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FAIR VALUE (Financial Assets and Financial Liabilities Measured at Fair Value on Recurring Basis) (Details) - Fair value, measurements, recurring - USD ($) $ in Thousands | May 31, 2018 | Aug. 31, 2017
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Money market investments |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Money market investments |  | $ 522,971 | $ 43,553
Commodity |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative assets |  | 901 | 767
Derivative liabilities |  | 80 | 3,251
Foreign exchange |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative assets |  | 1,573 | 1,367
Derivative liabilities |  | 1,550 | 5,259
Quoted Prices in Active Markets for Identical Assets (Level 1) | Money market investments |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Money market investments |  | 522,971 | 43,553
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commodity |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative assets |  | 901 | 767
Derivative liabilities |  | 80 | 3,251
Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreign exchange |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative assets |  | 0 | 0
Derivative liabilities |  | 0 | 0
Significant Other Observable Inputs (Level 2) | Money market investments |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Money market investments |  | 0 | 0
Significant Other Observable Inputs (Level 2) | Commodity |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative assets | [1] |  | 0
Derivative liabilities |  | 0 | 0
Significant Other Observable Inputs (Level 2) | Foreign exchange |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative assets |  | 1,573 | 1,367
Derivative liabilities |  | 1,550 | 5,259
Significant Unobservable Inputs (Level 3) | Money market investments |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Money market investments |  | 0 | 0
Significant Unobservable Inputs (Level 3) | Commodity |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative assets |  | 0 | 0
Derivative liabilities |  | 0 | 0
Significant Unobservable Inputs (Level 3) | Foreign exchange |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Derivative assets |  | 0 | 0
Derivative liabilities |  | $ 0 | $ 0
[1] | Derivative assets and liabilities classified as Level 1 are commodity futures contracts valued based on quoted market prices in the London Metal Exchange or New York Mercantile Exchange. Amounts in Level 2 are based on broker quotes in the over-the-counter market. Further discussion regarding the Company's use of derivative instruments and the classification of the assets and liabilities is included in Note 8, Derivatives and Risk Management.

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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