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Goodwill and Intangible Assets - Narrative (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2021
USD ($)
reporting_unit
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Finite-Lived Intangible Assets [Line Items]      
Number of reporting units | reporting_unit 2    
Goodwill impairment loss $ 0.0   $ 5.4
Amortization expense 4.3 $ 4.3 4.6
Surgical Facility | Disposed of by Sale      
Finite-Lived Intangible Assets [Line Items]      
Pre-tax loss on disposal $ 2.8    
Physician income guarantees | Minimum      
Finite-Lived Intangible Assets [Line Items]      
Useful lives of intangible assets 3 years    
Physician income guarantees | Maximum      
Finite-Lived Intangible Assets [Line Items]      
Useful lives of intangible assets 4 years    
Non-compete agreements | Minimum      
Finite-Lived Intangible Assets [Line Items]      
Useful lives of intangible assets 2 years    
Non-compete agreements | Maximum      
Finite-Lived Intangible Assets [Line Items]      
Useful lives of intangible assets 5 years    
Management rights agreements      
Finite-Lived Intangible Assets [Line Items]      
Useful lives of intangible assets 15 years    
Customer relationships | Minimum      
Finite-Lived Intangible Assets [Line Items]      
Useful lives of intangible assets 3 years    
Customer relationships | Maximum      
Finite-Lived Intangible Assets [Line Items]      
Useful lives of intangible assets 10 years    
Ancillary Services      
Finite-Lived Intangible Assets [Line Items]      
Goodwill impairment loss   28.6  
Alliance      
Finite-Lived Intangible Assets [Line Items]      
Goodwill impairment loss   $ 4.9 $ 2.5