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Real Estate and Other Activities - Investments in Unconsolidated Operating Entities - Additional Information (Detail) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Mar. 14, 2022
Jan. 08, 2021
Business Acquisition [Line Items]        
Passive equity interest     50.00%  
Steward Health Care System LLC [Member]        
Business Acquisition [Line Items]        
Passive equity interest       9.90%
Distribution on equity investment   $ 11.0    
Aevis Victoria SA [Member]        
Business Acquisition [Line Items]        
Ownership interest in joint venture under the cost method 5.00%      
COVID-19 Pandemic [Member]        
Business Acquisition [Line Items]        
Favorable non-cash fair value adjustment on investment $ 9.0 $ 1.9    
Dividend income $ 2.0