Segment Reporting Information by Segment (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
Feb. 16, 2020	Feb. 17, 2019	Feb. 16, 2020	Feb. 17, 2019	Sep. 01, 2019
Segment Reporting Information [Line Items]
Total Revenue	$ 39,072	$ 35,396	$ 76,112	$ 70,465	$ 152,703
Operating Income	1,266	1,203	2,327	2,152	4,737
Total Assets	48,782	42,799	48,782	42,799	45,400
Operating Segments [Member] \| United States Operations
Segment Reporting Information [Line Items]
Total Revenue	28,523	25,872	55,588	51,422	111,751
Operating Income	821	812	1,456	1,372	3,063
Total Assets	33,575	30,033	33,575	30,033	32,162
Operating Segments [Member] \| Canada Operations
Segment Reporting Information [Line Items]
Total Revenue	5,231	4,792	10,358	9,769	21,366
Operating Income	202	198	430	412	924
Total Assets	4,470	4,250	4,470	4,250	4,369
Operating Segments [Member] \| Other International Operations
Segment Reporting Information [Line Items]
Total Revenue	5,318	4,732	10,166	9,274	19,586
Operating Income	243	193	441	368	750
Total Assets	$ 10,737	$ 8,516	$ 10,737	$ 8,516	$ 8,869