v3.26.1
Acquisitions, Disposals and Deconsolidations (Details)
$ in Millions
 3 Months Ended
Mar. 31, 2026
USD ($)
surgical_facility
Mar. 31, 2025
USD ($)
Mar. 31, 2025
USD ($)
surgical_facility
Mar. 31, 2025
USD ($)
physician_practice
Dec. 31, 2025
USD ($)
Business Combination [Line Items]          
Total cash consideration, net of cash acquired $ 4.2 $ 44.0      
Goodwill and other intangible assets, net 5,205.2       $ 5,194.6
Proceeds from sales of equity investments 0.9 0.0      
Proceeds from disposals of facilities and other assets $ 0.0 4.8      
Disposed of by Sale | Surgical Facility and Equity Method Investment          
Business Combination [Line Items]          
Number of interests sold | surgical_facility 1        
Proceeds from sales of equity investments $ 0.9        
Pre-tax gain (loss) on disposal $ (4.0)        
Disposed of by Sale | Surgical Facility with a Retained Interest          
Business Combination [Line Items]          
Number of interests sold | surgical_facility     1    
Pre-tax gain (loss) on disposal   (3.0)      
Proceeds from disposals of facilities and other assets   0.5      
Disposed of by Sale | Surgical Facility and Physician Practice          
Business Combination [Line Items]          
Number of interests sold | surgical_facility     2    
Pre-tax gain (loss) on disposal   0.5      
Proceeds from disposals of facilities and other assets   4.3      
Surgical Facilities          
Business Combination [Line Items]          
Number of business entities acquired | surgical_facility 1        
Total cash consideration, net of cash acquired $ 4.2 3.8      
Recognized non-controlling interests 4.1        
Goodwill and other intangible assets, net $ 8.3        
Number of non-controlling interests acquired | surgical_facility     1    
Surgical Facilities, Physician Practices and Other Ancillary Businesses          
Business Combination [Line Items]          
Number of business entities acquired     4 1  
Total cash consideration, net of cash acquired   44.0      
Recognized non-controlling interests   28.0 $ 28.0 $ 28.0  
Goodwill and other intangible assets, net   $ 70.2 $ 70.2 $ 70.2