Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Numerator
Net income before allocation to noncontrolling interests	$ 599	$ 551
Less: Net loss attributable to noncontrolling interests	0	(1)
Net income attributable to Zoetis Inc.	$ 599	$ 552
Denominator
Weighted-average common shares outstanding	458,000,000.0	463,500,000
Common stock equivalents: stock options, RSUs, PSUs and DSUs	800,000	1,100,000
Weighted-average common and potential dilutive shares outstanding	458,800,000	464,600,000
Earnings per share attributable to Zoetis stockholders—basic (in dollars per share)	$ 1.31	$ 1.19
Earnings per share attributable to Zoetis stockholders—diluted (in dollars per share)	$ 1.31	$ 1.19
Antidilutive securities excluded from computation of earnings per share, amount	0	0