CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Oct. 02, 2016	Sep. 27, 2015	Oct. 02, 2016	Sep. 27, 2015
Statement of Comprehensive Income [Abstract]
Net income before allocation to noncontrolling interests		$ 237	$ 190	$ 665	$ 319
Other comprehensive income/(loss), net of taxes and reclassification adjustments:
Unrealized gains/(losses) on derivatives, net	[1]	1	(3)	(2)	(3)
Foreign currency translation adjustments, net		49	(57)	114	(200)
Benefit plans: Actuarial (losses)/gains, net	[1]	(1)	0	2	1
Total other comprehensive income/(loss), net of tax		49	(60)	114	(202)
Comprehensive income before allocation to noncontrolling interests		286	130	779	117
Less: Comprehensive income/(loss) attributable to noncontrolling interests		1	(2)	0	(1)
Comprehensive income attributable to Zoetis Inc.		$ 285	$ 132	$ 779	$ 118

[1] Presented net of reclassification adjustments and tax impacts, which are not significant in any period presented. Reclassification adjustments related to benefit plans are generally reclassified, as part of net periodic pension cost, into Cost of sales, Selling, general and administrative expenses, and/or Research and development expenses, as appropriate, in the condensed consolidated statements of income.