SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Condensed Consolidated Statement of Operations) (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
Revenues
Total revenues	$ 436,929	$ 466,490	$ 384,822	$ 477,197	$ 247,432	$ 240,777	$ 204,163	$ 266,089		$ 958,461	$ 1,479,943
Other income (expense)
Expenses	362,288	395,701	335,701	369,107	215,874	227,188	221,017	206,283	$ 1,462,797	870,362	1,504,758
Total segment realized net investment income	26,620	32,787	35,262	27,870	(12,678)	38,754	67,926	2,240	122,539	96,242	174,674
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
Income tax expense (benefit)									52,376	32,202	(23,052)
Net income	84,475	91,875	74,878	121,576	16,337	47,212	14,169	74,421	372,804	152,139	172,911
Income before taxes of non-controlling interests in Consolidated Funds, net of eliminations											35,915
Net income attributable to Ares Management Corporation	38,465	33,331	32,139	44,949	11,937	15,910	(11,775)	40,948	148,884	57,020	76,178
Less: Series A Preferred Stock dividends paid	5,425	5,425	5,425	5,425	5,425	5,425	5,425	5,425	21,700	21,700	21,700
Net income attributable to Ares Management Corporation Class A common stockholders	$ 33,040	$ 27,906	$ 26,714	$ 39,524	$ 6,512	$ 10,485	$ (17,200)	$ 35,523	127,184	35,320	54,478
Consolidated Funds
Other income (expense)
Expenses of Consolidated Funds									42,045	53,764	39,020
Net realized and unrealized gains (losses) on investments									15,136	(1,583)	100,124
Income before taxes of non-controlling interests in Consolidated Funds, net of eliminations									39,704	20,512	60,818
AOG
Other income (expense)
Income before taxes of non-controlling interests in Consolidated Funds, net of eliminations									184,216	74,607	35,915
Ares Management L.P
Revenues
Total revenues									1,765,438	958,461	1,479,943
Other income (expense)
Expenses										870,362
Net realized and unrealized gains (losses) on investments									9,554	(1,884)	8,262
Interest and dividend income									7,506	7,028	7,043
Other income (expense), net									(7,840)	(851)	19,470
Total segment realized net investment income										96,242
Income tax expense (benefit)									52,906	32,071	(24,939)
Accounting Standards Update 2016-07 | As Previously Reported | Ares Management L.P
Revenues
Total revenues											1,415,499
Other income (expense)
Net realized and unrealized gains (losses) on investments											67,034
Interest and dividend income											12,715
Accounting Standards Update 2016-07 | Adjustments | Ares Management L.P
Revenues
Total revenues											64,444
Other income (expense)
Net realized and unrealized gains (losses) on investments											(58,772)
Interest and dividend income											(5,672)
ASC 606 | Adjustments
Other income (expense)
Income before taxes										21,027
Income tax expense (benefit)										2,475
Net income										18,552
Net income attributable to Ares Management Corporation										7,665
Less: Series A Preferred Stock dividends paid										0
Net income attributable to Ares Management Corporation Class A common stockholders										7,665
ASC 606 | Balances without adoption of ASC 606
Other income (expense)
Income before taxes										205,368
Income tax expense (benefit)										34,677
Net income										170,691
Net income attributable to Ares Management Corporation										64,685
Less: Series A Preferred Stock dividends paid										21,700
Net income attributable to Ares Management Corporation Class A common stockholders										42,985
ASC 606 | Consolidated Funds | Adjustments
Other income (expense)
Expenses of Consolidated Funds										0
Income before taxes of non-controlling interests in Consolidated Funds, net of eliminations										(1,921)
ASC 606 | Consolidated Funds | Balances without adoption of ASC 606
Other income (expense)
Expenses of Consolidated Funds										53,764
Income before taxes of non-controlling interests in Consolidated Funds, net of eliminations										18,591
ASC 606 | AOG | Adjustments
Other income (expense)
Income before taxes of non-controlling interests in Consolidated Funds, net of eliminations										12,808
ASC 606 | AOG | Balances without adoption of ASC 606
Other income (expense)
Income before taxes of non-controlling interests in Consolidated Funds, net of eliminations										87,415
ASC 606 | Ares Management L.P | Adjustments
Revenues
Total revenues										20,997
Other income (expense)
Expenses										0
Other income (expense), net										30
Total segment realized net investment income										30
ASC 606 | Ares Management L.P | Balances without adoption of ASC 606
Revenues
Total revenues										979,458
Other income (expense)
Expenses										870,362
Other income (expense), net										(821)
Total segment realized net investment income										96,272
Performance income | Ares Management L.P
Revenues
Total revenues											0
Performance income | Accounting Standards Update 2016-07 | As Previously Reported | Ares Management L.P
Revenues
Total revenues											636,674
Performance income | Accounting Standards Update 2016-07 | Adjustments | Ares Management L.P
Revenues
Total revenues											(636,674)
Carried interest allocation
Revenues
Total revenues									621,872
Carried interest allocation | Ares Management L.P
Revenues
Total revenues									621,872	42,410	620,454
Carried interest allocation | Accounting Standards Update 2016-07 | As Previously Reported | Ares Management L.P
Revenues
Total revenues											0
Carried interest allocation | Accounting Standards Update 2016-07 | Adjustments | Ares Management L.P
Revenues
Total revenues											620,454
Incentive fees | Ares Management L.P
Revenues
Total revenues									69,197	63,380	16,220
Incentive fees | Accounting Standards Update 2016-07 | As Previously Reported | Ares Management L.P
Revenues
Total revenues											0
Incentive fees | Accounting Standards Update 2016-07 | Adjustments | Ares Management L.P
Revenues
Total revenues											16,220
Incentive fees | ASC 606 | Ares Management L.P | Adjustments
Revenues
Total revenues										20,997
Incentive fees | ASC 606 | Ares Management L.P | Balances without adoption of ASC 606
Revenues
Total revenues										84,377
Principal investment income (loss) | Ares Management L.P
Revenues
Total revenues									$ 56,555	$ (1,455)	64,444
Principal investment income (loss) | Accounting Standards Update 2016-07 | As Previously Reported | Ares Management L.P
Revenues
Total revenues											0
Principal investment income (loss) | Accounting Standards Update 2016-07 | Adjustments | Ares Management L.P
Revenues
Total revenues											$ 64,444