Derivative Financial Instruments and Hedging Activities - Schedule of Pretax Gains (Losses) Recorded in Other Comprehensive Income (Loss) Relating to Cash Flow Hedges (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2026	Feb. 28, 2025	Feb. 28, 2026	Feb. 28, 2025
Commodity derivatives \| Cash Flow Hedging
Derivative [Line Items]
Pretax gains (losses) recorded in other comprehensive income relating to cash flow hedges	$ (537)	$ 6	$ (2,119)	$ 1,829

Amount, before tax and adjustments, of gain (loss) from increase (decrease) in value of excluded component of derivative designated and qualifying as hedge. Adjustments include, but are not limited to, reclassifications for sale and settlement, and amounts recognized under systematic and rational method.