20-F 1 mt-20221231.htm 20-F mt-20221231
00012434292022FYFALSEnonoP3YP3YP3YP3YP3YP3YP3YP3YP1YP3YP3YP3YP2Y1.57140.200.100.066600012434292022-01-012022-12-310001243429dei:BusinessContactMember2022-01-012022-12-310001243429exch:XNYS2022-01-012022-12-310001243429exch:XNYSmt:A55MandatorilyConvertibleSubordinatedNotesDue2023Member2022-01-012022-12-3100012434292022-12-31xbrli:shares00012434292021-01-012021-12-31iso4217:USD00012434292020-01-012020-12-31iso4217:USDxbrli:shares00012434292021-12-310001243429ifrs-full:IssuedCapitalMember2019-12-310001243429ifrs-full:TreasurySharesMember2019-12-310001243429ifrs-full:ReserveOfEquityComponentOfConvertibleInstrumentsMember2019-12-310001243429ifrs-full:AdditionalPaidinCapitalMember2019-12-310001243429ifrs-full:RetainedEarningsMember2019-12-310001243429ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember2019-12-310001243429ifrs-full:ReserveOfCashFlowHedgesMember2019-12-310001243429ifrs-full:ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember2019-12-310001243429ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlansMember2019-12-310001243429ifrs-full:EquityAttributableToOwnersOfParentMember2019-12-310001243429ifrs-full:NoncontrollingInterestsMember2019-12-3100012434292019-12-310001243429ifrs-full:RetainedEarningsMember2020-01-012020-12-310001243429ifrs-full:EquityAttributableToOwnersOfParentMember2020-01-012020-12-310001243429ifrs-full:NoncontrollingInterestsMember2020-01-012020-12-310001243429ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember2020-01-012020-12-310001243429ifrs-full:ReserveOfCashFlowHedgesMember2020-01-012020-12-310001243429ifrs-full:ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember2020-01-012020-12-310001243429ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlansMember2020-01-012020-12-310001243429ifrs-full:IssuedCapitalMember2020-01-012020-12-310001243429ifrs-full:TreasurySharesMember2020-01-012020-12-310001243429ifrs-full:AdditionalPaidinCapitalMember2020-01-012020-12-310001243429ifrs-full:ReserveOfEquityComponentOfConvertibleInstrumentsMember2020-01-012020-12-310001243429ifrs-full:IssuedCapitalMember2020-12-310001243429ifrs-full:TreasurySharesMember2020-12-310001243429ifrs-full:ReserveOfEquityComponentOfConvertibleInstrumentsMember2020-12-310001243429ifrs-full:AdditionalPaidinCapitalMember2020-12-310001243429ifrs-full:RetainedEarningsMember2020-12-310001243429ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember2020-12-310001243429ifrs-full:ReserveOfCashFlowHedgesMember2020-12-310001243429ifrs-full:ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember2020-12-310001243429ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlansMember2020-12-310001243429ifrs-full:EquityAttributableToOwnersOfParentMember2020-12-310001243429ifrs-full:NoncontrollingInterestsMember2020-12-3100012434292020-12-310001243429ifrs-full:RetainedEarningsMember2021-01-012021-12-310001243429ifrs-full:EquityAttributableToOwnersOfParentMember2021-01-012021-12-310001243429ifrs-full:NoncontrollingInterestsMember2021-01-012021-12-310001243429ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember2021-01-012021-12-310001243429ifrs-full:ReserveOfCashFlowHedgesMember2021-01-012021-12-310001243429ifrs-full:ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember2021-01-012021-12-310001243429ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlansMember2021-01-012021-12-310001243429ifrs-full:IssuedCapitalMember2021-01-012021-12-310001243429ifrs-full:TreasurySharesMember2021-01-012021-12-310001243429ifrs-full:AdditionalPaidinCapitalMember2021-01-012021-12-310001243429ifrs-full:ReserveOfEquityComponentOfConvertibleInstrumentsMember2021-01-012021-12-310001243429ifrs-full:IssuedCapitalMember2021-12-310001243429ifrs-full:TreasurySharesMember2021-12-310001243429ifrs-full:ReserveOfEquityComponentOfConvertibleInstrumentsMember2021-12-310001243429ifrs-full:AdditionalPaidinCapitalMember2021-12-310001243429ifrs-full:RetainedEarningsMember2021-12-310001243429ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember2021-12-310001243429ifrs-full:ReserveOfCashFlowHedgesMember2021-12-310001243429ifrs-full:ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember2021-12-310001243429ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlansMember2021-12-310001243429ifrs-full:EquityAttributableToOwnersOfParentMember2021-12-310001243429ifrs-full:NoncontrollingInterestsMember2021-12-310001243429ifrs-full:RetainedEarningsMember2022-01-012022-12-310001243429ifrs-full:EquityAttributableToOwnersOfParentMember2022-01-012022-12-310001243429ifrs-full:NoncontrollingInterestsMember2022-01-012022-12-310001243429ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember2022-01-012022-12-310001243429ifrs-full:ReserveOfCashFlowHedgesMember2022-01-012022-12-310001243429ifrs-full:ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember2022-01-012022-12-310001243429ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlansMember2022-01-012022-12-310001243429ifrs-full:IssuedCapitalMember2022-01-012022-12-310001243429ifrs-full:TreasurySharesMember2022-01-012022-12-310001243429ifrs-full:AdditionalPaidinCapitalMember2022-01-012022-12-310001243429ifrs-full:IssuedCapitalMember2022-12-310001243429ifrs-full:TreasurySharesMember2022-12-310001243429ifrs-full:ReserveOfEquityComponentOfConvertibleInstrumentsMember2022-12-310001243429ifrs-full:AdditionalPaidinCapitalMember2022-12-310001243429ifrs-full:RetainedEarningsMember2022-12-310001243429ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember2022-12-310001243429ifrs-full:ReserveOfCashFlowHedgesMember2022-12-310001243429ifrs-full:ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember2022-12-310001243429ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlansMember2022-12-310001243429ifrs-full:EquityAttributableToOwnersOfParentMember2022-12-310001243429ifrs-full:NoncontrollingInterestsMember2022-12-310001243429mt:MandatorilyConvertibleUnsecuredUnsubordinatedBondsMember2011-09-270001243429mt:GlobalMember2022-01-012022-12-31xbrli:pure0001243429srt:EuropeMember2022-01-012022-12-310001243429srt:ScenarioForecastMember2023-02-17iso4217:EUR0001243429country:UA2022-01-012022-12-31mt:tonne0001243429country:UA2021-01-012021-12-310001243429country:UA2022-12-310001243429country:UA2021-12-31mt:shipment0001243429country:UAmt:KryvyiRihSteelPlantMember2022-01-012022-12-310001243429country:UAmt:KryvyiRihSteelPlantMember2021-01-012021-12-310001243429country:UA2022-04-11mt:blastFurnace0001243429country:UA2022-04-112022-04-110001243429country:UA2022-01-012022-06-300001243429country:UA2022-10-012022-10-310001243429country:UAifrs-full:PropertyPlantAndEquipmentMember2022-01-012022-12-310001243429mt:NAFTAMembermt:ArcelorMittalDofascoG.P.Member2022-01-012022-12-310001243429mt:NAFTAMembermt:ArcelorMittalMexicoS.A.deC.V.Member2022-01-012022-12-310001243429mt:ArcelorMittalLongProductsCanadaG.P.Membermt:NAFTAMember2022-01-012022-12-310001243429mt:NAFTAMembermt:ArcelorMittalTexasHBILLCMember2022-01-012022-12-310001243429mt:BrazilSegmentMembermt:ArcelorMittalBrasilS.A.Member2022-01-012022-12-310001243429mt:AcindarIndustriaArgentinadeAcerosS.A.Membermt:BrazilSegmentMember2022-01-012022-12-310001243429mt:ArcelorMittalFranceS.A.S.Membermt:EuropeSegmentMember2022-01-012022-12-310001243429mt:ArcelorMittalBelgiumN.V.Membermt:EuropeSegmentMember2022-01-012022-12-310001243429mt:ArcelorMittalEspaaS.A.Membermt:EuropeSegmentMember2022-01-012022-12-310001243429mt:ArcelorMittalFlatCarbonEuropeS.A.Membermt:EuropeSegmentMember2022-01-012022-12-310001243429mt:EuropeSegmentMembermt:ArcelorMittalPolandS.A.Member2022-01-012022-12-310001243429mt:EuropeSegmentMembermt:ArcelorMittalEisenhttenstadtGmbHMember2022-01-012022-12-310001243429mt:ArcelorMittalBremenGmbHMembermt:EuropeSegmentMember2022-01-012022-12-310001243429mt:ArcelorMittalMediterraneS.A.S.Membermt:EuropeSegmentMember2022-01-012022-12-310001243429mt:ArcelorMittalBelvalDifferdangeS.A.Membermt:EuropeSegmentMember2022-01-012022-12-310001243429mt:EuropeSegmentMembermt:ArcelorMittalHamburgGmbHMember2022-01-012022-12-310001243429mt:ArcelorMittalDuisburgGmbHMembermt:EuropeSegmentMember2022-01-012022-12-310001243429mt:ArcelorMittalInternationalLuxembourgS.A.Membermt:EuropeSegmentMember2022-01-012022-12-310001243429mt:ArcelorMittalSouthAfricaLtd.Membermt:ACISMember2022-01-012022-12-310001243429mt:JSCArcelorMittalTemirtauMembermt:ACISMember2022-01-012022-12-310001243429mt:PJSCArcelorMittalKryvyiRihMembermt:ACISMember2022-01-012022-12-310001243429mt:MiningMembermt:ArcelorMittalMiningCanadaGPAndArcelorMittalInfrastructureCanadaGPAMMCMember2022-01-012022-12-310001243429mt:MiningMembermt:ArcelorMittalLiberiaLtdMember2022-01-012022-12-310001243429mt:AcindarIndustriaArgentinadeAcerosS.A.Member2022-12-310001243429mt:AcindarIndustriaArgentinadeAcerosS.A.Member2021-12-310001243429mt:AcindarIndustriaArgentinadeAcerosS.A.Member2020-12-310001243429mt:AcindarIndustriaArgentinadeAcerosS.A.Member2022-01-012022-12-310001243429mt:AcindarIndustriaArgentinadeAcerosS.A.Member2021-01-012021-12-310001243429mt:AcindarIndustriaArgentinadeAcerosS.A.Member2020-01-012020-12-310001243429mt:IndustriasUniconCAMember2022-12-310001243429mt:IndustriasUniconCAMember2021-12-310001243429mt:IndustriasUniconCAMember2020-12-31mt:acquisitions0001243429mt:JohnLawrieMetalsLimitedMember2022-02-28iso4217:GBP0001243429mt:JohnLawrieMetalsLimitedMember2022-02-282022-02-280001243429mt:ArchitecturalSteelLimitedMember2022-05-020001243429mt:ArchitecturalSteelLimitedMember2022-05-022022-05-020001243429mt:CentroServiziMetalliSpAMember2022-05-092022-05-090001243429mt:CentroServiziMetalliSpAMember2022-05-090001243429mt:ArcelorMittalTexasHBILLCMember2022-06-302022-06-300001243429mt:ArcelorMittalTexasHBILLCMember2022-06-300001243429mt:ArcelorMittalTexasHBILLCMember2022-07-012