v3.26.3
Commitments and Contingencies (Narrative) (Detail)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended 13 Months Ended
Sep. 30, 2025
USD ($)
Sep. 30, 2014
USD ($)
Sep. 30, 2025
USD ($)
Dec. 31, 2019
USD ($)
component
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
a
Dec. 31, 2025
USD ($)
Loss Contingencies [Line Items]              
Accrued environmental loss contingencies current           $ 8.9 $ 7.8
Loss from Catastrophes              
Loss Contingencies [Line Items]              
Loss from natural disaster, net of insurance recoveries $ 0.0   $ 0.0        
Insurance recoveries received 0.5   6.3   $ 29.1    
Loss Contingency Accrual, Period Increase (Decrease) 0.5   6.3   29.6    
Insurance recoveries received 0.5   6.3   $ 29.1    
Insurance proceeds for lost profits $ 2.7   $ 6.7        
Environmental Claims For A Site In Goodyear Arizona              
Loss Contingencies [Line Items]              
Accrual for environmental loss contingencies, revision in estimates   $ 49.0   $ 18.9      
Number of main remedial components | component       2      
Estimated liability           10.5 12.9
Accrued environmental loss contingencies current           $ 7.8 7.8
Loss contingency reimbursement rate           21.00%  
Other receivables           $ 1.6 $ 2.3
Environmental Claims For Crab Orchard National Wildlife Refuge Superfund Site              
Loss Contingencies [Line Items]              
Approximate size of referenced site | a           55,000