v3.24.2.u1
Pensions and Other Postretirement Benefits (Tables)
3 Months Ended
Jul. 31, 2024
Retirement Benefits [Abstract]  
Net periodic benefit cost
The following table summarizes our net periodic benefit cost for defined benefit pension and other postretirement benefit plans.
Three Months Ended July 31,
 Defined Benefit Pension PlansOther Postretirement Benefits
 2024202320242023
Service cost$0.1 $0.2 $0.2 $0.2 
Interest cost4.4 4.6 0.7 0.6 
Expected return on plan assets(3.1)(4.1)— — 
Amortization of net actuarial loss (gain)1.1 0.9 (0.5)(0.4)
Amortization of prior service cost (credit)0.1 0.1 (0.2)(0.1)
Settlement loss (gain)— 3.2 — — 
Net periodic benefit cost$2.6 $4.9 $0.2 $0.3