022-12-310001243429mt:ALBAInternationalRecyclingMember2022-07-012022-07-010001243429mt:ALBAInternationalRecyclingMember2022-07-010001243429mt:ALBAInternationalRecyclingMember2022-07-022022-12-310001243429mt:CompanhiaSiderurgicaDoPecemMember2022-07-280001243429mt:CompanhiaSiderurgicaDoPecemMember2022-07-282022-07-28utr:km0001243429mt:RiwaldRecyclingMemberifrs-full:MajorBusinessCombinationMember2023-01-030001243429mt:CondesaTubosSLCondesaMember2021-11-182021-11-180001243429mt:CondesaTubosSLCondesaMember2021-11-190001243429mt:CondesaTubosSLCondesaMember2021-11-192021-11-1900012434292020-03-042020-03-040001243429mt:ArcelorMittalItaliaS.p.AMember2020-12-1400012434292020-12-14mt:capital_increase0001243429mt:AMInvestcoItalyS.p.A.Memberifrs-full:DisposalGroupsClassifiedAsHeldForSaleMember2021-04-142021-04-140001243429mt:AMInvestcoItalyS.p.A.Memberifrs-full:DisposalGroupsClassifiedAsHeldForSaleMember2022-01-012022-05-310001243429mt:DisposalGroupDisposedofbySaleNotDiscontinuedOperationsMembermt:AcciaierieDItaliaHoldingMember2021-04-140001243429mt:AcciaierieDItaliaHoldingMember2021-04-142021-04-140001243429mt:DisposalGroupDisposedofbySaleNotDiscontinuedOperationsMembermt:AcciaierieDItaliaHoldingMember2021-04-142021-04-140001243429mt:DisposalGroupDisposedofbySaleNotDiscontinuedOperationsMembermt:AMUSADivestmentBusinessMember2020-12-092020-12-090001243429mt:AMUSADivestmentBusinessMemberifrs-full:OrdinarySharesMembermt:ClevelandCliffsIncMember2020-12-090001243429mt:AMUSADivestmentBusinessMembermt:ClevelandCliffsIncMemberifrs-full:PreferenceSharesMember2020-12-090001243429mt:DisposalGroupDisposedofbySaleNotDiscontinuedOperationsMembermt:AMUSADivestmentBusinessMember2021-04-012021-06-3000012434292020-12-092020-12-090001243429mt:DisposalGroupDisposedofbySaleNotDiscontinuedOperationsMembermt:AMUSADivestmentBusinessMember2020-12-090001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2022-01-012022-12-310001243429mt:AcciaierieDItaliaHoldingMember2022-01-012022-12-310001243429mt:CalvertMember2022-01-012022-12-310001243429mt:ValinArcelorMittalAutomotiveSteelMember2022-01-012022-12-310001243429mt:TamehMember2022-01-012022-12-310001243429mt:BorcelikCelikSanayiiTicaretAnonimSirketiMember2022-01-012022-12-310001243429mt:ArcelorMittalTubularProductsAlJubailMember2022-01-012022-12-310001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2022-12-310001243429mt:AcciaierieDItaliaHoldingMember2022-12-310001243429mt:CalvertMember2022-12-310001243429mt:ValinArcelorMittalAutomotiveSteelMember2022-12-310001243429mt:TamehMember2022-12-310001243429mt:BorcelikCelikSanayiiTicaretAnonimSirketiMember2022-12-310001243429mt:ArcelorMittalTubularProductsAlJubailMember2022-12-310001243429ifrs-full:JointVenturesMember2022-12-310001243429ifrs-full:JointVenturesMember2022-01-012022-12-310001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2021-01-012021-12-310001243429mt:AcciaierieDItaliaHoldingMember2021-01-012021-12-310001243429mt:CalvertMember2021-01-012021-12-310001243429mt:ValinArcelorMittalAutomotiveSteelMember2021-01-012021-12-310001243429mt:TamehMember2021-01-012021-12-310001243429mt:BorcelikCelikSanayiiTicaretAnonimSirketiMember2021-01-012021-12-310001243429mt:ArcelorMittalTubularProductsAlJubailMember2021-01-012021-12-310001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2021-12-310001243429mt:AcciaierieDItaliaHoldingMember2021-12-310001243429mt:CalvertMember2021-12-310001243429mt:ValinArcelorMittalAutomotiveSteelMember2021-12-310001243429mt:TamehMember2021-12-310001243429mt:BorcelikCelikSanayiiTicaretAnonimSirketiMember2021-12-310001243429mt:ArcelorMittalTubularProductsAlJubailMember2021-12-310001243429ifrs-full:JointVenturesMember2021-12-310001243429ifrs-full:JointVenturesMember2021-01-012021-12-310001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2020-01-012020-12-310001243429mt:CalvertMember2020-01-012020-12-310001243429mt:ValinArcelorMittalAutomotiveSteelMember2020-01-012020-12-310001243429mt:TamehMember2020-01-012020-12-310001243429mt:BorcelikCelikSanayiiTicaretAnonimSirketiMember2020-01-012020-12-310001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2020-12-310001243429mt:CalvertMember2020-12-310001243429mt:ValinArcelorMittalAutomotiveSteelMember2020-12-310001243429mt:TamehMember2020-12-310001243429mt:BorcelikCelikSanayiiTicaretAnonimSirketiMember2020-12-310001243429ifrs-full:JointVenturesMember2020-12-310001243429ifrs-full:JointVenturesMember2020-01-012020-12-310001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2019-12-082019-12-080001243429mt:ArcelorMittalNipponSteelIndiaLimitedMembermt:NipponSteelCorporationMember2019-12-082019-12-080001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2019-12-162019-12-16mt:plantmt:service_centermt:plant_system0001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2018-10-260001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2018-10-262018-10-26mt:stage0001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2020-02-130001243429mt:ArcelorMittalNipponSteelIndiaLimitedMembermt:SevenBillionTermFacilityDue2020Member2020-02-132020-02-130001243429mt:SevenBillionTermFacilityDue2020Member2018-11-200001243429mt:ArcelorMittalNipponSteelIndiaLimitedMembermt:NipponSteelCorporationMemberifrs-full:JointVenturesWhereEntityIsVenturerMember2020-02-132020-02-130001243429mt:FivePointOneFourSixBillionTermLoanDue2030Member2020-03-160001243429mt:FivePointOneFourSixBillionTermLoanDue2030Member2020-03-162020-03-160001243429mt:SevenBillionBridgeTermFacilitiesMember2020-03-270001243429mt:EssarGroupMembermt:ArcelorMittalNipponSteelIndiaLimitedMember2022-08-260001243429mt:EssarGroupMembermt:ArcelorMittalNipponSteelIndiaLimitedMembermt:HaziraMember2022-10-190001243429mt:EssarGroupMembermt:ArcelorMittalNipponSteelIndiaLimitedMembermt:ParadeepOdishaMember2022-11-150001243429mt:ArcelorMittalNipponSteelIndiaLimitedMembermt:ParadeepOdishaMember2021-09-012021-09-30utr:t0001243429mt:ArcelorMittalNipponSteelIndiaLimitedMembercountry:IN2021-09-012021-09-300001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2022-10-012022-10-310001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2022-10-310001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2022-09-300001243429mt:AcciaierieDItaliaHoldingMember2022-05-312022-05-310001243429mt:InvitaliaMembermt:AcciaierieDItaliaHoldingMember2022-12-012022-12-310001243429mt:ArcelorMittalMembermt:AcciaierieDItaliaHoldingMember2022-12-012022-12-310001243429ifrs-full:MajorBusinessCombinationMembermt:InvitaliaMembermt:AcciaierieDItaliaHoldingMember2023-02-142023-02-140001243429mt:ArcelorMittalMemberifrs-full:MajorBusinessCombinationMembermt:AcciaierieDItaliaHoldingMember2023-02-142023-02-140001243429mt:CalvertMember2020-12-092020-12-09mt:facility0001243429mt:ArcelorMittalTubularProductsAlJubailMemberifrs-full:JointVenturesWhereEntityIsVenturerMember2020-12-310001243429mt:ArcelorMittalTubularProductsAlJubailMemberifrs-full:JointVenturesWhereEntityIsVenturerMember2021-01-012021-12-310001243429mt:ArcelorMittalTubularProductsAlJubailMember2020-01-012020-12-310001243429mt:ChinaOrientalGroupCompanyLimitedMember2022-01-012022-12-310001243429mt:DHSGroupMember2022-01-012022-12-310001243429mt:GonvarriSteelIndustriesMember2022-01-012022-12-310001243429mt:BaffinlandMember2022-01-012022-12-310001243429mt:ChinaOrientalGroupCompanyLimitedMember2022-12-310001243429mt:DHSGroupMember2022-12-310001243429mt:GonvarriSteelIndustriesMember2022-12-310001243429mt:BaffinlandMember2022-12-310001243429ifrs-full:AssociatesMember2022-12-310001243429ifrs-full:AssociatesMember2022-01-012022-12-310001243429mt:DHSGroupMember2020-01-012020-12-310001243429mt:BaffinlandMember2020-09-012020-09-300001243429mt:ChinaOrientalGroupCompanyLimitedMember2021-01-012021-12-310001243429mt:DHSGroupMember2021-01-012021-12-310001243429mt:GonvarriSteelIndustriesMember2021-01-012021-12-310001243429mt:BaffinlandMember2021-01-012021-12-310001243429mt:ChinaOrientalGroupCompanyLimitedMember2021-12-310001243429mt:DHSGroupMember2021-12-310001243429mt:GonvarriSteelIndustriesMember2021-12-310001243429mt:BaffinlandMember2021-12-310001243429ifrs-full:AssociatesMember2021-12-310001243429ifrs-full:AssociatesMember2021-01-012021-12-310001243429mt:ChinaOrientalGroupCompanyLimitedMember2020-01-012020-12-310001243429mt:GonvarriSteelIndustriesMember2020-01-012020-12-310001243429mt:BaffinlandMember2020-01-012020-12-310001243429mt:ChinaOrientalGroupCompanyLimitedMember2020-12-310001243429mt:DHSGroupMember2020-12-310001243429mt:GonvarriSteelIndustriesMember2020-12-310001243429mt:BaffinlandMember2020-12-310001243429ifrs-full:AssociatesMember2020-12-310001243429ifrs-full:AssociatesMember2020-01-012020-12-310001243429mt:DHSGroupMember2020-12-312020-12-310001243429mt:BaffinlandMember2019-01-012019-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialAssociatesMember2022-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialJointVenturesMember2022-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialJointVenturesMemberifrs-full:AggregatedIndividuallyImmaterialAssociatesMember2022-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialAssociatesMember2021-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialJointVenturesMember2021-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialJointVenturesMemberifrs-full:AggregatedIndividuallyImmaterialAssociatesMember2021-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialAssociatesMember2022-01-012022-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialJointVenturesMember2022-01-012022-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialJointVenturesMemberifrs-full:AggregatedIndividuallyImmaterialAssociatesMember2022-01-012022-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialAssociatesMember2021-01-012021-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialJointVenturesMember2021-01-012021-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialJointVenturesMemberifrs-full:AggregatedIndividuallyImmaterialAssociatesMember2021-01-012021-12-310001243429mt:PeaColoradaMember2021-01-012021-12-310001243429mt:PeaColoradaMember2022-01-012022-12-310001243429mt:OtherInvestments1Membermt:EregliDemirveCelikFabrikalariT.A.S.Member2022-12-310001243429mt:OtherInvestments1Membermt:EregliDemirveCelikFabrikalariT.A.S.Member2021-12-310001243429mt:OtherInvestments1Membermt:ArcelorMitalXCarbMember2022-12-310001243429mt:OtherInvestments1Membermt:ArcelorMitalXCarbMember2021-12-310001243429mt:StalproduktSAMembermt:OtherInvestments1Member2022-12-310001243429mt:StalproduktSAMembermt:OtherInvestments1Member2021-12-310001243429mt:OtherInvestments1Membermt:OtherInvestmentIssuersMember2022-12-310001243429mt:OtherInvestments1Membermt:OtherInvestmentIssuersMember2021-12-310001243429mt:OtherInvestments1Member2022-12-310001243429mt:OtherInvestments1Member2021-12-310001243429mt:OtherInvestments1Membermt:EregliDemirveCelikFabrikalariT.A.S.Member2022-01-012022-12-310001243429mt:OtherInvestments1Membermt:EregliDemirveCelikFabrikalariT.A.S.Member2021-01-012021-12-310001243429ifrs-full:OrdinarySharesMembermt:ClevelandCliffsIncMember2020-12-090001243429mt:ClevelandCliffsIncMemberifrs-full:PreferenceSharesMember2020-12-090001243429ifrs-full:OrdinarySharesMembermt:ClevelandCliffsIncMember2020-01-012020-12-310001243429mt:ClevelandCliffsIncMemberifrs-full:PreferenceSharesMember2020-01-012020-12-310001243429mt:OtherInvestments1Membermt:ClevelandCliffsIncMember2021-02-092021-06-180001243429mt:OtherInvestments1Membermt:ClevelandCliffsIncMember2021-06-182021-06-180001243429mt:OtherInvestments1Memberifrs-full:PreferenceSharesMembermt:ClevelandCliffsIncMember2021-07-282021-07-280001243429mt:OtherInvestments1Membermt:ClevelandCliffsIncMember2021-07-282021-07-280001243429mt:OtherInvestments1Membermt:ArcelorMitalXCarbMembersrt:MaximumMember2022-12-310001243429mt:OtherInvestments1Membermt:ArcelorMitalXCarbMember2022-01-012022-12-310001243429mt:OtherInvestments1Membermt:ArcelorMitalXCarbMember2021-01-012021-12-310001243429mt:StalproduktSAMembermt:OtherInvestments1Member2022-01-012022-12-310001243429mt:StalproduktSAMembermt:OtherInvestments1Member2021-01-012021-12-310001243429mt:StalproduktSAMember2022-01-012022-12-310001243429mt:PowercellSwedenMembermt:OtherInvestments1Member2020-01-012020-12-310001243429mt:ErdemirMember2022-01-012022-12-310001243429mt:ErdemirMember2021-01-012021-12-310001243429mt:ErdemirMember2020-01-012020-12-31mt:segment0001243429mt:NAFTAMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429mt:BrazilSegmentMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429mt:EuropeSegmentMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429ifrs-full:OperatingSegmentsMembermt:ACISMember2022-01-012022-12-310001243429mt:MiningMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429ifrs-full:OperatingSegmentsMemberifrs-full:AllOtherSegmentsMember2022-01-012022-12-310001243429mt:NAFTAMemberifrs-full:EliminationOfIntersegmentAmountsMember2022-01-012022-12-310001243429mt:BrazilSegmentMemberifrs-full:EliminationOfIntersegmentAmountsMember2022-01-012022-12-310001243429ifrs-full:EliminationOfIntersegmentAmountsMembermt:EuropeSegmentMember2022-01-012022-12-310001243429ifrs-full:EliminationOfIntersegmentAmountsMembermt:ACISMember2022-01-012022-12-310001243429mt:MiningMemberifrs-full:EliminationOfIntersegmentAmountsMember2022-01-012022-12-310001243429ifrs-full:EliminationOfIntersegmentAmountsMemberifrs-full:AllOtherSegmentsMember2022-01-012022-12-310001243429ifrs-full:EliminationOfIntersegmentAmountsMember2022-01-012022-12-310001243429mt:NAFTAMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429mt:BrazilSegmentMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429mt:EuropeSegmentMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429ifrs-full:OperatingSegmentsMembermt:ACISMember2021-01-012021-12-310001243429mt:MiningMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429ifrs-full:OperatingSegmentsMemberifrs-full:AllOtherSegmentsMember2021-01-012021-12-310001243429mt:NAFTAMemberifrs-full:EliminationOfIntersegmentAmountsMember2021-01-012021-12-310001243429mt:BrazilSegmentMemberifrs-full:EliminationOfIntersegmentAmountsMember2021-01-012021-12-310001243429ifrs-full:EliminationOfIntersegmentAmountsMembermt:EuropeSegmentMember2021-01-012021-12-310001243429ifrs-full:EliminationOfIntersegmentAmountsMembermt:ACISMember2021-01-012021-12-310001243429mt:MiningMemberifrs-full:EliminationOfIntersegmentAmountsMember2021-01-012021-12-310001243429ifrs-full:EliminationOfIntersegmentAmountsMemberifrs-full:AllOtherSegmentsMember2021-01-012021-12-310001243429ifrs-full:EliminationOfIntersegmentAmountsMember2021-01-012021-12-310001243429mt:NAFTAMemberifrs-full:OperatingSegmentsMember2020-01-012020-12-310001243429mt:BrazilSegmentMemberifrs-full:OperatingSegmentsMember2020-01-012020-12-310001243429mt:EuropeSegmentMemberifrs-full:OperatingSegmentsMember2020-01-012020-12-310001243429ifrs-full:OperatingSegmentsMembermt:ACISMember2020-01-012020-12-310001243429mt:MiningMemberifrs-full:OperatingSegmentsMember2020-01-012020-12-310001243429ifrs-full:OperatingSegmentsMemberifrs-full:AllOtherSegmentsMember2020-01-012020-12-310001243429mt:NAFTAMemberifrs-full:EliminationOfIntersegmentAmountsMember2020-01-012020-12-310001243429mt:BrazilSegmentMemberifrs-full:EliminationOfIntersegmentAmountsMember2020-01-012020-12-310001243429ifrs-full:EliminationOfIntersegmentAmountsMembermt:EuropeSegmentMember2020-01-012020-12-310001243429ifrs-full:EliminationOfIntersegmentAmountsMembermt:ACISMember2020-01-012020-12-310001243429mt:MiningMemberifrs-full:EliminationOfIntersegmentAmountsMember2020-01-012020-12-310001243429ifrs-full:EliminationOfIntersegmentAmountsMemberifrs-full:AllOtherSegmentsMember2020-01-012020-12-310001243429ifrs-full:EliminationOfIntersegmentAmountsMember2020-01-012020-12-310001243429country:US2022-01-012022-12-310001243429country:US2021-01-012021-12-310001243429country:US2020-01-012020-12-310001243429country:BR2022-01-012022-12-310001243429country:BR2021-01-012021-12-310001243429country:BR2020-01-012020-12-310001243429country:CA2022-01-012022-12-310001243429country:CA2021-01-012021-12-310001243429country:CA2020-01-012020-12-310001243429country:MX2022-01-012022-12-310001243429country:MX2021-01-012021-12-310001243429country:MX2020-01-012020-12-310001243429country:AR2022-01-012022-12-310001243429country:AR2021-01-012021-12-310001243429country:AR2020-01-012020-12-310001243429mt:OtherAmericasMember2022-01-012022-12-310001243429mt:OtherAmericasMember2021-01-012021-12-310001243429mt:OtherAmericasMember2020-01-012020-12-310001243429srt:AmericasMember2022-01-012022-12-310001243429srt:AmericasMember2021-01-012021-12-310001243429srt:AmericasMember2020-01-012020-12-310001243429country:DE2022-01-012022-12-310001243429country:DE2021-01-012021-12-310001243429country:DE2020-01-012020-12-310001243429country:PL2022-01-012022-12-310001243429country:PL2021-01-012021-12-310001243429country:PL2020-01-012020-12-310001243429country:FR2022-01-012022-12-310001243429country:FR2021-01-012021-12-310001243429country:FR2020-01-012020-12-310001243429country:ES2022-01-012022-12-310001243429country:ES2021-01-012021-12-310001243429country:ES2020-01-012020-12-310001243429country:IT2022-01-012022-12-310001243429country:IT2021-01-012021-12-310001243429country:IT2020-01-012020-12-310001243429country:CZ2022-01-012022-12-310001243429country:CZ2021-01-012021-12-310001243429country:CZ2020-01-012020-12-310001243429country:TR2022-01-012022-12-310001243429country:TR2021-01-012021-12-310001243429country:TR2020-01-012020-12-310001243429country:GB2022-01-012022-12-310001243429country:GB2021-01-012021-12-310001243429country:GB2020-01-012020-12-310001243429country:BE2022-01-012022-12-310001243429country:BE2021-01-012021-12-310001243429country:BE2020-01-012020-12-310001243429country:NL2022-01-012022-12-310001243429country:NL2021-01-012021-12-310001243429country:NL2020-01-012020-12-310001243429country:RU2022-01-012022-12-310001243429country:RU2021-01-012021-12-310001243429country:RU2020-01-012020-12-310001243429country:RO2022-01-012022-12-310001243429country:RO2021-01-012021-12-310001243429country:RO2020-01-012020-12-310001243429country:UA2020-01-012020-12-310001243429mt:OtherEuropeMember2022-01-012022-12-310001243429mt:OtherEuropeMember2021-01-012021-12-310001243429mt:OtherEuropeMember2020-01-012020-12-310001243429srt:EuropeMember2021-01-012021-12-310001243429srt:EuropeMember2020-01-012020-12-310001243429country:ZA2022-01-012022-12-310001243429country:ZA2021-01-012021-12-310001243429country:ZA2020-01-012020-12-310001243429country:MA2022-01-012022-12-310001243429country:MA2021-01-012021-12-310001243429country:MA2020-01-012020-12-310001243429country:EG2022-01-012022-12-310001243429country:EG2021-01-012021-12-310001243429country:EG2020-01-012020-12-310001243429mt:RestofAfricaMember2022-01-012022-12-310001243429mt:RestofAfricaMember2021-01-012021-12-310001243429mt:RestofAfricaMember2020-01-012020-12-310001243429country:CN2022-01-012022-12-310001243429country:CN2021-01-012021-12-310001243429country:CN2020-01-012020-12-310001243429country:KZ2022-01-012022-12-310001243429country:KZ2021-01-012021-12-310001243429country:KZ2020-01-012020-12-310001243429country:KR2022-01-012022-12-310001243429country:KR2021-01-012021-12-310001243429country:KR2020-01-012020-12-310001243429country:IN2022-01-012022-12-310001243429country:IN2021-01-012021-12-310001243429country:IN2020-01-012020-12-310001243429mt:RestofAsiaMember2022-01-012022-12-310001243429mt:RestofAsiaMember2021-01-012021-12-310001243429mt:RestofAsiaMember2020-01-012020-12-310001243429mt:AsiaandAfricaMember2022-01