Derivative Instruments and Hedging Activities - Schedule of Derivatives Designated as Cash Flow Hedging Instruments (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2021	Nov. 30, 2020
Derivative [Line Items]
Gain (Loss) Recognized in OCI	$ (20,942)	$ 16,381	$ 14,279	$ 16,765
Gain (Loss) Reclassified from AOCI into Net Earnings	47,736	(3,160)	83,155	(6,028)
Commodity Contracts
Derivative [Line Items]
Gain (Loss) Recognized in OCI	(21,002)	16,381	14,218	16,765
Commodity Contracts | Cost of Sales
Derivative [Line Items]
Gain (Loss) Reclassified from AOCI into Net Earnings	47,706	(2,690)	83,165	(5,331)
Interest Rate Contract | Interest Expense
Derivative [Line Items]
Gain (Loss) Reclassified from AOCI into Net Earnings	27	$ (470)	(13)	$ (697)
Foreign Currency Exchange Contracts
Derivative [Line Items]
Gain (Loss) Recognized in OCI	60		61
Foreign Currency Exchange Contracts | Miscellaneous Income Net
Derivative [Line Items]
Gain (Loss) Reclassified from AOCI into Net Earnings	$ 3		$ 3