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Capital Stock and Stock-Based Awards - Schedule of employee stock purchase plan activity (Details) - Employee Stock - $ / shares	12 Months Ended
	May 31, 2025	May 31, 2024	May 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued	109,015	79,458	80,897
Weighted average purchase price per share (in dollars per share)	$ 21.84	$ 32.38	$ 29.07

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- Definition

Weighted average price share of common stock issued during the period as a result of an employee stock purchase plan.

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