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Net Income Per Common Share (Tables)
 12 Months Ended
Jan. 31, 2013
Earnings Per Share [Abstract]  
Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share
 
 
Fiscal Years Ended January 31,
(Amounts in millions, except per share data)
 
2013
 
2012
 
2011
Numerator
 
 
 
 
 
 
Income from continuing operations
 
$
17,756

 
$
16,454

 
$
15,959

Less consolidated net income attributable to noncontrolling interest
 
(757
)
 
(688
)
 
(604
)
Income from continuing operations attributable to Walmart
 
$
16,999

 
$
15,766

 
$
15,355

 
 
 
 
 
 
 
Denominator
 
 
 
 
 
 
Weighted-average common shares outstanding, basic
 
3,374

 
3,460

 
3,656

Dilutive impact of stock options and other share-based awards
 
15

 
14

 
14

Weighted-average common shares outstanding, diluted
 
3,389

 
3,474

 
3,670

 
 
 
 
 
 
 
Income per common share from continuing operations attributable to Walmart
 
 
 
 
 
 
Basic
 
$
5.04

 
$
4.56

 
$
4.20

Diluted
 
5.02

 
4.54

 
4.18