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  <element name="LandCoalAndMineralRightsPolicyTextBlock" id="aa_LandCoalAndMineralRightsPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="LayoffCostsOfPositionsEliminationsNetOfTax" id="aa_LayoffCostsOfPositionsEliminationsNetOfTax" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LeaseAndContractTerminationMember" id="aa_LeaseAndContractTerminationMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LengthOfTransmissionLine" id="aa_LengthOfTransmissionLine" type="num:lengthItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LettersOfCreditSublimitUnderCreditFacility" id="aa_LettersOfCreditSublimitUnderCreditFacility" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LineOfCreditFacilityAmountCommitted" id="aa_LineOfCreditFacilityAmountCommitted" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LineOfCreditFacilityAmountOfRemainingBalancePayable" id="aa_LineOfCreditFacilityAmountOfRemainingBalancePayable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LineOfCreditFacilityExtendedMaturityDate" id="aa_LineOfCreditFacilityExtendedMaturityDate" type="us-types:dateStringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LineOfCreditFacilityMaturityPayment" id="aa_LineOfCreditFacilityMaturityPayment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LineOfCreditFacilityTerm" id="aa_LineOfCreditFacilityTerm" type="xbrli:decimalItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LitigationMatterMember" id="aa_LitigationMatterMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LitigationMattersPolicyTextBlock" id="aa_LitigationMattersPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LoanAgreementWithBndesMember" id="aa_LoanAgreementWithBndesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LongTermDebtDueWithinOneYearMember" id="aa_LongTermDebtDueWithinOneYearMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LongTermNonPublicDebtNoncurrent" id="aa_LongTermNonPublicDebtNoncurrent" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LongTermPublicDebtNoncurrent" id="aa_LongTermPublicDebtNoncurrent" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LossContingencyEstimateOfPossibleLossIncludingSurchargesAndInterest" id="aa_LossContingencyEstimateOfPossibleLossIncludingSurchargesAndInterest" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LossContingencyRecoveryFromThirdParty" id="aa_LossContingencyRecoveryFromThirdParty" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LossContingencySettlementAgreementAmount" id="aa_LossContingencySettlementAgreementAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LossContingencySettlementAgreementConsiderationAmount" id="aa_LossContingencySettlementAgreementConsiderationAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LossContingencySettlementAmount" id="aa_LossContingencySettlementAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MaadenJointVentureMember" id="aa_MaadenJointVentureMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MachadinhoAndBarraGrandeMember" id="aa_MachadinhoAndBarraGrandeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MachadinhoMember" id="aa_MachadinhoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MarginHeldMember" id="aa_MarginHeldMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MarginPostedMember" id="aa_MarginPostedMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MarketCapitalizationOfCommonStock" id="aa_MarketCapitalizationOfCommonStock" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MassenaNyMember" id="aa_MassenaNyMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MaturityDataOfFutureAluminumPrice" id="aa_MaturityDataOfFutureAluminumPrice" type="xbrli:gYearItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MaturityDateOfElectricityBeyondForwardCurve" id="aa_MaturityDateOfElectricityBeyondForwardCurve" type="xbrli:gYearItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MaximumAmountOfCashPaymentsExpectedToBePaidBeyondCurrentAnnualPeriod" id="aa_MaximumAmountOfCashPaymentsExpectedToBePaidBeyondCurrentAnnualPeriod" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MaximumHedgingContractsPeriod" id="aa_MaximumHedgingContractsPeriod" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MaximumUnamortizedTaxDeductionRateOnGoodwill" id="aa_MaximumUnamortizedTaxDeductionRateOnGoodwill" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MeasurementOfNetDeferredTaxAssetAndNoncashChargeToEarnings" id="aa_MeasurementOfNetDeferredTaxAssetAndNoncashChargeToEarnings" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MedianMember" id="aa_MedianMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MedicarePartDSubsidyReceiptsMember" id="aa_MedicarePartDSubsidyReceiptsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MidwesternDisasterAreaRevenueBondsSeriesTwoThousandTwelveDueTwoThousandFortyTwoMember" id="aa_MidwesternDisasterAreaRevenueBondsSeriesTwoThousandTwelveDueTwoThousandFortyTwoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MineraoRioDoNorteSMember" id="aa_MineraoRioDoNorteSMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MinimumAmountOfCashPaymentsExpectedToBePaidBeyondCurrentAnnualPeriod" id="aa_MinimumAmountOfCashPaymentsExpectedToBePaidBeyondCurrentAnnualPeriod" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MinimumNumberOfReportingUnitsBeingSubjectedForGoodwillImpairmentTest" id="aa_MinimumNumberOfReportingUnitsBeingSubjectedForGoodwillImpairmentTest" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MinimumPercentageOfEstimatedFairValueOfReportingUnitToBeLessThanCarryingAmountOfGoodwill" id="aa_MinimumPercentageOfEstimatedFairValueOfReportingUnitToBeLessThanCarryingAmountOfGoodwill" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MinimumRequiredCashContributionToPensionPlan" id="aa_MinimumRequiredCashContributionToPensionPlan" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MinimumUnamortizedTaxDeductionRateOnGoodwill" id="aa_MinimumUnamortizedTaxDeductionRateOnGoodwill" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