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

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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.

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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.

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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.

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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.

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Amount of payable due to an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

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Expense related to distribution, servicing and underwriting fees.

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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.

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No definition available.

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Amount of expense classified as other.

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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.

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No definition available.

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SEGMENT REPORTING (Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	$ 221,017	$ 448,197	$ 427,300	$ 939,664
Equity compensation expenses	22,507	18,917	43,594	34,006
Ares Management L.P
Segment Reporting, Other Significant Reconciling Item [Line Items]
Acquisition and merger-related expenses	0	0	0	275,177
Due to affiliates	62,344		62,344			$ 39,184
Ares Management L.P \| Affiliated entity \| ARCC \| Rent and other occupancy expenses
Segment Reporting, Other Significant Reconciling Item [Line Items]
Due to affiliates	11,800		11,800		$ 600	2,200	$ 3,000	$ 3,200	$ 2,900
Consolidated Funds
Segment Reporting, Other Significant Reconciling Item [Line Items]
Due to affiliates	0		0			0
Operating segment
Segment Reporting, Other Significant Reconciling Item [Line Items]
Acquisition and merger-related expenses	47	756	(272)	255,844
Equity compensation expenses	22,507	18,917	43,594	34,006
Placement fees and underwriting costs	1,852	6,383	3,516	9,822
Amortization of intangibles	3,285	5,274	6,572	10,549
Depreciation expense	4,426	2,774	8,315	5,990
Operating segment \| Ares Management L.P
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	83,934	350,451	203,032	480,780
Reconciling items
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	137,083	97,746	224,268	458,884
Administrative fees	6,770	9,132	13,182	18,738
Acquisition and merger-related expenses	47	724	(272)	276,060
Equity compensation expenses	22,507	18,917	43,594	34,006
Placement fees and underwriting costs	1,852	6,383	3,516	9,822
Amortization of intangibles	3,285	5,274	6,572	10,549
Depreciation expense	4,426	2,774	8,315	5,990
Other expenses	11,836	0	11,836	0
Reconciling items \| Non-Controlling interest \| Subsidiaries
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	700	574	1,327	574
Reconciling items \| Consolidated Funds
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	47,382	8,825	56,011	19,334
Eliminations
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	(12,270)	(4,303)	(19,583)	(10,901)
Acquisition and merger-related expenses				0
Eliminations \| Ares Management L.P
Segment Reporting, Other Significant Reconciling Item [Line Items]
Due to affiliates	0		0
Eliminations \| Consolidated Funds
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	(12,270)	(4,303)	(19,583)	(10,901)
Due to affiliates	(6,772)		(6,772)			$ (11,285)
OMG
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenses	$ 50,548	$ 49,446	$ 99,770	$ 94,712