Average Share Price Per Share

No definition available.

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- Definition

Represents the number of common shares that would have been issued upon the conversion of Preferred Operating Partnership Units that were excluded from the earnings per share computation as their effect would have been anti-dilutive.

+ References

No definition available.

+ Details

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- Definition

Represents the number of Preferred Operating Partnership units outstanding at the balance sheet date that are excluded from the earnings per share computation as their effect would have been anti-dilutive.

+ References

No definition available.

+ Details

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- Definition

Represents the minimum amount of convertible preferred operating partnership units which will be settled in cash upon conversion.

+ References

No definition available.

+ Details

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

+ Details

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Balance Type:	na
Period Type:	duration

- 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

Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870

+ Details

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Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Balance Type:	na
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- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 40
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1930-109256

+ Details

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Period Type:	duration

- Details

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- Details

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Summary of Significant Accounting Policies - Earnings Per Common Share (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Apr. 30, 2016	Feb. 29, 2016	Sep. 30, 2015	Sep. 15, 2015	Jun. 21, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Average share price per share		$ 83.81
Number of Units		10,673,407	2,928,493	2,210,840
Equivalent Shares (if converted)		7,846,519	1,179,291	1,260,243
Exchangeable senior notes repurchased	$ 610,314,000	$ 610,314,000	$ 623,863,000
Common OP Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of Units		5,564,631	0	0
Equivalent Shares (if converted)		5,564,631	0	0
Series A Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of Units		875,480	0	0
Equivalent Shares (if converted)		875,480	0	0
Exchangeable preferred operating partnership units settled in cash, minimum	115,000,000	$ 115,000,000
Series B Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of Units		1,676,087	1,676,087	1,592,062
Equivalent Shares (if converted)		499,966	579,640	764,385
Series C Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of Units		704,016	704,016	605,256
Equivalent Shares (if converted)		353,646	410,002	489,366
Series D Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of Units		1,853,193	548,390	13,522
Equivalent Shares (if converted)		552,796	189,649	6,492
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of earnings per common share		88,552	62,254	27,374
2.375% Exchangeable Senior Notes due 2033 (the 2013 Notes) [Member] \| Operating Partnership [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Exchangeable senior notes repurchased	$ 63,170,000	$ 63,170,000	$ 85,364,000		$ 2,555,000	$ 19,639,000		$ 164,636,000
Interest rate	2.375%	2.375%							2.375%
Exchange price	$ 54.09	$ 54.09
Shares related to the Notes included in the computation for diluted earnings per share	309,730		513,040	130,883
Exchangeable Senior Notes 3.125% due 2035 (the 2015 Notes) [Member] \| Operating Partnership [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Exchangeable senior notes repurchased	$ 575,000,000	$ 575,000,000	$ 575,000,000
Interest rate	3.125%	3.125%					3.125%
Exchange price	$ 94.71	$ 94.71
Shares related to the Notes included in the computation for diluted earnings per share		0	0	0