Condensed Consolidated Statement Of Shareholders' Equity (Unaudited) (USD $) In Millions	Common Stock [Member]	Capital In Excess Of Par Value [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total Walmart Shareholders' Equity [Member]	Noncontrolling Interest [Member]	Total
Balances at Jan. 31, 2011	$ 352	$ 3,577	$ 63,967	$ 646	$ 68,542	$ 2,705	$ 71,247
Balances, in shares at Jan. 31, 2011	3,516
Consolidated net income (excludes redeemable noncontrolling interest)			10,536		10,536	404	10,940
Other comprehensive income				(2,021)	(2,021)	(663)	(2,684)
Cash dividends declared (1.46 per share)			(5,105)		(5,105)		(5,105)
Purchase of Company stock (in shares)	(90)
Purchase of Company stock	(9)	(175)	(4,646)		(4,830)		(4,830)
Noncontrolling interest from acquisitions						1,988	1,988
Other, in shares	11
Other	1	23	17		41	(206)	(165)
Balances at Oct. 31, 2011	$ 344	$ 3,425	$ 64,769	$ (1,375)	$ 67,163	$ 4,228	$ 71,391
Balances, in shares at Oct. 31, 2011	3,437