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Schedule III Real Estate and Accumulated Depreciation [Schedule] (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Real Estate Investments [Abstract] |  |  |
Balance at beginning of year | $ (13,292,039,000) | $ (12,972,170,000) | $ (8,215,768,000)
Acquisitions | 130,187,000 | 127,710,000 | 4,961,140,000
Less: FMV of Leases included in Acquisitions | (796,000) | (1,488,000) | (51,588,000)
Improvement and development | 253,954,000 | 322,829,000 | 202,614,000
Disposition of real estate assets | (18,577,000) | (123,861,000) | (355,764,000)
Balance at end of year | (13,656,807,000) | (13,292,039,000) | (12,972,170,000)
Real Estate and Accumulated Depreciation Disclosure [Abstract] |  |  |
Balance at beginning of year | 2,075,071,000 | 1,674,801,000 | 1,499,213,000
Depreciation | 485,654,000 | 463,590,000 | 314,076,000
Disposition of real estate assets | (11,438,000) | (63,320,000) | (138,488,000)
Balance at end of year | 2,549,287,000 | 2,075,071,000 | 1,674,801,000
Assets Held-for-sale |  |  |
Real Estate Investments [Abstract] |  |  |
Balance at beginning of year | (5,321,000) | 0 |
Balance at end of year | 0 | (5,321,000) | 0
Real Estate and Accumulated Depreciation Disclosure [Abstract] |  |  |
Accumulated depreciation | $ 0 | $ 0 | $ 0

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- Definition Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84164758&loc=d3e45014-112735 + 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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28(Column F)) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 + Details
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- Definition Amount of decrease to accumulated depreciation for 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=6590653&loc=d3e638233-123024 + 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=6590653&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=6590653&loc=d3e638233-123024 + Details
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- Definition The cumulative amount of depreciation for real estate property held for investment purposes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(3)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Amount of increase in real estate investments from acquisitions other than through foreclosure 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=6590653&loc=d3e638233-123024 + Details
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