Earnings per Share (Tables)

3 Months Ended

Apr. 03, 2016

Earnings Per Share [Abstract]

Basic and Diluted Earnings Per Share

The following table presents the calculation of basic and diluted earnings per share:

	Three Months Ended
	April 3,		March 29,
(MILLIONS OF DOLLARS AND SHARES, EXCEPT PER SHARE DATA)	2016		2015
Numerator
Net income before allocation to noncontrolling interests	$	204	$	165
Less: net income attributable to noncontrolling interests	—		—
Net income attributable to Zoetis Inc.	$	204	$	165
Denominator
Weighted-average common shares outstanding	497.4		501.1
Common stock equivalents: stock options, RSUs, PSUs and DSUs	2.1		2.1
Weighted-average common and potential dilutive shares outstanding	499.5		503.2
Earnings per share attributable to Zoetis Inc. stockholders—basic	$	0.41	$	0.33
Earnings per share attributable to Zoetis Inc. stockholders—diluted	$	0.41	$	0.33