DERIVATIVES AND RISK MANAGEMENT (Commodity Contract Commitments) (Details)	9 Months Ended
May 31, 2017 t
Aluminum \| Long
Derivative [Line Items]
Commodity contract commitments	1,925
Aluminum \| Short
Derivative [Line Items]
Commodity contract commitments	25
Copper \| Long
Derivative [Line Items]
Commodity contract commitments	555
Copper \| Short
Derivative [Line Items]
Commodity contract commitments	5,250
Zinc \| Long
Derivative [Line Items]
Commodity contract commitments	7

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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