Condensed Consolidated Statements Of Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2014	Oct. 31, 2013
Revenues:
Net sales	$ 118,076	$ 114,876	$ 351,579	$ 344,290
Membership and other income	925	812	2,507	2,298
Total revenues	119,001	115,688	354,086	346,588
Costs and expenses:
Cost of sales	89,247	86,687	265,971	260,098
Operating, selling, general and administrative expenses	23,489	22,691	68,917	66,965
Operating income	6,265	6,310	19,198	19,525
Interest:
Debt	561	527	1,601	1,556
Capital leases	115	65	237	198
Interest income	(20)	(12)	(76)	(92)
Interest, net	656	580	1,762	1,662
Income from continuing operations before income taxes	5,609	5,730	17,436	17,863
Provision for income taxes	1,783	1,860	5,810	5,856
Income from continuing operations	3,826	3,870	11,626	12,007
Income from discontinued operations, net of income taxes	0	15	285	38
Consolidated net income	3,826	3,885	11,911	12,045
Less consolidated net income attributable to noncontrolling interest	(115)	(147)	(514)	(454)
Consolidated net income attributable to Walmart	$ 3,711	$ 3,738	$ 11,397	$ 11,591
Basic net income per common share:
Basic income per common share from continuing operations attributable to Walmart	$ 1.15	$ 1.14	$ 3.47	$ 3.53
Basic income per common share from discontinued operations attributable to Walmart	$ 0.00	$ 0.01	$ 0.06	$ 0.00
Basic net income per common share attributable to Walmart	$ 1.15	$ 1.15	$ 3.53	$ 3.53
Diluted net income per common share:
Diluted income per common share from continuing operations attributable to Walmart	$ 1.15	$ 1.14	$ 3.46	$ 3.51
Diluted income per common share from discontinued operations attributable to Walmart	$ 0.00	$ 0.00	$ 0.05	$ 0.01
Diluted net income per common share attributable to Walmart	$ 1.15	$ 1.14	$ 3.51	$ 3.52
Weighted-average common shares outstanding:
Basic	3,229	3,257	3,231	3,279
Diluted	3,240	3,271	3,243	3,293
Dividends declared per common share	$ 0.00	$ 0.00	$ 1.92	$ 1.88