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Acquisitions and Disposals - Disposals and Deconsolidations (Details)
$ in Millions
3 Months Ended
Mar. 31, 2022
USD ($)
surgical_facility
Mar. 31, 2021
USD ($)
business_entity
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Proceeds from disposals of facilities and other assets $ 0.0 $ 2.3
Fair value of investments 9.8  
Series of Individually Immaterial Business Acquisitions    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Number of businesses acquired | business_entity   2
Disposal Group One | Disposed of by Sale    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Proceeds from disposals of facilities and other assets 11.5  
Pre-tax loss on disposals and deconsolidations $ 5.6 $ 0.4
Number of surgical facilities contributed as non-cash consideration | surgical_facility 2