Derivative Financial Instruments and Hedging Activities - Schedule of Derivatives Designated as Cash Flow Hedging Instruments (Detail) - USD ($) $ in Millions	12 Months Ended
	May 31, 2024	May 31, 2023
Derivative [Line Items]
Gain (Loss) Recognized in OCI	$ 1.6	$ (10.1)
Gain (Loss) Reclassified from AOCI into Net Earnings	$ 8.3	$ (14.6)
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent	Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent
Commodity Contracts
Derivative [Line Items]
Gain (Loss) Recognized in OCI	$ 1.6	$ (10.1)
Gain (Loss) Reclassified from AOCI into Net Earnings	$ 8.3	$ (14.6)