Revenue - Effect of New Revenue Guidance, Impact on Balance Sheet (Details) - USD ($) $ in Thousands	Nov. 30, 2018	Sep. 01, 2018	Aug. 31, 2018
ASSETS
Contract assets	$ 761,405	$ 591,616	$ 0
Inventories, net	3,214,513	2,996,435	3,457,706
Prepaid expenses and other current assets	662,811	1,103,729	1,141,000
Deferred income taxes	216,209	209,927	218,252
Liabilities
Contract liabilities	709,258	852,102
Deferred income	0	0	691,365
Other accrued expenses	1,256,877	879,411	1,000,979
Deferred income taxes	116,804	117,362	114,385
Equity
Retained earnings	1,911,451	$ 1,802,699	1,760,097
Balance without the adoption of ASU 2014-09
ASSETS
Contract assets	0		0
Inventories, net	3,860,306		3,457,706
Prepaid expenses and other current assets	666,992		1,141,000
Deferred income taxes	223,949		218,252
Liabilities
Contract liabilities	0		0
Deferred income	526,496		691,365
Other accrued expenses	1,418,483		1,000,979
Deferred income taxes	112,346		114,385
Equity
Retained earnings	$ 1,833,374		$ 1,760,097