Segment Reporting Segment Reporting Information by Item Category (Details) - USD ($) $ in Millions	3 Months Ended
	Nov. 25, 2018	Nov. 26, 2017
Disaggregation of Revenue [Line Items]
Total Revenue	$ 35,069	$ 31,809
Food and Sundries [Member]
Disaggregation of Revenue [Line Items]
Total Revenue	13,641
Hardlines [Member]
Disaggregation of Revenue [Line Items]
Total Revenue	5,840
Fresh Food [Member]
Disaggregation of Revenue [Line Items]
Total Revenue	4,293
Softlines [Member]
Disaggregation of Revenue [Line Items]
Total Revenue	4,123
Ancillary
Disaggregation of Revenue [Line Items]
Total Revenue	6,414
Net sales
Disaggregation of Revenue [Line Items]
Total Revenue	$ 34,311	$ 31,117