Derivative Financial Instruments and Hedging Activities - Commodity Derivatives (Details) - Commodity derivatives - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 28, 2022	Feb. 28, 2021
Cost of goods sold
Derivative [Line Items]
Pretax gains (losses) reclassified from AOCI related to cash flow hedges	$ 5,005	$ 4,082	$ 18,259	$ 16,755
Cash Flow Hedging
Derivative [Line Items]
Pretax gains (losses) recorded in OCI related to cash flow hedges	$ (1,977)	$ (2,084)	$ (15,273)	$ (110)