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| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 2119101 - Disclosure - BUSINESS SEGMENT INFORMATION Business Segment information (Notes) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 2419403 - Disclosure - BUSINESS SEGMENT INFORMATION (Details) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 2119100 - Disclosure - BUSINESS SEGMENT INFORMATION (Notes) </link:definition> |
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| <link:definition> 2319302 - Disclosure - BUSINESS SEGMENT INFORMATION (Tables) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 2112100 - Disclosure - COMMITMENTS AND CONTINGENCIES </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 2412401 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="CondensedConsolidatedBalanceSheetsUnaudited" roleURI="http://www.labcorp.com/role/CondensedConsolidatedBalanceSheetsUnaudited"> |
| <link:definition> 1001000 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="CondensedConsolidatedBalanceSheetsUnauditedParentheticals" roleURI="http://www.labcorp.com/role/CondensedConsolidatedBalanceSheetsUnauditedParentheticals"> |
| <link:definition> 1001501 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parentheticals) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 1005000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 1004000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 1003000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (Unaudited) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="CondensedConsolidatedStatementsOfOperationsUnaudited" roleURI="http://www.labcorp.com/role/CondensedConsolidatedStatementsOfOperationsUnaudited"> |
| <link:definition> 1002000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="Debt" roleURI="http://www.labcorp.com/role/Debt"> |
| <link:definition> 2109100 - Disclosure - DEBT </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="DebtConvertibleSubordinatedNotesDetails" roleURI="http://www.labcorp.com/role/DebtConvertibleSubordinatedNotesDetails"> |
| <link:definition> 2409405 - Disclosure - DEBT (Convertible Subordinated Notes) (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="DebtCreditFacilitiesDetails" roleURI="http://www.labcorp.com/role/DebtCreditFacilitiesDetails"> |
| <link:definition> 2409406 - Disclosure - DEBT (Credit Facilities) (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="DebtLongTermDebtTableDetails" roleURI="http://www.labcorp.com/role/DebtLongTermDebtTableDetails"> |
| <link:definition> 2409403 - Disclosure - DEBT (Long-term debt) (Table) (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="DebtSeniorNotesDetails" roleURI="http://www.labcorp.com/role/DebtSeniorNotesDetails"> |
| <link:definition> 2409404 - Disclosure - DEBT (Senior Notes) (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="DebtShortTermBorrowingsAndCurrentPortionOfLongTermDebtTableDetails" roleURI="http://www.labcorp.com/role/DebtShortTermBorrowingsAndCurrentPortionOfLongTermDebtTableDetails"> |
| <link:definition> 2409402 - Disclosure - DEBT (Short-term borrowings and current portion of long-term debt) (Table) (Details) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="DebtTables" roleURI="http://www.labcorp.com/role/DebtTables"> |
| <link:definition> 2309301 - Disclosure - DEBT (Tables) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="DerivativeInstrumentsAndHedgingActivities" roleURI="http://www.labcorp.com/role/DerivativeInstrumentsAndHedgingActivities"> |
| <link:definition> 2115100 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 2415402 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 2315301 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="DocumentAndEntityInformationDocument" roleURI="http://www.labcorp.com/role/DocumentAndEntityInformationDocument"> |
| <link:definition> 0001000 - Document - Document and Entity Information Document </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="EarningsPerShare" roleURI="http://www.labcorp.com/role/EarningsPerShare"> |
| <link:definition> 2103100 - Disclosure - EARNINGS PER SHARE </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="EarningsPerSharePotentialCommonSharesNotIncludedInComputationOfDilutedEarningsPerShareDetails" roleURI="http://www.labcorp.com/role/EarningsPerSharePotentialCommonSharesNotIncludedInComputationOfDilutedEarningsPerShareDetails"> |
| <link:definition> 2403403 - Disclosure - EARNINGS PER SHARE (Potential common shares not included in computation of diluted earnings per share) (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="EarningsPerShareReconciliationOfBasicEarningsPerShareToDilutedEarningsPerShareDetails" roleURI="http://www.labcorp.com/role/EarningsPerShareReconciliationOfBasicEarningsPerShareToDilutedEarningsPerShareDetails"> |
