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STORAGE PROPERTIES - Summary (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
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STORAGE FACILITIES |  |
Storage properties | $ 8,098,390 | $ 7,628,774
Less: Accumulated depreciation | (1,684,787) | (1,590,588)
Storage properties, net | 6,413,603 | 6,038,186
Land |  |
STORAGE FACILITIES |  |
Storage properties | 1,703,015 | 1,645,549
Buildings and improvements |  |
STORAGE FACILITIES |  |
Storage properties | 6,148,331 | 5,759,848
Equipment |  |
STORAGE FACILITIES |  |
Storage properties | 155,294 | 147,709
Construction in progress |  |
STORAGE FACILITIES |  |
Storage properties | 49,805 | 33,723
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/1943274/2147478777/944-210-S99-1 Reference 2: 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)(6)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-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/1943274/2147478777/944-210-S99-1 Reference 2: 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)(6)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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