Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Numerator
Net income before allocation to noncontrolling interests	$ 624	$ 670	$ 1,223	$ 1,221
Less: Net loss attributable to noncontrolling interests	0	(1)	0	(2)
Net income attributable to Zoetis Inc.	$ 624	$ 671	$ 1,223	$ 1,223
Denominator
Weighted-average common shares outstanding	455.5	461.9	456.7	462.7
Common stock equivalents: stock options, RSUs, PSUs and DSUs	0.5	1.0	0.7	1.1
Weighted-average common and potential dilutive shares outstanding	456.0	462.9	457.4	463.8
Earnings per share attributable to Zoetis stockholders—basic (in dollars per share)	$ 1.37	$ 1.45	$ 2.68	$ 2.64
Earnings per share attributable to Zoetis stockholders—diluted (in dollars per share)	$ 1.37	$ 1.45	$ 2.67	$ 2.64