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Pensions (Tables)
6 Months Ended
Jun. 30, 2022
Retirement Benefits [Abstract]  
Summary of Components of Net Periodic Pension (Benefit) Expense
The following table summarizes the components of Net periodic pension benefit: 
 U.S. Benefit PlanNon-U.S. Benefit Plan
 Three Months Ended
June 30,
Six Months Ended
June 30,
Three Months Ended
June 30,
Six Months Ended
June 30,
(in millions)20222021202220212022202120222021
Service cost$— $— $— $— $— $— $— $0.1 
Interest cost1.0 1.2 2.1 2.4 0.2 0.1 0.4 0.3 
Amortization of actuarial loss0.6 0.9 1.1 1.9 0.1 0.2 0.3 0.4 
Amortization of prior service cost— — — — 0.1 0.1 0.1 0.1 
Expected return on plan assets(1.8)(2.4)(3.5)(4.8)(0.5)(0.5)(1.0)(1.0)
Net periodic pension benefit$(0.2)$(0.3)$(0.3)$(0.5)$(0.1)$(0.1)$(0.2)$(0.1)