Derivative Financial Instruments and Hedging Activities - Fair Value of Commodity Derivative Instruments (Details) - USD ($) $ in Thousands	Feb. 28, 2023	Aug. 31, 2022
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	$ 299,868	$ 390,940
Derivative Asset, Fair Value, Gross Asset	448,564	517,090
Cash Flow Hedging \| Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	590	11,818
Derivative Asset, Fair Value, Gross Asset	$ 7,167	$ 27,154

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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