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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, 2023	May 31, 2022	May 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued	80,897	59,322	67,097
Weighted average purchase price per share (in dollars per share)	$ 29.07	$ 32.52	$ 22.19

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- Definition

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