Share-Based Payments (Stock option valuation assumptions) (Details)		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Expected dividend yield	[1]	0.89%	0.72%	0.93%
Risk-free interest rate	[2]	1.57%	1.79%	2.01%
Expected stock price volatility	[3]	26.70%	23.92%	24.72%
Expected term (years)	[4]	6 years 6 months	6 years 6 months	6 years 6 months

[1] Determined using a constant dividend yield during the expected term of the Zoetis stock option.

[2] Determined using the interpolated yield on U.S. Treasury zero-coupon issues.

[3] For 2016 and 2015, determined using an equal weighting between historical volatility of the Zoetis stock price and implied volatility. The selection of the blended historical and implied volatility approach was based on our assessment that this calculation of expected volatility is more representative of future stock price trends. For 2014, determined using implied volatility.

[4] Determined using expected exercise and post-vesting termination patterns.