CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions		3 Months Ended
		Apr. 02, 2017	Apr. 03, 2016
Statement of Comprehensive Income [Abstract]
Net income before allocation to noncontrolling interests		$ 239	$ 204
Other comprehensive income/(loss), net of taxes and reclassification adjustments:
Foreign currency translation adjustments, net		44	2
Benefit plans: Actuarial (losses)/gains, net	[1]	2	1
Total other comprehensive income/(loss), net of tax		46	3
Comprehensive income before allocation to noncontrolling interests		285	207
Less: Comprehensive income/(loss) attributable to noncontrolling interests		1	(1)
Comprehensive income attributable to Zoetis Inc.		$ 284	$ 208

[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.