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Real Estate and Loans Receivable - Components of Net Investment in Direct Financing Leases (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Business Combinations [Abstract]    
Minimum lease payments receivable $ 1,607,024us-gaap_CapitalLeasesFutureMinimumPaymentsReceivable  
Estimated residual values 211,888mpw_EstimatedResidualValues  
Less unearned income (1,379,396)us-gaap_DeferredRevenueLeasesNet  
Net investment in direct financing leases $ 439,516us-gaap_NetInvestmentInDirectFinancingAndSalesTypeLeases $ 431,024us-gaap_NetInvestmentInDirectFinancingAndSalesTypeLeases