Derivative Financial Instruments and Hedging Activities - Schedule of Gain (Loss) Recognized in Earnings for Economic (Non-Designated) Derivative Financial Instruments (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2026	Feb. 28, 2025	Feb. 28, 2026	Feb. 28, 2025
Derivative [Line Items]
Gain (Loss) Recognized in Earnings	$ 13.4	$ 0.0	$ 18.9	$ (3.1)
Commodity Contracts | Cost of Sales
Derivative [Line Items]
Gain (Loss) Recognized in Earnings	2.6	0.2	8.1	(2.9)
Foreign Currency Exchange Contracts | Miscellaneous Income (Expense), Net
Derivative [Line Items]
Gain (Loss) Recognized in Earnings	$ 10.8	$ (0.2)	$ 10.8	$ (0.2)