v3.25.2
Fair Value Measurements - Assets and Liabilities at Fair Value (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Other current liabilities:    
Contingent consideration obligations $ 297.2 $ 291.2
Other non-current liabilities:    
Contingent consideration obligations 237.7 221.6
Fair Value, Measurements Recurring    
Assets:    
Cash equivalents 2,234.9 1,664.9
Marketable equity securities 157.0 179.7
Derivative contracts 31.7 62.5
Convertible note 30.0  
Plan assets for deferred compensation 50.1 42.8
Total 2,503.7 1,949.9
Other current liabilities:    
Derivative contracts 123.7  
Contingent consideration obligations 297.2 291.2
Other non-current liabilities:    
Derivative contracts 26.8  
Contingent consideration obligations 237.7 221.6
Total 685.4 524.5
Derivative contracts   11.7
Total 685.4 524.5
Quoted Prices in Active Markets (Level 1) | Fair Value, Measurements Recurring    
Assets:    
Cash equivalents 0.0 0.0
Marketable equity securities 157.0 179.7
Derivative contracts 0.0 0.0
Convertible note 0.0  
Plan assets for deferred compensation 0.0 0.0
Total 157.0 179.7
Other current liabilities:    
Derivative contracts 0.0  
Contingent consideration obligations 0.0 0.0
Other non-current liabilities:    
Derivative contracts 0.0  
Contingent consideration obligations 0.0 0.0
Total 0.0 0.0
Derivative contracts   0.0
Total 0.0 0.0
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements Recurring    
Assets:    
Cash equivalents 2,234.9 1,664.9
Marketable equity securities 0.0 0.0
Derivative contracts 31.7 62.5
Convertible note 0.0  
Plan assets for deferred compensation 50.1 42.8
Total 2,316.7 1,770.2
Other current liabilities:    
Derivative contracts 123.7  
Contingent consideration obligations 0.0 0.0
Other non-current liabilities:    
Derivative contracts 26.8  
Contingent consideration obligations 0.0 0.0
Total 150.5 11.7
Derivative contracts   11.7
Total 150.5 11.7
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements Recurring    
Assets:    
Cash equivalents 0.0 0.0
Marketable equity securities 0.0 0.0
Derivative contracts 0.0 0.0
Convertible note 30.0  
Plan assets for deferred compensation 0.0 0.0
Total 30.0 0.0
Other current liabilities:    
Derivative contracts 0.0  
Contingent consideration obligations 297.2 291.2
Other non-current liabilities:    
Derivative contracts 0.0  
Contingent consideration obligations 237.7 221.6
Total 534.9 512.8
Derivative contracts   0.0
Total $ 534.9 $ 512.8