| <link:definition> 2403402 - Disclosure - EARNINGS PER SHARE (Reconciliation of Basic Earnings Per Share to Diluted Earnings Per Share) (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="EarningsPerShareTables" roleURI="http://www.labcorp.com/role/EarningsPerShareTables"> |
| <link:definition> 2303301 - Disclosure - EARNINGS PER SHARE (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="FairValueMeasurements" roleURI="http://www.labcorp.com/role/FairValueMeasurements"> |
| <link:definition> 2114100 - Disclosure - FAIR VALUE MEASUREMENTS </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 2414402 - Disclosure - FAIR VALUE MEASUREMENTS (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="FairValueMeasurementsTables" roleURI="http://www.labcorp.com/role/FairValueMeasurementsTables"> |
| <link:definition> 2314301 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="GoodwillAndIntangibleAssets" roleURI="http://www.labcorp.com/role/GoodwillAndIntangibleAssets"> |
| <link:definition> 2108100 - Disclosure - GOODWILL AND INTANGIBLE ASSETS </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="GoodwillAndIntangibleAssetsChangesInCarryingAmountOfGoodwillDetails" roleURI="http://www.labcorp.com/role/GoodwillAndIntangibleAssetsChangesInCarryingAmountOfGoodwillDetails"> |
| <link:definition> 2408402 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Changes in Carrying Amount of Goodwill) (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="GoodwillAndIntangibleAssetsComponentsOfIdentifiableIntangibleAssetsDetails" roleURI="http://www.labcorp.com/role/GoodwillAndIntangibleAssetsComponentsOfIdentifiableIntangibleAssetsDetails"> |
| <link:definition> 2408403 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Components of identifiable intangible assets) (Details) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 2408404 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 2308301 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Tables) </link:definition> |
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| <link:definition> 2111100 - Disclosure - INCOME TAXES </link:definition> |
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| | | <link:roleType id="IncomeTaxesDetails" roleURI="http://www.labcorp.com/role/IncomeTaxesDetails"> |
| <link:definition> 2411401 - Disclosure - INCOME TAXES (Details) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="NoncontrollingInterestPuts" roleURI="http://www.labcorp.com/role/NoncontrollingInterestPuts"> |
| <link:definition> 2104100 - Disclosure - NONCONTROLLING INTEREST PUTS </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="NoncontrollingInterestPutsDetails" roleURI="http://www.labcorp.com/role/NoncontrollingInterestPutsDetails"> |
| <link:definition> 2404401 - Disclosure - NONCONTROLLING INTEREST PUTS (Details) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="PensionAndPostretirementPlans" roleURI="http://www.labcorp.com/role/PensionAndPostretirementPlans"> |
| <link:definition> 2113100 - Disclosure - PENSION AND POSTRETIREMENT PLANS </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="PensionAndPostretirementPlansDefinedContributionPlansDetails" roleURI="http://www.labcorp.com/role/PensionAndPostretirementPlansDefinedContributionPlansDetails"> |
| <link:definition> 2413403 - Disclosure - PENSION AND POSTRETIREMENT PLANS Defined Contribution Plans (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="PensionAndPostretirementPlansDetails" roleURI="http://www.labcorp.com/role/PensionAndPostretirementPlansDetails"> |
| <link:definition> 2413402 - Disclosure - PENSION AND POSTRETIREMENT PLANS (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="PensionAndPostretirementPlansTables" roleURI="http://www.labcorp.com/role/PensionAndPostretirementPlansTables"> |
| <link:definition> 2313301 - Disclosure - PENSION AND POSTRETIREMENT PLANS (Tables) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="PreferredStockAndCommonShareholdersEquity" roleURI="http://www.labcorp.com/role/PreferredStockAndCommonShareholdersEquity"> |
| <link:definition> 2110100 - Disclosure - PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="PreferredStockAndCommonShareholdersEquityDetails" roleURI="http://www.labcorp.com/role/PreferredStockAndCommonShareholdersEquityDetails"> |
| <link:definition> 2410402 - Disclosure - PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="PreferredStockAndCommonShareholdersEquityPreferredStockAndCommonShareholdersEquityAccumulatedOtherComprehensiveEarningsDetails" roleURI="http://www.labcorp.com/role/PreferredStockAndCommonShareholdersEquityPreferredStockAndCommonShareholdersEquityAccumulatedOtherComprehensiveEarningsDetails"> |
