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Fair Value and Derivatives - Schedule of Gain Loss From Derivatives Not Designated As Hedging Instruments Statements of Financial Performance And Location (Detail) - USD ($) $ in Millions | 12 Months Ended
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May 31, 2026 | May 31, 2025 | May 31, 2024
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member] | Other Net [Member] |  |  |
Derivative [Line Items] |  |  |
Foreign currency forward contracts | $ (0.8) | $ 0.5 | $ 0.1

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- Definition Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4CC -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4CC + Details
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