Segment Reporting Information by Segment (Detail) - USD ($)
$ in Millions
 3 Months Ended 8 Months Ended 12 Months Ended
May 13, 2018
May 07, 2017
May 13, 2018
May 07, 2017
Sep. 03, 2017
Segment Reporting Information [Line Items]          
Total revenue $ 32,361 $ 28,860 $ 97,165 $ 86,725 $ 129,025
Operating income 1,067 968 3,034 2,661 4,111
Depreciation and amortization 327 320 1,006 929 1,370
Additions to property and equipment 585 540 1,913 1,723 2,502
Net property and equipment 19,178 17,535 19,178 17,535 18,161
Total assets 39,605 35,631 39,605 35,631 36,347
Operating Segments [Member] | UNITED STATES          
Segment Reporting Information [Line Items]          
Total revenue 23,475 21,172 69,975 63,313 93,889
Operating income 682 654 1,818 1,680 2,644
Depreciation and amortization 242 245 756 712 1,044
Additions to property and equipment 468 363 1,323 1,147 1,714
Net property and equipment 12,924 12,139 12,924 12,139 12,339
Total assets 27,062 24,356 27,062 24,356 24,068
Operating Segments [Member] | CANADA          
Segment Reporting Information [Line Items]          
Total revenue 4,647 4,069 14,163 12,397 18,775
Operating income 210 172 652 543 841
Depreciation and amortization 31 28 94 81 124
Additions to property and equipment 42 40 156 206 277
Net property and equipment 1,829 1,612 1,829 1,612 1,820
Total assets 4,248 4,014 4,248 4,014 4,471
Operating Segments [Member] | Other International Operations          
Segment Reporting Information [Line Items]          
Total revenue 4,239 3,619 13,027 11,015 16,361
Operating income 175 142 564 438 626
Depreciation and amortization 54 47 156 136 202
Additions to property and equipment 75 137 434 370 511
Net property and equipment 4,425 3,784 4,425 3,784 4,002
Total assets $ 8,295 $ 7,261 $ 8,295 $ 7,261 $ 7,808