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

Balance held at close of period in number of shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-12C.Column B)
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- Definition

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

+ References

No definition available.

+ Details

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- Definition

The number of units sold in a public offering of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585

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Balance Type:	credit
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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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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
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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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- Details

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- Details

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EQUITY (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended	12 Months Ended
	Mar. 02, 2017	Mar. 31, 2017	Dec. 31, 2016
STOCKHOLDERS' EQUITY AND MEMBERS' CAPITAL
AOG Units (in units)		211,596,016
Direct Ownership Interest		100.00%
Dividend rate, percentage		7.00%
Redemption price (dollars per unit)		$ 25.00
Fees related to secondary offering	$ 0.7
Preferred Equity
STOCKHOLDERS' EQUITY AND MEMBERS' CAPITAL
Issuance of common units (in units)		12,400,000	12,400,000
Ares Owners Holdings, L.P.
STOCKHOLDERS' EQUITY AND MEMBERS' CAPITAL
AOG Units (in units)		117,777,477
Direct Ownership Interest		55.66%
Daily Average Ownership		55.74%
Alleghany
STOCKHOLDERS' EQUITY AND MEMBERS' CAPITAL
AOG Units (in units)		12,500,000
Direct Ownership Interest		5.91%
Daily Average Ownership		5.91%
ADIA
STOCKHOLDERS' EQUITY AND MEMBERS' CAPITAL
Number of units sold (in units)	7,500,000
AOG
STOCKHOLDERS' EQUITY AND MEMBERS' CAPITAL
AOG Units (in units)		81,318,539
Direct Ownership Interest		38.43%
Daily Average Ownership		38.35%