Revenue - Effect of New Revenue Guidance, Impact on Balance Sheet (Details) - USD ($) $ in Thousands	Feb. 28, 2019	Sep. 01, 2018	Aug. 31, 2018
ASSETS
Contract assets	$ 832,889	$ 591,616	$ 0
Inventories, net	3,248,273	2,996,435	3,457,706
Prepaid expenses and other current assets	532,223	1,103,729	1,141,000
Deferred income taxes	194,015	209,927	218,252
Liabilities
Contract liabilities	583,300	690,142
Deferred income	0	0	691,365
Other accrued expenses	1,620,683	1,041,371	1,000,979
Deferred income taxes	117,547	117,362	114,385
Equity
Retained earnings	1,966,100	$ 1,802,699	1,760,097
Balance without the adoption of ASU 2014-09
ASSETS
Contract assets	0		0
Inventories, net	3,943,077		3,457,706
Prepaid expenses and other current assets	537,801		1,141,000
Deferred income taxes	198,444		218,252
Liabilities
Contract liabilities	0		0
Deferred income	571,149		691,365
Other accrued expenses	1,616,750		1,000,979
Deferred income taxes	113,426		114,385
Equity
Retained earnings	$ 1,858,227		$ 1,760,097