Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Basic and Diluted Earnings Per Share

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)	2016			2015		2014
Numerator
Net income before allocation to noncontrolling interests	$	819		$	339	$	587
Less: net (loss)/income attributable to noncontrolling interests	(2		)	—		4
Net income attributable to Zoetis Inc.	$	821		$	339	$	583
Denominator
Weighted-average common shares outstanding	495.715			499.707		501.055
Common stock equivalents: stock options, RSUs, DSUs and PSUs	2.510			2.312		0.970
Weighted-average common and potential dilutive shares outstanding	498.225			502.019		502.025
Earnings per share attributable to Zoetis Inc. stockholders—basic	$	1.66		$	0.68	$	1.16
Earnings per share attributable to Zoetis Inc. stockholders—diluted	$	1.65		$	0.68	$	1.16