| <link:definition> 2410403 - Disclosure - PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY - Accumulated Other Comprehensive Earnings (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
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| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="PreferredStockAndCommonShareholdersEquityTables" roleURI="http://www.labcorp.com/role/PreferredStockAndCommonShareholdersEquityTables"> |
| <link:definition> 2310301 - Disclosure - PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="RestructuringAndOtherSpecialCharges" roleURI="http://www.labcorp.com/role/RestructuringAndOtherSpecialCharges"> |
| <link:definition> 2105100 - Disclosure - RESTRUCTURING AND OTHER SPECIAL CHARGES </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="RestructuringAndOtherSpecialChargesDetails" roleURI="http://www.labcorp.com/role/RestructuringAndOtherSpecialChargesDetails"> |
| <link:definition> 2405402 - Disclosure - RESTRUCTURING AND OTHER SPECIAL CHARGES (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="RestructuringAndOtherSpecialChargesRestructuringAndOtherSpecialChargesDetailTables" roleURI="http://www.labcorp.com/role/RestructuringAndOtherSpecialChargesRestructuringAndOtherSpecialChargesDetailTables"> |
| <link:definition> 2305301 - Disclosure - RESTRUCTURING AND OTHER SPECIAL CHARGES Restructuring and Other Special Charges Detail (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| </link:roleType> |
| | | <link:roleType id="RestructuringReserves" roleURI="http://www.labcorp.com/role/RestructuringReserves"> |
| <link:definition> 2106100 - Disclosure - RESTRUCTURING RESERVES </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="RestructuringReservesDetails" roleURI="http://www.labcorp.com/role/RestructuringReservesDetails"> |
| <link:definition> 2406401 - Disclosure - RESTRUCTURING RESERVES (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="SupplementalCashFlowInformation" roleURI="http://www.labcorp.com/role/SupplementalCashFlowInformation"> |
| <link:definition> 2116100 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="SupplementalCashFlowInformationDetails" roleURI="http://www.labcorp.com/role/SupplementalCashFlowInformationDetails"> |
| <link:definition> 2416402 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION (Details) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="SupplementalCashFlowInformationTables" roleURI="http://www.labcorp.com/role/SupplementalCashFlowInformationTables"> |
| <link:definition> 2316301 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION (Tables) </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | </xsd:appinfo> |
| | </xsd:annotation> |
| <xsd:element abstract="true" id="lh_A60DayDebtBridgeTrauncheDomain" name="A60DayDebtBridgeTrauncheDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Accretedinterestonzerocouponnotes" name="Accretedinterestonzerocouponnotes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_AccumulatedOtherComprehensiveEarningsRollForward" name="AccumulatedOtherComprehensiveEarningsRollForward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_AcquisitionFinancing" name="AcquisitionFinancing" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/> |
| <xsd:element abstract="true" id="lh_AmortizationexpenseMember" name="AmortizationexpenseMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_BridgeTermCreditFacilityAgreementMaximumBorrowingAmount" name="BridgeTermCreditFacilityAgreementMaximumBorrowingAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/> |
| <xsd:element abstract="true" id="lh_BusinessAcquisitionsAbstract" name="BusinessAcquisitionsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Businessacquisitionproformaoperatingincomeloss" name="Businessacquisitionproformaoperatingincomeloss" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_CashPaidDuringPeriodForAbstract" name="CashPaidDuringPeriodForAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_CashonHandUsedforAcquisition" name="CashonHandUsedforAcquisition" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/> |
| <xsd:element id="lh_Cashpaidforacquisition" name="Cashpaidforacquisition" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/> |
