v3.25.4
Commitments And Contingencies (Narrative) (Details)
$ in Millions
 1 Months Ended 3 Months Ended 12 Months Ended 16 Months Ended
Jul. 31, 2023
plaintiff
Sep. 30, 2014
USD ($)
Dec. 31, 2025
USD ($)
a
Dec. 31, 2024
USD ($)
Dec. 31, 2019
USD ($)
component
Dec. 31, 2025
USD ($)
a
Other Commitments [Line Items]            
Accrued environmental loss contingencies, current     $ 7.8 $ 7.9   $ 7.8
Gain from insurance recoveries on impaired property, plant and equipment     $ 2.9 $ 0.0    
Environmental Loss Contingency, Statement Of Financial Position, Extensible Enumeration, Not Disclosed Flag     estimated gross liability estimated gross liability    
Loss from Catastrophes            
Other Commitments [Line Items]            
Total expenses and losses     $ 6.0 $ 23.3   29.3
Insurance recoveries to be received     0.0 2.8    
Insurance recoveries received     6.0 20.0   31.7
Net gain from insurance           2.4
Gain from insurance recoveries on impaired property, plant and equipment           2.9
Loss from natural disaster, net of insurance recoveries     0.0 0.5    
Insurance proceeds for lost profits     9.3 0.0    
LyondellBasell            
Other Commitments [Line Items]            
Number of plaintiffs | plaintiff 58          
Environmental Claims For Site In Goodyear Arizona            
Other Commitments [Line Items]            
Accrual for environmental loss contingencies, revision in estimates   $ 49.0     $ 18.9  
Accrual for environmental loss contingencies     12.9 16.4   12.9
Accrued environmental loss contingencies, current     $ 7.8 7.8   $ 7.8
Loss contingency reimbursement rate     2100.00%     2100.00%
Recorded third-party environmental recoveries receivable     $ 2.3 $ 3.0   $ 2.3
Number Of main remedial components | component         2,000,000  
Environmental Claims For Crab Orchard National Wildlife Refuge Superfund Site            
Other Commitments [Line Items]            
Approximate size of referenced site | a     55,000     55,000