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)			7,200		7,200	258	7,458
Other comprehensive income				640	640	143	783
Cash dividends declared ($1.46 per share)			(5,094)		(5,094)		(5,094)
Purchase of Company stock (in shares)	(63)
Purchase of Company stock	(6)	(122)	(3,301)		(3,429)		(3,429)
Noncontrolling interest acquired						1,988	1,988
Other, in shares	9
Other		75	7		82	(187)	(105)
Balances at Jul. 31, 2011	$ 346	$ 3,530	$ 62,779	$ 1,286	$ 67,941	$ 4,907	$ 72,848
Balances, in shares at Jul. 31, 2011	3,462