MiningPeriod" id="aa_MiningPeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MinorityInterestRemainingOwnershipPercentageByNoncontrollingOwners" id="aa_MinorityInterestRemainingOwnershipPercentageByNoncontrollingOwners" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MosjoenMember" id="aa_MosjoenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NegligenceAwardMember" id="aa_NegligenceAwardMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NetCarryingValueOfAssets" id="aa_NetCarryingValueOfAssets" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NetFairValuesOfOutstandingDerivativeContractsAndEffectOfHypotheticalChangeIncreaseOrDecreaseOfTenPercentInMarketPricesOrRatesTextBlock" id="aa_NetFairValuesOfOutstandingDerivativeContractsAndEffectOfHypotheticalChangeIncreaseOrDecreaseOfTenPercentInMarketPricesOrRatesTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NetOtherPostRetirementBenefitsMember" id="aa_NetOtherPostRetirementBenefitsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NetPayableWhichRepresentsSecuritiesPurchasedNotYetSettledLessInterestAndDividendsEarnedOnVariousInvestments" id="aa_NetPayableWhichRepresentsSecuritiesPurchasedNotYetSettledLessInterestAndDividendsEarnedOnVariousInvestments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NetPeriodicBenefitCostMember" id="aa_NetPeriodicBenefitCostMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NetProceedsFromDebtOffering" id="aa_NetProceedsFromDebtOffering" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NoExpirationMember" id="aa_NoExpirationMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NonCurrentLiabilitiesAndDeferredCreditsMember" id="aa_NonCurrentLiabilitiesAndDeferredCreditsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NoncurrentReceivablesMember" id="aa_NoncurrentReceivablesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NonvestedSharesWithForfeitableDividends" id="aa_NonvestedSharesWithForfeitableDividends" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NoOfYearOverActualAnnualHealthcareCostTrendExperience" id="aa_NoOfYearOverActualAnnualHealthcareCostTrendExperience" type="xbrli:positiveIntegerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfCleanupLocations" id="aa_NumberOfCleanupLocations" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfCommonStockReservedForIssuanceUponConversionOfConvertibleNotesShares" id="aa_NumberOfCommonStockReservedForIssuanceUponConversionOfConvertibleNotesShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfCommonStockReservedUnderStockBasedCompensationPlansShares" id="aa_NumberOfCommonStockReservedUnderStockBasedCompensationPlansShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfContracts" id="aa_NumberOfContracts" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfDaysRequiredToDismissLawsuit" id="aa_NumberOfDaysRequiredToDismissLawsuit" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfEmployees" id="aa_NumberOfEmployees" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfEmployeesAssociatedWithLayoffCosts" id="aa_NumberOfEmployeesAssociatedWithLayoffCosts" type="xbrli:positiveIntegerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfEmployeesCoveredByLaborAgreement" id="aa_NumberOfEmployeesCoveredByLaborAgreement" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfEuropeanSmeltersManagementApprovedPartialOrFullCurtailmentFor" id="aa_NumberOfEuropeanSmeltersManagementApprovedPartialOrFullCurtailmentFor" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfFacilitiesAcquired" id="aa_NumberOfFacilitiesAcquired" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfHydroelectricGeneratingStationsAndDams" id="aa_NumberOfHydroelectricGeneratingStationsAndDams" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfInstallments" id="aa_NumberOfInstallments" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfLocations" id="aa_NumberOfLocations" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfLocationsAffectedByLaborAgreement" id="aa_NumberOfLocationsAffectedByLaborAgreement" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfPositions" id="aa_NumberOfPositions" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfPotlinesAtFacility" id="aa_NumberOfPotlinesAtFacility" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfPotlinesToBeShutdownAndDemolished" id="aa_NumberOfPotlinesToBeShutdownAndDemolished" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfReportingUnits" id="aa_NumberOfReportingUnits" type="xbrli:positiveIntegerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfReportingUnitsBeingSubjectedToGoodwillImpairmentTest" id="aa_NumberOfReportingUnitsBeingSubjectedToGoodwillImpairmentTest" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfSmeltersWhereCurtailmentIsPlannedToBeTemporary" id="aa_NumberOfSmeltersWhereCurtailmentIsPlannedToBeTemporary" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfStructuresRequiredToDemolish" id="aa_NumberOfStructuresRequiredToDemolish" type="xbrli:decimalItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfUSLocationsPermanentlyShutdownAndPlannedDemolition" id="aa_NumberOfUSLocationsPermanentlyShutdownAndPlannedDemolition" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfWhollyOwnedSubsidiaries" id="aa_NumberOfWhollyOwnedSubsidiaries" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfYearsOfSalesAndProfitabilityTargetsToAscertainGrantOfPerformanceStockAwards" id="aa_NumberOfYearsOfSalesAndProfitabilityTargetsToAscertainGrantOfPerformanceStockAwards" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfYearsOperatingUnderPowerSupplyStructured" id="aa_NumberOfYearsOperatingUnderPowerSupplyStructured" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberRevolvingCreditFacilityAgreements" id="aa_NumberRevolvingCreditFacilityAgreements" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OperatingSuppliesMember" id="aa_OperatingSuppliesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OptionFullyVestedAndExercisableFirstRangeOfExercisePriceMember" id="aa_OptionFullyVestedAndExercisableFirstRangeOfExercisePriceMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OptionFullyVestedAndExercisableFourthRangeOfExercisePriceMember" id="aa_OptionFullyVestedAndExercisableFourthRangeOfExercisePriceMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OptionFullyVestedAndExercisableSecondRangeOfExercisePriceMember" id="aa_OptionFullyVestedAndExercisableSecondRangeOfExercisePriceMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OptionFullyVestedAndExercisableThirdRangeOfExercisePriceMember" id="aa_OptionFullyVestedAndExercisableThirdRangeOfExercisePriceMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OptionToRedeemNotesPeriodPriorToNoticeToHolders" id="aa_OptionToRedeemNotesPeriodPriorToNoticeToHolders" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherAssetImpairmentsMember" id="aa_OtherAssetImpairmentsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherAssetRetirementObligation" id="aa_OtherAssetRetirementObligation" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherComprehensiveIncomeDefinedBenefitPlanAmountsAttributedToJointVenturePartners" id="aa_OtherComprehensiveIncomeDefinedBenefitPlanAmountsAttributedToJointVenturePartners" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherComprehensiveIncomeDefinedBenefitPlanNetAmountRecognizedBeforeTaxEffect" id="aa_OtherComprehensiveIncomeDefinedBenefitPlanNetAmountRecognizedBeforeTaxEffect" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherComprehensiveIncomeDefinedBenefitPlansAmortizationOfAccumulatedNetActuarialLoss" id="aa_OtherComprehensiveIncomeDefinedBenefitPlansAmortizationOfAccumulatedNetActuarialLoss" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherCostsRelatedToRestructuring" id="aa_OtherCostsRelatedToRestructuring" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherCurrentLiabilitiesMember" id="aa_OtherCurrentLiabilitiesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherDeferredTaxAssetsMember" id="aa_OtherDeferredTaxAssetsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherDerivativeContractsEstimatedTermOfQuotedMarketPricesInYears" id="aa_OtherDerivativeContractsEstimatedTermOfQuotedMarketPricesInYears" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherExitCostsAfterTaxAndNoncontrollingInterests" id="aa_OtherExitCostsAfterTaxAndNoncontrollingInterests" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherExitCostsMember" id="aa_OtherExitCostsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherExtrudedAluminumAndForgedProductsMember" id="aa_OtherExtrudedAluminumAndForgedProductsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherFundsMember" id="aa_OtherFundsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherGeographicalRegionsMember" id="aa_OtherGeographicalRegionsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherGroupMember" id="aa_OtherGroupMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherIncomeExpensesNetMember" id="aa_OtherIncomeExpensesNetMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherIntangibleAssetsTextBlock" id="aa_OtherIntangibleAssetsTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherIntangibleMember" id="aa_OtherIntangibleMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherLiabilitiesAndDeferredCreditsLineItems" id="aa_OtherLiabilitiesAndDeferredCreditsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherLiabilitiesAndDeferredCreditsTable" id="aa_OtherLiabilitiesAndDeferredCreditsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="OtherLongTermDebtMember" id="aa_OtherLongTermDebtMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherMiscellaneousChargesMember" id="aa_OtherMiscellaneousChargesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherNoncurrentAssetsLineItems" id="aa_OtherNoncurrentAssetsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherNoncurrentAssetsMember" id="aa_OtherNoncurrentAssetsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherNoncurrentAssetsTable" id="aa_OtherNoncurrentAssetsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="OtherNoncurrentLiabilitiesAndDeferredCreditsMember" id="aa_OtherNoncurrentLiabilitiesAndDeferredCreditsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherPolicyTextBlock" id="aa_OtherPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherPropertyPlantAndEquipmentMember" id="aa_OtherPropertyPlantAndEquipmentMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherReceivablesMember" id="aa_OtherReceivablesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherRestructuringActivitiesAfterTaxAndNoncontrollingInterests" id="aa_OtherRestructuringActivitiesAfterTaxAndNoncontrollingInterests" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherSitesMember" id="aa_OtherSitesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OutstandingBorrowings" id="aa_OutstandingBorrowings" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OutstandingForwardContractsEnteredIntoAsHedgeForecastedTransactionsForeignExchangeContracts" id="aa_OutstandingForwardContractsEnteredIntoAsHedgeForecastedTransactionsForeignExchangeContracts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="Outstandingforwardcontractsenteredintoashedgeforecastedtransactionsmeasuredinbritishthermalunits" id="aa_Outstandingforwardcontractsenteredintoashedgeforecastedtransactionsmeasuredinbritishthermalunits" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OutstandingForwardContractsEnteredIntoAsHedgeForecastedTransactionsMeasuredInMegaWattHours" id="aa_OutstandingForwardContractsEnteredIntoAsHedgeForecastedTransactionsMeasuredInMegaWattHours" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OutstandingForwardContractsEnteredIntoAsHedgingForecastedTransactionsMeasuredInKiloMetricTon" id="aa_OutstandingForwardContractsEnteredIntoAsHedgingForecastedTransactionsMeasuredInKiloMetricTon" type="xbrli:decimalItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OutstandingReceivableForLaborAndOtherEmployeeRelatedExpenses" id="aa_OutstandingReceivableForLaborAndOtherEmployeeRelatedExpenses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OutstandingStockMember