v3.25.3
Commitments and Contingencies (Summary of Estimated Loss from Hurricane) (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended 13 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Loss Contingencies [Line Items]          
Insurance proceeds for lost profits $ 2.7 $ 0.0 $ 6.7 $ 0.0  
Loss from Catastrophes          
Loss Contingencies [Line Items]          
Total expenses and losses 0.5 3.7 6.3 3.7 $ 29.6
Insurance proceeds for property damage (0.5) 0.0 (6.3) 0.0 (29.1)
Insurance recoveries to be received 0.0 (3.2) 0.0 (3.2)  
Loss from natural disaster, net of insurance recoveries 0.0 0.5 0.0 0.5  
Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward]          
Insurance recoveries receivable, net of deductible, beginning balance     2.8    
Expenses incurred during the period ended September 30, 2025 0.5 3.7 6.3 3.7 29.6
Insurance proceeds for property damage (0.5) 0.0 (6.3) 0.0 (29.1)
Insurance recoveries receivable, net of deductible, ending balance 0.0   0.0   $ 0.0
Loss from Catastrophes | Site clean-up and remediation costs          
Loss Contingencies [Line Items]          
Total expenses and losses 0.3 0.0 5.0 0.0  
Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward]          
Expenses incurred during the period ended September 30, 2025 0.3 0.0 5.0 0.0  
Loss from Catastrophes | Impairment and Repairs of property, plant and equipment          
Loss Contingencies [Line Items]          
Total expenses and losses 0.1 2.9 0.9 2.9  
Insurance proceeds for property damage     (9.1)    
Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward]          
Expenses incurred during the period ended September 30, 2025 0.1 2.9 0.9 2.9  
Insurance proceeds for property damage     (9.1)    
Loss from Catastrophes | Impairment and rework of inventory          
Loss Contingencies [Line Items]          
Total expenses and losses 0.0 0.8 0.1 0.8  
Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward]          
Expenses incurred during the period ended September 30, 2025 0.0 0.8 0.1 0.8  
Loss from Catastrophes | Other          
Loss Contingencies [Line Items]          
Total expenses and losses 0.1 0.0 0.3 0.0  
Movement in Loss Contingency Receivable, Increase (Decrease) [Roll Forward]          
Expenses incurred during the period ended September 30, 2025 $ 0.1 $ 0.0 $ 0.3 $ 0.0