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Organization, Basis of Presentation and Significant Accounting Policies - Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
	Sep. 01, 2018	Feb. 28, 2019	Nov. 30, 2018	Feb. 28, 2018	Feb. 28, 2019	Feb. 28, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase (decrease) to cost of goods sold		$ 6,056,126		$ 6,845,184	$ 14,069,774	$ 14,556,576
Increase to marketing, general and administrative expense		177,429		187,558	339,925	327,904
Increase to other income		11,763		12,544	35,485	38,739
Overall decrease to revenues		(6,483,539)		(6,980,153)	(14,967,828)	(15,012,037)
Accounting Standards Update 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase (decrease) to cost of goods sold				335		670
Increase to marketing, general and administrative expense				845		1,691
Increase to other income				$ 1,180		$ 2,361
Accounting Standards Update 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification from AOCI	$ 4,700		$ 0
Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of adoption for all contracts and customers that had not been completed as of the adoption date	$ 1,000
Overall decrease to revenues		(2,299,273)			(5,522,859)
Difference between Revenue Guidance in Effect before and after Topic 606 \| Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Overall decrease to revenues		$ 9,600			$ 22,600