Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Numerator
Net income before allocation to noncontrolling interests	$ 551	$ 594
Less: Net loss attributable to noncontrolling interests	(1)	(1)
Net income attributable to Zoetis Inc.	$ 552	$ 595
Denominator
Weighted-average common shares outstanding	463,500,000	472,200,000
Common stock equivalents: stock options, RSUs, PSUs and DSUs	1,100,000	1,900,000
Weighted-average common and potential dilutive shares outstanding	464,600,000	474,100,000
Earnings per share attributable to Zoetis stockholders—basic (in dollars per share)	$ 1.19	$ 1.26
Earnings per share attributable to Zoetis stockholders—diluted (in dollars per share)	$ 1.19	$ 1.26
Antidilutive securities excluded from computation of earnings per share, amount	0	0