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Contingencies - Other Matters (Details)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 31, 2025
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Nov. 30, 2023
item
Other Matters          
Legacy environmental charge   $ 4.0 $ 11.0    
Anti-competition matters          
Other Matters          
Number of glass manufacturers | item         9
Joint venture percentage of ownership         50.00%
Superfund sites          
Other Matters          
Loss contingency accrual   21.0 $ 35.0 $ 35.0  
Cuyahoga Valley National Park          
Other Matters          
Loss contingency accrual   16.5      
Anticipated future costs   $ 50.0      
Cuyahoga Valley National Park | Other Expense          
Other Matters          
Litigation settlement charge $ 4.0