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| <link:definition> 400010 - Disclosure - Basis of Presentation - Narrative (Details) </link:definition> |
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| <link:definition> 100030 - Disclosure - Critical Accounting Policies, Accounting Pronouncements Adopted and Recently Issued Accounting Standards </link:definition> |
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| <link:definition> 100040 - Disclosure - Revenue from Contracts with Customers </link:definition> |
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| <link:usedOn> link:definitionLink </link:usedOn> |
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| <link:definition> 400040 - Disclosure - Revenue from Contracts with Customers - Disaggregation of Revenue (Details) </link:definition> |
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| <link:definition> 300040 - Disclosure - Revenue from Contracts with Customers (Tables) </link:definition> |
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| <link:usedOn> link:definitionLink </link:usedOn> |
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| <link:definition> 200030 - Disclosure - Critical Accounting Policies, Accounting Pronouncements Adopted and Recently Issued Accounting Standards (Policies) </link:definition> |
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| | | <link:roleType roleURI="http://henryschein.com/role/RevenueFromContractsWithCustomersContractBalancesDetails" id="ELRID_DisclosureRevenueFromContractsWithCustomersContractBalancesDetails"> |
| <link:definition> 400041 - Disclosure - Revenue from Contracts with Customers - Contract Balances (Details) </link:definition> |
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| <link:usedOn> link:definitionLink </link:usedOn> |
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| <link:definition> 400030 - Disclosure - Critical Accounting Policies, Accounting Pronouncements Adopted and Recently Issued Accounting Standards - Narrative (Details) </link:definition> |
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| <link:definition> 400020 - Disclosure - Discontinued Operations - Summarized financial information for our discontinued operations (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
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| | | <link:roleType roleURI="http://henryschein.com/role/DiscontinuedOperationsTables" id="ELRID_DiscontinuedOperationsTables"> |
| <link:definition> 300020 - Disclosure - Discontinued Operations (Tables) </link:definition> |
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| | | <link:roleType roleURI="http://henryschein.com/role/Leases" id="ELRID_Leases"> |
| <link:definition> 100070 - Disclosure - Leases </link:definition> |
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| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType roleURI="http://henryschein.com/role/LeasesTables" id="ELRID_LeasesTables"> |
| <link:definition> 300070 - Disclosure - Leases (Tables) </link:definition> |
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| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType roleURI="http://henryschein.com/role/LeasesComponentsOfLeaseExpenseDetails" id="ELRID_LeasesComponentsOfLeaseExpenseDetails"> |
| <link:definition> 400071 - Disclosure - Leases - Components of lease expense (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType roleURI="http://henryschein.com/role/DiscontinuedOperationsNarrativeDetails" id="ELRID_DiscontinuedOperationsNarrativeDetails"> |
| <link:definition> 400021 - Disclosure - Discontinued Operations - Narrative (Details) </link:definition> |
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| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType roleURI="http://henryschein.com/role/LeasesMaturitiesOfLeaseLiabilitiesDetails" id="ELRID_LeasesMaturitiesOfLeaseLiabilitiesDetails"> |
| <link:definition> 400074 - Disclosure - Leases - Maturities of lease liabilities (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType roleURI="http://henryschein.com/role/LeasesPresentValueOfLeaseLiabilitiesDetails" id="ELRID_LeasesPresentValueOfLeaseLiabilitiesDetails"> |
| <link:definition> 400075 - Disclosure - Leases - Present value of lease liabilities (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType roleURI="http://henryschein.com/role/DebtBankCreditLinesDetails" id="ELRID_DebtBankCreditLinesDetails"> |
| <link:definition> 400060 - Disclosure - Debt - Bank credit lines (Details) </link:definition> |
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| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType roleURI="http://henryschein.com/role/LeasesSupplementalCashFlowInformationDetails" id="ELRID_LeasesSupplementalCashFlowInformationDetails"> |
| <link:definition> 400073 - Disclosure - Leases - Supplemental cash flow information (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType roleURI="http://henryschein.com/role/LeasesSupplementalBalanceSheetInformationDetails" id="ELRID_LeasesSupplementalBalanceSheetInformationDetails"> |
| <link:definition> 400072 - Disclosure - Leases - Supplemental balance sheet information (Details) </link:definition> |
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| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType roleURI="http://henryschein.com/role/LeasesNarrativeDetails" id="ELRID_LeasesNarrativeDetails"> |
| <link:definition> 400070 - Disclosure - Leases - Narrative (Details) </link:definition> |
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| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType roleURI="http://henryschein.com/role/CoverPage" id="ELRID_CoverPage"> |
