Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2020

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)	2020		2019		2018
Numerator
Net income before allocation to noncontrolling interests	$	1,636	$	1,500	$	1,424
Less: net loss attributable to noncontrolling interests	(2)		—		(4)
Net income attributable to Zoetis Inc.	$	1,638	$	1,500	$	1,428
Denominator
Weighted-average common shares outstanding	475.502		478.128		483.063
Common stock equivalents: stock options, RSUs, DSUs and PSUs	3.067		3.659		3.835
Weighted-average common and potential dilutive shares outstanding	478.569		481.787		486.898
Earnings per share attributable to Zoetis Inc. stockholders—basic	$	3.44	$	3.14	$	2.96
Earnings per share attributable to Zoetis Inc. stockholders—diluted	$	3.42	$	3.11	$	2.93