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DERIVATIVES AND RISK MANAGEMENT (Derivatives Not Designated as Hedging Instruments) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Aug. 31, 2018 | Aug. 31, 2017 | Aug. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain (loss) before taxes for derivatives not designated as hedging instruments | $ 7,103 | $ (14,542) | $ 14,426
Commodity | Cost of goods sold |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain (loss) before taxes for derivatives not designated as hedging instruments | 7,043 | (9,095) | 2,675
Foreign exchange | Cost of goods sold |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain (loss) before taxes for derivatives not designated as hedging instruments | (50) | (47) | 19
Foreign exchange | SG&A expenses |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain (loss) before taxes for derivatives not designated as hedging instruments | $ 110 | $ (5,400) | $ 11,732

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4CC -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL109998890-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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