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SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION - Schedule of Real Estate and Accumulated Depreciation (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Real Estate and Equipment |  |  |
Balance at the beginning of the period | $ 7,617,547 | $ 7,456,940 | $ 6,222,360
Additions | 226,105 | 317,392 | 1,234,580
Disposals | (18,889) | (43,809) | 0
Impairment |  | 0 | 0
Reclassification of assets held for sale | 0 | (112,976) |
Balance at the end of the period | 7,824,763 | 7,617,547 | 7,456,940
Accumulated Depreciation |  |  |
Balance at the beginning of the period | 1,270,716 | 1,147,540 | 973,205
Additions | 193,697 | 188,445 | 174,335
Disposals | (9,936) | (7,974) | 0
Impairment |  | 0 | 0
Reclassification of assets held for sale | 0 | (57,295) |
Balance at the end of the period | $ 1,454,477 | $ 1,270,716 | $ 1,147,540

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- Definition Represents the amount of additions to accumulated depreciation for the period. + References No definition available. + Details
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- Definition SEC Schedule III, Real Estate Accumulated Depreciation, Reclassification Of Assets Held For Sale + References No definition available. + Details
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- Definition Represents the amount of increase in real estate investments during the period. + References No definition available. + Details
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- Definition SEC Schedule III, Real Estate, Impairment, Related Accumulated Depreciation + References No definition available. + Details
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- Definition SEC Schedule III, Real Estate, Reclassification Of Assets Held For Sale + References No definition available. + Details
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- Definition Amount of accumulated depreciation pertaining to real estate investments for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28.FN4) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
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- Definition Amount, before accumulated depreciation, of real estate investments for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28.4) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 + Details
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- Definition Amount of write-down or reserve recognized in the income statement on real estate investments for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28.FN5) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
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