| <link:definition> 000010 - Document - Cover Page </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType roleURI="http://henryschein.com/role/RelatedPartyTransactions" id="ELRID_RelatedPartyTransactions"> |
| <link:definition> 100190 - Disclosure - Related Party Transactions </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType roleURI="http://henryschein.com/role/RelatedPartyTransactionsNarrativeDetails" id="ELRID_RelatedPartyTransactionsNarrativeDetails"> |
| <link:definition> 400190 - Disclosure - Related Party Transactions - Narrative (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType roleURI="http://henryschein.com/role/StockBasedCompensationBlackScholesValuationModelDetails" id="ELRID_StockBasedCompensationBlackScholesValuationModelDetails"> |
| <link:definition> 400161 - Disclosure - Stock-Based Compensation - Black-Scholes valuation model (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType roleURI="http://henryschein.com/role/StockBasedCompensationSummaryOfStockOptionActivityDetails" id="ELRID_StockBasedCompensationSummaryOfStockOptionActivityDetails"> |
| <link:definition> 400162 - Disclosure - Stock-Based Compensation - Summary of stock option activity (Details) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType roleURI="http://henryschein.com/role/BusinessAcquisitionsTables" id="ELRID_BusinessAcquisitionsTables"> |
| <link:definition> 300110 - Disclosure - Business Acquisitions (Tables) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType roleURI="http://henryschein.com/role/BusinessAcquisitionsAcquisitionConsiderationDetails" id="ELRID_BusinessAcquisitionsAcquisitionConsiderationDetails"> |
| <link:definition> 400111 - Disclosure - Business Acquisitions - Acquisition consideration (Details) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType roleURI="http://henryschein.com/role/DebtPrivatePlacementFacilitiesNarrative2Details" id="ELRID_DebtPrivatePlacementFacilitiesNarrative2Details"> |
| <link:definition> 400066 - Disclosure - Debt - Private Placement Facilities - Narrative 2 (Details) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/> |
| <import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/> |
| <import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd"/> |
| <import namespace="http://xbrl.sec.gov/dei/2019-01-31" schemaLocation="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd"/> |
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| <import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd"/> |
| <import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd"/> |
| <element name="RedeemableNoncontrollingInterestsTextBlock" id="hsic_RedeemableNoncontrollingInterestsTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/> |
| <element name="HealthcareDistributionMember" id="hsic_HealthcareDistributionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/> |
| <element name="TechnologyMember" id="hsic_TechnologyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/> |
| <element name="DentalMember" id="hsic_DentalMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/> |
| <element name="MedicalMember" id="hsic_MedicalMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/> |
| <element name="AnimalHealthMember" id="hsic_AnimalHealthMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/> |
| <element name="AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentAttributableToRedeemableNoncontrollingInterestNetOfTax" id="hsic_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentAttributableToRedeemableNoncontrollingInterestNetOfTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/> |
| <element name="ComprehensiveIncomeNetOfApplicableTaxesAbstract" id="hsic_ComprehensiveIncomeNetOfApplicableTaxesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/> |
| <element name="ComprehensiveIncomeNetOfTaxAttributableToRedeemableNoncontrollingInterest" id="hsic_ComprehensiveIncomeNetOfTaxAttributableToRedeemableNoncontrollingInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/> |
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| <element name="CommittmentFeeForUsageUpperFacilityLimit" id="hsic_CommittmentFeeForUsageUpperFacilityLimit" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant"/> |
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| <element name="AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationOtherLongtermIncentivePlansSettledInCash" id="hsic_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationOtherLongtermIncentivePlansSettledInCash" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/> |
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| <element name="NonEmployeeDirectorStockIncentivePlanMember" id="hsic_NonEmployeeDirectorStockIncentivePlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/> |
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| <element name="PaymentsToNoncontrollingInterestsAndPaymentsForRepurchaseOfRedeemableNoncontrollingInterest" id="hsic_PaymentsToNoncontrollingInterestsAndPaymentsForRepurchaseOfRedeemableNoncontrollingInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/> |
| <element name="RestrictedStockAndRestrictedStockUnitAwardsMember" id="hsic_RestrictedStockAndRestrictedStockUnitAwardsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/> |
| <element name="TimeBasedRestrictedStockRestrictedUnitsMember" id="hsic_TimeBasedRestrictedStockRestrictedUnitsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/> |
| <element name="PerformanceBasedRestrictedStockRestrictedUnitsMember" id="hsic_PerformanceBasedRestrictedStockRestrictedUnitsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/> |
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