Condensed Consolidated Statements Of Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Oct. 31, 2011		Oct. 31, 2010		Oct. 31, 2011		Oct. 31, 2010
Revenues:
Net sales	$ 109,516		$ 101,239		$ 321,569		$ 303,352
Membership and other income	710		713		2,212		2,137
Total revenues	110,226		101,952		323,781		305,489
Costs and expenses:
Cost of sales	82,591		75,819		242,538		227,875
Operating, selling, general and administrative expenses	21,757		20,522		63,086		60,076
Operating income	5,878		5,611		18,157		17,538
Interest:
Debt	528		500		1,544		1,432
Capital leases	72		69		218		201
Interest income	(65)		(53)		(131)		(161)
Interest, net	535		516		1,631		1,472
Income from continuing operations before income taxes	5,343		5,095		16,526		16,066
Provision for income taxes	1,842		1,505		5,510		5,285
Income from continuing operations	3,501		3,590		11,016		10,781
Loss from discontinued operations, net of tax	(8)				(36)
Consolidated net income	3,493	[1]	3,590	[1]	10,980	[2]	10,781	[2]
Less consolidated net income attributable to noncontrolling interest	(157)	[1]	(154)	[1]	(444)	[2]	(448)	[2]
Consolidated net income attributable to Walmart	$ 3,336		$ 3,436		$ 10,536		$ 10,333
Basic net income per common share:
Basic income per common share from continuing operations attributable to Walmart	$ 0.97		$ 0.95		$ 3.04		$ 2.80
Basic loss per common share from discontinued operations attributable to Walmart					$ (0.01)
Basic net income per common share attributable to Walmart	$ 0.97		$ 0.95		$ 3.03		$ 2.80
Diluted net income per common share:
Diluted income per common share from continuing operations attributable to Walmart	$ 0.97		$ 0.95		$ 3.03		$ 2.79
Diluted loss per common share from discontinued operations attributable to Walmart	$ (0.01)				$ (0.01)
Diluted net income per common share attributable to Walmart	$ 0.96		$ 0.95		$ 3.02		$ 2.79
Weighted-average common shares outstanding:
Basic	3,445		3,617		3,473		3,692
Diluted	3,458		3,631		3,487		3,706
Dividends declared per common share					$ 1.46		$ 1.21

[1] Includes $11 million and $4 million for the three months ended October 31, 2011 and 2010, respectively, related to the redeemable noncontrolling interest.

[2] Includes $40 million and $6 million for the nine months ended October 31, 2011 and 2010, respectively, related to the redeemable noncontrolling interest.