Segment Reporting (Segment Reporting Information, By Segment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Feb. 12, 2012	Feb. 13, 2011	Feb. 12, 2012	Feb. 13, 2011	Aug. 28, 2011
Segment Reporting Information [Line Items]
Total revenue	$ 22,967	$ 20,875	$ 44,595	$ 40,114	$ 88,915
Operating income	644	596	1,187	1,121	2,439
Depreciation and amortization	209	195	414	386	855
Additions to property and equipment	289	234	632	540	1,290
Property and equipment, net	12,519	12,102	12,519	12,102	12,432
Total assets	27,511	25,716	27,511	25,716	26,761
United States Operations [Member]
Segment Reporting Information [Line Items]
Total revenue	16,611	15,241	32,225	29,252	64,904
Operating income	373	336	690	624	1,395
Depreciation and amortization	156	146	310	290	640
Additions to property and equipment	207	171	432	421	876
Property and equipment, net	8,958	8,778	8,958	8,778	8,870
Total assets	19,110	18,531	19,110	18,531	18,558
Canadian Operations [Member]
Segment Reporting Information [Line Items]
Total revenue	3,562	3,220	7,003	6,257	14,020
Operating income	144	135	279	276	621
Depreciation and amortization	28	27	54	52	117
Additions to property and equipment	33	25	87	62	144
Property and equipment, net	1,618	1,588	1,618	1,588	1,608
Total assets	3,832	3,376	3,832	3,376	3,741
Other International Operations [Member]
Segment Reporting Information [Line Items]
Total revenue	2,794	2,414	5,367	4,605	9,991
Operating income	127	125	218	221	423
Depreciation and amortization	25	22	50	44	98
Additions to property and equipment	49	38	113	57	270
Property and equipment, net	1,943	1,736	1,943	1,736	1,954
Total assets	$ 4,569	$ 3,809	$ 4,569	$ 3,809	$ 4,462