Earnings Per Share

12 Months Ended

Dec. 31, 2022

Earnings Per Share [Abstract]

Earnings per Share

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)	2022		2021		2020
Numerator
Net income before allocation to noncontrolling interests	$	2,111	$	2,034	$	1,636
Less: net loss attributable to noncontrolling interests	(3)		(3)		(2)
Net income attributable to Zoetis Inc.	$	2,114	$	2,037	$	1,638
Denominator
Weighted-average common shares outstanding	468.891		474.348		475.502
Common stock equivalents: stock options, RSUs, DSUs and PSUs	1.494		2.369		3.067
Weighted-average common and potential dilutive shares outstanding	470.385		476.717		478.569
Earnings per share attributable to Zoetis Inc. stockholders—basic	$	4.51	$	4.29	$	3.44
Earnings per share attributable to Zoetis Inc. stockholders—diluted	$	4.49	$	4.27	$	3.42

The number of stock options outstanding under the company's Equity Plan that were excluded from the computation of diluted earnings per share, as the effect would have been antidilutive, were not material for the years ended December 31, 2022, 2021 and 2020.