Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		8 Months Ended
	May 10, 2020	May 12, 2019	May 10, 2020	May 12, 2019
Statement of Comprehensive Income [Abstract]
NET INCOME INCLUDING NONCONTROLLING INTERESTS	$ 852	$ 916	$ 2,655	$ 2,594
Foreign-currency translation adjustment and other, net	(396)	(42)	(224)	(124)
Comprehensive income	456	874	2,431	2,470
Less: Comprehensive income attributable to noncontrolling interests	16	9	60	30
COMPREHENSIVE INCOME ATTRIBUTABLE TO COSTCO	$ 440	$ 865	$ 2,371	$ 2,440