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Net Income Per Common Share (Tables)
 6 Months Ended
Jul. 31, 2015
Earnings Per Share [Abstract]  
Schedule of calculation of numerator and denominator in earnings per share
The following table provides a reconciliation of the numerators and denominators used to determine basic and diluted income per common share from continuing operations attributable to Walmart:
 
 
Three Months Ended July 31,
 
Six Months Ended July 31,
(Amounts in millions, except per share data)
 
2015
 
2014
 
2015
 
2014
Numerator
 
 
 
 
 
 
 
 
Income from continuing operations
 
$
3,635

 
$
4,089

 
$
6,918

 
$
7,800

Income from continuing operations attributable to noncontrolling interest
 
(160
)
 
(166
)
 
(102
)
 
(295
)
Income from continuing operations attributable to Walmart
 
$
3,475

 
$
3,923

 
$
6,816

 
$
7,505

 
 
 
 
 
 
 
 
 
Denominator
 
 
 
 
 
 
 
 
Weighted-average common shares outstanding, basic
 
3,221

 
3,230

 
3,226

 
3,231

Dilutive impact of stock options and other share-based awards
 
10

 
11

 
11

 
13

Weighted-average common shares outstanding, diluted
 
3,231

 
3,241

 
3,237

 
3,244


 
 
 
 
 
 
 
 
Income per common share from continuing operations attributable to Walmart
 
 
 
 
 
 
 
 
Basic
 
$
1.08

 
$
1.22

 
$
2.11

 
$
2.32

Diluted
 
1.08

 
1.21

 
2.11

 
2.31