| <xsd:element id="lh_Changeinaccrualforpropertyplantandequipment" name="Changeinaccrualforpropertyplantandequipment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Changeincontrolandseverancepayments" name="Changeincontrolandseverancepayments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_ChangesInCommonSharesIssuedAndHeldInTreasuryTableTextBlock" name="ChangesInCommonSharesIssuedAndHeldInTreasuryTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_ClinicaldiagnosticslaboratoryMember" name="ClinicaldiagnosticslaboratoryMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Codefendantsapportionedresponsibility" name="Codefendantsapportionedresponsibility" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_CommonSharesHeldInTreasuryRollforwardAbstract" name="CommonSharesHeldInTreasuryRollforwardAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_CommonSharesIssuedRollforwardAbstract" name="CommonSharesIssuedRollforwardAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_CommonSharesOutstandingRollforwardAbstract" name="CommonSharesOutstandingRollforwardAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_CommonStockRepurchaseAuthorizationOutstanding" name="CommonStockRepurchaseAuthorizationOutstanding" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/> |
| <xsd:element id="lh_CommonsStockIssuedDuringPeriodSharesEmployeeStockPlans" name="CommonsStockIssuedDuringPeriodSharesEmployeeStockPlans" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Companysapportionedresponsibility" name="Companysapportionedresponsibility" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Conversionofconvertibledebt" name="Conversionofconvertibledebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_CostMethodInvestmentsMaximumOwnershipPercentage" name="CostMethodInvestmentsMaximumOwnershipPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_CovanceDrugDevelopmentMember" name="CovanceDrugDevelopmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_CovanceInc.Member" name="CovanceInc.Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_CovanceMember" name="CovanceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_CreditFacilityMaximumLettersofCredit" name="CreditFacilityMaximumLettersofCredit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/> |
| <xsd:element id="lh_CreditFacilityMaximumSwingLineBorrowings" name="CreditFacilityMaximumSwingLineBorrowings" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/> |
| <xsd:element id="lh_CreditFacilityOptiontoIncrease" name="CreditFacilityOptiontoIncrease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/> |
| <xsd:element id="lh_DebtConversionDateOfSubordinatedNotesAndIndenture" name="DebtConversionDateOfSubordinatedNotesAndIndenture" nillable="true" substitutionGroup="xbrli:item" type="xbrli:dateItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_DebtCovenantRequirementForNumberOfConsecutiveFiscalQuarters" name="DebtCovenantRequirementForNumberOfConsecutiveFiscalQuarters" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_DebtInstrumentZeroCouponSubordinatedNotesMinimumContingentCashInterestRate" name="DebtInstrumentZeroCouponSubordinatedNotesMinimumContingentCashInterestRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_DebtToEbitdaLeverageRatio" name="DebtToEbitdaLeverageRatio" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant"/> |
| <xsd:element id="lh_DeferredPaymentsonAcquisitionLiabilities" name="DeferredPaymentsonAcquisitionLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_DeferredtaxliabilityDomain" name="DeferredtaxliabilityDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_DefinedBenefitPlanExpectedRateOfReturnOnAssetsOtherAssets" name="DefinedBenefitPlanExpectedRateOfReturnOnAssetsOtherAssets" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_DepreciationExpenseMember" name="DepreciationExpenseMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_DiscretionaryContributionPercentageMaximum" name="DiscretionaryContributionPercentageMaximum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_DiscretionaryContributionPercentageMininum" name="DiscretionaryContributionPercentageMininum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_EmployeeSeveranceBenefitsRelatedRestructuringReserveAccrualAdjustment" name="EmployeeSeveranceBenefitsRelatedRestructuringReserveAccrualAdjustment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Employertaxesonacceleratedequity" name="Employertaxesonacceleratedequity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_ExcludingCovanceMember" name="ExcludingCovanceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_FairValueLiabilitiesMeasuredOnRecurringBasisDeferredCompensationLiability" name="FairValueLiabilitiesMeasuredOnRecurringBasisDeferredCompensationLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/> |
| <xsd:element id="lh_FairValueLiabilitiesMeasuredOnRecurringBasisNoncontrollingInterestPuts" name="FairValueLiabilitiesMeasuredOnRecurringBasisNoncontrollingInterestPuts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/> |
| <xsd:element abstract="true" id="lh_IncomeAbstract" name="IncomeAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_IncomeLossfromContinuingOperationsBeforeIncomeTaxesandNoncontrollingInterest" name="IncomeLossfromContinuingOperationsBeforeIncomeTaxesandNoncontrollingInterest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_IncomeTaxBenefitMinimumCertaintyPercentage" name="IncomeTaxBenefitMinimumCertaintyPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant"/> |
