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Pension and Other Postretirement Benefits
 6 Months Ended
Oct. 31, 2025
Retirement Benefits [Abstract]  
Pension and Other Postretirement Benefits Pension and Other Postretirement Benefits
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 EndedSix Months Ended
October 31,October 31,
(Dollars in millions)2024202520242025
Service cost$4 $4 $8 $7 
Interest cost9 7 18 15 
Expected return on plan assets(10)(8)(19)(17)
Amortization of:    
Prior service cost— 1 — 1 
Net actuarial loss
1 1 1 2 
Settlement charge— 2 — 21 
Net cost$4 $7 $8 $29 
During the three months and six months ended October 31, 2025, we recognized pension settlement charges of $2 million and $21 million, respectively, triggered by fiscal year-to-date lump-sum payments under certain pension plans surpassing total annual service and interest cost for those plans.