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DERIVATIVES AND RISK MANAGEMENT (Commodity Contract Commitments) (Details) | 9 Months Ended
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May 31, 2018 t
Aluminum | Long |
Derivative [Line Items] |
Commodity contract commitments | 6,125
Aluminum | Short |
Derivative [Line Items] |
Commodity contract commitments | 3,075
Copper | Long |
Derivative [Line Items] |
Commodity contract commitments | 363
Copper | Short |
Derivative [Line Items] |
Commodity contract commitments | 6,021

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