Revenue - Summary of Cumulative Effect Adjustment (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
Other assets	173,715		172,574
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
Adjustments due to adoption of ASU 2014-09 | ASU 2014-09
Assets
Contract assets		591,616
Inventories, net		(461,271)
Prepaid expenses and other current assets		(37,271)
Deferred income taxes		(8,325)
Liabilities
Contract liabilities		852,102
Deferred income		(691,365)
Other accrued expenses		(121,568)
Deferred income taxes		2,977
Equity
Retained earnings		$ 42,602