Disaggregated Revenue by Geographic Location (Detail) - USD ($) $ in Millions	12 Months Ended
May 31, 2026	May 31, 2025	May 31, 2024
Revenues by Geographic Location [Line Items]
Total Revenue	$ 870.4	$ 894.7	$ 924.2
Domestic
Revenues by Geographic Location [Line Items]
Total Revenue	425.1	446.0	465.2
International
Revenues by Geographic Location [Line Items]
Total Revenue	$ 445.3	$ 448.7	$ 459.0

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details