CONSOLIDATION (Cash Flow Statement) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019
Cash flows from operating activities:
Net income (loss)	$ (275,797)	$ 84,475	$ 91,875	$ 74,878	$ 121,576
Net cash used in operating activities	(363,237)				(349,846)
Cash flows from investing activities:
Net cash used in investing activities	(38,906)				(2,994)
Allocable to non-controlling interests in Consolidated Funds:
Net cash provided by financing activities	1,445,552				353,331
Effect of exchange rate changes	(14,120)				9,760
Net change in cash and cash equivalents	1,029,289				10,251
Cash and cash equivalents, beginning of period	138,384			120,498
Cash and cash equivalents, end of period	1,167,673	138,384			120,498
Reportable legal entity
Cash flows from operating activities:
Net income (loss)	(216,172)				103,952
Net cash used in operating activities	(595,595)				29,250
Cash flows from investing activities:
Purchase of furniture, equipment and leasehold improvements, net					(2,994)
Net cash used in investing activities					(2,994)
Allocable to non-controlling interests in Consolidated Funds:
Net cash provided by financing activities					(14,885)
Effect of exchange rate changes					(1,120)
Net change in cash and cash equivalents					10,251
Cash and cash equivalents, beginning of period				120,498	110,247
Cash and cash equivalents, end of period					120,498
Eliminations
Cash flows from operating activities:
Net income (loss)	49,766				(761)
Net cash used in operating activities	104,993				(64,907)
Allocable to non-controlling interests in Consolidated Funds:
Net cash provided by financing activities	(13,071)				(88,396)
Effect of exchange rate changes	0				0
Net change in cash and cash equivalents	91,922				(153,303)
Cash and cash equivalents, beginning of period	(606,321)			(537,947)	(384,644)
Cash and cash equivalents, end of period	(514,399)	(606,321)			(537,947)
Consolidated Funds
Cash flows from operating activities:
Adjustments to reconcile net income (loss) to net cash used in operating activities	(453,015)				(416,457)
Cash flows due to changes in operating assets and liabilities	188,510				(69,268)
Allocable to non-controlling interests in Consolidated Funds:
Contributions from non-controlling interests in Consolidated Funds	133,265				54,035
Distributions to non-controlling interests in Consolidated Funds	(13,492)				(20,736)
Borrowings under loan obligations by Consolidated Funds	454,391				396,144
Repayments under loan obligations by Consolidated Funds	(73,609)				(61,227)
Consolidated Funds | Reportable legal entity
Cash flows from operating activities:
Net income (loss)	(216,172)				18,385
Adjustments to reconcile net income (loss) to net cash used in operating activities	(478,695)				(415,841)
Cash flows due to changes in operating assets and liabilities	99,272				83,267
Net cash used in operating activities					(314,189)
Allocable to non-controlling interests in Consolidated Funds:
Contributions from non-controlling interests in Consolidated Funds	148,270				148,691
Distributions to non-controlling interests in Consolidated Funds	(15,426)				(23,629)
Borrowings under loan obligations by Consolidated Funds	454,391				392,777
Repayments under loan obligations by Consolidated Funds	(73,609)				(61,227)
Net cash provided by financing activities	513,626				456,612
Effect of exchange rate changes	(9,953)				10,880
Net change in cash and cash equivalents	(91,922)				153,303
Cash and cash equivalents, beginning of period	606,321			537,947	384,644
Cash and cash equivalents, end of period	514,399	606,321			537,947
Consolidated Funds | Eliminations
Cash flows from operating activities:
Adjustments to reconcile net income (loss) to net cash used in operating activities	25,680				(616)
Cash flows due to changes in operating assets and liabilities	89,238				(152,535)
Allocable to non-controlling interests in Consolidated Funds:
Contributions from non-controlling interests in Consolidated Funds	(15,005)				(94,656)
Distributions to non-controlling interests in Consolidated Funds	1,934				2,893
Borrowings under loan obligations by Consolidated Funds					3,367
Repayments under loan obligations by Consolidated Funds					0
Ares Management L.P
Cash flows from operating activities:
Adjustments to reconcile net income (loss) to net cash used in operating activities	125,070				10,766
Cash flows due to changes in operating assets and liabilities	51,995				3,537
Cash flows from investing activities:
Purchase of furniture, equipment and leasehold improvements, net	(3,062)				(2,994)
Acquisitions	(35,844)				0
Cash flows from financing activities:
Net proceeds from issuance of Class A common stock	383,334				0
Proceeds from credit facility	790,000				145,000
Repayments of credit facility	(60,000)				(60,000)
Dividends and distributions	(106,838)				(75,479)
Series A Preferred Stock dividends and distributions	(5,425)				(5,425)
Stock option exercises	19,551				0
Taxes paid related to net share settlement of equity awards	(73,500)				(21,121)
Other financing activities	(2,125)				2,140
Allocable to non-controlling interests in Consolidated Funds:
Cash and cash equivalents, beginning of period				$ 120,498	110,247
Cash and cash equivalents, end of period					120,498
Ares Management L.P | Reportable legal entity
Cash flows from operating activities:
Net income (loss)	(109,391)				103,952
Adjustments to reconcile net income (loss) to net cash used in operating activities	190,761				(79,008)
Cash flows due to changes in operating assets and liabilities	45,995				4,306
Net cash used in operating activities	127,365
Cash flows from investing activities:
Purchase of furniture, equipment and leasehold improvements, net	(3,062)
Acquisitions	(35,844)
Net cash used in investing activities	(38,906)
Cash flows from financing activities:
Net proceeds from issuance of Class A common stock	383,334
Proceeds from credit facility	790,000				145,000
Repayments of credit facility	(60,000)				(60,000)
Dividends and distributions	106,838				(75,479)
Series A Preferred Stock dividends and distributions	(5,425)				(5,425)
Stock option exercises	19,551
Taxes paid related to net share settlement of equity awards	(73,500)				(21,121)
Other financing activities	(2,125)				2,140
Allocable to non-controlling interests in Consolidated Funds:
Net cash provided by financing activities	944,997
Effect of exchange rate changes	(4,167)
Net change in cash and cash equivalents	1,029,289
Cash and cash equivalents, beginning of period	138,384
Cash and cash equivalents, end of period	1,167,673	$ 138,384
Ares Management L.P | Eliminations
Cash flows from operating activities:
Adjustments to reconcile net income (loss) to net cash used in operating activities	(65,691)				89,774
Cash flows due to changes in operating assets and liabilities	$ 6,000				$ (769)