Name:	us-gaap_LossContingenciesLineItems
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Data Type:	xbrli:stringItemType
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Amount of loss contingency liability.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

Name:	us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Number of claims settled.

No definition available.

Name:	us-gaap_LossContingencyClaimsSettledNumber
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Data Type:	xbrli:integerItemType
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The total number of new claims filed pertaining to a loss contingency during the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

Name:	us-gaap_LossContingencyNewClaimsFiledNumber
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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of pending claims pertaining to a loss contingency.

Name:	us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
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The number of years lawsuit was temporarily suspended.

No definition available.

Name:	zts_LawsuitTemporarilySuspended
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Data Type:	xbrli:durationItemType
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Loss Contingency, Additional Number of Defendants

No definition available.

Name:	zts_LossContingencyAdditionalNumberOfDefendants
Namespace Prefix:	zts_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Number of Contaminated, Contamination of Animal Feed

No definition available.

Name:	zts_NumberofContaminatedContaminationofAnimalFeed
Namespace Prefix:	zts_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of Deaths, Contamination of Animal Feed

No definition available.

Name:	zts_NumberofDeathsContaminationofAnimalFeed
Namespace Prefix:	zts_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Name:	us-gaap_LitigationCaseAxis=zts_PregsureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_LitigationCaseAxis=zts_UlianopolisBrazilMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_LitigationCaseAxis=zts_LascadoilMember
Namespace Prefix:
Data Type:	na
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