Derivative Financial Instruments and Hedging Activities - Schedule of Derivative Instruments in Statement of Financial Position, Fair Value (Details) - USD ($) $ in Thousands	Feb. 28, 2021	Aug. 31, 2020
Derivative [Line Items]
Derivative Liability, Fair Value, Gross Liability	$ 579,671	$ 412,809

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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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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