Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		8 Months Ended
	May 09, 2021	May 10, 2020	May 09, 2021	May 10, 2020
Statement of Comprehensive Income [Abstract]
NET INCOME INCLUDING NONCONTROLLING INTERESTS	$ 1,233	$ 852	$ 3,385	$ 2,655
Foreign-currency translation adjustment and other, net	54	(396)	411	(224)
Comprehensive income	1,287	456	3,796	2,431
Less: Comprehensive income attributable to noncontrolling interests	15	16	71	60
COMPREHENSIVE INCOME ATTRIBUTABLE TO COSTCO	$ 1,272	$ 440	$ 3,725	$ 2,371