Related Party Transactions - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Nov. 30, 2025	Nov. 30, 2024	Nov. 30, 2025	Nov. 30, 2024	May 31, 2025
Related Party Transaction [Line Items]
Net sales	$ 871.9	$ 739.0	$ 1,744.8	$ 1,573.0
Former Parent
Related Party Transaction [Line Items]
Net sales	18.9	$ 14.9	37.1	$ 30.8
Accounts receivable	$ 6.7		$ 6.7		$ 9.2

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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