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Marketable Securities (Detail) - USD ($) $ in Thousands	May 31, 2023	May 31, 2022
Marketable Securities, Current	$ 82,329	$ 336,578
Commercial Paper | Maturing in 0 - 90 days
Marketable Securities, Current	22,552	106,497
Commercial Paper | Maturing in 91 - 180 days
Marketable Securities, Current	35,692	61,373
Commercial Paper | Maturing in 1 - 2 years
Marketable Securities, Current	317	77,002
Certificates of Deposit | Maturing in 181 days -1 year
Marketable Securities, Current	$ 23,768	$ 91,706

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