Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2015

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)	2015		2014		2013
Numerator
Net income before allocation to noncontrolling interests	$	339	$	587	$	503
Net income/(loss) attributable to noncontrolling interests	—		4		(1		)
Net income attributable to Zoetis Inc.	$	339	$	583	$	504
Denominator
Weighted-average common shares outstanding	499.707		501.055		500.002
Common stock equivalents: stock options, RSUs, DSUs and PSUs	2.312		0.970		0.315
Weighted-average common and potential dilutive shares outstanding	502.019		502.025		500.317
Earnings per share attributable to Zoetis Inc. stockholders—basic	$	0.68	$	1.16	$	1.01
Earnings per share attributable to Zoetis Inc. stockholders—diluted	$	0.68	$	1.16	$	1.01