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Segment Reporting Information by Segment (Detail) - USD ($)
$ in Millions
 3 Months Ended 8 Months Ended 12 Months Ended
May 07, 2017
May 08, 2016
May 07, 2017
May 08, 2016
Aug. 28, 2016
Segment Reporting Information [Line Items]          
Total revenue $ 28,860 $ 26,769 $ 86,725 $ 82,159 $ 118,719
Operating income 968 858 2,661 2,481 3,672
Depreciation and amortization 320 291 929 847 1,255
Additions to property and equipment 540 461 1,723 1,800 2,649
Net property and equipment 17,535 16,491 17,535 16,491 17,043
Total assets 35,631 33,873 35,631 33,873 33,163
Operating Segments [Member] | United States Operations          
Segment Reporting Information [Line Items]          
Total revenue 21,172 19,528 63,313 60,016 86,579
Operating income 654 539 1,680 1,542 2,326
Depreciation and amortization 245 220 712 636 946
Additions to property and equipment 363 335 1,147 1,252 1,823
Net property and equipment 12,139 11,466 12,139 11,466 11,745
Total assets 24,356 23,652 24,356 23,652 22,511
Operating Segments [Member] | Canadian Operations          
Segment Reporting Information [Line Items]          
Total revenue 4,069 3,869 12,397 11,542 17,028
Operating income 172 185 543 524 778
Depreciation and amortization 28 26 81 75 109
Additions to property and equipment 40 41 206 112 299
Net property and equipment 1,612 1,449 1,612 1,449 1,628
Total assets 4,014 3,373 4,014 3,373 3,480
Operating Segments [Member] | Other International Operations          
Segment Reporting Information [Line Items]          
Total revenue 3,619 3,372 11,015 10,601 15,112
Operating income 142 134 438 415 568
Depreciation and amortization 47 45 136 136 200
Additions to property and equipment 137 85 370 436 527
Net property and equipment 3,784 3,576 3,784 3,576 3,670
Total assets $ 7,261 $ 6,848 $ 7,261 $ 6,848 $ 7,172