| <xsd:element id="lh_IncreaseDecreaseInAccruedExpensesAndOther" name="IncreaseDecreaseInAccruedExpensesAndOther" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_InterestPaidInCash" name="InterestPaidInCash" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Issuanceofcommonstockunderemployeeplans" name="Issuanceofcommonstockunderemployeeplans" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_LabCorpDiagnosticsMember" name="LabCorpDiagnosticsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_LossContingencyDamagesAwardedGross" name="LossContingencyDamagesAwardedGross" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_LossContingencyDamagesAwardedNet" name="LossContingencyDamagesAwardedNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Losscontingencyreduceddamagesawardedgross" name="Losscontingencyreduceddamagesawardedgross" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Losscontingencyreduceddamagesawardednet" name="Losscontingencyreduceddamagesawardednet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Makewholepayment" name="Makewholepayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_MinimumPercentageMarketToCalculatedPriceAtWhichContingentCashInterestIsDue" name="MinimumPercentageMarketToCalculatedPriceAtWhichContingentCashInterestIsDue" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_NetDefinedBenefitPlanAmortizationAndDeferral" name="NetDefinedBenefitPlanAmortizationAndDeferral" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_NetRestructuringAndOtherSpecialCharges" name="NetRestructuringAndOtherSpecialCharges" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_NetRestructuringCharges" name="NetRestructuringCharges" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_NonElectiveContribution" name="NonElectiveContribution" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Noncashconsideration" name="Noncashconsideration" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/> |
| <xsd:element id="lh_Noncashconversionofzerocouponconvertibledebt" name="Noncashconversionofzerocouponconvertibledebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_NoncontrollingInterestMezzanineEquity" name="NoncontrollingInterestMezzanineEquity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/> |
| <xsd:element abstract="true" id="lh_NoncontrollingInterestPutsAbstract" name="NoncontrollingInterestPutsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_NumberOfDaysUsedToEstablishAverageMarketPriceOfZeroCouponSubordinatedNotes" name="NumberOfDaysUsedToEstablishAverageMarketPriceOfZeroCouponSubordinatedNotes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:normalizedStringItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_NumberOfFeaturesConsideredToBeEmbeddedDerivativeInstruments" name="NumberOfFeaturesConsideredToBeEmbeddedDerivativeInstruments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant"/> |
| <xsd:element id="lh_NumberOfRecipients" name="NumberOfRecipients" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant"/> |
| <xsd:element id="lh_OtherSpecialCharges" name="OtherSpecialCharges" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Otherlongtermdebtacquistionfinancing" name="Otherlongtermdebtacquistionfinancing" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/> |
| <xsd:element abstract="true" id="lh_OutstandingStockRepurchaseAuthorizationAbstract" name="OutstandingStockRepurchaseAuthorizationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_PatentsLicensesAndTechnologyMember" name="PatentsLicensesAndTechnologyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_PaymentreductionbyAssemblyBillNo.1494" name="PaymentreductionbyAssemblyBillNo.1494" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_PaymentreductionbyAssemblyBillNo.97" name="PaymentreductionbyAssemblyBillNo.97" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_PaymentsOnZeroCouponNotes" name="PaymentsOnZeroCouponNotes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Paymentsonbridgeloan" name="Paymentsonbridgeloan" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_PerShareAmountAbstract" name="PerShareAmountAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Percentoflowestmaximumcaponpayments" name="Percentoflowestmaximumcaponpayments" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Postcombinationaccelerationofstockcompensationexpense" name="Postcombinationaccelerationofstockcompensationexpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_PreviouslyRecordedLitigationReserveInConnectionWithFalseClaimsActLawsuit" name="PreviouslyRecordedLitigationReserveInConnectionWithFalseClaimsActLawsuit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/> |
