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Pensions (Tables)
9 Months Ended
Sep. 30, 2022
Retirement Benefits [Abstract]  
Summary of Components of Net Periodic Pension (Benefit) Expense
The following table summarizes the components of Net periodic pension expense (benefit): 
 U.S. Benefit PlanNon-U.S. Benefit Plan
 Three Months Ended
September 30,
Nine Months Ended
September 30,
Three Months Ended
September 30,
Nine Months Ended
September 30,
(in millions)20222021202220212022202120222021
Service cost$— $— $— $— $0.1 $— $0.1 $0.1 
Interest cost1.2 1.2 3.3 3.6 0.2 0.2 0.6 0.5 
Amortization of actuarial loss0.6 1.0 1.7 2.9 0.2 0.2 0.5 0.6 
Amortization of prior service cost— — — — — 0.1 0.1 0.2 
Expected return on plan assets(1.7)(2.4)(5.2)(7.2)(0.5)(0.5)(1.5)(1.5)
Net periodic pension expense (benefit)$0.1 $(0.2)$(0.2)$(0.7)$— $— $(0.2)$(0.1)