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Real Estate Facilities (Schedule of Real Estate Activities) (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Operating facilities, at cost:    
Beginning balance (Operating facilities, at cost) $ 24,219,126  
Capital expenditures to maintain real estate facilities 153,120  
Capital expenditures for property enhancements 124,298  
Capital expenditures for energy efficiencies (LED lighting, solar) 46,357  
Acquisitions 2,284,590  
Dispositions and other (3,461)  
Developed or expanded facilities opened for operation 172,644  
Ending balance (Operating facilities, at cost) 26,996,674  
Accumulated depreciation:    
Beginning balance (Accumulated depreciation) (8,554,155)  
Depreciation expense (636,631)  
Dispositions and other 2,635  
Ending balance (Accumulated depreciation) (9,188,151)  
Construction in process:    
Beginning balance (Construction in process) 372,992  
Costs incurred to develop and expand real estate facilities 257,527  
Acquisitions 2,922  
Write-off of cancelled projects (3,733)  
Developed or expanded facilities opened for operation (172,644)  
Ending balance (Construction in process) 457,064  
Total real estate facilities $ 18,265,587 $ 16,037,963