Condensed Consolidated Statements Of Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Revenues:
Net sales	$ 114,876	$ 113,077	$ 344,290	$ 338,644
Membership and other income	812	723	2,298	2,231
Total revenues	115,688	113,800	346,588	340,875
Costs and expenses:
Cost of sales	86,687	85,470	260,098	256,226
Operating, selling, general and administrative expenses	22,691	22,237	66,965	65,504
Operating income	6,310	6,093	19,525	19,145
Interest:
Debt	527	522	1,556	1,512
Capital leases	65	68	198	205
Interest income	(12)	(44)	(92)	(131)
Interest, net	580	546	1,662	1,586
Income from continuing operations before income taxes	5,730	5,547	17,863	17,559
Provision for income taxes	1,860	1,738	5,856	5,718
Income from continuing operations	3,870	3,809	12,007	11,841
Income from discontinued operations, net of income taxes	15	16	38	39
Consolidated net income	3,885	3,825	12,045	11,880
Less consolidated net income attributable to noncontrolling interest	(147)	(190)	(454)	(487)
Consolidated net income attributable to Walmart	$ 3,738	$ 3,635	$ 11,591	$ 11,393
Basic net income per common share:
Basic income per common share from continuing operations attributable to Walmart	$ 1.14	$ 1.08	$ 3.53	$ 3.36
Basic income per common share from discontinued operations attributable to Walmart	$ 0.01	$ 0.00	$ 0.00	$ 0.01
Basic net income per common share attributable to Walmart	$ 1.15	$ 1.08	$ 3.53	$ 3.37
Diluted net income per common share:
Diluted income per common share from continuing operations attributable to Walmart	$ 1.14	$ 1.07	$ 3.51	$ 3.34
Diluted income per common share from discontinued operations attributable to Walmart	$ 0.00	$ 0.01	$ 0.01	$ 0.01
Diluted net income per common share attributable to Walmart	$ 1.14	$ 1.08	$ 3.52	$ 3.35
Weighted-average common shares outstanding:
Basic	3,257	3,364	3,279	3,385
Diluted	3,271	3,379	3,293	3,400
Dividends declared per common share	$ 0.00	$ 0.00	$ 1.88	$ 1.59