The daily average ownership percentage.

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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- Definition

The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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- Definition

The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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- Definition

Balance held at close of period in number of shares.

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

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- Definition

The number of each class of partnership units outstanding at the balance sheet date. Units represent shares of ownership of the general, limited, and preferred partners.

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- Definition

The cash outflow for cost incurred directly with the issuance of an equity security.

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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

+ References

No definition available.

+ Details

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The price per share at which the preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of this preferred stock are solely within the control of the issuer.

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- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

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- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

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EQUITY (Details) - USD ($)		1 Months Ended	3 Months Ended			9 Months Ended
EQUITY (Details) - USD ($)	Mar. 12, 2018	Apr. 30, 2018	Sep. 30, 2018	Mar. 31, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jul. 31, 2018	Dec. 31, 2017
STOCKHOLDERS' EQUITY AND MEMBERS' CAPITAL
AOG Units (in units)			218,536,676			218,536,676			212,356,696
Direct Ownership Interest			100.00%			100.00%			100.00%
Dividend rate, percentage						7.00%
Redemption price (dollars per unit)			$ 25.00			$ 25.00
Preferred Shares
STOCKHOLDERS' EQUITY AND MEMBERS' CAPITAL
Authorized amount in preferred share buyback								$ 50,000,000.0
Preferred Equity
STOCKHOLDERS' EQUITY AND MEMBERS' CAPITAL
Issuance of common shares (in shares)			12,400,000			12,400,000			12,400,000
Ares Management, L.P.
STOCKHOLDERS' EQUITY AND MEMBERS' CAPITAL
AOG Units (in units)			101,489,282			101,489,282			82,280,033
Direct Ownership Interest			46.44%			46.44%			38.75%
Daily Average Ownership			45.17%		38.69%	43.42%	38.54%
Ares Management L.P \| Affiliate of Alleghany Corporation
STOCKHOLDERS' EQUITY AND MEMBERS' CAPITAL
Shares issued (in shares)				9,750,000		2,750,000
Ares Management, L.P. \| Affiliate of Alleghany Corporation
STOCKHOLDERS' EQUITY AND MEMBERS' CAPITAL
Shares converted (in shares)				9,750,000		2,750,000
Ares Owners Holding L.P.
STOCKHOLDERS' EQUITY AND MEMBERS' CAPITAL
AOG Units (in units)			117,047,394			117,047,394			117,576,663
Direct Ownership Interest			53.56%			53.56%			55.36%
Daily Average Ownership			53.67%		55.42%	54.14%	55.56%
Affiliate of Alleghany Corporation
STOCKHOLDERS' EQUITY AND MEMBERS' CAPITAL
AOG Units (in units)			0			0			12,500,000
Direct Ownership Interest			0.00%			0.00%			5.89%
Daily Average Ownership			1.16%		5.89%	2.44%	5.90%
Secondary Offering
STOCKHOLDERS' EQUITY AND MEMBERS' CAPITAL
Number of units sold (in units)	15,000,000
Fees related to secondary offering	$ 500,000
Secondary Offering \| Ares Management L.P
STOCKHOLDERS' EQUITY AND MEMBERS' CAPITAL
Number of units sold (in units)	5,000,000
Proceeds from sale of equity	$ 105,900,000
Secondary Offering \| ADIA
STOCKHOLDERS' EQUITY AND MEMBERS' CAPITAL
Number of units sold (in units)	10,000,000
Proceeds from sale of equity	$ 0
Underwriting \| Ares Management L.P
STOCKHOLDERS' EQUITY AND MEMBERS' CAPITAL
Number of units sold (in units)		1,130,000