Derivative Financial Instruments and Hedging Activities - Schedule of Summary of Derivative Hedges (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Nov. 30, 2025	Nov. 30, 2024	Nov. 30, 2025	Nov. 30, 2024	May 31, 2025
Derivative [Line Items]
Notional Amount	$ 2.9	$ (0.3)	$ 5.5	$ (3.1)
Commodity Contracts | Derivatives Not Designated As Hedging Instruments
Derivative [Line Items]
Notional Amount	12.0		$ 12.0		$ 16.4
Commodity Contracts | Minimum | Derivatives Not Designated As Hedging Instruments
Derivative [Line Items]
Maturity Date			Dec. 31, 2025		Jun. 30, 2025
Commodity Contracts | Maximum | Derivatives Not Designated As Hedging Instruments
Derivative [Line Items]
Maturity Date			Feb. 28, 2027		Sep. 30, 2026
Foreign Currency Exchange Contracts | Derivatives Not Designated As Hedging Instruments
Derivative [Line Items]
Notional Amount					$ (3.6)
Foreign Currency Exchange Contracts | Minimum | Derivatives Not Designated As Hedging Instruments
Derivative [Line Items]
Maturity Date					Jun. 30, 2025
Cash Flow Hedges | Commodity Contracts
Derivative [Line Items]
Notional Amount	6.9		$ 6.9		$ (5.6)
Cash Flow Hedges | Commodity Contracts | Minimum
Derivative [Line Items]
Maturity Date			Dec. 31, 2025		Jun. 30, 2025
Cash Flow Hedges | Commodity Contracts | Maximum
Derivative [Line Items]
Maturity Date			Sep. 30, 2026		Sep. 30, 2026
Cash Flow Hedges | Foreign Currency Exchange Contracts
Derivative [Line Items]
Notional Amount	10.0		$ 10.0		$ 10.3
Cash Flow Hedges | Foreign Currency Exchange Contracts | Minimum
Derivative [Line Items]
Maturity Date			Dec. 31, 2025		Jun. 30, 2025
Cash Flow Hedges | Foreign Currency Exchange Contracts | Maximum
Derivative [Line Items]
Maturity Date			Sep. 30, 2026		Mar. 31, 2026
Cash Flow Hedges | Interest Rate Contracts
Derivative [Line Items]
Notional Amount	$ 6.9		$ 6.9
Cash Flow Hedges | Interest Rate Contracts | Minimum
Derivative [Line Items]
Maturity Date			May 31, 2026
Cash Flow Hedges | Interest Rate Contracts | Maximum
Derivative [Line Items]
Maturity Date			Mar. 31, 2030