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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
 [1]
Jun. 30, 2026
Jun. 30, 2025
Net income before allocation to noncontrolling interests $ 691 $ 726 $ 1,292 $ 1,328 [2]
Other comprehensive (loss)/income, net of tax(b):        
Foreign currency translation adjustments [3] (28) 182 (8) 314 [1]
Benefit plans: Actuarial gains, net of tax of $0 for the three and six months ended June 30, 2026 and 2025 [3] 0 0 0 2 [1]
Other comprehensive (loss)/income, net of tax [3] (24) 104 8 192 [1]
Comprehensive income before allocation to noncontrolling interests 667 830 1,300 1,520 [1]
Less: Comprehensive income/(loss) attributable to noncontrolling interests 0 0 0 0 [1]
Comprehensive income attributable to Zoetis Inc. 667 830 1,300 1,520 [1]
Cash Flow Hedging        
Other comprehensive (loss)/income, net of tax(b):        
Unrealized gains (losses) on derivatives for cash flow hedges, net and net investment hedges [3] (2) (4) (4) (17) [1]
Net Investment Hedging        
Other comprehensive (loss)/income, net of tax(b):        
Unrealized gains (losses) on derivatives for cash flow hedges, net and net investment hedges [3] $ 6 $ (74) $ 20 $ (107) [1]
[1] See Note 2. Basis of Presentation for further detail regarding the Fiscal Year Alignment.
[2] See Note 2. Basis of Presentation for further detail regarding the Fiscal Year Alignment.
[3] Presented net of reclassification adjustments, which are not material in any period presented.