Derivative Financial Instruments and Hedging Activities - Commodity Derivatives (Details) - Commodity derivatives - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2023	Feb. 28, 2022
Cost of goods sold
Derivative [Line Items]
Pretax gains (losses) reclassified from AOCI related to cash flow hedges	$ (9,129)	$ 5,005	$ (16,058)	$ 18,259
Cash Flow Hedging
Derivative [Line Items]
Pretax gains (losses) recorded in OCI related to cash flow hedges	$ 20,830	$ (1,977)	$ (8,759)	$ (15,273)