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Derivative Financial Instruments and Hedging Activities - Fair Value of Commodity Derivative Instruments (Details) - USD ($) $ in Thousands	Nov. 30, 2020	Aug. 31, 2020
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	$ 564,364	$ 412,809
Derivative Asset, Fair Value, Gross Asset	674,702	358,300
Cash Flow Hedging | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	2,313	8,821
Derivative Asset, Fair Value, Gross Asset	$ 29,518	$ 34,052

X

- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other 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 assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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- Definition

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.

+ References

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