Acquisitions and Divestitures - Consideration Transferred (Details) - Abaxis Inc $ in Millions	Jul. 31, 2018 USD ($)
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 1,898	[1]
CashPaidForEqutyAwardsVestedAtAcquisition	54	[2]
Business Combination, Consideration Transferred	1,962
BusinessCombinationPreMergerService [Member]
Business Acquisition [Line Items]
Equity Issued in Business Combination, Fair Value Disclosure	$ 10	[3]

[1] Represents cash paid for cancellation and conversion of each outstanding share of Abaxis' common stock at the acquisition date.

[2] Represents cash paid for cancellation and settlement of restricted stock awards that fully vested in July 2018 as a result of service or pre-existing change-in-control provisions and termination provisions.

[3] Represents the fair value of replacement awards issued for Abaxis equity awards outstanding immediately before the acquisition and attributable to the service period prior to the acquisition. The previous Abaxis equity awards were converted into the Zoetis equity awards at an exchange ratio based on the closing prices of shares of Zoetis Common Stock and Abaxis Common Stock for ten full trading days before the closing of the acquisition.