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Summary of Significant Accounting Policies - Non-cash Investing and Financing Activities (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Other Significant Noncash Transactions [Line Items] |  |  |
Accounts payable related to construction in progress | $ 13,300 | $ 31,600 | $ 25,700
Dividends declared | 75,245 | 68,604 | 61,500
Mortgages assumed from acquisitions | 0 | 33,700 | 293,300
Issuance of Operating Partnership Units ("OP Units") | 0 | 0 | 18,300
Redemption of OP Units | 0 | 18,300 | 0
Elimination of a previously held equity interest | 0 | 1,400 | 2,500
Preferred equity interest and mezzanine loan applied to purchase price of acquired properties | 0 | 0 | 51,800
Reclassification adjustment of foreign currency translation |  |  | 21,755
Write-off of preferred share original issuance costs | 0 | 0 | 1,943
Accumulated Other Comprehensive Loss [Member] |  |  |
Other Significant Noncash Transactions [Line Items] |  |  |
Reclassification adjustment of foreign currency translation | $ 0 | $ 0 | $ 21,800

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- Definition The value of OP Units issued as [noncash or part noncash] consideration for a business or asset acquired. Noncash is defined as transactions during a period that affect recognized assets or liabilities but 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. + References No definition available. + Details
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- Definition Future cash outflow to pay for construction in progress expenditures that have occurred. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 + Details
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