-012022-12-310001243429mt:AsiaandAfricaMember2021-01-012021-12-310001243429mt:AsiaandAfricaMember2020-01-012020-12-310001243429country:LU2022-01-012022-12-310001243429country:LU2021-01-012021-12-310001243429country:LU2020-01-012020-12-310001243429country:CA2022-12-310001243429country:CA2021-12-310001243429country:BR2022-12-310001243429country:BR2021-12-310001243429country:US2022-12-310001243429country:US2021-12-310001243429country:MX2022-12-310001243429country:MX2021-12-310001243429country:AR2022-12-310001243429country:AR2021-12-310001243429country:VE2022-12-310001243429country:VE2021-12-310001243429mt:OtherAmericasMember2022-12-310001243429mt:OtherAmericasMember2021-12-310001243429srt:AmericasMember2022-12-310001243429srt:AmericasMember2021-12-310001243429country:FR2022-12-310001243429country:FR2021-12-310001243429country:DE2022-12-310001243429country:DE2021-12-310001243429country:BE2022-12-310001243429country:BE2021-12-310001243429country:PL2022-12-310001243429country:PL2021-12-310001243429country:ES2022-12-310001243429country:ES2021-12-310001243429country:LU2022-12-310001243429country:LU2021-12-310001243429country:BA2022-12-310001243429country:BA2021-12-310001243429country:RO2022-12-310001243429country:RO2021-12-310001243429country:CZ2022-12-310001243429country:CZ2021-12-310001243429mt:OtherEuropeMember2022-12-310001243429mt:OtherEuropeMember2021-12-310001243429srt:EuropeMember2022-12-310001243429srt:EuropeMember2021-12-310001243429country:KZ2022-12-310001243429country:KZ2021-12-310001243429country:ZA2022-12-310001243429country:ZA2021-12-310001243429country:LR2022-12-310001243429country:LR2021-12-310001243429country:MA2022-12-310001243429country:MA2021-12-310001243429mt:OtherAsiaandAfricaMember2022-12-310001243429mt:OtherAsiaandAfricaMember2021-12-310001243429mt:AsiaandAfricaMember2022-12-310001243429mt:AsiaandAfricaMember2021-12-310001243429mt:FlatproductsMember2022-01-012022-12-310001243429mt:FlatproductsMember2021-01-012021-12-310001243429mt:FlatproductsMember2020-01-012020-12-310001243429mt:LongproductsMember2022-01-012022-12-310001243429mt:LongproductsMember2021-01-012021-12-310001243429mt:LongproductsMember2020-01-012020-12-310001243429mt:TubularproductsMember2022-01-012022-12-310001243429mt:TubularproductsMember2021-01-012021-12-310001243429mt:TubularproductsMember2020-01-012020-12-310001243429mt:MiningproductsMember2022-01-012022-12-310001243429mt:MiningproductsMember2021-01-012021-12-310001243429mt:MiningproductsMember2020-01-012020-12-310001243429mt:OtherproductsMember2022-01-012022-12-310001243429mt:OtherproductsMember2021-01-012021-12-310001243429mt:OtherproductsMember2020-01-012020-12-310001243429mt:NAFTAMemberifrs-full:OperatingSegmentsMembermt:SteelSalesMember2022-01-012022-12-310001243429mt:BrazilSegmentMemberifrs-full:OperatingSegmentsMembermt:SteelSalesMember2022-01-012022-12-310001243429mt:EuropeSegmentMemberifrs-full:OperatingSegmentsMembermt:SteelSalesMember2022-01-012022-12-310001243429ifrs-full:OperatingSegmentsMembermt:ACISMembermt:SteelSalesMember2022-01-012022-12-310001243429mt:MiningMemberifrs-full:OperatingSegmentsMembermt:SteelSalesMember2022-01-012022-12-310001243429mt:SteelSalesMemberifrs-full:UnallocatedAmountsMember2022-01-012022-12-310001243429mt:SteelSalesMember2022-01-012022-12-310001243429mt:NAFTAMembermt:NonSteelSalesMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429mt:BrazilSegmentMembermt:NonSteelSalesMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429mt:NonSteelSalesMembermt:EuropeSegmentMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429mt:NonSteelSalesMemberifrs-full:OperatingSegmentsMembermt:ACISMember2022-01-012022-12-310001243429mt:MiningMembermt:NonSteelSalesMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429mt:NonSteelSalesMemberifrs-full:UnallocatedAmountsMember2022-01-012022-12-310001243429mt:NonSteelSalesMember2022-01-012022-12-310001243429mt:NAFTAMembermt:ByProductSalesMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429mt:BrazilSegmentMembermt:ByProductSalesMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429mt:EuropeSegmentMembermt:ByProductSalesMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429mt:ByProductSalesMemberifrs-full:OperatingSegmentsMembermt:ACISMember2022-01-012022-12-310001243429mt:MiningMembermt:ByProductSalesMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429mt:ByProductSalesMemberifrs-full:UnallocatedAmountsMember2022-01-012022-12-310001243429mt:ByProductSalesMember2022-01-012022-12-310001243429mt:NAFTAMembermt:OtherSalesMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429mt:BrazilSegmentMembermt:OtherSalesMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429mt:EuropeSegmentMembermt:OtherSalesMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429mt:OtherSalesMemberifrs-full:OperatingSegmentsMembermt:ACISMember2022-01-012022-12-310001243429mt:MiningMembermt:OtherSalesMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429mt:OtherSalesMemberifrs-full:UnallocatedAmountsMember2022-01-012022-12-310001243429mt:OtherSalesMember2022-01-012022-12-310001243429ifrs-full:UnallocatedAmountsMember2022-01-012022-12-310001243429mt:NAFTAMemberifrs-full:OperatingSegmentsMembermt:SteelSalesMember2021-01-012021-12-310001243429mt:BrazilSegmentMemberifrs-full:OperatingSegmentsMembermt:SteelSalesMember2021-01-012021-12-310001243429mt:EuropeSegmentMemberifrs-full:OperatingSegmentsMembermt:SteelSalesMember2021-01-012021-12-310001243429ifrs-full:OperatingSegmentsMembermt:ACISMembermt:SteelSalesMember2021-01-012021-12-310001243429mt:MiningMemberifrs-full:OperatingSegmentsMembermt:SteelSalesMember2021-01-012021-12-310001243429mt:SteelSalesMemberifrs-full:UnallocatedAmountsMember2021-01-012021-12-310001243429mt:SteelSalesMember2021-01-012021-12-310001243429mt:NAFTAMembermt:NonSteelSalesMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429mt:BrazilSegmentMembermt:NonSteelSalesMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429mt:NonSteelSalesMembermt:EuropeSegmentMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429mt:NonSteelSalesMemberifrs-full:OperatingSegmentsMembermt:ACISMember2021-01-012021-12-310001243429mt:MiningMembermt:NonSteelSalesMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429mt:NonSteelSalesMemberifrs-full:UnallocatedAmountsMember2021-01-012021-12-310001243429mt:NonSteelSalesMember2021-01-012021-12-310001243429mt:NAFTAMembermt:ByProductSalesMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429mt:BrazilSegmentMembermt:ByProductSalesMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429mt:EuropeSegmentMembermt:ByProductSalesMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429mt:ByProductSalesMemberifrs-full:OperatingSegmentsMembermt:ACISMember2021-01-012021-12-310001243429mt:MiningMembermt:ByProductSalesMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429mt:ByProductSalesMemberifrs-full:UnallocatedAmountsMember2021-01-012021-12-310001243429mt:ByProductSalesMember2021-01-012021-12-310001243429mt:NAFTAMembermt:OtherSalesMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429mt:BrazilSegmentMembermt:OtherSalesMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429mt:EuropeSegmentMembermt:OtherSalesMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429mt:OtherSalesMemberifrs-full:OperatingSegmentsMembermt:ACISMember2021-01-012021-12-310001243429mt:MiningMembermt:OtherSalesMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429mt:OtherSalesMemberifrs-full:UnallocatedAmountsMember2021-01-012021-12-310001243429mt:OtherSalesMember2021-01-012021-12-310001243429ifrs-full:UnallocatedAmountsMember2021-01-012021-12-310001243429mt:NAFTAMemberifrs-full:OperatingSegmentsMembermt:SteelSalesMember2020-01-012020-12-310001243429mt:BrazilSegmentMemberifrs-full:OperatingSegmentsMembermt:SteelSalesMember2020-01-012020-12-310001243429mt:EuropeSegmentMemberifrs-full:OperatingSegmentsMembermt:SteelSalesMember2020-01-012020-12-310001243429ifrs-full:OperatingSegmentsMembermt:ACISMembermt:SteelSalesMember2020-01-012020-12-310001243429mt:MiningMemberifrs-full:OperatingSegmentsMembermt:SteelSalesMember2020-01-012020-12-310001243429mt:SteelSalesMemberifrs-full:UnallocatedAmountsMember2020-01-012020-12-310001243429mt:SteelSalesMember2020-01-012020-12-310001243429mt:NAFTAMembermt:NonSteelSalesMemberifrs-full:OperatingSegmentsMember2020-01-012020-12-310001243429mt:BrazilSegmentMembermt:NonSteelSalesMemberifrs-full:OperatingSegmentsMember2020-01-012020-12-310001243429mt:NonSteelSalesMembermt:EuropeSegmentMemberifrs-full:OperatingSegmentsMember2020-01-012020-12-310001243429mt:NonSteelSalesMemberifrs-full:OperatingSegmentsMembermt:ACISMember2020-01-012020-12-310001243429mt:MiningMembermt:NonSteelSalesMemberifrs-full:OperatingSegmentsMember2020-01-012020-12-310001243429mt:NonSteelSalesMemberifrs-full:UnallocatedAmountsMember2020-01-012020-12-310001243429mt:NonSteelSalesMember2020-01-012020-12-310001243429mt:NAFTAMembermt:ByProductSalesMemberifrs-full:OperatingSegmentsMember2020-01-012020-12-310001243429mt:BrazilSegmentMembermt:ByProductSalesMemberifrs-full:OperatingSegmentsMember2020-01-012020-12-310001243429mt:EuropeSegmentMembermt:ByProductSalesMemberifrs-full:OperatingSegmentsMember2020-01-012020-12-310001243429mt:ByProductSalesMemberifrs-full:OperatingSegmentsMembermt:ACISMember2020-01-012020-12-310001243429mt:MiningMembermt:ByProductSalesMemberifrs-full:OperatingSegmentsMember2020-01-012020-12-310001243429mt:ByProductSalesMemberifrs-full:UnallocatedAmountsMember2020-01-012020-12-310001243429mt:ByProductSalesMember2020-01-012020-12-310001243429mt:NAFTAMembermt:OtherSalesMemberifrs-full:OperatingSegmentsMember2020-01-012020-12-310001243429mt:BrazilSegmentMembermt:OtherSalesMemberifrs-full:OperatingSegmentsMember2020-01-012020-12-310001243429mt:EuropeSegmentMembermt:OtherSalesMemberifrs-full:OperatingSegmentsMember2020-01-012020-12-310001243429mt:OtherSalesMemberifrs-full:OperatingSegmentsMembermt:ACISMember2020-01-012020-12-310001243429mt:MiningMembermt:OtherSalesMemberifrs-full:OperatingSegmentsMember2020-01-012020-12-310001243429mt:OtherSalesMemberifrs-full:UnallocatedAmountsMember2020-01-012020-12-310001243429mt:OtherSalesMember2020-01-012020-12-310001243429ifrs-full:UnallocatedAmountsMember2020-01-012020-12-310001243429ifrs-full:NotLaterThanOneYearMember2022-12-310001243429mt:AMUSADivestmentBusinessMember2022-01-012022-12-310001243429mt:AMUSADivestmentBusinessMember2021-01-012021-12-310001243429mt:AMUSADivestmentBusinessMember2020-01-012020-12-310001243429ifrs-full:FinancialAssetsIndividuallyAssessedForCreditLossesMemberifrs-full:LaterThanSixMonthsMember2022-01-012022-12-310001243429ifrs-full:FinancialAssetsIndividuallyAssessedForCreditLossesMembermt:LessThanSixMonthsMember2022-01-012022-12-310001243429ifrs-full:FinancialAssetsIndividuallyAssessedForCreditLossesMembermt:LaterThanOneMonthMember2022-01-012022-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:TradeReceivablesMember2022-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:TradeReceivablesMember2021-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:AccumulatedImpairmentMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:AccumulatedImpairmentMember2021-12-310001243429ifrs-full:TradeReceivablesMember2022-12-310001243429ifrs-full:TradeReceivablesMember2021-12-310001243429mt:NAFTAMemberifrs-full:TradeReceivablesMember2022-12-310001243429mt:NAFTAMemberifrs-full:TradeReceivablesMember2021-12-310001243429mt:BrazilSegmentMemberifrs-full:TradeReceivablesMember2022-12-310001243429mt:BrazilSegmentMemberifrs-full:TradeReceivablesMember2021-12-310001243429mt:EuropeSegmentMemberifrs-full:TradeReceivablesMember2022-12-310001243429mt:EuropeSegmentMemberifrs-full:TradeReceivablesMember2021-12-310001243429mt:ACISMemberifrs-full:TradeReceivablesMember2022-12-310001243429mt:ACISMemberifrs-full:TradeReceivablesMember2021-12-310001243429mt:MiningMemberifrs-full:TradeReceivablesMember2022-12-310001243429mt:MiningMemberifrs-full:TradeReceivablesMember2021-12-310001243429ifrs-full:CurrentMemberifrs-full:GrossCarryingAmountMemberifrs-full:TradeReceivablesMember2022-12-310001243429ifrs-full:CurrentMemberifrs-full:TradeReceivablesMemberifrs-full:AccumulatedImpairmentMember2022-12-310001243429ifrs-full:CurrentMemberifrs-full:TradeReceivablesMember2022-12-310001243429ifrs-full:CurrentMemberifrs-full:GrossCarryingAmountMemberifrs-full:TradeReceivablesMember2021-12-310001243429ifrs-full:CurrentMemberifrs-full:TradeReceivablesMemberifrs-full:AccumulatedImpairmentMember2021-12-310001243429ifrs-full:CurrentMemberifrs-full:TradeReceivablesMember2021-12-310001243429ifrs-full:NotLaterThanOneMonthMemberifrs-full:GrossCarryingAmountMemberifrs-full:TradeReceivablesMember2022-12-310001243429ifrs-full:NotLaterThanOneMonthMemberifrs-full:TradeReceivablesMemberifrs-full:AccumulatedImpairmentMember2022-12-310001243429ifrs-full:NotLaterThanOneMonthMemberifrs-full:TradeReceivablesMember2022-12-310001243429ifrs-full:NotLaterThanOneMonthMemberifrs-full:GrossCarryingAmountMemberifrs-full:TradeReceivablesMember2021-12-310001243429ifrs-full:NotLaterThanOneMonthMemberifrs-full:TradeReceivablesMemberifrs-full:AccumulatedImpairmentMember2021-12-310001243429ifrs-full:NotLaterThanOneMonthMemberifrs-full:TradeReceivablesMember2021-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMemberifrs-full:TradeReceivablesMember2022-12-310001243429ifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMemberifrs-full:TradeReceivablesMemberifrs-full:AccumulatedImpairmentMember2022-12-310001243429ifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMemberifrs-full:TradeReceivablesMember2022-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMemberifrs-full:TradeReceivablesMember2021-12-310001243429ifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMemberifrs-full:TradeReceivablesMemberifrs-full:AccumulatedImpairmentMember2021-12-310001243429ifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMemberifrs-full:TradeReceivablesMember2021-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:LaterThanTwoMonthsAndNotLaterThanThreeMonthsMemberifrs-full:TradeReceivablesMember2022-12-310001243429ifrs-full:LaterThanTwoMonthsAndNotLaterThanThreeMonthsMemberifrs-full:TradeReceivablesMemberifrs-full:AccumulatedImpairmentMember2022-12-310001243429ifrs-full:LaterThanTwoMonthsAndNotLaterThanThreeMonthsMemberifrs-full:TradeReceivablesMember2022-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:LaterThanTwoMonthsAndNotLaterThanThreeMonthsMemberifrs-full:TradeReceivablesMember2021-12-310001243429ifrs-full:LaterThanTwoMonthsAndNotLaterThanThreeMonthsMemberifrs-full:TradeReceivablesMemberifrs-full:AccumulatedImpairmentMember2021-12-310001243429ifrs-full:LaterThanTwoMonthsAndNotLaterThanThreeMonthsMemberifrs-full:TradeReceivablesMember2021-12-310001243429ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:GrossCarryingAmountMemberifrs-full:TradeReceivablesMember2022-12-310001243429ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:TradeReceivablesMemberifrs-full:AccumulatedImpairmentMember2022-12-310001243429ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:TradeReceivablesMember2022-12-310001243429ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:GrossCarryingAmountMemberifrs-full:TradeReceivablesMember2021-12-310001243429ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:TradeReceivablesMemberifrs-full:AccumulatedImpairmentMember2021-12-310001243429ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:TradeReceivablesMember2021-12-310001243429ifrs-full:LaterThanSixMonthsMemberifrs-full:GrossCarryingAmountMemberifrs-full:TradeReceivablesMember2022-12-310001243429ifrs-full:LaterThanSixMonthsMemberifrs-full:TradeReceivablesMemberifrs-full:AccumulatedImpairmentMember2022-12-310001243429ifrs-full:LaterThanSixMonthsMemberifrs-full:TradeReceivablesMember2022-12-310001243429ifrs-full:LaterThanSixMonthsMemberifrs-full:GrossCarryingAmountMemberifrs-full:TradeReceivablesMember2021-12-310001243429ifrs-full:LaterThanSixMonthsMemberifrs-full:TradeReceivablesMemberifrs-full:AccumulatedImpairmentMember2021-12-310001243429ifrs-full:LaterThanSixMonthsMemberifrs-full:TradeReceivablesMember2021-12-310001243429ifrs-full:TradeReceivablesMember2020-12-310001243429ifrs-full:TradeReceivablesMember2019-12-310001243429ifrs-full:TradeReceivablesMember2022-01-012022-12-310001243429ifrs-full:TradeReceivablesMember2021-01-012021-12-310001243429ifrs-full:TradeReceivablesMember2020-01-012020-12-310001243429ifrs-full:BottomOfRangeMember2022-01-012022-12-310001243429ifrs-full:TopOfRangeMember2022-01-012022-12-310001243429mt:ArcelorMittalSulFluminenseMember2022-12-310001243429mt:ArcelorMittalSulFluminenseMember2021-12-310001243429ifrs-full:GoodwillMember2022-12-310001243429ifrs-full:GoodwillMember2021-12-310001243429mt:ConcessionsPatentsAndLicensesMember2022-12-310001243429mt:ConcessionsPatentsAndLicensesMember2021-12-310001243429ifrs-full:CustomerrelatedIntangibleAssetsMember2022-12-310001243429ifrs-full:CustomerrelatedIntangibleAssetsMember2021-12-310001243429mt:OtherIntangibleAssetsEmissionRightsMember2022-12-310001243429mt:OtherIntangibleAssetsEmissionRightsMember2021-12-310001243429ifrs-full:OtherIntangibleAssetsMember2022-12-310001243429ifrs-full:OtherIntangibleAssetsMember2021-12-310001243429mt:OtherIntangibleAssetsEmissionRightsMembermt:EmissionRightsForwardPurchaseContractMember2022-12-310001243429mt:NAFTAMemberifrs-full:GoodwillMember2021-12-310001243429mt:NAFTAMemberifrs-full:GoodwillMember2022-01-012022-12-310001243429mt:NAFTAMemberifrs-full:GoodwillMember2022-12-310001243429mt:BrazilSegmentMemberifrs-full:GoodwillMember2021-12-310001243429mt:BrazilSegmentMemberifrs-full:GoodwillMember2022-01-012022-12-310001243429mt:BrazilSegmentMemberifrs-full:GoodwillMember2022-12-310001243429ifrs-full:GoodwillMembermt:EuropeSegmentMember2021-12-310001243429ifrs-full:GoodwillMembermt:EuropeSegmentMember2022-01-012022-12-310001243429ifrs-full:GoodwillMembermt:EuropeSegmentMember2022-12-310001243429ifrs-full:GoodwillMembermt:ACISMember2021-12-310001243429ifrs-full:GoodwillMembermt:ACISMember2022-01-012022-12-310001243429ifrs-full:GoodwillMembermt:ACISMember2022-12-310001243429ifrs-full:GoodwillMember2022-01-012022-12-310001243429mt:NAFTAMemberifrs-full:GoodwillMember2020-12-310001243429mt:NAFTAMemberifrs-full:GoodwillMember2021-01-012021-12-310001243429mt:BrazilSegmentMemberifrs-full:GoodwillMember2020-12-310001243429mt:BrazilSegmentMemberifrs-full:GoodwillMember2021-01-012021-12-310001243429ifrs-full:GoodwillMembermt:EuropeSegmentMember2020-12-310001243429ifrs-full:GoodwillMembermt:EuropeSegmentMember2021-01-012021-12-310001243429ifrs-full:GoodwillMembermt:ACISMember2020-12-310001243429ifrs-full:GoodwillMembermt:ACISMember2021-01-012021-12-310001243429ifrs-full:GoodwillMember2020-12-310001243429ifrs-full:GoodwillMember2021-01-012021-12-310001243429ifrs-full:GrossCarryingAmountMembermt:ConcessionsPatentsAndLicensesMember2020-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:CustomerrelatedIntangibleAssetsMember2020-12-310001243429ifrs-full:OtherIntangibleAssetsMemberifrs-full:GrossCarryingAmountMember2020-12-310001243429ifrs-full:GrossCarryingAmountMember2020-12-310001243429ifrs-full:GrossCarryingAmountMembermt:ConcessionsPatentsAndLicensesMember2021-01-012021-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:CustomerrelatedIntangibleAssetsMember2021-01-012021-12-310001243429ifrs-full:OtherIntangibleAssetsMemberifrs-full:GrossCarryingAmountMember2021-01-012021-12-310001243429ifrs-full:GrossCarryingAmountMember2021-01-012021-12-310001243429ifrs-full:GrossCarryingAmountMembermt:ConcessionsPatentsAndLicensesMember2021-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:CustomerrelatedIntangibleAssetsMember2021-12-310001243429ifrs-full:OtherIntangibleAssetsMemberifrs-full:GrossCarryingAmountMember2021-12-310001243429ifrs-full:GrossCarryingAmountMember2021-12-310001243429ifrs-full:GrossCarryingAmountMembermt:ConcessionsPatentsAndLicensesMember2022-01-012022-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:CustomerrelatedIntangibleAssetsMember2022-01-012022-12-310001243429ifrs-full:OtherIntangibleAssetsMemberifrs-full:GrossCarryingAmountMember2022-01-012022-12-310001243429ifrs-full:GrossCarryingAmountMember2022-01-012022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:ConcessionsPatentsAndLicensesMember2022-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:CustomerrelatedIntangibleAssetsMember2022-12-310001243429ifrs-full:OtherIntangibleAssetsMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMembermt:ConcessionsPatentsAndLicensesMember2020-12-310001243429ifrs-full:CustomerrelatedIntangibleAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2020-12-310001243429ifrs-full:OtherIntangibleAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2020-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2020-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMembermt:ConcessionsPatentsAndLicensesMember2021-01-012021-12-310001243429ifrs-full:CustomerrelatedIntangibleAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-01-012021-12-310001243429ifrs-full:OtherIntangibleAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-01-012021-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-01-012021-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMembermt:ConcessionsPatentsAndLicensesMember2021-12-310001243429ifrs-full:CustomerrelatedIntangibleAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-12-310001243429ifrs-full:OtherIntangibleAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMembermt:ConcessionsPatentsAndLicensesMember2022-01-012022-12-310001243429ifrs-full:CustomerrelatedIntangibleAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-01-012022-12-310001243429ifrs-full:OtherIntangibleAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-01-012022-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-01-012022-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMembermt:ConcessionsPatentsAndLicensesMember2022-12-310001243429ifrs-full:CustomerrelatedIntangibleAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-12-310001243429ifrs-full:OtherIntangibleAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-12-310001243429ifrs-full:BuildingsMemberifrs-full:BottomOfRangeMember2022-01-012022-12-310001243429ifrs-full:BuildingsMemberifrs-full:TopOfRangeMember2022-01-012022-12-310001243429ifrs-full:OtherPropertyPlantAndEquipmentMemberifrs-full:BottomOfRangeMember2022-01-012022-12-310001243429ifrs-full:OtherPropertyPlantAndEquipmentMemberifrs-full:TopOfRangeMember2022-01-012022-12-310001243429ifrs-full:BottomOfRangeMembermt:AuxiliaryFacilitiesMember2022-01-012022-12-310001243429mt:AuxiliaryFacilitiesMemberifrs-full:TopOfRangeMember2022-01-012022-12-310001243429mt:OtherFacilitiesMemberifrs-full:BottomOfRangeMember2022-01-012022-12-310001243429mt:OtherFacilitiesMemberifrs-full:TopOfRangeMember2022-01-012022-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:GrossCarryingAmountMember2020-12-310001243429ifrs-full:GrossCarryingAmountMembermt:MachineryEquipmentAndOtherMember2020-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:ConstructionInProgressMember2020-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:GrossCarryingAmountMember2020-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:MiningAssetsMember2020-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:GrossCarryingAmountMember2021-01-012021-12-310001243429ifrs-full:GrossCarryingAmountMembermt:MachineryEquipmentAndOtherMember2021-01-012021-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:ConstructionInProgressMember2021-01-012021-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:GrossCarryingAmountMember2021-01-012021-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:MiningAssetsMember2021-01-012021-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:GrossCarryingAmountMember2021-12-310001243429ifrs-full:GrossCarryingAmountMembermt:MachineryEquipmentAndOtherMember2021-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:ConstructionInProgressMember2021-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:GrossCarryingAmountMember2021-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:MiningAssetsMember2021-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:GrossCarryingAmountMember2022-01-012022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:MachineryEquipmentAndOtherMember2022-01-012022-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:ConstructionInProgressMember2022-01-012022-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:GrossCarryingAmountMember2022-01-012022-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:MiningAssetsMember2022-01-012022-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:MachineryEquipmentAndOtherMember2022-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:ConstructionInProgressMember2022-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:MiningAssetsMember2022-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2020-12-310001243429mt:MachineryEquipmentAndOtherMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2020-12-310001243429ifrs-full:ConstructionInProgressMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2020-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2020-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMemberifrs-full:MiningAssetsMember2020-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-01-012021-12-310001243429mt:MachineryEquipmentAndOtherMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-01-012021-12-310001243429ifrs-full:ConstructionInProgressMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-01-012021-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-01-012021-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMemberifrs-full:MiningAssetsMember2021-01-012021-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-12-310001243429mt:MachineryEquipmentAndOtherMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-12-310001243429ifrs-full:ConstructionInProgressMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMemberifrs-full:MiningAssetsMember2021-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-01-012022-12-310001243429mt:MachineryEquipmentAndOtherMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-01-012022-12-310001243429ifrs-full:ConstructionInProgressMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-01-012022-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-01-012022-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMemberifrs-full:MiningAssetsMember2022-01-012022-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-12-310001243429mt:MachineryEquipmentAndOtherMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-12-310001243429ifrs-full:ConstructionInProgressMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMemberifrs-full:MiningAssetsMember2022-12-310001243429ifrs-full:LandAndBuildingsMember2021-12-310001243429mt:MachineryEquipmentAndOtherMember2021-12-310001243429ifrs-full:ConstructionInProgressMember2021-12-310001243429ifrs-full:RightofuseAssetsMember2021-12-310001243429ifrs-full:MiningAssetsMember2021-12-310001243429ifrs-full:LandAndBuildingsMember2022-12-310001243429mt:MachineryEquipmentAndOtherMember2022-12-310001243429ifrs-full:ConstructionInProgressMember2022-12-310001243429ifrs-full:RightofuseAssetsMember2022-12-310001243429ifrs-full:MiningAssetsMember2022-12-310001243429mt:BrazilSegmentMember2022-12-310001243429mt:BrazilSegmentMember2021-12-310001243429mt:NAFTAMember2022-12-310001243429mt:NAFTAMember2021-12-310001243429mt:EuropeSegmentMember2022-12-310001243429mt:EuropeSegmentMember2021-12-310001243429mt:ACISMember2022-12-310001243429mt:ACISMember2021-12-310001243429ifrs-full:IntangibleAssetsAndGoodwillMember2022-01-012022-12-310001243429ifrs-full:IntangibleAssetsAndGoodwillMember2021-01-012021-12-310001243429ifrs-full:IntangibleAssetsAndGoodwillMember2020-01-012020-12-310001243429mt:TangibleAssetsMember2022-01-012022-12-310001243429mt:TangibleAssetsMember2021-01-012021-12-310001243429mt:TangibleAssetsMember2020-01-012020-12-310001243429ifrs-full:BottomOfRangeMemberifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember2022-10-01mt:uSDPerTonne0001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMemberifrs-full:TopOfRangeMember2022-10-010001243429ifrs-full:BottomOfRangeMemberifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember2021-10-010001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMemberifrs-full:TopOfRangeMember2021-10-010001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember2022-12-310001243429srt:EuropeMember2022-12-310001243429mt:NAFTAMemberifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember2022-10-010001243429mt:BrazilSegmentMemberifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember2022-10-010001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMembermt:EuropeSegmentMember2022-10-010001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMembermt:ACISMember2022-10-010001243429mt:NAFTAMemberifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember2021-10-010001243429mt:BrazilSegmentMemberifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember2021-10-010001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMembermt:EuropeSegmentMember2021-10-010001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMembermt:ACISMember2021