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| <link:definition> 9954512 - Disclosure - EMPLOYEE BENEFIT PLANS - Schedule of Change in Benefit Obligation, Change in Plan Assets and Components of Funded Status (Details) </link:definition> |
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| <xs:element id="avnt_EffectiveIncomeTaxRateReconciliationTaxImpairmentsOfInvestmentsInAffiliates" abstract="false" name="EffectiveIncomeTaxRateReconciliationTaxImpairmentsOfInvestmentsInAffiliates" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/> |
| <xs:element id="avnt_DerivativeInstrumentMaturityPeriodAxis" abstract="true" name="DerivativeInstrumentMaturityPeriodAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/> |
| <xs:element id="avnt_DefinedBenefitPlanCommonCollectiveTrustDomesticEquityMember" abstract="true" name="DefinedBenefitPlanCommonCollectiveTrustDomesticEquityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="avnt_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsCurrent" abstract="false" name="DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="avnt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExercisableWeightedAverageExercisePrice" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExercisableWeightedAverageExercisePrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/> |
| <xs:element id="avnt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresEstimatedPercentage" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresEstimatedPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/> |
| <xs:element id="avnt_TaxesPayableNoncurrent" abstract="false" name="TaxesPayableNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="avnt_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostYearHealthCareCostTrendRateReachesUltimateTrendRate" abstract="false" name="DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostYearHealthCareCostTrendRateReachesUltimateTrendRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:gYearItemType"/> |
| <xs:element id="avnt_RestructuringReservePaymentsUtilizationAndForeignCurrencyTranslation" abstract="false" name="RestructuringReservePaymentsUtilizationAndForeignCurrencyTranslation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="avnt_PatentsTechnologyAndOtherIntangibleAssetMember" abstract="true" name="PatentsTechnologyAndOtherIntangibleAssetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="avnt_A20242037OrIndefiniteMember" abstract="true" name="A20242037OrIndefiniteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="avnt_ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodAppreciationCap" abstract="false" name="ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodAppreciationCap" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/> |
| <xs:element id="avnt_SeniorTermLoanDue2029Member" abstract="true" name="SeniorTermLoanDue2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="avnt_DerivativeInstrumentMaturityPeriodDomain" abstract="true" name="DerivativeInstrumentMaturityPeriodDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="avnt_EffectiveIncomeTaxRateReconciliationNonDeductibleAcquisitionRelatedCostsPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationNonDeductibleAcquisitionRelatedCostsPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/> |
| <xs:element id="avnt_OtherComprehensiveIncomeLossNetInvestmentHedgeAndCashFlowHedgeGainLoss" abstract="false" name="OtherComprehensiveIncomeLossNetInvestmentHedgeAndCashFlowHedgeGainLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="avnt_AmortizationOfInventoryStepUp" abstract="false" name="AmortizationOfInventoryStepUp" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="avnt_DefinedBenefitPlanBenefitObligationSalaryIncreaseDecrease" abstract="false" name="DefinedBenefitPlanBenefitObligationSalaryIncreaseDecrease" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="avnt_SevenPointOneTwoFivePercentSeniorNotesDueTwoThousandThirtyMember" abstract="true" name="SevenPointOneTwoFivePercentSeniorNotesDueTwoThousandThirtyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="avnt_ScheduleOfSignificantAccountingPoliciesTable" abstract="true" name="ScheduleOfSignificantAccountingPoliciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/> |
| <xs:element id="avnt_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationHealthCareCostTrendRateAssumedNextFiscalYear" abstract="false" name="DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationHealthCareCostTrendRateAssumedNextFiscalYear" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/> |
| <xs:element id="avnt_EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncomeAndFDIIPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncomeAndFDIIPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/> |
| <xs:element id="avnt_SpecialtyEngineeredMaterialsMember" abstract="true" name="SpecialtyEngineeredMaterialsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="avnt_DefinedBenefitPlanGlobalEquityMember" abstract="true" name="DefinedBenefitPlanGlobalEquityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="avnt_UnrecognizedTaxBenefitsExpenseOther" abstract="false" name="UnrecognizedTaxBenefitsExpenseOther" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="avnt_FiniteLivedIntangibleAssetsCurrencyTranslation" abstract="false" name="FiniteLivedIntangibleAssetsCurrencyTranslation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="avnt_DeferredTaxAssetsCapitalizedAndCarryforwardInterest" abstract="false" name="DeferredTaxAssetsCapitalizedAndCarryforwardInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="avnt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExercisableAggregateIntrinsicValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExercisableAggregateIntrinsicValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="avnt_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAccountsReceivable" abstract="false" name="BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAccountsReceivable" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="avnt_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentNonControllingInterests" abstract="false" name="BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentNonControllingInterests" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="avnt_RevolvingCreditFacilityDue2026Member" abstract="true" name="RevolvingCreditFacilityDue2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| <xs:element id="avnt_CalvertCityMember" abstract="true" name="CalvertCityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/> |
| </xs:schema> |