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Pension and Postretirement Benefits (Tables)
3 Months Ended
Mar. 31, 2025
Retirement Benefits [Abstract]  
Components of Net Periodic Cost for Pension and Postretirement Benefits
Components of the net periodic cost for pension and postretirement benefits for the three months ended March 31, 2025 and 2024 were as follows:
U.S.
Defined Benefit Plans
Non-U.S.
Defined Benefit Plans
Postretirement
Medical Benefits
(Amounts in millions) 202520242025202420252024
Service cost$0.2 $5.7 $1.5 $1.3 $— $— 
Interest cost5.6 5.4 3.2 3.0 0.2 0.2 
Expected return on plan assets(6.0)(6.0)(2.0)(1.9)— — 
Settlement loss (1)
1.5 — — — — — 
Amortization of unrecognized prior service cost and other costs0.1 — 0.2 0.1 — — 
Amortization of unrecognized net loss 0.1 — 0.5 0.6 — — 
Net periodic cost recognized$1.5 $5.1 $3.4 $3.1 $0.2 $0.2 

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(1) Represents a pension settlement accounting loss incurred in conjunction with the freeze of our Company-sponsored qualified defined benefit pension plan in the United States (the "Qualified Plan") for non-union employees. Full year cash outflows are expected to exceed the service and interest cost components and trigger a settlement loss later in 2025 in the range of $6 million - $7 million. The first quarter loss was recorded based on this full year estimate.