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Retirement and Other Postretirement Benefit Plans - Schedule of Net Periodic Benefit Costs of Defined Benefit Retirement Plans (Details) - Defined Benefit Retirement Plans - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
U.S.          
Net periodic benefit costs of defined benefit retirement plans          
Service cost $ 0.0 $ 0.0 $ 0.0 $ 0.0  
Interest cost 0.2 0.2 0.4 0.4  
Net amortization 0.0 (0.1) 0.0 (0.2)  
Net periodic benefit cost $ 0.2 $ 0.1 $ 0.4 $ 0.2  
Defined Benefit Plan, Tax Status [Extensible List] Non qualified Non qualified Non qualified Non qualified Non qualified
European          
Net periodic benefit costs of defined benefit retirement plans          
Service cost $ 0.2 $ 0.1 $ 0.3 $ 0.3  
Interest cost 0.1 0.2 0.2 0.3  
Expected return on plan assets 0.0 0.0 0.0 (0.1)  
Net amortization 0.0 0.0 0.1 0.1  
Net periodic benefit cost $ 0.3 $ 0.3 $ 0.6 $ 0.6