Condensed Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Millions	3 Months Ended		8 Months Ended
	May. 08, 2016	May. 10, 2015	May. 08, 2016	May. 10, 2015
REVENUE
Net sales	$ 26,151	$ 25,517	$ 80,345	$ 78,673
Membership fees	618	584	1,814	1,748
Total revenue	26,769	26,101	82,159	80,421
OPERATING EXPENSES
Merchandise costs	23,162	22,687	71,252	69,969
Selling, general and administrative	2,731	2,579	8,372	7,946
Preopening expenses	18	14	54	38
Operating income	858	821	2,481	2,468
OTHER INCOME (EXPENSE)
Interest expense	(30)	(31)	(94)	(84)
Interest income and other, net	7	9	51	64
INCOME BEFORE INCOME TAXES	835	799	2,438	2,448
Provision for income taxes	286	280	847	817
Net income including noncontrolling interests	549	519	1,591	1,631
Net income attributable to noncontrolling interests	(4)	(3)	(20)	(21)
NET INCOME ATTRIBUTABLE TO COSTCO	$ 545	$ 516	$ 1,571	$ 1,610
NET INCOME PER COMMON SHARE ATTRIBUTABLE TO COSTCO:
Basic (in dollars per share)	$ 1.24	$ 1.17	$ 3.58	$ 3.66
Diluted (in dollars per share)	$ 1.24	$ 1.17	$ 3.56	$ 3.64
Shares used in calculation (000's)
Basic (shares)	438,815	440,070	438,930	439,733
Diluted (shares)	441,066	443,132	441,321	442,721
Cash dividends declared per common share	$ 0.45	$ 0.40	$ 1.25	$ 6.11