SEGMENT REPORTING (Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	$ 81,959	$ 369,107
Equity compensation expense	32,557	27,552
Operating segment
Segment Reporting, Other Significant Reconciling Item [Line Items]
Transaction support expense	3,137	1,773
Equity compensation expense	32,557	27,552
Deferred placement fees	5,415	521
Depreciation and amortization expense	5,542	5,824
Operating segment \| Ares Management L.P
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	244,808	160,739
Performance related compensation-unrealized	285,892	(107,303)
Operating segment \| Consolidated Funds
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	81,959	369,107
Reconciling items
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	162,849	(208,368)
Administrative fees	(9,661)	(6,602)
Transaction support expense	(3,115)	(1,773)
Equity compensation expense	(32,557)	(27,552)
Deferred placement fees	(5,415)	(521)
Depreciation and amortization expense	(5,542)	(5,824)
Reconciling items \| Non-Controlling interest \| Subsidiaries
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	(1,579)	(946)
Reconciling items \| Consolidated Funds
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses of Consolidated Funds added in consolidation	(17,899)	(13,401)
Expenses of Consolidated Funds eliminated in consolidation	10,456	8,847
OMG
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	$ 57,731	$ 53,293

Represents the amount of expenses added in consolidation during the period.

No definition available.

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Balance Type:	debit
Period Type:	duration

- Definition

Represents the amount of expenses eliminated in consolidation during the period.

+ References

No definition available.

+ Details

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- Definition

Represents the amount of compensation expense unrealized by the entity based on the investment results achieved.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

For segment reporting, the amount of other fee revenue net of certain expenses.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ 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)
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Balance Type:	debit
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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460

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- Definition

Expense related to distribution, servicing and underwriting fees.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.14)
-URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260

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- Definition

Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

+ References

No definition available.

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- Definition

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.

+ References

No definition available.

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