v3.25.3
Retirement and Other Postretirement Benefit Plans - Schedule of Amounts Recognized on Balance Sheet (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Amounts recognized on the balance sheet:          
Other non-current liabilities $ 29.9   $ 29.9   $ 31.9
Defined Benefit Retirement Plans | U.S.          
Amounts recognized on the balance sheet:          
Accrued liabilities 1.3   1.3   16.2
Other non-current liabilities 2.8   2.8   3.9
Total accrued benefit $ 4.1   $ 4.1   $ 20.1
Defined Benefit Plan, Tax Status [Extensible List] Non qualified Non qualified Non qualified Non qualified Non qualified
Defined Benefit Retirement Plans | European          
Amounts recognized on the balance sheet:          
Accrued liabilities $ 1.3   $ 1.3   $ 1.0
Other non-current liabilities 13.0   13.0   11.9
Total accrued benefit 14.2   14.2   12.9
Postretirement Health Care and Life Insurance Benefit Plans          
Amounts recognized on the balance sheet:          
Accrued liabilities 0.2   0.2   0.2
Other non-current liabilities 0.7   0.7   0.6
Total accrued benefit $ 0.9   $ 0.9   $ 0.8