Stock Repurchase Program - Additional Information (Detail) - USD ($) shares in Thousands	12 Months Ended			236 Months Ended
	Aug. 26, 2017	Aug. 27, 2016	Aug. 29, 2015	Aug. 26, 2017
Stock Repurchase Program [Line Items]
Stock repurchased cumulative, shares	1,495	1,903	2,010	142,300
Purchase of treasury stock	$ 1,071,649,000	$ 1,452,462,000	$ 1,271,416,000	$ 17,826,000,000
Stock repurchase authorized amended value	$ 18,650,000,000	$ 17,900,000,000		$ 18,650,000,000
Share of treasury stock retired	1,800	2,100
Retained Deficit [Member]
Stock Repurchase Program [Line Items]
Retirement of treasury shares	$ 1,321,070,000	$ 1,424,455,000	1,049,856,000
Additional Paid-In Capital [Member]
Stock Repurchase Program [Line Items]
Retirement of treasury shares	$ 64,943,000	$ 67,023,000	$ 57,403,000