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Real Estate and Other Activities - 2020 Activity - Additional Information (Detail)
$ in Thousands, £ in Millions, SFr in Millions
9 Months Ended
Aug. 13, 2020
USD ($)
Aug. 07, 2020
Hospital
Aug. 05, 2020
Hospital
Jul. 08, 2020
USD ($)
Hospital
Jun. 16, 2020
RenewalOption
Jan. 08, 2020
GBP (£)
Hospital
Sep. 30, 2021
USD ($)
Sep. 30, 2020
GBP (£)
Sep. 30, 2020
USD ($)
Jun. 24, 2020
CHF (SFr)
May 13, 2020
USD ($)
Business Acquisition [Line Items]                      
Term of lease extension, years             5 years        
Acquisition loan             $ 4,301,739   $ 3,524,910    
Joint Venture Partner [Member]                      
Business Acquisition [Line Items]                      
Ownership interest                     49.00%
Joint Venture Partner [Member] | Other Loans [Member]                      
Business Acquisition [Line Items]                      
Acquisition loan                     $ 205,000
Infracore [Member]                      
Business Acquisition [Line Items]                      
Secured loan | SFr                   SFr 45  
Acute Care Hospital [Member] | California [Member] | Prime Healthcare Services [Member]                      
Business Acquisition [Line Items]                      
Purchase price of acquisition $ 300,000                    
Acute Care Hospital [Member] | United Kingdom [Member] | BMI [Member]                      
Business Acquisition [Line Items]                      
Purchase price of acquisition | £           £ 1,500          
Number of facilities acquired | Hospital           30          
Initial fixed term of lease           2050          
Existence of option to extend         true false          
Number of lease extension options | RenewalOption         2            
Term of lease extension, years         5 years            
Lease extension options, description             two five-year renewal options        
Acute Care Hospital [Member] | Darlington, United Kingdom [Member]                      
Business Acquisition [Line Items]                      
Number of facilities acquired | Hospital   1                  
Inpatient Rehabilitation Hospital [Member] | Dahlen, Germany [Member]                      
Business Acquisition [Line Items]                      
Number of facilities acquired | Hospital     1                
Inpatient Rehabilitation Hospital and Acute Care Hospital [Member]                      
Business Acquisition [Line Items]                      
Purchase price of acquisition | £               £ 56      
Steward [Member] | Utah [Member]                      
Business Acquisition [Line Items]                      
Purchase price of acquisition       $ 200,000              
Number of facilities acquired | Hospital       2              
Steward [Member] | Davis and Jordan Valley Facilities [Member] | Utah [Member]                      
Business Acquisition [Line Items]                      
Net investment in lease       $ 950,000