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DERIVATIVES AND RISK MANAGEMENT (Commodity Contract Commitments) (Details)
6 Months Ended
Feb. 29, 2016
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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