Restructuring Charges and Other Costs Associated with Acquisitions and Cost-Reduction/Productivity Initiatives (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019		Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Total Restructuring charges and certain acquisition-related costs		$ 9	$ 5
Restructuring charges (reversals)		3
Restructuring Reserve [Roll Forward]
Restructuring accrual balance	[1],[2]	45
Provision		3
Utilization and other	[2],[3]	(7)
Restructuring accrual balance	[1],[2]	41
Other current liabilities
Restructuring Reserve [Roll Forward]
Accrued expenses		19			$ 23
Other Noncurrent Liabilities
Restructuring Reserve [Roll Forward]
Other noncurrent liabilities		22			$ 22
Employee Termination Costs
Restructuring Cost and Reserve [Line Items]
Employee termination costs	[4]	3	4
Direct Cost
Restructuring Cost and Reserve [Line Items]
Integration costs		$ 6	1	[5]
Zoetis Initiatives | Reconciling Items
Restructuring Cost and Reserve [Line Items]
Restructuring and Other Cost Productivity Charges			$ 2

[1] At March 31, 2020, and December 31, 2019, included in Accrued expenses ($19 million and $23 million, respectively) and Other noncurrent liabilities ($22 million and $22 million, respectively).

[2] Changes in our restructuring accrual represents employee termination costs.

[3] Includes adjustments for foreign currency translation.

[4] The restructuring charges for the three months ended March 31, 2020 primarily relate to CEO transition-related costs which are associated with Manufacturing/research/corporate.The restructuring charges for the three months ended March 31, 2019 primarily relate to the acquisition of Abaxis which are associated with Manufacturing/research/corporate.

[5] Integration costs represent external, incremental costs directly related to integrating acquired businesses and primarily include expenditures for consulting and the integration of systems and processes, as well as product transfer costs.