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Segment Reporting Information by Segment (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Feb. 17, 2019
Feb. 18, 2018
Feb. 17, 2019
Feb. 18, 2018
Sep. 02, 2018
Segment Reporting Information [Line Items]          
Total Revenue $ 35,396 $ 32,995 $ 70,465 $ 64,804 $ 141,576
Operating Income 1,203 1,016 2,152 1,967 4,480
Depreciation and amortization 352 344 683 679 1,437
Additions to property and equipment 587 508 1,317 1,328 2,969
Net property and equipment 20,145 19,049 20,145 19,049 19,681
Total Assets 42,799 38,703 42,799 38,703 40,830
Operating Segments [Member] | United States Operations          
Segment Reporting Information [Line Items]          
Total Revenue 25,872 23,687 51,422 46,500 102,286
Operating Income 812 603 1,372 1,136 2,787
Depreciation and amortization 256 262 504 514 1,078
Additions to property and equipment 404 375 928 855 2,046
Net property and equipment 13,725 12,690 13,725 12,690 13,353
Total Assets 30,033 26,417 30,033 26,417 28,207
Operating Segments [Member] | Canada Operations          
Segment Reporting Information [Line Items]          
Total Revenue 4,792 4,745 9,769 9,516 20,689
Operating Income 198 206 412 442 939
Depreciation and amortization 37 31 68 63 135
Additions to property and equipment 77 39 171 114 268
Net property and equipment 1,937 1,852 1,937 1,852 1,900
Total Assets 4,250 3,825 4,250 3,825 4,303
Operating Segments [Member] | Other International Operations          
Segment Reporting Information [Line Items]          
Total Revenue 4,732 4,563 9,274 8,788 18,601
Operating Income 193 207 368 389 754
Depreciation and amortization 59 51 111 102 224
Additions to property and equipment 106 94 218 359 655
Net property and equipment 4,483 4,507 4,483 4,507 4,428
Total Assets $ 8,516 $ 8,461 $ 8,516 $ 8,461 $ 8,320