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Derivative Financial Instruments and Hedging Activities - Fair Value of Commodity Derivative Instruments (Details) - USD ($)
$ in Thousands
Feb. 29, 2024
Aug. 31, 2023
Derivatives, Fair Value [Line Items]    
Derivative Liability, Fair Value, Gross Liability $ 278,496 $ 362,930
Derivative Asset, Fair Value, Gross Asset 268,317 312,842
Cash Flow Hedging | Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Derivative Liability, Fair Value, Gross Liability 845 5,345
Derivative Asset, Fair Value, Gross Asset $ 5,518 $ 8,395