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Receivables (Details) - USD ($)
Mar. 31, 2020
Dec. 31, 2019
Receivables [Abstract]    
Accounts receivable $ 12,900,000 $ 13,000,000.0
Accounts receivable, allowance for doubtful accounts 0 0
Straight-line rent receivables, gross 213,000,000.0 195,300,000
Straight-line rent receivable, allowance for doubtful accounts $ 4,000,000.0 $ 0