Accrued Expenses (Details) - USD ($) $ in Thousands	Feb. 28, 2019	Sep. 01, 2018	Aug. 31, 2018
Accrued Liabilities, Current [Abstract]
Contract liabilities	$ 583,300
Deferred income	0	$ 0	$ 691,365
Accrued compensation and employee benefits	472,621		570,400
Other accrued expenses	1,620,683	$ 1,041,371	1,000,979
Accrued expenses	$ 2,676,604		$ 2,262,744