CONSOLIDATION (Balance Sheet) (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Nov. 26, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets
Investments, at fair value				$ 1,724,571
Other assets				130,341
Total assets	$ 12,014,196	$ 10,154,692		8,563,522
Liabilities
Operating lease liabilities	168,817
Total liabilities	10,155,598	8,760,351		7,103,230
Commitments and contingencies
Stockholders' Equity
Series A Preferred Stock, $0.01 par value, 1,000,000,000 shares authorized (12,400,000 shares issued and outstanding at December 31, 2019 and 2018, respectively)	298,761	298,761
Additional paid-in-capital	525,244	326,007
Retained earnings	(50,820)	(29,336)
Accumulated other comprehensive loss, net of tax	(6,047)	(8,524)
Total stockholders' equity	768,290	587,924		1,460,292
Total equity	1,858,598	1,394,341		1,460,292	$ 1,377,262
Total liabilities, non-controlling interests and equity	$ 12,014,196	$ 10,154,692		$ 8,563,522
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Preferred stock, shares issued (in shares)	12,400,000	12,400,000
Preferred stock, shares outstanding (in shares)	12,400,000	12,400,000
Common stock, shares outstanding (in shares)	115,243,029	101,595,096
Class A common stock
Stockholders' Equity
Common stock	$ 1,152	$ 1,016
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,500,000,000	1,500,000,000
Common stock, shares issued (in shares)	115,242,028	101,594,095
Common stock, shares outstanding (in shares)	115,242,028	101,594,095
Class B common stock
Stockholders' Equity
Common stock	$ 0	$ 0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000	1,000
Common stock, shares issued (in shares)	1,000	1,000	1,000
Common stock, shares outstanding (in shares)	1,000	1,000
Class C common stock
Stockholders' Equity
Common stock	$ 0	$ 0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	499,999,000	499,999,000
Common stock, shares issued (in shares)	1	1
Common stock, shares outstanding (in shares)	1	1
Reportable legal entity
Liabilities
Operating lease liabilities	$ 168,817
Stockholders' Equity
Series A Preferred Stock, $0.01 par value, 1,000,000,000 shares authorized (12,400,000 shares issued and outstanding at December 31, 2019 and 2018, respectively)	298,761	$ 298,761
Eliminations
Assets
Total assets	(193,557)	(195,002)
Liabilities
Total liabilities	(36,874)	(36,742)
Commitments and contingencies
Stockholders' Equity
Series A Preferred Stock, $0.01 par value, 1,000,000,000 shares authorized (12,400,000 shares issued and outstanding at December 31, 2019 and 2018, respectively)	0	0
Total equity	(156,683)	(158,260)
Total liabilities, non-controlling interests and equity	(193,557)	(195,002)
Consolidated Funds
Assets
Cash and cash equivalents	606,321	384,644
Investments, at fair value	8,727,947	7,673,165
Due from affiliates	6,192	17,609
Other assets	30,081	23,786
Receivable for securities sold	88,809	42,076
Liabilities
Accounts payable, accrued expenses and other liabilities	61,857	83,876
Due to affiliates	0	0
Payable for securities purchased	500,146	471,390
CLO loan obligations, at fair value	7,973,748	6,678,091
Fund borrowings	107,244	209,284
Non-controlling interest in Consolidated Funds	618,020	503,637
Consolidated Funds | Reportable legal entity
Assets
Cash and cash equivalents	606,321	384,644
Investments, at fair value	8,723,169	7,673,165
Due from affiliates	6,192	17,609
Other assets	30,081	23,786
Receivable for securities sold	88,809	42,076
Total assets	9,454,572	8,141,280
Liabilities
Accounts payable, accrued expenses and other liabilities	61,857	83,876
Due to affiliates	11,700	8,547
Payable for securities purchased	500,146	471,390
CLO loan obligations, at fair value	7,998,922	6,706,286
Fund borrowings	107,244	209,284
Total liabilities	8,679,869	7,479,383
Commitments and contingencies
