CONSOLIDATION (Cash Flow Statement) (Details) - USD ($) $ in Thousands	3 Months Ended						6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net income (loss)	$ 216,676	$ (275,797)	$ 84,475	$ 91,875	$ 74,878	$ 121,576	$ (59,121)	$ 196,454
Net cash used in operating activities							(150,839)	(1,291,312)
Cash flows from investing activities:
Net cash used in investing activities							(43,924)	(5,653)
Allocable to non-controlling interests in Consolidated Funds:
Net cash provided by financing activities							962,230	1,445,125
Effect of exchange rate changes							(15,811)	(11,187)
Net change in cash and cash equivalents							751,656	136,973
Cash and cash equivalents, beginning of period		138,384		247,220			138,384
Cash and cash equivalents, end of period	890,040		138,384		247,220		890,040	247,220
Reportable legal entity
Cash flows from operating activities:
Net income (loss)							(121,381)	170,484
Net cash used in operating activities							(822,410)	195,046
Cash flows from investing activities:
Purchase of furniture, equipment and leasehold improvements, net								(5,653)
Net cash used in investing activities								(5,653)
Allocable to non-controlling interests in Consolidated Funds:
Net cash provided by financing activities								(44,551)
Effect of exchange rate changes								(7,869)
Net change in cash and cash equivalents								136,973
Cash and cash equivalents, beginning of period				247,220		110,247		110,247
Cash and cash equivalents, end of period					247,220			247,220
Eliminations
Cash flows from operating activities:
Net income (loss)	(9,605)				3,983		40,161	3,222
Net cash used in operating activities							340,500	106,893
Allocable to non-controlling interests in Consolidated Funds:
Net cash provided by financing activities							7,421	(98,577)
Effect of exchange rate changes							0	0
Net change in cash and cash equivalents							347,921	8,316
Cash and cash equivalents, beginning of period		(606,321)		(376,328)		(384,644)	(606,321)	(384,644)
Cash and cash equivalents, end of period	(258,400)		(606,321)		(376,328)		(258,400)	(376,328)
Consolidated Funds
Cash flows from operating activities:
Adjustments to reconcile net income (loss) to net cash used in operating activities							(496,873)	(1,360,106)
Cash flows due to changes in operating assets and liabilities							161,345	(162,950)
Allocable to non-controlling interests in Consolidated Funds:
Contributions from non-controlling interests in Consolidated Funds							123,695	115,499
Distributions to non-controlling interests in Consolidated Funds							(150,329)	(30,955)
Borrowings under loan obligations by Consolidated Funds							608,355	1,934,087
Repayments under loan obligations by Consolidated Funds							(87,689)	(528,955)
Consolidated Funds | Reportable legal entity
Cash flows from operating activities:
Net income (loss)	94,791				4,363		(121,381)	22,748
Adjustments to reconcile net income (loss) to net cash used in operating activities							(510,528)	(1,444,622)
Cash flows due to changes in operating assets and liabilities							(190,501)	(171,377)
Net cash used in operating activities								(1,593,251)
Allocable to non-controlling interests in Consolidated Funds:
Contributions from non-controlling interests in Consolidated Funds							138,700	223,520
Distributions to non-controlling interests in Consolidated Funds							(172,755)	(35,149)
Borrowings under loan obligations by Consolidated Funds							608,355	1,938,858
Repayments under loan obligations by Consolidated Funds							(87,689)	(538,976)
Net cash provided by financing activities							486,611	1,588,253
Effect of exchange rate changes							(12,122)	(3,318)
Net change in cash and cash equivalents							(347,921)	(8,316)
Cash and cash equivalents, beginning of period		606,321		376,328		384,644	606,321	384,644
Cash and cash equivalents, end of period	258,400		606,321		376,328		258,400	376,328
Consolidated Funds | Eliminations
Cash flows from operating activities:
Adjustments to reconcile net income (loss) to net cash used in operating activities							13,655	84,516
Cash flows due to changes in operating assets and liabilities							351,846	8,427
Allocable to non-controlling interests in Consolidated Funds:
Contributions from non-controlling interests in Consolidated Funds							(15,005)	(108,021)
Distributions to non-controlling interests in Consolidated Funds							22,426	4,194
Borrowings under loan obligations by Consolidated Funds								(4,771)
Repayments under loan obligations by Consolidated Funds								10,021
Ares Management L.P
Cash flows from operating activities:
Adjustments to reconcile net income (loss) to net cash used in operating activities							128,836	48,114
Cash flows due to changes in operating assets and liabilities							114,974	(12,824)
Cash flows from investing activities:
Purchase of furniture, equipment and leasehold improvements, net							(8,080)	(5,653)
Acquisitions		(35,800)					(35,844)	0
Cash flows from financing activities:
Net proceeds from issuance of Class A common stock							383,154	0
Proceeds from credit facility							790,000	235,000
Proceeds from senior notes							399,084	0
Repayments of credit facility							(860,000)	(150,000)
Dividends and distributions							(224,407)	(152,364)
Series A Preferred Stock dividends							(10,850)	(10,850)
Repurchases of Class A common stock							0	(10,449)
Stock option exercises							67,441	78,794
Taxes paid related to net share settlement of equity awards							(74,335)	(31,424)
Other financing activities							(1,889)	(3,258)
Allocable to non-controlling interests in Consolidated Funds:
Cash and cash equivalents, beginning of period		138,384		$ 247,220		$ 110,247	138,384	110,247
Cash and cash equivalents, end of period	890,040		138,384		247,220		890,040	247,220
Ares Management L.P | Reportable legal entity
Cash flows from operating activities:
Net income (loss)	131,490				$ 66,532		22,099	170,484
Adjustments to reconcile net income (loss) to net cash used in operating activities							197,873	37,274
Cash flows due to changes in operating assets and liabilities							111,099	(12,712)
Net cash used in operating activities							331,071
Cash flows from investing activities:
Purchase of furniture, equipment and leasehold improvements, net							(8,080)
Acquisitions							(35,844)
Net cash used in investing activities							(43,924)
Cash flows from financing activities:
Net proceeds from issuance of Class A common stock							383,154
Proceeds from credit facility							790,000	235,000
Proceeds from senior notes							399,084
Repayments of credit facility							(860,000)	(150,000)
Dividends and distributions							(224,407)	(152,364)
Series A Preferred Stock dividends							(10,850)	(10,850)
Repurchases of Class A common stock								(10,449)
Stock option exercises							67,441	78,794
Taxes paid related to net share settlement of equity awards							(74,335)	(31,424)
Other financing activities							(1,889)	(3,258)
Allocable to non-controlling interests in Consolidated Funds:
Net cash provided by financing activities							468,198
Effect of exchange rate changes							(3,689)
Net change in cash and cash equivalents							751,656
Cash and cash equivalents, beginning of period		$ 138,384					138,384
Cash and cash equivalents, end of period	$ 890,040		$ 138,384				890,040
Ares Management L.P | Eliminations
Cash flows from operating activities:
Adjustments to reconcile net income (loss) to net cash used in operating activities							(69,037)	10,840
Cash flows due to changes in operating assets and liabilities							$ 3,875	$ (112)