DERIVATIVE FINANCIAL INSTRUMENTS (Net Realized Gain/Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Consolidated Funds \| Investment Income
DERIVATIVE FINANCIAL INSTRUMENTS
Net realized gains (losses) on derivatives	$ (1,189)	$ (699)	$ 722
Consolidated Funds \| Net Change In Unrealized Appreciation Depreciation On Investments
DERIVATIVE FINANCIAL INSTRUMENTS
Net realized gains (losses) on derivatives	(4,771)	(168)	1,809
Consolidated Funds \| Derivatives-foreign exchange contracts \| Foreign currency forward contracts \| Investment Income
DERIVATIVE FINANCIAL INSTRUMENTS
Net realized gains (losses) on derivatives	8	96	(181)
Net realized gains (losses) on derivatives	(20)	15	(529)
Consolidated Funds \| Asset swaps-other \| Asset swap - other \| Investment Income
DERIVATIVE FINANCIAL INSTRUMENTS
Net realized gains (losses) on derivatives	(1,197)	(795)	903
Net realized gains (losses) on derivatives	(4,751)	(183)	2,338
Ares Management L.P \| Investment Income
DERIVATIVE FINANCIAL INSTRUMENTS
Net realized gains (losses) on derivatives	2,284	(1,197)	(1,830)
Ares Management L.P \| Net Change In Unrealized Appreciation Depreciation On Investments
DERIVATIVE FINANCIAL INSTRUMENTS
Net realized gains (losses) on derivatives	3,713	2,338	(5,299)
Ares Management L.P \| Derivatives-foreign exchange contracts \| Foreign currency forward contracts \| Investment Income
DERIVATIVE FINANCIAL INSTRUMENTS
Net realized gains (losses) on derivatives	2,284	(1,197)	(1,830)
Ares Management L.P \| Derivatives-foreign exchange contracts \| Foreign currency forward contracts \| Net Change In Unrealized Appreciation Depreciation On Investments
DERIVATIVE FINANCIAL INSTRUMENTS
Net realized gains (losses) on derivatives	$ 3,713	$ 2,338	$ (5,299)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

+ Details

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The net realized gains or losses on investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.3(a))
-URI http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263

+ Details

Name:	us-gaap_RealizedInvestmentGainsLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of open derivatives, commodity, or energy contracts, held at each balance sheet date, that was included in earnings for the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

+ Details

Name:	us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	dei_LegalEntityAxis=ares_ConsolidatedFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_InvestmentIncomeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=ares_NetChangeInUnrealizedAppreciationDepreciationOnInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ares_DerivativeInstrumentSecondaryCategorizationAxis=ares_ForeignCurrencyForwardContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_OtherContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ares_DerivativeInstrumentSecondaryCategorizationAxis=us-gaap_SwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ConsolidatedEntitiesAxis=srt_ParentCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: