CONSOLIDATION (Balance Sheet) (Details) - USD ($) $ / shares in Units, $ in Thousands	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Assets
Total assets	$ 13,719,957		$ 12,014,196
Liabilities
Operating lease liabilities	164,521
Total liabilities	11,716,209		10,155,598
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 June 30, 2020 and December 31, 2019)	298,761		298,761
Additional paid-in-capital	800,077		525,244
Retained earnings	(145,045)		(50,820)
Accumulated other comprehensive loss, net of tax	(11,237)		(6,047)
Total stockholders' equity	945,057		768,290
Total equity	2,003,748	$ 1,975,596	1,858,598	$ 1,842,782	$ 1,602,324	$ 1,479,824	$ 1,394,341
Total liabilities, non-controlling interests and equity	$ 13,719,957		$ 12,014,196
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)	250,135,347		115,243,029
Class A common stock
Stockholders' Equity
Common stock	$ 1,353		$ 1,152
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Common stock, shares authorized (in shares)	1,500,000,000		1,500,000,000
Common stock, shares issued (in shares)	135,335,943		115,242,028
Common stock, shares outstanding (in shares)	135,335,943		115,242,028
Class B common stock
Stockholders' Equity
Common stock	$ 0		$ 0
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Common stock, shares authorized (in shares)	1,000		1,000
Common stock, shares issued (in shares)	1,000		1,000
Common stock, shares outstanding (in shares)	1,000		1,000
Class C common stock
Stockholders' Equity
Common stock	$ 1,148		$ 0
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Common stock, shares authorized (in shares)	499,999,000		499,999,000
Common stock, shares issued (in shares)	114,798,404		1
Common stock, shares outstanding (in shares)	114,798,404		1
Eliminations
Assets
Total assets	$ (163,044)		$ (193,557)
Liabilities
Total liabilities	(55,036)		(36,874)
Commitments and contingencies
Stockholders' Equity
Total equity	(108,008)		(156,683)
Total liabilities, non-controlling interests and equity	(163,044)		(193,557)
Consolidated Funds
Assets
Cash and cash equivalents	258,400		606,321
Investments, at fair value	10,005,632		8,727,947
Due from affiliates	7,201		6,192
Other assets	35,642		30,081
Receivable for securities sold	276,692		88,809
Liabilities
Accounts payable, accrued expenses and other liabilities	60,975		61,857
Due to affiliates	0		0
Payable for securities purchased	449,169		500,146
CLO loan obligations, at fair value	9,228,687		7,973,748
Fund borrowings	167,037		107,244
Non-controlling interest in Consolidated Funds	506,201		618,020
Consolidated Funds | Reportable legal entity
Assets
Cash and cash equivalents	258,400		606,321
Investments, at fair value	9,997,178		8,723,169
Due from affiliates	7,201		6,192
Other assets	35,642		30,081
Receivable for securities sold	276,692		88,809
Total assets	10,575,113		9,454,572
Liabilities
Accounts payable, accrued expenses and other liabilities	60,975		61,857
Due to affiliates	11,900		11,700
Payable for securities purchased	449,169		500,146
CLO loan obligations, at fair value	9,271,823		7,998,922
Fund borrowings	167,037		107,244
Total liabilities	9,960,904		8,679,869
Commitments and contingencies
Non-controlling interest in Consolidated Funds	614,209		774,703
Stockholders' Equity
Total equity	614,209		774,703
Total liabilities, non-controlling interests and equity	10,575,113		9,454,572
Consolidated Funds | Eliminations
Assets
Cash and cash equivalents	0		0
Investments, at fair value	8,454		4,778
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	(11,900)		(11,700)
Payable for securities purchased	0		0
CLO loan obligations, at fair value	(43,136)		(25,174)
Fund borrowings	0		0
Non-controlling interest in Consolidated Funds	(108,008)		(156,683)
AOG
Liabilities
Non-controlling interest in Ares Operating Group entities	552,490		472,288
AOG | Reportable legal entity
Liabilities
Non-controlling interest in Ares Operating Group entities	552,490		472,288
AOG | Eliminations
Liabilities
Non-controlling interest in Ares Operating Group entities	0		0
Ares Management L.P
Assets
Cash and cash equivalents	890,040		138,384
Investments, at fair value	1,479,487		1,663,664
Due from affiliates	258,126		268,099
Other assets	368,696		341,293
Right-of-use operating lease assets	140,041		143,406
Liabilities
Accounts payable, accrued expenses and other liabilities	104,017		88,173
Accrued compensation	123,123		37,795
Due to affiliates	61,025		71,445
Performance related compensation payable	715,181		829,764
Debt obligations	642,474		316,609
Operating lease liabilities	164,521		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 June 30, 2020 and December 31, 2019)	298,761		298,761
Additional paid-in-capital	800,077		525,244
Retained earnings	(145,045)		(50,820)
Accumulated other comprehensive loss, net of tax	(11,237)		(6,047)
Total stockholders' equity	945,057		768,290
Ares Management L.P | Class A common stock
Stockholders' Equity
Common stock	1,353		1,152
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	1,148		0
Ares Management L.P | Reportable legal entity
Assets
Cash and cash equivalents	890,040		138,384
Investments, at fair value	1,630,631		1,845,520
Due from affiliates	278,480		282,197
Other assets	368,696		343,674
Right-of-use operating lease assets	140,041		143,406
Total assets	3,307,888		2,753,181
Liabilities
Accounts payable, accrued expenses and other liabilities	104,017		88,173
Accrued compensation	123,123		37,795
Due to affiliates	61,025		71,445
Performance related compensation payable	715,181		829,764
Debt obligations	642,474		316,609
Operating lease liabilities	164,521		168,817
Total liabilities	1,810,341		1,512,603
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 June 30, 2020 and December 31, 2019)	298,761		298,761
Additional paid-in-capital	800,077		525,244
Retained earnings	(145,045)		(50,820)
Accumulated other comprehensive loss, net of tax	(11,237)		(6,047)
Total stockholders' equity	945,057		768,290
Total equity	1,497,547		1,240,578
Total liabilities, non-controlling interests and equity	3,307,888		2,753,181
Ares Management L.P | Reportable legal entity | Class A common stock
Stockholders' Equity
Common stock	1,353		1,152
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	1,148		0
Ares Management L.P | Eliminations
Assets
Cash and cash equivalents	0		0
Investments, at fair value	(151,144)		(181,856)
Due from affiliates	(20,354)		(14,098)
Other assets	0		(2,381)
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
Series A Preferred Stock, $0.01 par value, 1,000,000,000 shares authorized (12,400,000 shares issued and outstanding at June 30, 2020 and December 31, 2019)	0		0
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