SEGMENT REPORTING (Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	$ 206,283	$ 491,467
Equity compensation expenses	21,087	15,089
Ares Management L.P
Segment Reporting, Other Significant Reconciling Item [Line Items]
Acquisition and merger-related expenses	0	275,177
Operating segment
Segment Reporting, Other Significant Reconciling Item [Line Items]
Acquisition and merger-related expenses	(319)	255,088
Equity compensation expenses	21,087	15,089
Placement fees and underwriting costs	1,664	3,439
Amortization of intangibles	3,287	5,275
Depreciation expense	3,889	3,216
Operating segment \| Ares Management L.P
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	119,098	130,329
Reconciling items
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	87,185	361,138
Administrative fees	6,412	9,606
Acquisition and merger-related expenses	(319)	275,336
Equity compensation expenses	21,087	15,089
Placement fees and underwriting costs	1,664	3,439
Amortization of intangibles	3,287	5,275
Depreciation expense	3,889	3,216
Reconciling items \| Non-Controlling interest \| Subsidiaries
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	627	0
Reconciling items \| Consolidated Funds
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	8,629	10,509
Eliminations
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	(7,313)	(6,598)
Eliminations \| Consolidated Funds
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	(7,313)	(6,598)
OMG
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	$ 49,222	$ 45,266

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

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 2
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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Expense related to distribution, servicing and underwriting fees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.14)
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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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