Condensed Consolidated Statement Of Shareholders' Equity (Unaudited) (USD $) In Millions	Total	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]
Balances at Jan. 31, 2012	$ 75,761	$ 342	$ 3,692	$ 68,691	$ (1,410)	$ 71,315	$ 4,446
Balances, in shares at Jan. 31, 2012		3,418
Consolidated net income (excludes redeemable noncontrolling interest)	11,841			11,393		11,393	448
Other Comprehensive Income Net Of Tax, excluding redeemable noncontrolling interest	1,044				848	848	196
Cash dividends declared (1.59 per share)	(5,409)			(5,409)		(5,409)
Purchase of Company stock (in shares)		(70)
Purchase of Company stock	(4,618)	(7)	(199)	(4,412)		(4,618)
Other Shares		10
Other	(18)	1	368	(7)		362	(380)
Balances at Oct. 31, 2012	$ 78,601	$ 336	$ 3,861	$ 70,256	$ (562)	$ 73,891	$ 4,710
Balances, in shares at Oct. 31, 2012		3,358