DERIVATIVES AND RISK MANAGEMENT (Derivative Assets) (Details) - USD ($) $ in Thousands		Nov. 30, 2015	Aug. 31, 2015
Derivatives, Fair Value [Line Items]
Derivative assets (other current assets)	[1]	$ 3,524	$ 5,453
Commodity | Designated
Derivatives, Fair Value [Line Items]
Derivative assets (other current assets)		0	19
Commodity | Not designated
Derivatives, Fair Value [Line Items]
Derivative assets (other current assets)		1,826	846
Foreign exchange | Designated
Derivatives, Fair Value [Line Items]
Derivative assets (other current assets)		645	1,500
Foreign exchange | Not designated
Derivatives, Fair Value [Line Items]
Derivative assets (other current assets)		$ 1,053	$ 3,088

[1] Derivative assets and liabilities do not include the hedged items designated as fair value hedges.