Common Shares (Details) - shares shares in Millions	Oct. 31, 2025	Apr. 30, 2025
Common Shares Information
Common shares authorized	300.0	300.0
Common shares outstanding	106.7	106.4
Treasury shares outstanding	43.8	44.1
CommonStockSharesIssuedNotDisclosed	true

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

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- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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- References

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- Definition

Number of previously issued common shares repurchased by the issuing entity and held in treasury.

+ References

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