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Real Estate and Lending Activities - Development Activities - Additional Information (Detail)
€ in Millions, £ in Millions, $ in Millions
1 Months Ended 6 Months Ended
Apr. 30, 2017
GBP (£)
Jun. 30, 2017
USD ($)
Facility
Jun. 30, 2017
EUR (€)
Facility
Birmingham, England      
Business Acquisition [Line Items]      
Purchase price of acquisition £ 2.7    
Term of lease, years 15 years    
Total development costs anticipated £ 30.0    
Development Activities [Member] | Adeptus Health [Member] | Acute Care Facilities [Member]      
Business Acquisition [Line Items]      
Number of facilities constructed | Facility   4 4
Acquisition costs | $   $ 68  
Development Activities [Member] | IMED [Member] | Acute Care Facilities [Member] | Spain [Member]      
Business Acquisition [Line Items]      
Acquisition costs | €     € 21
Ownership interests acquired   50.00% 50.00%