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Schedule III - Real Estate and Accumulated Depreciation - Reconciliation of Carrying Amount of Real Estate Investments (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |
Balance, beginning of period | $ 16,927,332 | $ 15,020,198 | $ 12,947,735
ASC 842 adoption impact | 0 | (276,671) | 0
Additions (including acquisitions and improvements) | 3,110,907 | 2,632,472 | 2,756,218
Disposals | (446,864) | (463,485) | (289,157)
Foreign currency transaction adjustments and others | 570,410 | 14,818 | (394,598)
Balance, end of year | $ 20,161,785 | $ 16,927,332 | $ 15,020,198

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- Definition Investment in Real Estate, New Accounting Pronouncement Effect + References No definition available. + Details
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- Definition SEC Schedule III, Real Estate, Acquisitions and Improvements + References No definition available. + Details
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- Definition SEC Schedule III, Real Estate, Foreign Currency Translation Adjustments and Others + References No definition available. + Details
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- Definition Amount of real estate investments sold for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Footnote 4)) -URI http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024 + Details
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- Definition Amount, before accumulated depreciation, of real estate investment by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate. Excludes real estate not held as investment or interest. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column E)) -URI http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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