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Business Combinations - Fair Value of Assets and Liabilities Assumed (Details) - USD ($)
$ in Millions
 1 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Business Acquisition [Line Items]    
Goodwill $ 1,270.7 $ 1,263.2
Hospital Sisters Health System And Covenant Health    
Business Acquisition [Line Items]    
Property and equipment, net 0.1  
Goodwill 7.5  
Total assets acquired 16.9  
Hospital Sisters Health System And Covenant Health | Noncompete agreements    
Business Acquisition [Line Items]    
Identifiable intangible assets $ 0.5  
Finite-lived intangible asset useful life (in years) 3 years  
Hospital Sisters Health System And Covenant Health | Trade name    
Business Acquisition [Line Items]    
Identifiable intangible assets $ 1.8  
Finite-lived intangible asset useful life (in years) 20 years  
Hospital Sisters Health System And Covenant Health | Certificate of need    
Business Acquisition [Line Items]    
Identifiable intangible assets $ 7.0  
Finite-lived intangible asset useful life (in years) 20 years