21,219)	(17,981)	(18,949)
Total other income	91,629	58,880	29,387	59,222	39,841	73,339	17,406	(15,451)	239,118	115,135	36,082
Income before taxes	136,943	88,424	115,080	(190,588)	98,463	125,425	83,006	(8,974)	149,859	297,920	81,484
Income tax (benefit) expense									(23,052)	11,019	19,064
Net income	131,536	83,872	113,827	(156,324)	95,316	117,784	87,440	(13,639)	172,911	286,901	62,420
Net income 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
Less: 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
Affiliated entity | ARCC
Revenues
Management fees (includes ARCC Part I Fees of $105,467, $121,181 and $121,491 for the years ended December 31, 2017, 2016 and 2015, respectively)									105,467	121,181	121,491
Reportable legal entity
Revenues
Administrative, transaction and other fees										0	0
Eliminations
Revenues
Management fees (includes ARCC Part I Fees of $105,467, $121,181 and $121,491 for the years ended December 31, 2017, 2016 and 2015, respectively)									(22,406)	(17,383)	(16,519)
Performance fees									(5,092)	(1,139)	4,418
Administrative, transaction and other fees									0		(1,178)
Total revenues									(27,498)	(18,522)	(13,279)
Expenses
Compensation and benefits									0
Performance fee compensation									0
General, administrative and other expenses									0
Transaction support expense									0
Total expenses									(26,481)	(21,447)	(18,312)
Other income (expense)
Net realized gain (loss) on investments									(29,534)	1,290	14,225
Interest and dividend income									(2,361)	(4,480)	(3,497)
Debt extinguishment expense											0
Other income, net									0		1,036
Total other income									(25,646)	4,856	12,007
Income before taxes									(26,663)	7,781	17,040
Income tax (benefit) expense									0
Net income									(26,663)	7,781	17,040
Less: Preferred equity distributions paid									0	0
Net income attributable to Ares Management, L.P. common unitholders									0	0
Ares Management L.P
Revenues
Management fees (includes ARCC Part I Fees of $105,467, $121,181 and $121,491 for the years ended December 31, 2017, 2016 and 2015, respectively)									722,419	642,068	634,399
Performance fees									636,674	517,852	150,615
Administrative, transaction and other fees									56,406	39,285	29,428
Total revenues									1,415,499	1,199,205	814,442
Expenses
Compensation and benefits									514,109	447,725	414,454
Performance fee compensation									479,722	387,846	111,683
General, administrative and other expenses									196,730	159,776	224,798
Transaction support expense									275,177	0	0
Other income (expense)
Net realized gain (loss) on investments									67,034	28,251	17,009
Interest and dividend income									12,715	23,781	14,045
Interest expense									(21,219)	(17,981)	(18,949)
Debt extinguishment expense									0	0	(11,641)
Other income, net									19,470	35,650	21,680
Income tax (benefit) expense									(24,939)	11,756	19,060
Ares Management L.P | Reportable legal entity
Revenues
Management fees (includes ARCC Part I Fees of $105,467, $121,181 and $121,491 for the years ended December 31, 2017, 2016 and 2015, respectively)									744,825	659,451	650,918
Performance fees									641,766	518,991	146,197
Administrative, transaction and other fees									56,406	39,285	30,606
Total revenues									1,442,997	1,217,727	827,721
Expenses
Compensation and benefits									514,109	447,725	414,454
Performance fee compensation									479,722	387,846	111,683
General, administrative and other expenses									196,730	159,776	224,798
Transaction support expense									275,177
Total expenses									1,465,738	995,347	750,935
Other income (expense)
Net realized gain (loss) on investments									96,568	26,961	2,784
Interest and dividend income									15,076	28,261	17,542
Interest expense									(21,219)	(17,981)	(18,949)
Debt extinguishment expense											(11,641)
Other income, net									19,470	35,650	20,644
Total other income									109,895	72,891	10,380
Income before taxes									87,154	295,271	87,166
Income tax (benefit) expense									(24,939)	11,756	19,060
Net income									112,093	283,515	68,106
Net income attributable to Ares Management, L.P.									76,178	111,808	19,378
Less: Preferred equity distributions paid									21,700	12,176
Net income attributable to Ares Management, L.P. common unitholders									54,478	99,632
Consolidated Funds
Expenses
Expenses of Consolidated Funds									39,020	21,073	18,105
Other income (expense)
Net realized gain (loss) on investments									100,124	(2,057)	(24,616)
Interest and dividend income									187,721	138,943	117,373
Interest expense									(126,727)	(91,452)	(78,819)
Income tax (benefit) expense									1,887	(737)	4
Less: Net income attributable to non-controlling interests									60,818	3,386	(5,686)
Consolidated Funds | Reportable legal entity
Expenses
Expenses of Consolidated Funds									65,501	42,520	36,417
Total expenses									65,501	42,520	36,417
Other income (expense)
Net realized gain (loss) on investments									126,836	(2,999)	(17,614)
Interest and dividend income									187,721	138,943	117,373
Interest expense									(159,688)	(98,556)	(86,064)
Total other income									154,869	37,388	13,695
Income before taxes									89,368	(5,132)	(22,722)
Income tax (benefit) expense									1,887	(737)	4
Net income									87,481	(4,395)	(22,726)
Less: Net income attributable to non-controlling interests									87,481	(4,395)	(22,726)
Consolidated Funds | Eliminations
Expenses
Expenses of Consolidated Funds									(26,481)	(21,447)	(18,312)
Other income (expense)
Net realized gain (loss) on investments									(26,712)	942	(7,002)
Interest and dividend income									0
Interest expense									32,961	7,104	7,245
Less: Net income attributable to non-controlling interests									(26,663)	7,781	17,040
Ares Operating Group
Other income (expense)
Less: Net income attributable to non-controlling interests									35,915	171,251	48,390
Less: Net income (loss) attributable to redeemable interests									0	456	338
Ares Operating Group | Reportable legal entity
Other income (expense)
Less: Net income attributable to non-controlling interests									35,915	171,251	48,390
Less: Net income (loss) attributable to redeemable interests										$ 456	$ 338
Ares Operating Group | Eliminations
Other income (expense)
Less: Net income attributable to non-controlling interests									$ 0