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Real Estate - Summary of Carrying Amounts of Investment in Real Estate (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Land $ 5,814,790 $ 5,785,367
Depreciable property:    
Buildings and improvements 19,632,284 18,464,484
Furniture, fixtures and equipment 2,220,203 1,970,033
In-Place lease intangibles 518,324 486,137
Projects under development:    
Projects under development 24,307 411,134
Land held for development:    
Land held for development 62,998 86,170
Investment in real estate 28,272,906 27,203,325
Accumulated depreciation (8,354,282) (7,859,657)
Investment in real estate, net 19,918,624 19,343,668
Land [Member]    
Land 15,000  
Projects under development:    
Projects under development   23,531
Land held for development:    
Land held for development 46,160 46,160
Construction-in-progress [Member]    
Projects under development:    
Projects under development 24,307 387,603
Land held for development:    
Land held for development $ 16,838 $ 40,010