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Business Combinations - Fair Value of Assets and Liabilities Assumed (Details) - USD ($)
$ in Millions
1 Months Ended
Aug. 31, 2022
Sep. 30, 2022
Dec. 31, 2021
Business Acquisition [Line Items]      
Goodwill   $ 1,247.4 $ 1,237.0
Altru Health System and Trinity Medical Center      
Business Acquisition [Line Items]      
Goodwill $ 10.4    
Total assets acquired 10.7    
Altru Health System and Trinity Medical Center | Noncompete agreements      
Business Acquisition [Line Items]      
Identifiable intangible assets $ 0.3    
Altru Health System and Trinity Medical Center | Noncompete agreements | Minimum      
Business Acquisition [Line Items]      
Finite-lived intangible asset useful life 2 years    
Altru Health System and Trinity Medical Center | Noncompete agreements | Maximum      
Business Acquisition [Line Items]      
Finite-lived intangible asset useful life 3 years