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DERIVATIVES AND RISK MANAGEMENT (Commodity Contract Commitments) (Details) | 6 Months Ended
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Feb. 29, 2016 t
Aluminum | Long |
Derivative [Line Items] |
Commodity contract commitments | 5,141
Aluminum | Short |
Derivative [Line Items] |
Commodity contract commitments | 250
Copper | Long |
Derivative [Line Items] |
Commodity contract commitments | 294
Copper | Short |
Derivative [Line Items] |
Commodity contract commitments | 4,423
Zinc | Long |
Derivative [Line Items] |
Commodity contract commitments | 7

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