SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Condensed Consolidated Statement of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Expenses
Total expenses	$ 221,017	$ 448,197	$ 427,300	$ 939,664
Total other income (expense)	67,926	(8,920)	70,166	47,715
Income (loss) before taxes	51,072	115,080	113,118	(75,508)
Income tax expense (benefit)	36,903	1,253	24,528	(33,011)
Net income (loss)	14,169	113,827	88,590	(42,497)
Net income (loss) attributable to Ares Management, L.P.	(11,775)	49,878	29,173	8,744
Less: Preferred equity dividend paid	5,425	5,425	10,850	10,850
Net income (loss) attributable to Ares Management, L.P. common shareholders	(17,200)	44,453	18,323	(2,106)
Balances without adoption of ASC 606
Expenses
Less: Preferred equity dividend paid	5,425
Ares Management L.P
Revenues
Total revenues	204,163	572,197	470,252	816,441
Expenses
Net realized and unrealized gain (loss) on investments	3,267	(6,588)	2,428	(5,700)
Interest and dividend income	2,356	1,462	5,703	3,386
Other income (expense), net	(1,987)	2,822	(2,298)	19,318
Income tax expense (benefit)	36,834	857	24,459	(33,875)
Consolidated Funds
Expenses
Expenses of Consolidated Funds	35,112	4,522	36,428	8,433
Net realized and unrealized gain (loss) on investments	34,487	(12,713)	21,402	19,323
Income tax expense (benefit)	69	396	69	864
Net income (loss) attributable to non-controlling interests related to consolidated VIEs	9,882	(8,647)	10,249	7,208
Consolidated Funds | Balances without adoption of ASC 606
Expenses
Net income (loss) attributable to non-controlling interests related to consolidated VIEs	13,461
AOG
Expenses
Net income (loss) attributable to non-controlling interests related to consolidated VIEs	16,062	72,596	49,168	(58,449)
AOG | Balances without adoption of ASC 606
Expenses
Net income (loss) attributable to non-controlling interests related to consolidated VIEs	15,629
ASC 323 | As Previously Reported | Ares Management L.P
Revenues
Total revenues		533,890		775,547
Expenses
Net realized and unrealized gain (loss) on investments		30,079		32,734
Interest and dividend income		3,102		5,846
ASC 323 | Adjustments | Ares Management L.P
Revenues
Total revenues		38,307		40,894
Expenses
Net realized and unrealized gain (loss) on investments		(36,667)		(38,434)
Interest and dividend income		(1,640)		(2,460)
ASC 606 | Adjustments
Expenses
Total expenses	0		0
Total other income (expense)	12
Income (loss) before taxes	2,936		3,780
Income tax expense (benefit)	(50)		200
Net income (loss)	2,986		3,580
Net income (loss) attributable to Ares Management, L.P.	(160)		616
Net income (loss) attributable to Ares Management, L.P. common shareholders	(160)		616
ASC 606 | Balances without adoption of ASC 606
Expenses
Total expenses	221,017		427,300
Total other income (expense)	67,938
Income (loss) before taxes	54,008		116,898
Income tax expense (benefit)	36,853		24,728
Net income (loss)	17,155		92,170
Net income (loss) attributable to Ares Management, L.P.	(11,935)		29,789
Less: Preferred equity dividend paid			10,850
Net income (loss) attributable to Ares Management, L.P. common shareholders	(17,360)		18,939
ASC 606 | Ares Management L.P | Adjustments
Revenues
Total revenues	2,924		3,780
Expenses
Other income (expense), net	12
ASC 606 | Ares Management L.P | Balances without adoption of ASC 606
Revenues
Total revenues	207,087		474,032
Expenses
Other income (expense), net	(1,975)
ASC 606 | Consolidated Funds | Adjustments
Expenses
Expenses of Consolidated Funds	0		0
Net income (loss) attributable to non-controlling interests related to consolidated VIEs	3,579		1,860
ASC 606 | Consolidated Funds | Balances without adoption of ASC 606
Expenses
Expenses of Consolidated Funds	35,112		36,428
Net income (loss) attributable to non-controlling interests related to consolidated VIEs			12,109
ASC 606 | AOG | Adjustments
Expenses
Net income (loss) attributable to non-controlling interests related to consolidated VIEs	(433)		1,104
ASC 606 | AOG | Balances without adoption of ASC 606
Expenses
Net income (loss) attributable to non-controlling interests related to consolidated VIEs			50,272
Performance fees | Ares Management L.P
Revenues
Total revenues		0		0
Performance fees | ASC 323 | As Previously Reported | Ares Management L.P
Revenues
Total revenues		338,024		393,196
Performance fees | ASC 323 | Adjustments | Ares Management L.P
Revenues
Total revenues		(338,024)		(393,196)
Carried interest allocation
Revenues
Total revenues			40,685
Carried interest allocation | Ares Management L.P
Revenues
Total revenues	(13,444)	333,808	40,685	385,815
Carried interest allocation | ASC 323 | As Previously Reported | Ares Management L.P
Revenues
Total revenues		0		0
Carried interest allocation | ASC 323 | Adjustments | Ares Management L.P
Revenues
Total revenues		333,808		385,815
Incentive fees | Ares Management L.P
Revenues
Total revenues	7,740	4,216	12,811	7,381
Incentive fees | ASC 323 | As Previously Reported | Ares Management L.P
Revenues
Total revenues		0		0
Incentive fees | ASC 323 | Adjustments | Ares Management L.P
Revenues
Total revenues		4,216		7,381
Incentive fees | ASC 606 | Ares Management L.P | Adjustments
Revenues
Total revenues	2,924		3,780
Incentive fees | ASC 606 | Ares Management L.P | Balances without adoption of ASC 606
Revenues
Total revenues	10,664		16,591
Principal investment income | Ares Management L.P
Revenues
Total revenues	$ 1,871	38,307	$ 6,780	40,894
Principal investment income | ASC 323 | As Previously Reported | Ares Management L.P
Revenues
Total revenues		0		0
Principal investment income | ASC 323 | Adjustments | Ares Management L.P
Revenues
Total revenues		$ 38,307		$ 40,894