| <xsd:element id="lh_PrincipalAmountOfZeroCouponSubordinatedNotes" name="PrincipalAmountOfZeroCouponSubordinatedNotes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/> |
| <xsd:element id="lh_Proceedsfrombridgeloan" name="Proceedsfrombridgeloan" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Proceedsfromissuanceofstocktoemployees" name="Proceedsfromissuanceofstocktoemployees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_ProposedDamagesPerViolation" name="ProposedDamagesPerViolation" nillable="true" substitutionGroup="xbrli:item" type="us-types:perUnitItemType" xbrli:periodType="instant"/> |
| <xsd:element id="lh_ReductionforPlaintiffNegligence" name="ReductionforPlaintiffNegligence" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_RestrictedStockAwardsAndPerformanceSharesSurrendered" name="RestrictedStockAwardsAndPerformanceSharesSurrendered" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_RestructuringReserveSettledWithCashAndOtherAdjustment" name="RestructuringReserveSettledWithCashAndOtherAdjustment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element id="lh_RevolvingCreditFacilitycovenanttermsceiling" name="RevolvingCreditFacilitycovenanttermsceiling" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant"/> |
| <xsd:element abstract="true" id="lh_ScheduleOfOtherIntangibleAssetsByMajorClassAxis" name="ScheduleOfOtherIntangibleAssetsByMajorClassAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_ScheduleOfOtherIntangibleAssetsByMajorClassDomain" name="ScheduleOfOtherIntangibleAssetsByMajorClassDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_SegmentReconciliationofOperatingIncometoConsolidatedAbstract" name="SegmentReconciliationofOperatingIncometoConsolidatedAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_SeniorNotesDue2015Member" name="SeniorNotesDue2015Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_SeniorNotesDue2016Member" name="SeniorNotesDue2016Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_SeniorNotesDue2017Member" name="SeniorNotesDue2017Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_SeniorNotesDue2020Member" name="SeniorNotesDue2020Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_SeniorNotesDue2022Member" name="SeniorNotesDue2022Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_SeniorNotesFairValue" name="SeniorNotesFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/> |
| <xsd:element abstract="true" id="lh_Seniornotesdue2018Member" name="Seniornotesdue2018Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_Seniornotesdue2023Member" name="Seniornotesdue2023Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_Seniornotesdue2025Member" name="Seniornotesdue2025Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_Seniornotesdue2025MemberMember" name="Seniornotesdue2025MemberMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_Seniornotesdue2045Member" name="Seniornotesdue2045Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_SharesAbstract" name="SharesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Sharestobegrantedperacquireeshareoutstandinginproposedacquisition" name="Sharestobegrantedperacquireeshareoutstandinginproposedacquisition" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/> |
| <xsd:element id="lh_StockConversionRateForZeroCouponSubordinatedNotes" name="StockConversionRateForZeroCouponSubordinatedNotes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant"/> |
| <xsd:element abstract="true" id="lh_TargetRatiotoResumeShareRepurchaseMember" name="TargetRatiotoResumeShareRepurchaseMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_TermLoanMember" name="TermLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Totalacquisitionconsiderationcashandnoncash" name="Totalacquisitionconsiderationcashandnoncash" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/> |
| <xsd:element id="lh_Transactioncosts" name="Transactioncosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_TriStateClinicalLaboratoryServicesLlcMember" name="TriStateClinicalLaboratoryServicesLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_Writeoffofbridgeandotherdeferredfinancingcosts" name="Writeoffofbridgeandotherdeferredfinancingcosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_ZeroCouponConvertibleSubordinatedNotesLineItems" name="ZeroCouponConvertibleSubordinatedNotesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element abstract="true" id="lh_ZeroCouponConvertibleSubordinatedNotesTable" name="ZeroCouponConvertibleSubordinatedNotesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration"/> |
| <xsd:element id="lh_ZeroCouponNotesFairValue" name="ZeroCouponNotesFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/> |
| </xsd:schema> |