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Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
	Sep. 01, 2014	Aug. 31, 2017	Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2015
Property, Plant and Equipment [Line Items]
Capital expenditures			$ 444,397	$ 692,780	$ 1,186,790
Cost to build, estimate	$ 3,000,000
Impairment of Long-Lived Assets to be Disposed of				116,500
Property, plant and equipment, gross		$ 8,901,785	8,901,785	8,829,520
Less accumulated depreciation and amortization		3,545,351	3,545,351	3,341,197
Property, plant and equipment		5,356,434	5,356,434	5,488,323
Capital leases [Member]
Property, Plant and Equipment [Line Items]
Capital expenditures			39,600
Land and Land Improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		357,829	357,829	266,016
Building
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		1,030,478	1,030,478	1,040,943
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		6,950,435	6,950,435	6,747,865
Office and other
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		235,361	235,361	250,879
Construction in progress
Property, Plant and Equipment [Line Items]
Impairment of Long-Lived Assets to be Disposed of				94,300
Property, plant and equipment, gross		327,682	327,682	523,817
Ag [Member]
Property, Plant and Equipment [Line Items]
Capital expenditures			$ 146,139	$ 260,865	$ 417,950
Reserve and impairment charges [Member] | Ag [Member]
Property, Plant and Equipment [Line Items]
Impairment of Long-Lived Assets to be Disposed of		$ 30,400

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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