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v3.25.3

Pensions and Other Postretirement Benefits | 6 Months Ended
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Oct. 31, 2025
Retirement Benefits [Abstract] |
Pensions and Other Postretirement Benefits | The following table summarizes our net periodic benefit cost for defined benefit pension and other postretirement benefit plans.
| Three Months Ended October 31,
| Defined Benefit Pension Plans |  | Other Postretirement Benefits
| 2025 |  | 2024 |  | 2025 |  | 2024
Service cost | $ | 0.1 |  |  | $ | 0.3 |  |  | $ | 0.1 |  |  | $ | 0.1 |
Interest cost | 3.8 |  |  | 4.4 |  |  | 0.6 |  |  | 0.6 |
Expected return on plan assets | (3.3) |  |  | (3.1) |  |  | — |  |  | — |
Amortization of net actuarial loss (gain) | 1.0 |  |  | 1.1 |  |  | (0.4) |  |  | (0.5) |
Amortization of prior service cost (credit) | 0.1 |  |  | — |  |  | (0.2) |  |  | (0.1) |
Net periodic benefit cost | $ | 1.7 |  |  | $ | 2.7 |  |  | $ | 0.1 |  |  | $ | 0.1 |
| Six Months Ended October 31,
| Defined Benefit Pension Plans |  | Other Postretirement Benefits
| 2025 |  | 2024 |  | 2025 |  | 2024
Service cost | $ | 0.3 |  |  | $ | 0.4 |  |  | $ | 0.3 |  |  | $ | 0.3 |
Interest cost | 7.6 |  |  | 8.8 |  |  | 1.2 |  |  | 1.3 |
Expected return on plan assets | (6.7) |  |  | (6.2) |  |  | — |  |  | — |
Amortization of net actuarial loss (gain) | 2.0 |  |  | 2.2 |  |  | (0.9) |  |  | (1.0) |
Amortization of prior service cost (credit) | 0.1 |  |  | 0.1 |  |  | (0.3) |  |  | (0.3) |
Net periodic benefit cost | $ | 3.3 |  |  | $ | 5.3 |  |  | $ | 0.3 |  |  | $ | 0.3 |
We made direct benefit payments of $1.7 for both the six months ended October 31, 2025 and 2024, respectively.

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