Condensed Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Feb. 12, 2017	Feb. 14, 2016	Feb. 12, 2017	Feb. 14, 2016
REVENUE
Net sales	$ 29,130	$ 27,567	$ 56,599	$ 54,194
Membership fees	636	603	1,266	1,196
Total revenue	29,766	28,170	57,865	55,390
OPERATING EXPENSES
Merchandise costs	25,927	24,469	50,215	48,090
Selling, general and administrative	2,980	2,835	5,920	5,641
Preopening expenses	15	10	37	36
Operating income	844	856	1,693	1,623
OTHER INCOME (EXPENSE)
Interest expense	(31)	(31)	(60)	(64)
Interest income and other, net	(4)	16	22	44
INCOME BEFORE INCOME TAXES	809	841	1,655	1,603
Provision for income taxes	288	286	579	561
Net income including noncontrolling interests	521	555	1,076	1,042
Net income attributable to noncontrolling interests	(6)	(9)	(16)	(16)
NET INCOME ATTRIBUTABLE TO COSTCO	$ 515	$ 546	$ 1,060	$ 1,026
NET INCOME PER COMMON SHARE ATTRIBUTABLE TO COSTCO:
Basic (in dollars per share)	$ 1.17	$ 1.24	$ 2.42	$ 2.34
Diluted (in dollars per share)	$ 1.17	$ 1.24	$ 2.41	$ 2.32
Shares used in calculation (000's)
Basic (shares)	439,127	439,648	438,567	438,990
Diluted (shares)	440,657	441,559	440,568	441,457
CASH DIVIDENDS DECLARED PER COMMON SHARE	$ 0.45	$ 0.40	$ 0.90	$ 0.80