Related Party Transactions - Schedule of reconciliation of total net transfers to and from the parent to the corresponding amount presented in the consolidated and combined statement of cash flows (Detail) - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2025	Aug. 31, 2024
Related Party Transaction [Line Items]
Less: depreciation expense allocated from the Former Parent	$ 20.3	$ 16.2
Stock-based compensation	$ 7.4	$ 2.4