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Derivative Financial Instruments and Hedging Activities - Pretax Gains (Losses) On Derivatives Not Accounted For As Hedging Instruments (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands | 3 Months Ended
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Nov. 30, 2021 | Nov. 30, 2020
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | $ (544) | $ (176,549)
Commodity derivatives | Cost of goods sold |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | 31,598 | (201,362)
Foreign exchange derivatives | Cost of goods sold |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | (32,494) | 22,641
Foreign exchange derivatives | Selling, General and Administrative Expenses [Member] |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | (1,194) | 608
Embedded Derivative Financial Instruments [Member] | Other Income [Member] |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | $ 1,546 | $ 1,564

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