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Investments in Properties (Tables)
6 Months Ended
Jun. 30, 2023
Investments in Properties  
Schedule of Investments in Properties

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A summary of our investments in properties is below (in thousands):

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Property Type

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As of June 30, 2023

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As of December 31, 2022

Land

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$

1,121,188

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$

1,061,408

Acquired ground lease

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6,312

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​

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6,006

Buildings and improvements

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25,150,315

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​

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24,287,103

Tenant improvements

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809,954

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781,540

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​

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27,087,769

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​

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26,136,057

Accumulated depreciation and amortization

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(7,739,462)

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​

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(7,268,981)

Investments in operating properties, net

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19,348,307

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18,867,076

Construction in progress and space held for development

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4,635,939

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4,789,134

Land held for future development

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193,936

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118,452

Investments in properties, net

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$

24,178,182

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$

23,774,662