CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions		3 Months Ended
		Apr. 02, 2017	Apr. 03, 2016
Operating Activities
Net income before allocation to noncontrolling interests		$ 239	$ 204
Adjustments to reconcile net income before noncontrolling interests to net cash provided by operating activities:
Depreciation and amortization expense	[1],[2]	62	57
Share-based compensation expense		11	9
Restructuring		(1)	2
Gains on sales of assets		0	(33)
Provision for losses on inventory		16	16
Deferred taxes		24	(25)
Employee benefit plan contribution from Pfizer Inc.		1	1
Other non-cash adjustments		4	1
Other changes in assets and liabilities, net of acquisitions and divestitures
Accounts receivable		(22)	21
Inventories		(52)	(3)
Other assets		(13)	(36)
Accounts payable		(37)	(84)
Other liabilities		(147)	(193)
Other tax accounts, net		34	114
Net cash provided by operating activities		119	51
Investing Activities
Purchases of property, plant and equipment		(42)	(45)
Acquisitions		(3)	(12)
Net proceeds from sales of assets		0	75
Other investing activities		(3)	0
Net cash used in investing activities		(48)	18
Financing Activities
Increase/(decrease) in short-term borrowings, net		0	(1)
Principal payments on long-term debt		0	(400)
Payment of contingent consideration related to previously acquired assets		(5)	(22)
Share-based compensation-related proceeds, net of taxes paid on withholding shares		6	3
Purchases of treasury stock	[3]	(125)	(76)
Cash dividends paid		(52)	(47)
Net cash used in financing activities		(176)	(543)
Effect of exchange-rate changes on cash and cash equivalents		7	(5)
Net decrease in cash and cash equivalents		(98)	(479)
Cash and cash equivalents at beginning of period		727	1,154
Cash and cash equivalents at end of period		629	675
Cash paid during the period for:
Income taxes		37	49
Interest, net of capitalized interest		56	58
Non-cash transactions:
Purchases of property, plant and equipment		4	9
Contingent purchase price consideration	[4]	2	27
Dividends declared, not paid		$ 52	$ 49

[1] Certain production facilities are shared. Depreciation and amortization is allocated to the reportable operating segments based on estimates of where the benefits of the related assets are realized.

[2] Defined as income before provision for taxes on income.

[3] Reflects the acquisition of treasury shares in connection with the share repurchase programs. For additional information, see Note 13. Stockholders' Equity.

[4] For 2017, relates primarily to the consolidation of a European livestock monitoring company a variable interest entity of which Zoetis is the primary beneficiary. For 2016, relates primarily to the non-cash portion of the acquisition of a livestock business in South America.