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Earnings Per Share (Tables)
 3 Months Ended
Mar. 31, 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 March 31,
In millions, except per share amounts
2013
 
2012
Numerators for earnings per common share calculations:
 
 
 
Income from continuing operations
$
956

 
$
776

Net loss attributable to noncontrolling interest
—

 
1

Income from continuing operations attributable to CVS Caremark
956

 
777

Loss from discontinued operations, net of tax
—

 
(1
)
Net income attributable to CVS Caremark, basic and diluted
$
956

 
$
776

Denominators for earnings per common share calculations:
 

 
 

Weighted average common shares, basic
1,232

 
1,299

Effect of dilutive securities:


 


Stock options
7

 
9

Restricted stock units
2

 
1

Weighted average common shares, diluted
1,241

 
1,309

Basic earnings per common share:
 

 
 

Income from continuing operations attributable to CVS Caremark
$
0.78

 
$
0.60

Loss from discontinued operations attributable to CVS Caremark
—

 
—

Net income attributable to CVS Caremark
$
0.78

 
$
0.60

Diluted earnings per common share:


 
 
Income from continuing operations attributable to CVS Caremark
$
0.77

 
$
0.59

Loss from discontinued operations attributable to CVS Caremark
—

 
—

Net income attributable to CVS Caremark
$
0.77

 
$
0.59