Pensions and Other Postretirement Benefits (Details 6) - Defined Benefit Pension Plans - USD ($) $ in Millions	Apr. 30, 2025	Apr. 30, 2024
Additional information related to the Company's defined benefit pension plans
Accumulated benefit obligation for all pension plans	$ 331.7	$ 345.2
Plans with an accumulated benefit obligation in excess of plan assets:
Accumulated benefit obligation	267.7	276.7
Fair value of plan assets	195.8	205.3
Plans with a projected benefit obligation in excess of plan assets:
Projected benefit obligation	267.7	276.7
Fair value of plan assets	$ 195.8	$ 205.3

Additional information related to company's defined benefit pension plans.

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Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

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-Topic 715
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-Name Accounting Standards Codification
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Amount of plan asset for defined benefit pension plan with projected benefit obligation in excess of plan assets.

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Amount of projected benefit obligation for defined benefit pension plan with projected benefit obligation in excess of plan assets.

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Amount of accumulated benefit obligation for defined benefit plan with accumulated benefit obligation in excess of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
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-Paragraph 17
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-URI https://asc.fasb.org/1943274/2147480482/715-20-55-17

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Amount of plan asset for defined benefit plan with accumulated benefit obligation in excess of plan assets.

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