CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	$ (1)	$ 0	$ (1)	$ 0
Net income before allocation to noncontrolling interests	479	433	1,278	1,116
Other comprehensive income (loss), net of taxes:
Unrealized gains/(losses) on derivatives for cash flow hedges, net	5	(4)
Unrealized (losses)/gains on derivatives for net investment hedges, net	(30)	23	(27)	(3)
Foreign currency translation adjustments, net	147	(49)	46	(95)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	(1)	0	(1)	0
Total other comprehensive income (loss), net of tax	121	(30)	(9)	(70)
Comprehensive income before allocation to noncontrolling interests	600	403	1,269	1,046
Less: Comprehensive loss attributable to noncontrolling interests	0	0	(1)	0
Comprehensive income attributable to Zoetis Inc.	$ 600	$ 403	1,270	1,046
Unrecognized net gains/(losses) on cross-currency interest rate swap contracts, recorded, net of tax			$ (27)	$ 28