-10-010001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember2022-10-012022-10-010001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember2021-10-012021-10-010001243429country:UAsrt:ScenarioForecastMember2023-01-012023-12-310001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMembermt:ACISMember2022-12-310001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMembermt:ACISMember2022-01-012022-12-31mt:cash_generating_unit0001243429mt:ArcelorMittalKriviyRihMember2022-01-012022-12-310001243429country:UAmt:ArcelorMittalKriviyRihMember2022-12-310001243429country:UAmt:ArcelorMittalKriviyRihMember2022-01-012022-12-310001243429country:UAmt:AppliedTo2023Membermt:ArcelorMittalKriviyRihMember2022-12-310001243429country:UAmt:AppliedToSubsequentProjectionsMembermt:ArcelorMittalKriviyRihMember2022-12-310001243429country:UAmt:ArcelorMittalKriviyRihMember2021-12-310001243429mt:EuropeFlatProductsMembersrt:EuropeMembermt:Europe1Member2021-07-012021-12-310001243429mt:EuropeFlatProductsMembersrt:EuropeMembermt:Europe1Member2021-10-010001243429mt:EuropeFlatProductsMembersrt:EuropeMembermt:Europe1Member2020-10-010001243429mt:EuropeFlatProductsMembersrt:EuropeMembermt:Europe1Member2021-12-310001243429mt:FlorangeAndKrakowMember2020-01-012020-12-310001243429mt:FlorangeMember2020-01-012020-12-310001243429mt:KrakowMember2020-01-012020-12-310001243429mt:Europe1Member2020-01-012020-12-310001243429mt:NAFTAMembermt:ArcelorMittalUSALLCMember2020-07-012020-09-300001243429mt:NonFinancialAssetsMember2022-12-310001243429ifrs-full:FinancialAssetsAtAmortisedCostCategoryMembermt:FinancialAssets1Member2022-12-310001243429ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMembermt:FinancialAssets1Member2022-12-310001243429ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMembermt:FinancialAssets1Member2022-12-310001243429mt:FinancialAssets1Member2022-12-310001243429mt:DerivativesCategoryMembermt:FinancialAssets1Member2022-12-310001243429mt:NonFinancialLiabilitiesMember2022-12-310001243429ifrs-full:FinancialLiabilitiesAtAmortisedCostCategoryMembermt:FinancialLiabilities1Member2022-12-310001243429ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMembermt:FinancialLiabilities1Member2022-12-310001243429mt:FinancialLiabilities1Membermt:DerivativesCategoryMember2022-12-310001243429mt:NonFinancialAssetsMember2021-12-310001243429ifrs-full:FinancialAssetsAtAmortisedCostCategoryMembermt:FinancialAssets1Member2021-12-310001243429ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMembermt:FinancialAssets1Member2021-12-310001243429ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMembermt:FinancialAssets1Member2021-12-310001243429mt:DerivativesCategoryMembermt:FinancialAssets1Member2021-12-310001243429mt:NonFinancialLiabilitiesMember2021-12-310001243429ifrs-full:FinancialLiabilitiesAtAmortisedCostCategoryMembermt:FinancialLiabilities1Member2021-12-310001243429ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMembermt:FinancialLiabilities1Member2021-12-310001243429mt:FinancialLiabilities1Membermt:DerivativesCategoryMember2021-12-310001243429ifrs-full:Level1OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMembermt:InvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome1Member2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:InvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome1Memberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMembermt:InvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome1Member2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:InvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome1Member2022-12-310001243429ifrs-full:Level1OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMembermt:TradeAndOtherCurrentReceivablesSubjectToTSRProgramsMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:TradeAndOtherCurrentReceivablesSubjectToTSRProgramsMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMembermt:TradeAndOtherCurrentReceivablesSubjectToTSRProgramsMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:TradeAndOtherCurrentReceivablesSubjectToTSRProgramsMember2022-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:DerivativeFinancialAssetsCurrentMemberifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429mt:DerivativeFinancialAssetsCurrentMemberifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429mt:DerivativeFinancialAssetsCurrentMemberifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429mt:DerivativeFinancialAssetsCurrentMemberifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:DerivativeFinancialAssetsNoncurrentMemberifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429mt:DerivativeFinancialAssetsNoncurrentMemberifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:DerivativeFinancialAssetsNoncurrentMemberifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429mt:DerivativeFinancialAssetsNoncurrentMemberifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429ifrs-full:Level1OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:DerivativefinancialliabilitiescurrentMemberifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429mt:DerivativefinancialliabilitiescurrentMemberifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:DerivativefinancialliabilitiescurrentMemberifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429mt:DerivativefinancialliabilitiescurrentMemberifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:DerivativefinancialliabilitiesnoncurrentMemberifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429mt:DerivativefinancialliabilitiesnoncurrentMemberifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:DerivativefinancialliabilitiesnoncurrentMemberifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429mt:DerivativefinancialliabilitiesnoncurrentMemberifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429ifrs-full:Level1OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMembermt:InvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome1Member2021-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:InvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome1Memberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMembermt:InvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome1Member2021-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:InvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome1Member2021-12-310001243429ifrs-full:Level1OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMembermt:TradeAndOtherCurrentReceivablesSubjectToTSRProgramsMember2021-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:TradeAndOtherCurrentReceivablesSubjectToTSRProgramsMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMembermt:TradeAndOtherCurrentReceivablesSubjectToTSRProgramsMember2021-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:TradeAndOtherCurrentReceivablesSubjectToTSRProgramsMember2021-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:DerivativeFinancialAssetsCurrentMemberifrs-full:RecurringFairValueMeasurementMember2021-12-310001243429mt:DerivativeFinancialAssetsCurrentMemberifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429mt:DerivativeFinancialAssetsCurrentMemberifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMember2021-12-310001243429mt:DerivativeFinancialAssetsCurrentMemberifrs-full:RecurringFairValueMeasurementMember2021-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:DerivativeFinancialAssetsNoncurrentMemberifrs-full:RecurringFairValueMeasurementMember2021-12-310001243429mt:DerivativeFinancialAssetsNoncurrentMemberifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:DerivativeFinancialAssetsNoncurrentMemberifrs-full:RecurringFairValueMeasurementMember2021-12-310001243429mt:DerivativeFinancialAssetsNoncurrentMemberifrs-full:RecurringFairValueMeasurementMember2021-12-310001243429ifrs-full:Level1OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMember2021-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMember2021-12-310001243429ifrs-full:RecurringFairValueMeasurementMember2021-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:DerivativefinancialliabilitiescurrentMemberifrs-full:RecurringFairValueMeasurementMember2021-12-310001243429mt:DerivativefinancialliabilitiescurrentMemberifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:DerivativefinancialliabilitiescurrentMemberifrs-full:RecurringFairValueMeasurementMember2021-12-310001243429mt:DerivativefinancialliabilitiescurrentMemberifrs-full:RecurringFairValueMeasurementMember2021-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:DerivativefinancialliabilitiesnoncurrentMemberifrs-full:RecurringFairValueMeasurementMember2021-12-310001243429mt:DerivativefinancialliabilitiesnoncurrentMemberifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:DerivativefinancialliabilitiesnoncurrentMemberifrs-full:RecurringFairValueMeasurementMember2021-12-310001243429mt:DerivativefinancialliabilitiesnoncurrentMemberifrs-full:RecurringFairValueMeasurementMember2021-12-310001243429ifrs-full:WeightedAverageMember2022-01-012022-12-310001243429ifrs-full:WeightedAverageMember2021-01-012021-12-310001243429mt:ShortTermBilateralCreditFacilitiesMember2022-01-012022-12-310001243429mt:ShortTermBilateralCreditFacilitiesMember2022-12-310001243429mt:TwoPointTwoBillionBridgeTermFacilityMember2022-07-270001243429mt:TwoPointTwoBillionBridgeTermFacilityMember2022-07-272022-07-27mt:extension_option0001243429mt:TwoPointTwoBillionBridgeTermFacilityMember2022-12-080001243429mt:TwoPointTwoBillionBridgeTermFacilityMember2022-12-310001243429mt:TwoPointTwoBillionBridgeTermFacilityMembermt:DebtTransactionsMember2023-01-310001243429mt:CommercialPaper1Member2022-12-310001243429mt:CommercialPaper1Member2021-12-310001243429mt:FivePointFiveBillionRevolvingCreditFacilityDue20232025Member2022-12-310001243429mt