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Earnings Per Share
 3 Months Ended
Mar. 31, 2013
Earnings Per Share [Abstract]  
Earnings Per Share
Earnings Per Share
 
Basic earnings per common share attributable to CVS Caremark is computed by dividing: (i) net income attributable to CVS Caremark by (ii) the weighted average number of common shares outstanding in the period (the “Basic Shares”).
 
Diluted earnings per common share attributable to CVS Caremark is computed by dividing: (i) net income attributable to CVS Caremark by (ii) Basic Shares plus the additional shares that would be issued assuming that all dilutive stock awards are exercised. Options to purchase approximately 8.1 million and 0.1 million shares of common stock were outstanding, but were not included in the calculation of diluted earnings per share for the three months ended March 31, 2013 and 2012, respectively, because the options’ exercise prices were greater than the average market price of the common shares and, therefore, the effect would be antidilutive.
 
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