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Real Estate Investments Business Acquisitions (Parenthetical) (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Business Acquisition [Line Items]    
Business acquisition gross purchase price $ 192.9  
Percentage of purchase price of property 100.00%  
Percentage of equity interest acquired 20.00%  
Country Walk Plaza [Member]    
Business Acquisition [Line Items]    
Percentage of purchase price of property   100.00%
Percentage of equity interest acquired   30.00%