Condensed Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Millions	3 Months Ended		8 Months Ended
	May 07, 2017	May 08, 2016	May 07, 2017	May 08, 2016
REVENUE
Net sales	$ 28,216	$ 26,151	$ 84,815	$ 80,345
Membership fees	644	618	1,910	1,814
Total revenue	28,860	26,769	86,725	82,159
OPERATING EXPENSES
Merchandise costs	24,970	23,162	75,185	71,252
Selling, general and administrative	2,907	2,731	8,827	8,372
Preopening expenses	15	18	52	54
Operating income	968	858	2,661	2,481
OTHER INCOME (EXPENSE)
Interest expense	(21)	(30)	(81)	(94)
Interest income and other, net	18	7	40	51
INCOME BEFORE INCOME TAXES	965	835	2,620	2,438
Provision for income taxes	259	286	838	847
Net income including noncontrolling interests	706	549	1,782	1,591
Net income attributable to noncontrolling interests	(6)	(4)	(22)	(20)
NET INCOME ATTRIBUTABLE TO COSTCO	$ 700	$ 545	$ 1,760	$ 1,571
NET INCOME PER COMMON SHARE ATTRIBUTABLE TO COSTCO:
Basic (in dollars per share)	$ 1.59	$ 1.24	$ 4.01	$ 3.58
Diluted (in dollars per share)	$ 1.59	$ 1.24	$ 3.99	$ 3.56
Shares used in calculation (000's)
Basic (shares)	438,817	438,815	438,650	438,930
Diluted (shares)	441,056	441,066	440,745	441,321
CASH DIVIDENDS DECLARED PER COMMON SHARE	$ 7.50	$ 0.45	$ 8.40	$ 1.25