v3.25.2
Commitments and Contingencies (Narrative) (Detail)
$ in Millions
1 Months Ended 3 Months Ended 6 Months Ended 10 Months Ended 12 Months Ended
Jul. 31, 2023
plaintiff
Jun. 30, 2025
USD ($)
a
Sep. 30, 2014
USD ($)
Jun. 30, 2025
USD ($)
a
Jun. 30, 2025
USD ($)
a
Dec. 31, 2019
USD ($)
component
Dec. 31, 2024
USD ($)
Loss Contingencies [Line Items]              
Accrued environmental loss contingencies current   $ 7.8   $ 7.8 $ 7.8   $ 7.9
Insurance proceeds for lost profits   4.0   4.0      
Loss from Catastrophes              
Loss Contingencies [Line Items]              
Total expenses and losses   0.2   5.8 29.1    
Insurance recoveries receivable, net of deductible   3.6   3.6 3.6   2.8
Insurance deductible       0.5      
Insurance recoveries received   0.0   5.0 25.0    
LyondellBasell              
Loss Contingencies [Line Items]              
Number of victims | plaintiff 58            
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   14.4   14.4 14.4   16.4
Accrued environmental loss contingencies current   $ 7.8   $ 7.8 $ 7.8   7.8
Loss contingency reimbursement rate   21.00%   21.00% 21.00%    
Other receivables   $ 2.6   $ 2.6 $ 2.6   $ 3.0
Environmental Claims For Crab Orchard National Wildlife Refuge Superfund Site              
Loss Contingencies [Line Items]              
Approximate size of referenced site | a   55,000   55,000 55,000