Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Numerator
Net income before allocation to noncontrolling interests	$ 631	$ 599
Less: Net income/(loss) attributable to noncontrolling interests	0	0
Net income attributable to Zoetis Inc.	$ 631	$ 599
Denominator
Weighted-average common shares outstanding	447.6	458.0
Common stock equivalents: stock options, RSUs, PSUs and DSUs	0.4	0.8
Weighted-average common and potential dilutive shares outstanding	448.0	458.8
Earnings per share attributable to Zoetis stockholders—basic (in dollars per share)	$ 1.41	$ 1.31
Earnings per share attributable to Zoetis stockholders—diluted (in dollars per share)	$ 1.41	$ 1.31