Non-controlling interest in Consolidated Funds	774,703	661,897
Stockholders' Equity
Total equity	774,703	661,897
Total liabilities, non-controlling interests and equity	9,454,572	8,141,280
Consolidated Funds | Eliminations
Assets
Cash and cash equivalents	0	0
Investments, at fair value	4,778	0
Due from affiliates	0	0
Other assets	0	0
Receivable for securities sold	0	0
Liabilities
Accounts payable, accrued expenses and other liabilities	0	0
Due to affiliates	(11,700)	(8,547)
Payable for securities purchased	0	0
CLO loan obligations, at fair value	(25,174)	(28,195)
Fund borrowings	0	0
Non-controlling interest in Consolidated Funds	(156,683)	(158,260)
AOG
Liabilities
Non-controlling interest in Ares Operating Group entities	472,288	302,780
AOG | Reportable legal entity
Liabilities
Non-controlling interest in Ares Operating Group entities	472,288	302,780
AOG | Eliminations
Liabilities
Non-controlling interest in Ares Operating Group entities	0	0
Ares Management L.P
Assets
Cash and cash equivalents	138,384	110,247
Investments, at fair value	1,663,664	1,326,137
Due from affiliates	268,099	199,377
Other assets	341,293	377,651
Right-of-use operating lease assets	143,406
Liabilities
Accounts payable, accrued expenses and other liabilities	88,173	83,221
Accrued compensation	37,795	29,389
Due to affiliates	71,445	82,411
Performance related compensation payable	829,764	641,737
Debt obligations	316,609	480,952
Operating lease liabilities	168,817
Stockholders' Equity
Additional paid-in-capital	525,244	326,007
Retained earnings	(50,820)	(29,336)
Accumulated other comprehensive loss, net of tax	(6,047)	(8,524)
Total stockholders' equity	768,290	587,924
Ares Management L.P | Class A common stock
Stockholders' Equity
Common stock	1,152	1,016
Ares Management L.P | Class B common stock
Stockholders' Equity
Common stock	0	0
Ares Management L.P | Class C common stock
Stockholders' Equity
Common stock	0	0
Ares Management L.P | Accrued Interest
Assets
Investments, at fair value	1,134,967	841,079
Ares Management L.P | Reportable legal entity
Assets
Cash and cash equivalents	138,384	110,247
Investments, at fair value	1,845,520	1,512,592
Due from affiliates	282,197	207,924
Other assets	343,674	377,651
Right-of-use operating lease assets	143,406
Total assets	2,753,181	2,208,414
Liabilities
Accounts payable, accrued expenses and other liabilities	88,173	83,221
Accrued compensation	37,795	29,389
Due to affiliates	71,445	82,411
Performance related compensation payable	829,764	641,737
Debt obligations	316,609	480,952
Total liabilities	1,512,603	1,317,710
Commitments and contingencies
Stockholders' Equity
Additional paid-in-capital	525,244	326,007
Retained earnings	(50,820)	(29,336)
Accumulated other comprehensive loss, net of tax	(6,047)	(8,524)
Total stockholders' equity	768,290	587,924
Total equity	1,240,578	890,704
Total liabilities, non-controlling interests and equity	2,753,181	2,208,414
Ares Management L.P | Reportable legal entity | Class A common stock
Stockholders' Equity
Common stock	1,152	1,016
Ares Management L.P | Reportable legal entity | Class B common stock
Stockholders' Equity
Common stock		0
Ares Management L.P | Reportable legal entity | Class C common stock
Stockholders' Equity
Common stock		0
Ares Management L.P | Eliminations
Assets
Cash and cash equivalents	0	0
Investments, at fair value	(181,856)	(186,455)
Due from affiliates	(14,098)	(8,547)
Other assets	(2,381)	0
Liabilities
Accounts payable, accrued expenses and other liabilities	0	0
Accrued compensation	0	0
Due to affiliates	0	0
Performance related compensation payable	0	0
Debt obligations	0	0
Stockholders' Equity
Accumulated other comprehensive loss, net of tax	0	0
Total stockholders' equity	0	0
Ares Management L.P | Eliminations  | Class A common stock
Stockholders' Equity
Common stock	$ 0	$ 0