v3.26.3
Commitments and Contingencies (Summary of Estimated Loss from Hurricane) (Detail) - Loss from Catastrophes - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended 13 Months Ended
Sep. 30, 2025
Sep. 30, 2025
Sep. 30, 2025
Loss Contingencies [Line Items]      
Loss from natural disaster, net of insurance recoveries $ 0.0 $ 0.0  
Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward]      
Loss from natural disaster, net of insurance recoveries 0.0 0.0  
Loss Contingency Accrual, Period Increase (Decrease) 0.5 6.3 $ 29.6
Insurance proceeds for lost profits 2.7 6.7  
Site clean-up and remediation costs      
Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward]      
Loss Contingency Accrual, Period Increase (Decrease) 0.3 5.0  
Impairment and Repairs of property, plant and equipment      
Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward]      
Loss Contingency Accrual, Period Increase (Decrease) 0.1 0.9  
Impairment and rework of inventory      
Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward]      
Loss Contingency Accrual, Period Increase (Decrease) 0.0 0.1  
Other      
Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward]      
Loss Contingency Accrual, Period Increase (Decrease) $ 0.1 $ 0.3