Derivatives Derivative Assets and Liabilities Not Designated as Hedging Instruments (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2016	Aug. 31, 2015	Aug. 31, 2014
Derivative [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (67,268)	$ 155,972	$ 123,180
Commodity and Freight Derivatives [Member] | Cost of Goods Sold [Member]
Derivative [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(49,975)	143,314	128,992
Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative, Notional Amount	802,200	1,300,000
Foreign Exchange Contract [Member] | Cost of Goods Sold [Member]
Derivative [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(10,904)	8,962	(4,920)
Foreign Exchange Contract [Member] | Marketing, General and Administrative Expenses [Member]
Derivative [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(97)	3,589	(1,006)
Interest Rate Contract [Member] | Interest Expense, Net [Member]
Derivative [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (6,292)	$ 107	$ 114