Accrued Expenses (Details) - USD ($) $ in Thousands	9 Months Ended
	May 31, 2021	May 31, 2020	Aug. 31, 2020
Accrued Liabilities, Current [Abstract]
Contract liabilities	$ 512,131		$ 496,219
Accrued compensation and employee benefits	762,551		703,250
Other accrued expenses	2,215,798		2,012,059
Accrued expenses	3,490,480		$ 3,211,528
Revenue recognized during period that was included in contract liability balance	$ 306,000	$ 260,900