DERIVATIVES AND RISK MANAGEMENT (Commodity Contract Commitments) (Details) - 9 months ended May. 31, 2015	BTU t
Aluminum \| Long
Derivative [Line Items]
Commodity contract commitments	3,746
Aluminum \| Short
Derivative [Line Items]
Commodity contract commitments	325
Copper \| Long
Derivative [Line Items]
Commodity contract commitments	826
Copper \| Short
Derivative [Line Items]
Commodity contract commitments	5,364
Zinc \| Long
Derivative [Line Items]
Commodity contract commitments	29
Natural Gas \| Long
Derivative [Line Items]
Energy contract commitments \| BTU	180,000,000,000

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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