v3.25.1
Pension and Postretirement Benefits (Tables)
3 Months Ended
Mar. 31, 2025
Postemployment Benefits [Abstract]  
Schedule of Components of Net Periodic Cost (Income)
The following table sets forth the components of the net periodic cost (income) associated with our pension plans and our postretirement benefit obligations:
Pension plansPostretirement benefit obligations
Three months ended March 31, Three months ended March 31,
2025202420252024
Components of net periodic cost (income):
Service cost$0.5 $0.4 $— $— 
Interest cost15.7 15.4 — — 
Expected return on plan assets(21.0)(19.9)— — 
Amortization of prior service cost (credit)— — (0.1)(0.1)
Amortization of actuarial loss (gain)(0.3)(0.3)— — 
Net periodic cost (income)$(5.1)$(4.4)$(0.1)$(0.1)