Share-based Payments (Stock option activity) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Shares
Outstanding, December 31, 2012 (in shares)	0
Granted (in shares)	2,994,295
Exercised (in shares)	(6,419)
Forfeited (in shares)	(108,312)
Outstanding, June 30, 2013 (in shares)	2,879,564
Exercisable, December 31, 2013	22,388
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 26.00
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	9 years 1 month 6 days
Weighted-average Exercise Price Per Share
Outstanding, December 31, 2012 (in dollars per share)	$ 0.00
Granted (in dollars per share)	$ 26.11
Exercised (in dollars per share)	$ 26.00
Forfeited (in dollars per share)	$ 26.01
Outstanding, June 30, 2013 (in dollars per share)	$ 26.11
Outstanding, Weighted-average Remaining Contractual Term	9 years 1 month 6 days
Outstanding, Aggregate Intrinsic Value	$ 19	[1]
Vested and expected to vest, Aggregate Intrinsic Value	0	[1]
Weighted-average grant date fair value per stock option	$ 7.05
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	0
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options	0
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options	0
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs	$ 11
Unrecognized compensation costs, period for recognition	2 years

[1] Market price of underlying Zoetis common stock less exercise price.