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Business Acquisitions (Details) - USD ($)
$ in Millions
9 Months Ended
Aug. 20, 2024
Feb. 26, 2024
Sep. 30, 2024
Dec. 31, 2023
Business Acquisition [Line Items]        
Goodwill     $ 19,267.2 $ 17,118.8
Genesis Ultimate Holding Co        
Business Acquisition [Line Items]        
Aggregate purchase price   $ 1,860.0    
Federal tax attributes   $ 110.0    
Tax benefit utilization period (in years)   13 years    
Goodwill     2,158.5  
Other identifiable intangibles     1,467.0  
Genesis Ultimate Holding Co | Trade names        
Business Acquisition [Line Items]        
Intangible assets acquired, not subject to amortization     80.0  
Genesis Ultimate Holding Co | Customer related intangibles        
Business Acquisition [Line Items]        
Other identifiable intangibles     $ 1,364.0  
Weighted average useful life of finite-lived intangible assets (in years)     19 years  
Genesis Ultimate Holding Co | Technology        
Business Acquisition [Line Items]        
Other identifiable intangibles     $ 103.0  
Weighted average useful life of finite-lived intangible assets (in years)     5 years 6 months  
RCP Vega Holdings, LLC        
Business Acquisition [Line Items]        
Aggregate purchase price $ 1,607.0      
Federal tax attributes $ 100.0      
Tax benefit utilization period (in years) 14 years