Maximum percent of awards as a percent of total outstanding.

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- Definition

Share based compensation arrangement by share based payment award equity instruments other than options maximum award opportunity percentage of equity market capitalization.

+ References

No definition available.

+ Details

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- Definition

Share based compensation arrangement by share based payment award equity instruments other than options maximum award opportunity amount.

+ References

No definition available.

+ Details

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- Definition

Share based compensation arrangement by share based payment award equity instruments other than options remaining award opportunity shares.

+ References

No definition available.

+ Details

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- Definition

Share based compensation arrangement by share based payment award periodic vesting percentage.

+ References

No definition available.

+ Details

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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.

+ Details

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

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Share-Based Compensation - Additional Information (Detail) - shares					3 Months Ended	12 Months Ended
	Apr. 15, 2017	Apr. 15, 2016	Apr. 15, 2015	Apr. 15, 2014	Mar. 31, 2018	Dec. 31, 2017	May 09, 2017
Performance Shares [Member] \| LTIP Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
OPP units issued				8,880,579
New Multi-Year Outperformance Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Company's market capitalization percentage				5.00%
One-Year Period [Member] \| Performance Shares [Member] \| New Multi-Year Outperformance Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted			367,059
Two-Year Period [Member] \| Performance Shares [Member] \| New Multi-Year Outperformance Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted		805,679
Liquidation Value [Member] \| Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized					50,000
Stock options issued					0	0
Liquidation Value [Member] \| Unvested Restricted Shares [Member] \| Restricted Share Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted					0
Liquidation Value [Member] \| Performance Shares [Member] \| LTIP Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of shares of common stock remaining units							7,664,156
Liquidation Value [Member] \| Three -Year Period [Member] \| Performance Shares [Member] \| New Multi-Year Outperformance Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	43,685
Director [Member] \| Liquidation Value [Member] \| Unvested Restricted Shares [Member] \| Restricted Share Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum percent of awards as a percent of total outstanding					10.00%
Vesting period					3 years
Vesting percentage					33.30%