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Derivative Financial Instruments and Hedging Activities - Schedule of Pretax Gains (Losses) Related to Cash Flow Hedges Reclassified from Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
May 31, 2026
May 31, 2025
May 31, 2026
May 31, 2025
Commodity derivatives | Location, Statement of Income, Balance [Axis]: us-gaap:CostOfGoodsAndServicesSold        
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]        
Pretax gains reclassified from accumulated other comprehensive loss $ 1,033 $ 2,485 $ 4,928 $ 10,582