Share-Based Payments (Details 1)	12 Months Ended
Apr. 30, 2023 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at May 1, 2022, number of options \| shares	727,742
Granted, number of options \| shares	113,970
Exercised, number of options \| shares	(207,576)
Cancelled, number of options \| shares	(27,658)
Outstanding at April 30, 2023, number of options \| shares	606,478
Exercisable at April 30, 2023, number of options \| shares	345,948
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding at May 1, 2022, weighted average exercise price (in dollars per share) \| $ / shares	$ 118.37
Granted, weighted average exercise price (in dollars per share) \| $ / shares	125.82
Exercised, weighted average exercise price (in dollars per share) \| $ / shares	113.14
Cancelled, weighted average exercise price (in dollars per share) \| $ / shares	123.40
Outstanding at April 30, 2023, weighted average exercise price (in dollars per share) \| $ / shares	121.33
Exercisable at April 30, 2023, weighted average exercise price (in dollars per share) \| $ / shares	$ 119.12

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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- Definition

Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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- Definition

Number of share options (or share units) exercised during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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