Other (Income)/Deductions - Net (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Royalty-related income		$ (1)	$ (2)	$ (2)	$ (4)
Interest income		(5)	(2)	(7)	(3)
Foreign currency loss	[1]	14	9	25	12
Other, net		(6)	2	(7)	4
Other (income)/deductions—net		2	10	9	12
Reconciling Items | Zoetis Initiatives
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net (gain)/loss on sale of assets	[2]	$ 0	$ 3	$ 0	$ 3

[1] Primarily driven by costs related to hedging and exposures to certain emerging and developed market currencies.

[2] For the three and six months ended June 30, 2021, represents a net loss related to the sale of certain assets of our poultry automation business located in the U.S. and Canada.