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v3.25.3

Pensions (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Mar. 31, 2026 | Sep. 30, 2025 | Sep. 30, 2024
Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Net periodic benefit cost | [1] | $ 1.2 | $ 1.1 |  | $ 2.5 | $ 2.3
Pension |  |  |  |  |  |
Net Periodic Benefit Cost [Abstract] |  |  |  |  |  |
Service cost |  | 0.1 | 0.1 |  | 0.1 | 0.1
Interest cost |  | 2.2 | 2.2 |  | 4.6 | 4.5
Expected return on plan assets |  | (2.1) | (2.1) |  | (4.3) | (4.3)
Amortization of unrecognized net loss |  | 1.2 | 1.1 |  | 2.4 | 2.3
Net periodic benefit cost |  | $ 1.4 | $ 1.3 |  | 2.8 | $ 2.6
Pension | UNITED STATES |  |  |  |  |  |
Defined Benefit Plan, Additional Information [Abstract] |  |  |  |  |  |
Contribution U.S. pension plan |  |  |  |  | $ 0.0 |
Pension | UNITED STATES | Minimum |  |  |  |  |  |
Termination of U.S. Pension Plans [Abstract] |  |  |  |  |  |
Expected employer contribution during fiscal 2026 |  |  |  | $ 20.0 |  |
Pension | UNITED STATES | Maximum |  |  |  |  |  |
Termination of U.S. Pension Plans [Abstract] |  |  |  |  |  |
Expected employer contribution during fiscal 2026 |  |  |  | 25.0 |  |
Pension | UNITED STATES | Termination plan | Minimum |  |  |  |  |  |
Termination of U.S. Pension Plans [Abstract] |  |  |  |  |  |
Non-cash pension settlement charges |  |  |  | (120.0) |  |
Pension | UNITED STATES | Termination plan | Maximum |  |  |  |  |  |
Termination of U.S. Pension Plans [Abstract] |  |  |  |  |  |
Non-cash pension settlement charges |  |  |  | $ (125.0) |  |
[1] | Net periodic benefit cost for the Company’s pension and postretirement plans is exclusive of service cost.

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