Segment Reporting Information by Item Category (Detail)	12 Months Ended
	Aug. 28, 2016	Aug. 30, 2015	Aug. 31, 2014
Foods
Revenue from External Customer [Line Items]
Percentage of net sales	22.00%	22.00%	22.00%
Sundries
Revenue from External Customer [Line Items]
Percentage of net sales	21.00%	21.00%	21.00%
Hardlines
Revenue from External Customer [Line Items]
Percentage of net sales	16.00%	16.00%	16.00%
Fresh Foods
Revenue from External Customer [Line Items]
Percentage of net sales	14.00%	14.00%	13.00%
Softlines
Revenue from External Customer [Line Items]
Percentage of net sales	12.00%	11.00%	11.00%
Other
Revenue from External Customer [Line Items]
Percentage of net sales	15.00%	16.00%	17.00%