v3.25.2
Stockholders' Equity - Schedule of Accumulated Other Comprehensive Loss Balances, Net of Tax (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning balance     $ 6,534.9  
Net current period other comprehensive (loss) income $ 207.8 $ 2.8 300.3 $ (44.8)
Ending balance 6,934.6   6,934.6  
Foreign Currency Translation [Member]        
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning balance     (539.6)  
Net current period other comprehensive (loss) income [1]     300.3  
Ending balance (239.3)   (239.3)  
Defined Benefit Obligation [Member]        
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning balance     (1.6)  
Net current period other comprehensive (loss) income [1]     0.0  
Ending balance (1.6)   (1.6)  
Accumulated Other Comprehensive (Loss) Income        
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning balance     (541.2)  
Net current period other comprehensive (loss) income [1]     300.3  
Ending balance $ (240.9)   $ (240.9)  
[1] Amounts are reported net of tax. Tax effects were immaterial.