DERIVATIVES AND RISK MANAGEMENT (Derivative Assets) (Details) - USD ($) $ in Thousands		May. 31, 2015	Aug. 31, 2014
Derivatives, Fair Value [Line Items]
Derivative assets (other current assets)	[1]	$ 5,612	$ 2,900
Commodity | Designated
Derivatives, Fair Value [Line Items]
Derivative assets (other current assets)		16	42
Commodity | Not designated
Derivatives, Fair Value [Line Items]
Derivative assets (other current assets)		942	869
Foreign exchange | Designated
Derivatives, Fair Value [Line Items]
Derivative assets (other current assets)		1,414	136
Foreign exchange | Not designated
Derivatives, Fair Value [Line Items]
Derivative assets (other current assets)		$ 3,240	$ 1,853

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