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Revenue - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Jul. 01, 2021
Disaggregation of Revenue [Line Items]        
Monthly resident fees $ 27.5 $ 21.1    
Revenue recognized 60.2 60.6 $ 94.6  
Securities Purchase Agreement | HCA Healthcare, Inc. | Health Care Services        
Disaggregation of Revenue [Line Items]        
Medicare advance payments       $ 63.6
Accelerated and Advance Payment Program | CARES Act        
Disaggregation of Revenue [Line Items]        
Amount received from Accelerated and Advance Payment Program 3.1 87.5    
Accelerated and Advance Payment Program | CARES Act | Health Care Services        
Disaggregation of Revenue [Line Items]        
Amount received from Accelerated and Advance Payment Program   75.2    
Deferred Revenue and Credits        
Disaggregation of Revenue [Line Items]        
Deferred revenue $ 67.5 $ 138.3