Derivative Financial Instruments and Hedging Activities Pretax Gains (Losses) On Derivatives Not Accounted For As Hedging Instruments (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 29, 2016	Feb. 28, 2015	Feb. 29, 2016	Feb. 28, 2015
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 51,595	$ 44,753	$ 94,144	$ 120,808
Commodity and Freight Derivatives [Member] | Cost of goods sold
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	54,971	38,861	90,017	112,544
Foreign Exchange Contract [Member] | Cost of goods sold
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(10,481)	6,118	(9,798)	16,442
Foreign Exchange Contract [Member] | Selling, General and Administrative Expenses [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	7,605	(271)	15,128	(8,252)
Interest rate derivatives | Interest, net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (500)	$ 45	$ (1,203)	$ 74