Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Numerator
Net income before allocation to noncontrolling interests	$ 718	$ 624	$ 1,349	$ 1,223
Less: Net income/(loss) attributable to noncontrolling interests	0	0	0	0
Net income attributable to Zoetis Inc.	$ 718	$ 624	$ 1,349	$ 1,223
Denominator
Weighted-average common shares outstanding	445.1	455.5	446.3	456.7
Common stock equivalents: stock options, RSUs, PSUs and DSUs	0.4	0.5	0.4	0.7
Weighted-average common and potential dilutive shares outstanding	445.5	456.0	446.7	457.4
Earnings per share attributable to Zoetis stockholders—basic (in dollars per share)	$ 1.61	$ 1.37	$ 3.02	$ 2.68
Earnings per share attributable to Zoetis stockholders—diluted (in dollars per share)	$ 1.61	$ 1.37	$ 3.02	$ 2.67