Segment Reporting Segment Reporting Information by Item Category (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Feb. 16, 2020	Feb. 17, 2019	Feb. 16, 2020	Feb. 17, 2019
Disaggregation of Revenue [Line Items]
Total Revenue	$ 39,072	$ 35,396	$ 76,112	$ 70,465
Food and Sundries [Member]
Disaggregation of Revenue [Line Items]
Total Revenue	14,984	13,966	29,516	27,607
Hardlines [Member]
Disaggregation of Revenue [Line Items]
Total Revenue	6,774	5,770	12,617	11,610
Fresh Food [Member]
Disaggregation of Revenue [Line Items]
Total Revenue	5,079	4,690	9,655	8,983
Softlines [Member]
Disaggregation of Revenue [Line Items]
Total Revenue	4,504	4,224	8,801	8,347
Ancillary
Disaggregation of Revenue [Line Items]
Total Revenue	6,915	5,978	13,903	12,392
Net sales
Disaggregation of Revenue [Line Items]
Total Revenue	$ 38,256	$ 34,628	$ 74,492	$ 68,939