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Investments in Properties (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Investments in Properties    
Land $ 1,087,278 $ 1,061,408
Acquired ground lease 91 6,006
Buildings and improvements 25,388,788 24,287,103
Tenant improvements 830,211 781,540
Total investments in operating properties 27,306,368 26,136,057
Accumulated depreciation and amortization (7,823,685) (7,268,981)
Investments in operating properties, net 19,482,683 18,867,076
Construction in progress and space held for development 4,635,215 4,789,134
Land held for future development 118,190 118,452
Investments in properties, net $ 24,236,088 $ 23,774,662