Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Nov. 21, 2021	Nov. 22, 2020
Statement of Comprehensive Income [Abstract]
NET INCOME INCLUDING NONCONTROLLING INTERESTS	$ 1,345	$ 1,181
Foreign-currency translation adjustment and other, net	(72)	209
Comprehensive income	1,273	1,390
Less: Comprehensive income attributable to noncontrolling interests	23	28
COMPREHENSIVE INCOME ATTRIBUTABLE TO COSTCO	$ 1,250	$ 1,362