Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Aug. 30, 2015	Aug. 31, 2014	Sep. 01, 2013
Statement of Comprehensive Income [Abstract]
NET INCOME INCLUDING NONCONTROLLING INTERESTS	$ 2,409	$ 2,088	$ 2,061
Foreign-currency translation adjustment and other, net	(1,063)	49	(278)
Comprehensive income	1,346	2,137	1,783
Less: Comprehensive income attributable to noncontrolling interests	14	33	22
COMPREHENSIVE INCOME ATTRIBUTABLE TO COSTCO	$ 1,332	$ 2,104	$ 1,761