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