Pension and Other Postretirement Benefits (Expected Benefit Payments) (Details) $ in Millions	Apr. 30, 2024 USD ($)
Pension Benefits [Member]
Expected benefit payments over the next 10 years
2025	$ 54
2026	54
2027	55
2028	56
2029	57
2030 – 2034	286
Medical and Life Insurance Benefits [Member]
Expected benefit payments over the next 10 years
2025	3
2026	3
2027	3
2028	3
2029	3
2030 – 2034	$ 14

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- Definition

Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

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- Definition

Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

+ References

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- Definition

Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year.

+ References

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Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year.

+ References

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