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Rent and Other Receivables, Net (Details) - USD ($)
$ in Millions
Jun. 30, 2018
Dec. 31, 2017
Receivables [Abstract]    
Allowance for doubtful accounts $ 10.1 $ 10.4
Hurricane-related insurance claims receivable 4.9 8.9
Non-tenant receivables $ 0.9 $ 1.2