v2.3.0.11
Segments (Reconciliation to Consolidated Income from Continuing Operations Before Income Taxes) (Details) (USD $)
In Millions
3 Months Ended
Apr. 30, 2011
Apr. 30, 2010
Operating income (loss) $ 5,896 $ 5,737
Interest expense, net (518) (471)
Income from continuing operations before income taxes 5,378 5,266
Walmart U.S. [Member]
   
Operating income (loss) 4,650 4,615
Walmart International [Member]
   
Operating income (loss) 1,096 1,083
Sam's Club [Member]
   
Operating income (loss) 459 429
Other [Member]
   
Operating income (loss) $ (309) $ (390)