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Earnings Per Share (Notes)
 12 Months Ended
Dec. 31, 2013
Earnings Per Share [Abstract]  
Earnings per Share
16.
Earnings per Share
The weighted average shares outstanding for both basic and diluted earnings per share for the years ended December 31, 2012 and 2011 was calculated using an aggregate of 500 million shares of common stock outstanding, which was the number of Zoetis Inc. shares outstanding at the time of the IPO. There were no Zoetis RSUs, stock options or performance shares outstanding prior to the IPO.
The following table presents the calculation of basic and diluted earnings per share:
 
 
Year Ended December 31,
(MILLIONS OF DOLLARS AND SHARES, EXCEPT PER SHARE DATA)
 
2013

 
2012

 
2011

Numerator
 
 
 
 
 
 
Net income before allocation to noncontrolling interests
 
$
503

 
$
436

 
$
248

Net income/(loss) attributable to noncontrolling interests
 
(1
)
 
—

 
3

Net income attributable to Zoetis Inc.
 
$
504

 
$
436

 
$
245

Denominator
 
 
 
 
 
 
Weighted-average common shares outstanding
 
500.002

 
500.000

 
500.000

Common stock equivalents: stock options, RSUs and DSUs
 
0.315

 
—

 


Weighted-average common and potential dilutive shares outstanding
 
500.317

 
500.000

 
500.000

Earnings per share attributable to Zoetis Inc. stockholders—basic
 
$
1.01

 
$
0.87

 
$
0.49

Earnings per share attributable to Zoetis Inc. stockholders—diluted
 
$
1.01

 
$
0.87

 
$
0.49