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Earnings Per Share (Tables)
 6 Months Ended
Jun. 30, 2013
Earnings Per Share [Abstract]  
Reconciliation of basic and diluted earnings per common share
The following is a reconciliation of basic and diluted earnings per common share for the respective periods:
 
 
Three Months Ended June 30,
 
Six Months Ended
June 30,
In millions, except per share amounts
2013
 
2012
 
2013
 
2012
Numerators for earnings per common share calculations:
 
 
 
 
 
 
 
Income from continuing operations
$
1,122

 
$
966

 
$
2,078

 
$
1,742

Net loss attributable to noncontrolling interest
—

 
1

 
—

 
2

Income from continuing operations attributable to CVS Caremark
1,122

 
967

 
2,078

 
1,744

Loss from discontinued operations, net of tax
(1
)
 
(1
)
 
(1
)
 
(2
)
Net income attributable to CVS Caremark, basic and diluted
$
1,121

 
$
966

 
$
2,077

 
$
1,742

Denominators for earnings per common share calculations:
 

 
 

 
 

 
 

Weighted average common shares, basic
1,227

 
1,278

 
1,230

 
1,289

Effect of dilutive securities:


 


 
 

 
 

Stock options
8

 
8

 
7

 
8

Restricted stock units
1

 
1

 
1

 
1

Weighted average common shares, diluted
1,236

 
1,287

 
1,238

 
1,298

Basic earnings per common share:
 

 
 

 
 

 
 

Income from continuing operations attributable to CVS Caremark
$
0.91

 
$
0.76

 
$
1.69

 
$
1.35

Loss from discontinued operations attributable to CVS Caremark
—

 
—

 
—

 
—

Net income attributable to CVS Caremark
$
0.91

 
$
0.76

 
$
1.69

 
$
1.35

Diluted earnings per common share:


 
 
 
 

 
 

Income from continuing operations attributable to CVS Caremark
$
0.91

 
$
0.75

 
$
1.68

 
$
1.34

Loss from discontinued operations attributable to CVS Caremark
—

 
—

 
—

 
—

Net income attributable to CVS Caremark
$
0.91

 
$
0.75

 
$
1.68

 
$
1.34