CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (UNAUDITED) - USD ($) $ in Millions		Total	Common Stock	Treasury Stock	Treasury Stock Share Repurchase Program	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Equity Attributable to Noncontrolling Interests
Beginning balance (in shares) at Dec. 31, 2021			501,900,000
Beginning balance at Dec. 31, 2021		$ 4,544	$ 5	$ (2,952)		$ 1,068	$ 7,186	$ (764)	$ 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		594					595		(1)
Other comprehensive (loss)/income, net of tax		60						60
Treasury stock, beginning balance (in shares) at Dec. 31, 2021				29,300,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury stock acquired, shares				(1,900,000)	(500,000)
Share-based compensation awards		(27)		$ (4)		(23)	0
Treasury stock acquired		(361)		(361)
Employee benefit plan contribution from Pfizer Inc.	[1]	1				1
Dividends, Common Stock		(153)					(153)
Ending balance (in shares) at Mar. 31, 2022			501,900,000
Ending balance at Mar. 31, 2022		$ 4,658	$ 5	$ (3,317)		1,046	7,628	(704)	0
Treasury stock, ending balance (in shares) at Mar. 31, 2022				30,700,000
Beginning balance (in shares) at Dec. 31, 2022		501,891,243	501,900,000
Beginning balance at Dec. 31, 2022		$ 4,403	$ 5	$ (4,539)		1,088	8,668	(817)	(2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		551					552		(1)
Other comprehensive (loss)/income, net of tax		$ (11)						(11)
Treasury stock, beginning balance (in shares) at Dec. 31, 2022		38,083,184		38,100,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury stock acquired, shares				(1,700,000)	(400,000)
Share-based compensation awards		$ 7		$ 17		(9)
Treasury stock acquired		(285)		(285)
Dividends, Common Stock		$ (174)					(174)
Ending balance (in shares) at Mar. 31, 2023		501,891,243	501,900,000
Ending balance at Mar. 31, 2023		$ 4,491	$ 5	$ (4,807)		$ 1,079	$ 9,045	$ (828)	$ (3)
Treasury stock, ending balance (in shares) at Mar. 31, 2023		39,395,900		39,400,000

[1] Represents contributed capital from Pfizer Inc. associated with service credit continuation for certain Zoetis Inc. employees in Pfizer Inc.'s U.S. qualified defined benefit and U.S. retiree medical plans.