" id="aa_OutstandingStockMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OwnershipInterestInJointVenture" id="aa_OwnershipInterestInJointVenture" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OwnershipInterestInJointVentureAtFairMarketValue" id="aa_OwnershipInterestInJointVentureAtFairMarketValue" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ParticipatingNonvestedSharesWithNonForfeitableDividendRights" id="aa_ParticipatingNonvestedSharesWithNonForfeitableDividendRights" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PatentLicenseAgreementMember" id="aa_PatentLicenseAgreementMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PaymentForLitigationSettlementInstallmentAmount" id="aa_PaymentForLitigationSettlementInstallmentAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PaymentForProRataShareOfPreIncorporationCosts" id="aa_PaymentForProRataShareOfPreIncorporationCosts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PaymentsForAcquisitionsNetOfCashAcquired" id="aa_PaymentsForAcquisitionsNetOfCashAcquired" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PechineyReynoldsQuebecIncMember" id="aa_PechineyReynoldsQuebecIncMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PensionAndOtherPostretirementBenefitPlansAssetsMember" id="aa_PensionAndOtherPostretirementBenefitPlansAssetsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PensionBenefitsMember" id="aa_PensionBenefitsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfCostOfGoodsSold" id="aa_PercentageOfCostOfGoodsSold" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfCurrentPowerSelfSufficiency" id="aa_PercentageOfCurrentPowerSelfSufficiency" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfDeferredTaxAssetExclusiveOfReversingTemporaryDifferences" id="aa_PercentageOfDeferredTaxAssetExclusiveOfReversingTemporaryDifferences" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfEffectOfUnrecognizedTaxBenefitIfRecorded" id="aa_PercentageOfEffectOfUnrecognizedTaxBenefitIfRecorded" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfFundedStatusOfPensionPlans" id="aa_PercentageOfFundedStatusOfPensionPlans" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfPrincipalAmountOfRedeemableDebtUnderTerm" id="aa_PercentageOfPrincipalAmountOfRedeemableDebtUnderTerm" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfTemporaryTaxDifferencesThatReverseWithinCarryforwardPeriod" id="aa_PercentageOfTemporaryTaxDifferencesThatReverseWithinCarryforwardPeriod" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfTemporaryTaxDifferencesThatReverseWithinTaxPlanningStrategies" id="aa_PercentageOfTemporaryTaxDifferencesThatReverseWithinTaxPlanningStrategies" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfTotalGoodwillAllocatedToReportingUnits" id="aa_PercentageOfTotalGoodwillAllocatedToReportingUnits" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PeriodOfAllegedConspiracyYears" id="aa_PeriodOfAllegedConspiracyYears" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PeriodOfMovingAveragesUsedForHistoricalDataPointsUsedToDetermineExpectedLongTermRateOfReturnOnPlanAssets" id="aa_PeriodOfMovingAveragesUsedForHistoricalDataPointsUsedToDetermineExpectedLongTermRateOfReturnOnPlanAssets" type="xbrli:positiveIntegerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PeriodOfTimeBetweenPotentialPhenomenonOccurrences" id="aa_PeriodOfTimeBetweenPotentialPhenomenonOccurrences" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PlanAssetsMember" id="aa_PlanAssetsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PortovesmeItalyMember" id="aa_PortovesmeItalyMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PortovesmeSiteMember" id="aa_PortovesmeSiteMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PortovesmeSmelterMember" id="aa_PortovesmeSmelterMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PotentialForfeitureOfLetterOfCredit" id="aa_PotentialForfeitureOfLetterOfCredit" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PowerContractOneMember" id="aa_PowerContractOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PowerContractTwoMember" id="aa_PowerContractTwoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PowerGenerationMember" id="aa_PowerGenerationMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PrepaidExpenseAndOtherCurrentAssetsMember" id="aa_PrepaidExpenseAndOtherCurrentAssetsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PrepaidGasTransmissionContract" id="aa_PrepaidGasTransmissionContract" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PriceOfAluminumBeyondForwardCurveMember" id="aa_PriceOfAluminumBeyondForwardCurveMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PriceOfElectricityBeyondForwardCurveMember" id="aa_PriceOfElectricityBeyondForwardCurveMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PriceOfElectricityThroughForwardCurve" id="aa_PriceOfElectricityThroughForwardCurve" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PrimaryAluminumMember" id="aa_PrimaryAluminumMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PrimaryAluminumSmelterMember" id="aa_PrimaryAluminumSmelterMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PrimaryMetalsMember" id="aa_PrimaryMetalsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PrimaryMetalsSegmentMember" id="aa_PrimaryMetalsSegmentMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PrincipalAndInterest" id="aa_PrincipalAndInterest" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ProjectedCapacityAmountOfProcessedBauxiteInKmt" id="aa_ProjectedCapacityAmountOfProcessedBauxiteInKmt" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ProjectFinancingCommitment" id="aa_ProjectFinancingCommitment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PropertiesPlantsAndEquipmentExcludingConstructionWorkInProgress" id="aa_PropertiesPlantsAndEquipmentExcludingConstructionWorkInProgress" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PropertyDamagesMember" id="aa_PropertyDamagesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PunitiveDamagesMember" id="aa_PunitiveDamagesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReceivablesFromCustomersMember" id="aa_ReceivablesFromCustomersMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RecentlyAdoptedAccountingGuidanceGoodwillAndOtherIntangibleAssetsPolicyTextBlock" id="aa_RecentlyAdoptedAccountingGuidanceGoodwillAndOtherIntangibleAssetsPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RecentlyIssuedAccountingGuidancePolicyTextBlock" id="aa_RecentlyIssuedAccountingGuidancePolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RecognitionOfIncomeCausedByPartialLiquidationsOfLowerCostLifoInventoryBaseGross" id="aa_RecognitionOfIncomeCausedByPartialLiquidationsOfLowerCostLifoInventoryBaseGross" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RecognitionOfIncomeCausedByPartialLiquidationsOfLowerCostLifoInventoryBaseNet" id="aa_RecognitionOfIncomeCausedByPartialLiquidationsOfLowerCostLifoInventoryBaseNet" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReconciliationOfActivityForDerivativeContractsOnNetBasisTextBlock" id="aa_ReconciliationOfActivityForDerivativeContractsOnNetBasisTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReconciliationOfEffectiveIncomeTaxRateTable" id="aa_ReconciliationOfEffectiveIncomeTaxRateTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ReconciliationOfUnrecognizedTaxBenefitsLineItems" id="aa_ReconciliationOfUnrecognizedTaxBenefitsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReconciliationOfUnrecognizedTaxBenefitsTable" id="aa_ReconciliationOfUnrecognizedTaxBenefitsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="RecurringCostsOfManagingHazardousSubstancesAndEnvironmentalProgramsMember" id="aa_RecurringCostsOfManagingHazardousSubstancesAndEnvironmentalProgramsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RedemptionOfConvertibleSecuritiesOfSubsidiary" id="aa_RedemptionOfConvertibleSecuritiesOfSubsidiary" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReductionInProductionDueToMarketCondition" id="aa_ReductionInProductionDueToMarketCondition" type="xbrli:decimalItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReductionOfProductionPlanIncludedInAssetImpairment" id="aa_ReductionOfProductionPlanIncludedInAssetImpairment" type="xbrli:decimalItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RefiningAndMiningCompanyMember" id="aa_RefiningAndMiningCompanyMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RefiningFacilitiesMember" id="aa_RefiningFacilitiesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RelatedPartyTransactionsPolicyTextBlock" id="aa_RelatedPartyTransactionsPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RemainingCapacityMember" id="aa_RemainingCapacityMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RepaymentOfTermLoans" id="aa_RepaymentOfTermLoans" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RepaymentsMadeUnderAgreementsAssets" id="aa_RepaymentsMadeUnderAgreementsAssets" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RequiredEquityContributions" id="aa_RequiredEquityContributions" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RestrictedCashMember" id="aa_RestrictedCashMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RestructuringAndOtherChargesAfterTaxAndNoncontrollingInterests" id="aa_RestructuringAndOtherChargesAfterTaxAndNoncontrollingInterests" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RestructuringChargeForLayoffs" id="aa_RestructuringChargeForLayoffs" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RestructuringProgramsLayoffs2010Member" id="aa_RestructuringProgramsLayoffs2010Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RestructuringProgramsLayoffs2011Member" id="aa_RestructuringProgramsLayoffs2011Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RestructuringProgramsLayoffs2012Member" id="aa_RestructuringProgramsLayoffs2012Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RestructuringReserveOtherAdjustment" id="aa_RestructuringReserveOtherAdjustment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RestructuringReserveOtherAdjustmentAfterTaxExpense" id="aa_RestructuringReserveOtherAdjustmentAfterTaxExpense" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RestructuringReservePeriodExpenses" id="aa_RestructuringReservePeriodExpenses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RetiredFormerEmployeesInvolvedInClassAction" id="aa_RetiredFormerEmployeesInvolvedInClassAction" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RevenuePercentageFromPrimaryOperatingSegment" id="aa_RevenuePercentageFromPrimaryOperatingSegment" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReversalsOfPreviouslyRecordedLayoffAndOtherExitCosts" id="aa_ReversalsOfPreviouslyRecordedLayoffAndOtherExitCosts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RevolvingCreditAgreementMember" id="aa_RevolvingCreditAgreementMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RockdaleTxMember" id="aa_RockdaleTxMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RollingMillMember" id="aa_RollingMillMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RussiaMember" id="aa_RussiaMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SaleOfCustomerReceivables" id="aa_SaleOfCustomerReceivables" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SalesGeneratedPriorYearBeforeAcquision" id="aa_SalesGeneratedPriorYearBeforeAcquision" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SalesPercentage" id="aa_SalesPercentage" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SaudiArabiaJointVentureMember" id="aa_SaudiArabiaJointVentureMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScenarioOneMember" id="aa_ScenarioOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScenarioTwoMember" id="aa_ScenarioTwoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfAssetsBySegmentLineItems" id="aa_ScheduleOfAssetsBySegmentLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfAssetsBySegmentTable" id="aa_ScheduleOfAssetsBySegmentTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ScheduleOfCarryingValuesAndFairValuesOfOtherFinancialInstrumentsTableTextBlock" id="aa_ScheduleOfCarryingValuesAndFairValuesOfOtherFinancialInstrumentsTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfCashPaidForAcquisitionsTableTextBlock" id="aa_ScheduleOfCashPaidForAcquisitionsTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfCommonStockLineItems" id="aa_ScheduleOfCommonStockLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfCommonStockTable" id="aa_ScheduleOfCommonStockTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ScheduleOfComponentsOfNetPeriodicBenefitCostTextBlock" id="aa_ScheduleOfComponentsOfNetPeriodicBenefitCostTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfDerivativeContractAssetsAndLiabilitiesThatAreMeasuredAndRecognizedAtFairValueOnRecurringBasisTableTextBlock" id="aa_ScheduleOfDerivativeContractAssetsAndLiabilitiesThatAreMeasuredAndRecognizedAtFairValueOnRecurringBasisTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfDiscontinuedOperationsTable" id="aa_ScheduleOfDiscontinuedOperationsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassTable" id="aa_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassTableTextBlock" id="aa_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfExpirationPeriodsOfDeferredTaxAssetsTextBlock" id="aa_ScheduleOfExpirationPeriodsOfDeferredTaxAssetsTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfFairValueOfPensionAndPostretirementPlanAssetsTableTextBlock" id="aa_ScheduleOfFairValueOfPensionAndPostretirementPlanAssetsTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfInterestCostComponentsTextBlock" id="aa_ScheduleOfInterestCostComponentsTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfInventoryComponentsDisclosuresTableTextBlock" id="aa_ScheduleOfInventoryComponentsDisclosuresTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfInventoryTable" id="aa_ScheduleOfInventoryTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ScheduleOfInvestmentsTableTextBlock" id="aa_ScheduleOfInvestmentsTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfMajorClassesOfAssetsAndLiabilitiesOfOperationsHeldForSaleTextBlock" id="aa_ScheduleOfMajorClassesOfAssetsAndLiabilitiesOfOperationsHeldForSaleTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfNoncontrollingShareholdersInterestsTextBlock" id="aa_ScheduleOfNoncontrollingShareholdersInterestsTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfOtherNoncurrentLiabilitiesAndDeferredCreditsTableTextBlock" id="aa_ScheduleOfOtherNoncurrentLiabilitiesAndDeferredCreditsTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfOutstandingForwardContractsThatWereEnteredIntoHedgeForecastedTransactionsTableTextBlock" id="aa_ScheduleOfOutstandingForwardContractsThatWereEnteredIntoHedgeForecastedTransactionsTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfProFormaRestructuringChargesByReportableSegmentBeforeIncomeTaxTextBlock" id="aa_ScheduleOfProFormaRestructuringChargesByReportableSegmentBeforeIncomeTaxTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfQuantitativeInformationForLevelThreeDerivativeContractsTableTextBlock" id="aa_ScheduleOfQuantitativeInformationForLevelThreeDerivativeContractsTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfQuarterlyFinancialInformationLineItems" id="aa_ScheduleOfQuarterlyFinancialInformationLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfQuarterlyFinancialInformationTable" id="aa_ScheduleOfQuarterlyFinancialInformationTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ScheduleOfSegmentReportingInformationToConsolidateNetIncomeLossAttributableToParentTextBlock" id="aa_ScheduleOfSegmentReportingInformationToConsolidateNetIncomeLossAttributableToParentTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfSharesActivityTableTextBlock" id="aa_ScheduleOfSharesActivityTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfStockOptionActivityLineItems" id="aa_ScheduleOfStockOptionActivityLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfStockOptionActivityTable" id="aa_ScheduleOfStockOptionActivityTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ScheduleOfStockOptionsLineItems" id="aa_ScheduleOfStockOptionsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfStockOptionsTable" id="aa_ScheduleOfStockOptionsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ScheduleOfSummaryOfAcquisitionsOfPropertiesLineItems" id="aa_ScheduleOfSummaryOfAcquisitionsOfPropertiesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfSummaryOfAcquisitionsOfPropertiesTable" id="aa_ScheduleOfSummaryOfAcquisitionsOfPropertiesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ScheduleOfWeightedAverageUsefulLivesOfStructuresAndMachineryAndEquipmentTextBlock" id="aa_ScheduleOfWeightedAverageUsefulLivesOfStructuresAndMachineryAndEquipmentTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScrgBrownfieldRecoveryCorpEnergyAnswersCorporationOfPuertoRicoMember" id="aa_ScrgBrownfieldRecoveryCorpEnergyAnswersCorporationOfPuertoRicoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SecondLoanAgreementMember" id="aa_SecondLoanAgreementMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentInformationMember" id="aa_SegmentInformationMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationCorporateExpenses" id="aa_SegmentReportingInformationCorporateExpenses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationCorporateSales" id="aa_SegmentReportingInformationCorporateSales" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationDepreciationDepletionAndAmortizationExpenseTotal" id="aa_SegmentReportingInformationDepreciationDepletionAndAmortizationExpenseTotal" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationEliminationOfIntersegmentReceivables" id="aa_SegmentReportingInformationEliminationOfIntersegmentReceivables" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationEquityInNetIncomeOfEquityMethodInvesteesOfSegmentTotal" id="aa_SegmentReportingInformationEquityInNetIncomeOfEquityMethodInvesteesOfSegmentTotal" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationImpactOfLastInFirstOut" id="aa_SegmentReportingInformationImpactOfLastInFirstOut" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationIncomeTaxExpenseBenefitTotal" id="aa_SegmentReportingInformationIncomeTaxExpenseBenefitTotal" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationIntersegmentRevenueTotal" id="aa_SegmentReportingInformationIntersegmentRevenueTotal" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationOtherIncomeExpenseNet" id="aa_SegmentReportingInformationOtherIncomeExpenseNet" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationProfitLossTotal" id="aa_SegmentReportingInformationProfitLossTotal" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationRestructuringAndOtherCharges" id="aa_SegmentReportingInformationRestructuringAndOtherCharges" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationRevenueFromExternalCustomersTotal" id="aa_SegmentReportingInformationRevenueFromExternalCustomersTotal" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationRevenueTotal" id="aa_SegmentReportingInformationRevenueTotal" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingReconcilingItemsGoodwillAssets" id="aa_SegmentReportingReconcilingItemsGoodwillAssets" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentTotalMember" id="aa_SegmentTotalMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SerradoFacaoAndEstreitoMember" id="aa_SerradoFacaoAndEstreitoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SerraDoFacaoProjectMember" id="aa_SerraDoFacaoProjectMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriods" id="aa_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriods" type="us-types:durationStringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceShareAdjustment" id="aa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceShareAdjustment" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAnnualForfeitureRate" id="aa_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAnnualForfeitureRate" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExerciseBehavior" id="aa_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExerciseBehavior" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationUnrecognizedCompensationExpenseExpectedToBeRecognizedInYearOne" id="aa_ShareBasedCompensationUnrecognizedCompensationExpenseExpectedToBeRecognizedInYearOne" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationUnrecognizedCompensationExpenseExpectedToBeRecognizedInYearThree" id="aa_ShareBasedCompensationUnrecognizedCompensationExpenseExpectedToBeRecognizedInYearThree" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationUnrecognizedCompensationExpenseExpectedToBeRecognizedInYearTwo" id="aa_ShareBasedCompensationUnrecognizedCompensationExpenseExpectedToBeRecognizedInYearTwo" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationUnrecognizedCompensationExpenseExpectedToBeRecognizedTotal" id="aa_ShareBasedCompensationUnrecognizedCompensationExpenseExpectedToBeRecognizedTotal" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SharesThatWouldHaveBeenIncludedInDilutedEarningsPerShareCalculation" id="aa_SharesThatWouldHaveBeenIncludedInDilutedEarningsPerShareCalculation" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SherwinTXMember" id="aa_SherwinTXMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SixPercentNotesDueTwoThousandThirteenMember" id="aa_SixPercentNotesDueTwoThousandThirteenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SixPercentNotesDueTwoThousandTwelveMember" id="aa_SixPercentNotesDueTwoThousandTwelveMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SixPointFivePercentBondsDueTwoThousandEighteenMember" id="aa_SixPointFivePercentBondsDueTwoThousandEighteenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SixPointOneFivePercentNotesDueTwoThousandTwentyMember" id="aa_SixPointOneFivePercentNotesDueTwoThousandTwentyMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SixPointSevenFivePercentBondsDueTwoThousandTwentyEightMember" id="aa_SixPointSevenFivePercentBondsDueTwoThousandTwentyEightMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SixPointSevenFivePercentNotesDueTwoThousandEighteenMember" id="aa_SixPointSevenFivePercentNotesDueTwoThousandEighteenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SixthLoanAgreementMember" id="aa_SixthLoanAgreementMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SixYearNaturalGasSupplyContractMember" id="aa_SixYearNaturalGasSupplyContractMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SmallLayoffReservesRelatedToPriorPeriodsMember" id="aa_SmallLayoffReservesRelatedToPriorPeriodsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SmelterCurtailmentsMember" id="aa_SmelterCurtailmentsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SmelterOperationMember" id="aa_SmelterOperationMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SmeltingAndRollingMillCompaniesMember" id="aa_SmeltingAndRollingMillCompaniesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SmeltingAssetsMember" id="aa_SmeltingAssetsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SpainMember" id="aa_SpainMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SpanishGovernmentMember" id="aa_SpanishGovernmentMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SpentPotLiningDisposal" id="aa_SpentPotLiningDisposal" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockAndPerformanceAwardsMember" id="aa_StockAndPerformanceAwardsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockAwardsMember" id="aa_StockAwardsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockIssuedDuringPeriodNewIssues" id="aa_StockIssuedDuringPeriodNewIssues" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockIssuedDuringPeriodPrivatePlacement" id="aa_StockIssuedDuringPeriodPrivatePlacement" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockIssuedDuringPeriodSharesPeriodParValue" id="aa_StockIssuedDuringPeriodSharesPeriodParValue" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockIssuedDuringPeriodValue" id="aa_StockIssuedDuringPeriodValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StructuresMember" id="aa_StructuresMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SubloanOfFifteenDollarMember" id="aa_SubloanOfFifteenDollarMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SubloanOfThirtyFiveDollarMember" id="aa_SubloanOfThirtyFiveDollarMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SubloanOfThreeHundredAndThirtyNineDollarMember" id="aa_SubloanOfThreeHundredAndThirtyNineDollarMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SubloanOfTwoHundredAndThirtyThreeDollarMember" id="aa_SubloanOfTwoHundredAndThirtyThreeDollarMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SummaryOfSignificantAccountingPoliciesLineItems" id="aa_SummaryOfSignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SummaryOfSignificantAccountingPoliciesTable" id="aa_SummaryOfSignificantAccountingPoliciesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="SupplementalCashFlowInformationLineItems" id="aa_SupplementalCashFlowInformationLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SupplementalCashFlowInformationTable" id="aa_SupplementalCashFlowInformationTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="SuretyBondsExpirationDate" id="aa_SuretyBondsExpirationDate" type="us-types:dateStringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TapocoHydroelectricProjectMember" id="aa_TapocoHydroelectricProjectMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TariffsGrantedBySpainMember" id="aa_TariffsGrantedBySpainMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TenYearMovingAverageMember" id="aa_TenYearMovingAverageMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TenYearMovingAverageOfActualPerformance" id="aa_TenYearMovingAverageOfActualPerformance" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TermOfLaborAgreement" id="aa_TermOfLaborAgreement" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ThirdLoanAgreementMember" id="aa_ThirdLoanAgreementMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ThirdSubloanMember" id="aa_ThirdSubloanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ThreeHundredFiftyOneMegawattTapocoHydroelectricProjectMember" id="aa_ThreeHundredFiftyOneMegawattTapocoHydroelectricProjectMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ThreeOfSubloansMember" id="aa_ThreeOfSubloansMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ThreeYearEquityCallPlanMember" id="aa_ThreeYearEquityCallPlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TotalCostsAndExpenses" id="aa_TotalCostsAndExpenses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TotalEnergyDemand" id="aa_TotalEnergyDemand" type="num:powerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TotalInvestmentInProject" id="aa_TotalInvestmentInProject" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TotalSegmentAfterTaxOperatingIncome" id="aa_TotalSegmentAfterTaxOperatingIncome" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TotalShareOfProject" id="aa_TotalShareOfProject" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TracoMember" id="aa_TracoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TransdigmGroupIncMember" id="aa_TransdigmGroupIncMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TransportationProductsEuropeMember" id="aa_TransportationProductsEuropeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TrialLengthNumberOfDays" id="aa_TrialLengthNumberOfDays" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TwentyYearMovingAverageActualPerformance" id="aa_TwentyYearMovingAverageActualPerformance" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TwentyYearMovingAverageMember" id="aa_TwentyYearMovingAverageMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TwoOfSubloansMember" id="aa_TwoOfSubloansMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TwoTermLoanAgreementsMember" id="aa_TwoTermLoanAgreementsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TwoThousandThreeMember" id="aa_TwoThousandThreeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UnamortizedTaxDeductibleGoodwillResultingFromIntercompanyStockSalesAndReorganizations" id="aa_UnamortizedTaxDeductibleGoodwillResultingFromIntercompanyStockSalesAndReorganizations" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UnitedKingdomMember" id="aa_UnitedKingdomMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UnitedSteelworkersLaborAgreementMember" id="aa_UnitedSteelworkersLaborAgreementMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UnrecognizedStockBasedCompensationExpenseTable" id="aa_UnrecognizedStockBasedCompensationExpenseTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="UnrecognizedTaxBenefitsForeignCurrencyTranslation" id="aa_UnrecognizedTaxBenefitsForeignCurrencyTranslation" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="USSmeltersMember" id="aa_USSmeltersMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WarrickInMember" id="aa_WarrickInMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WeightedAverageExercisePriceOfUnderwaterOptions" id="aa_WeightedAverageExercisePriceOfUnderwaterOptions" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WeightedAverageInterestRateOutstandingBorrowings" id="aa_WeightedAverageInterestRateOutstandingBorrowings" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WeightedAverageMarginOnLongTermDebt" id="aa_WeightedAverageMarginOnLongTermDebt" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WeightedAverageUsefulLivesOfSoftwareAndOtherIntangibleAssetsByReportingSegmentTextBlock" id="aa_WeightedAverageUsefulLivesOfSoftwareAndOtherIntangibleAssetsByReportingSegmentTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WireHarnessAndElectricalPortionOfEesBusinessMember" id="aa_WireHarnessAndElectricalPortionOfEesBusinessMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WriteOffOfNetCarryingValueOfOtherIdledSmeltingAssets" id="aa_WriteOffOfNetCarryingValueOfOtherIdledSmeltingAssets" type="num:massItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WriteOffOfReceivable" id="aa_WriteOffOfReceivable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
</schema>
