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DERIVATIVES AND RISK MANAGEMENT (Commodity Contract Commitments) (Details)
3 Months Ended
Nov. 30, 2015
t
Aluminum | Long  
Derivative [Line Items]  
Commodity contract commitments 5,963
Copper | Long  
Derivative [Line Items]  
Commodity contract commitments 702
Copper | Short  
Derivative [Line Items]  
Commodity contract commitments 4,150
Zinc | Long  
Derivative [Line Items]  
Commodity contract commitments 15