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Commitments and Contingencies (Details) - USD ($)
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Cash tender [Abstract]    
Minimum aggregate value of Operating Partnership units to be tendered $ 50,000,000  
Fair Value of Written Option, Cash Tender Agreement $ 0  
Market value per common share (in dollars per share) $ 41.88  
Approximate aggregate value of interests in the Operating Partnership that may be tendered $ 1,000,000,000.0  
Additional interest the Company would have owned in the Operating Partnership upon purchase of interests (in hundredths) 28.00%  
Continuing offer [Abstract]    
Common Stock, Conversion Basis one TRG Unit is exchangeable for one share of common stock  
The Mall of San Juan [Member]    
Continuing offer [Abstract]    
Business Interruption Insurance Proceeds Received   $ 4,043,000
Insurance Recoveries - Expense Items   $ 3,000
Series B Preferred Stock [Member]    
Continuing offer [Abstract]    
Convertible Preferred Stock, Terms of Conversion ratio of 14,000 shares of Series B Preferred Stock for one share of common stock