v3.26.1
Stockholders' Equity - Schedule of Accumulated Other Comprehensive Loss Balances, Net of Tax (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning balance     $ 6,887.6  
Net current period other comprehensive (loss) income $ (2.8) $ 207.8 (74.5) $ 300.3
Ending balance 6,640.7   6,640.7  
Foreign Currency Translation        
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning balance     (284.0)  
Net current period other comprehensive (loss) income [1]     (74.7)  
Ending balance (358.7)   (358.7)  
Defined Benefit Obligation        
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning balance     (10.2)  
Net current period other comprehensive (loss) income [1]     0.2  
Ending balance (10.0)   (10.0)  
Accumulated Other Comprehensive Loss        
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning balance     (294.2)  
Net current period other comprehensive (loss) income [1]     (74.5)  
Ending balance $ (368.7)   $ (368.7)  
[1] Amounts are reported net of tax. Tax effects were immaterial.