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Pension and Other Postretirement Benefits
 9 Months Ended
Jan. 31, 2024
Retirement Benefits [Abstract]  
Pension and Other Postretirement Benefits Pension Costs
The following table shows the components of the net cost recognized for our U.S. pension plans. Similar information for other defined benefit plans is not presented due to immateriality.
Three Months EndedNine Months Ended
January 31,January 31,
(Dollars in millions)2023202420232024
Service cost$5 $5 $16 $14 
Interest cost8 8 24 25 
Expected return on plan assets(11)(10)(33)(30)
Amortization of:    
Prior service cost— — 1 — 
Net actuarial loss
2 2 7 5 
Settlement charge27 — 27 — 
Net cost$31 $5 $42 $14