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Cash And Marketable Securities - Schedule Of Classification And Maturities Of Marketable Securities (Detail) - USD ($) $ in Thousands | Feb. 28, 2022 | May 31, 2021
--- | --- | ---
Marketable Securities, Current | $ 335,560 | $ 305,485
Commercial Paper | Maturing in 0 - 90 days |  |
Marketable Securities, Current | 94,740 | 106,631
Commercial Paper | Maturing in 91 - 180 days |  |
Marketable Securities, Current | 85,373 | 78,727
Commercial Paper | Maturing in 181 days - 1 year |  |
Marketable Securities, Current | 57,310 | 87,590
Commercial Paper | Maturing in 1 - 2 years |  |
Marketable Securities, Current | 97,887 | 26,752
Certificates of Deposit | Maturing in 0 - 90 days |  |
Marketable Securities, Current | 250 | 3,262
Certificates of Deposit | Maturing in 91 - 180 days |  |
Marketable Securities, Current | 0 | 1,260
Certificates of Deposit | Maturing in 181 days - 1 year |  |
Marketable Securities, Current | 0 | 1,263
Certificates of Deposit | Maturing in 1 - 2 years |  |
Marketable Securities, Current | $ 0 | $ 0

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