Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Nov. 22, 2020	Nov. 24, 2019
Statement of Comprehensive Income [Abstract]
NET INCOME INCLUDING NONCONTROLLING INTERESTS	$ 1,181	$ 856
Foreign-currency translation adjustment and other, net	209	125
Comprehensive income	1,390	981
Less: Comprehensive income attributable to noncontrolling interests	28	22
COMPREHENSIVE INCOME ATTRIBUTABLE TO COSTCO	$ 1,362	$ 959