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STORAGE PROPERTIES - Summary (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
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STORAGE FACILITIES |  |
Storage properties | $ 7,332,817 | $ 7,295,778
Less: Accumulated depreciation | (1,375,321) | (1,247,775)
Storage properties, net (including VIE assets of $150,067 and $167,180, respectively) | 5,957,496 | 6,048,003
Land |  |
STORAGE FACILITIES |  |
Storage properties | 1,588,138 | 1,588,138
Buildings and improvements |  |
STORAGE FACILITIES |  |
Storage properties | 5,497,013 | 5,483,506
Equipment |  |
STORAGE FACILITIES |  |
Storage properties | 143,680 | 144,605
Construction in progress |  |
STORAGE FACILITIES |  |
Storage properties | 62,041 | 37,584
Right-of-use assets - finance leases |  |
STORAGE FACILITIES |  |
Storage properties | $ 41,945 | $ 41,945

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- Definition Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(d)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 + Details
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- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(d)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 + Details
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