:FivePointFiveBillionRevolvingCreditFacilityDue20232025Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:FivePointFiveBillionRevolvingCreditFacilityDue20232025Memberifrs-full:GrossCarryingAmountMember2021-12-310001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2022Member2022-12-310001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2022Memberifrs-full:FixedInterestRateMember2022-12-310001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2022Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2022Memberifrs-full:GrossCarryingAmountMember2021-12-310001243429mt:FiveHundredMillionEURUnsecuredNotesDue2023Member2022-12-310001243429ifrs-full:FixedInterestRateMembermt:FiveHundredMillionEURUnsecuredNotesDue2023Member2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:FiveHundredMillionEURUnsecuredNotesDue2023Member2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:FiveHundredMillionEURUnsecuredNotesDue2023Member2021-12-310001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2023Member2022-12-310001243429ifrs-full:FixedInterestRateMembermt:SevenHundredFiftyMillionEURUnsecuredNotesDue2023Member2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:SevenHundredFiftyMillionEURUnsecuredNotesDue2023Member2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:SevenHundredFiftyMillionEURUnsecuredNotesDue2023Member2021-12-310001243429mt:OneBillionEURUnsecuredNotesDue2024Member2022-12-310001243429ifrs-full:FixedInterestRateMembermt:OneBillionEURUnsecuredNotesDue2024Member2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:OneBillionEURUnsecuredNotesDue2024Member2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:OneBillionEURUnsecuredNotesDue2024Member2021-12-310001243429mt:SevenHundredFiftyMillionUnsecuredNotesDue2024Member2022-12-310001243429mt:SevenHundredFiftyMillionUnsecuredNotesDue2024Memberifrs-full:FixedInterestRateMember2022-12-310001243429mt:SevenHundredFiftyMillionUnsecuredNotesDue2024Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:SevenHundredFiftyMillionUnsecuredNotesDue2024Memberifrs-full:GrossCarryingAmountMember2021-12-310001243429mt:FiveHundredMillionUnsecuredNotesDue2025Member2022-12-310001243429mt:FiveHundredMillionUnsecuredNotesDue2025Memberifrs-full:FixedInterestRateMember2022-12-310001243429mt:FiveHundredMillionUnsecuredNotesDue2025Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:FiveHundredMillionUnsecuredNotesDue2025Memberifrs-full:GrossCarryingAmountMember2021-12-310001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2025Member2022-12-310001243429ifrs-full:FixedInterestRateMembermt:SevenHundredFiftyMillionEURUnsecuredNotesDue2025Member2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:SevenHundredFiftyMillionEURUnsecuredNotesDue2025Member2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:SevenHundredFiftyMillionEURUnsecuredNotesDue2025Member2021-12-310001243429mt:SevenHundredFiftyMillionUnsecuredNotesDue2026Member2022-12-310001243429ifrs-full:FixedInterestRateMembermt:SevenHundredFiftyMillionUnsecuredNotesDue2026Member2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:SevenHundredFiftyMillionUnsecuredNotesDue2026Member2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:SevenHundredFiftyMillionUnsecuredNotesDue2026Member2021-12-310001243429mt:SixHundredMillionEURUnsecuredNotesDue2026Member2022-12-310001243429mt:SixHundredMillionEURUnsecuredNotesDue2026Memberifrs-full:FixedInterestRateMember2022-12-310001243429mt:SixHundredMillionEURUnsecuredNotesDue2026Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:SixHundredMillionEURUnsecuredNotesDue2026Memberifrs-full:GrossCarryingAmountMember2021-12-310001243429mt:OnePointTwoBillionUnsecuredNotesDue2027Member2022-12-310001243429mt:OnePointTwoBillionUnsecuredNotesDue2027Memberifrs-full:FixedInterestRateMember2022-12-310001243429mt:OnePointTwoBillionUnsecuredNotesDue2027Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:OnePointTwoBillionUnsecuredNotesDue2027Memberifrs-full:GrossCarryingAmountMember2021-12-310001243429mt:FiveHundredMillionUnsecuredNotesDue2029Member2022-12-310001243429mt:FiveHundredMillionUnsecuredNotesDue2029Memberifrs-full:FixedInterestRateMember2022-12-310001243429mt:FiveHundredMillionUnsecuredNotesDue2029Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:FiveHundredMillionUnsecuredNotesDue2029Memberifrs-full:GrossCarryingAmountMember2021-12-310001243429mt:OneBillionUnsecuredNotesDue2032Member2022-12-310001243429mt:OneBillionUnsecuredNotesDue2032Memberifrs-full:FixedInterestRateMember2022-12-310001243429mt:OneBillionUnsecuredNotesDue2032Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:OneBillionUnsecuredNotesDue2032Memberifrs-full:GrossCarryingAmountMember2021-12-310001243429mt:OnePointFiveBillionUnsecuredBondsDue2039Member2022-12-310001243429mt:OnePointFiveBillionUnsecuredBondsDue2039Memberifrs-full:FixedInterestRateMember2022-12-310001243429mt:OnePointFiveBillionUnsecuredBondsDue2039Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:OnePointFiveBillionUnsecuredBondsDue2039Memberifrs-full:GrossCarryingAmountMember2021-12-310001243429mt:OneBillionUnsecuredNotesDue2041Member2022-12-310001243429mt:OneBillionUnsecuredNotesDue2041Memberifrs-full:FixedInterestRateMember2022-12-310001243429mt:OneBillionUnsecuredNotesDue2041Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:OneBillionUnsecuredNotesDue2041Memberifrs-full:GrossCarryingAmountMember2021-12-310001243429mt:EIBLoanDue2025Memberifrs-full:FixedInterestRateMember2022-12-310001243429mt:EIBLoanDue2025Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:EIBLoanDue2025Memberifrs-full:GrossCarryingAmountMember2021-12-310001243429ifrs-full:FloatingInterestRateMembermt:EIBLoanDue2032Member2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:EIBLoanDue2032Member2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:EIBLoanDue2032Member2021-12-310001243429ifrs-full:BottomOfRangeMemberifrs-full:FixedInterestRateMembermt:SchuldscheinLoansMember2022-12-310001243429ifrs-full:FixedInterestRateMembermt:SchuldscheinLoansMemberifrs-full:TopOfRangeMember2022-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:FixedInterestRateMembermt:SchuldscheinLoansMember2022-12-310001243429ifrs-full:GrossCarryingAmountMemberifrs-full:FixedInterestRateMembermt:SchuldscheinLoansMember2021-12-310001243429ifrs-full:BottomOfRangeMemberifrs-full:FloatingInterestRateMembermt:SchuldscheinLoansMember2022-12-310001243429ifrs-full:FloatingInterestRateMembermt:SchuldscheinLoansMemberifrs-full:TopOfRangeMember2022-12-310001243429ifrs-full:FloatingInterestRateMemberifrs-full:GrossCarryingAmountMembermt:SchuldscheinLoansMember2022-12-310001243429ifrs-full:FloatingInterestRateMemberifrs-full:GrossCarryingAmountMembermt:SchuldscheinLoansMember2021-12-310001243429mt:OtherLoansDue2023Memberifrs-full:FixedInterestRateMember2022-12-310001243429mt:OtherLoansDue2023Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:OtherLoansDue2023Memberifrs-full:GrossCarryingAmountMember2021-12-310001243429ifrs-full:BottomOfRangeMemberifrs-full:FloatingInterestRateMembermt:OtherLoansDue20292035Member2022-12-310001243429ifrs-full:FloatingInterestRateMemberifrs-full:TopOfRangeMembermt:OtherLoansDue20292035Member2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:OtherLoansDue20292035Member2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:OtherLoansDue20292035Member2021-12-310001243429ifrs-full:GrossCarryingAmountMembermt:CorporateBorrowingsMember2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:CorporateBorrowingsMember2021-12-310001243429ifrs-full:BottomOfRangeMembermt:OtherLoansFixedFloatingDue20232030Membersrt:AmericasMembermt:FixedFloatingInterestRatesMember2022-12-310001243429mt:OtherLoansFixedFloatingDue20232030Membersrt:AmericasMembermt:FixedFloatingInterestRatesMemberifrs-full:TopOfRangeMember2022-12-310001243429mt:OtherLoansFixedFloatingDue20232030Memberifrs-full:GrossCarryingAmountMembersrt:AmericasMember2022-12-310001243429mt:OtherLoansFixedFloatingDue20232030Memberifrs-full:GrossCarryingAmountMembersrt:AmericasMember2021-12-310001243429ifrs-full:GrossCarryingAmountMembersrt:AmericasMember2022-12-310001243429ifrs-full:GrossCarryingAmountMembersrt:AmericasMember2021-12-310001243429ifrs-full:BottomOfRangeMemberifrs-full:FloatingInterestRateMembermt:EBRDFacilityFloatingDueIn2024Member2022-12-310001243429ifrs-full:FloatingInterestRateMemberifrs-full:TopOfRangeMembermt:EBRDFacilityFloatingDueIn2024Member2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:EuropeAsiaAndAfricaMembermt:EBRDFacilityFloatingDueIn2024Member2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:EuropeAsiaAndAfricaMembermt:EBRDFacilityFloatingDueIn2024Member2021-12-310001243429ifrs-full:BottomOfRangeMembermt:FixedFloatingInterestRatesMembermt:OtherLoansFixedFloatingDue20232033Member2022-12-310001243429mt:FixedFloatingInterestRatesMembermt:OtherLoansFixedFloatingDue20232033Memberifrs-full:TopOfRangeMember2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:OtherLoansFixedFloatingDue20232033Membermt:EuropeAsiaAndAfricaMember2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:OtherLoansFixedFloatingDue20232033Membermt:EuropeAsiaAndAfricaMember2021-12-310001243429ifrs-full:GrossCarryingAmountMembermt:EuropeAsiaAndAfricaMember2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:EuropeAsiaAndAfricaMember2021-12-310001243429ifrs-full:GrossCarryingAmountMembermt:LongTermBorrowingsIncludingCurrentPortionMember2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:LongTermBorrowingsIncludingCurrentPortionMember2021-12-310001243429mt:LongTermDebtExcludingLeaseObligationMember2022-12-310001243429mt:LongTermDebtExcludingLeaseObligationMember2021-12-310001243429ifrs-full:LeaseLiabilitiesMember2022-12-310001243429ifrs-full:LeaseLiabilitiesMember2021-12-310001243429mt:FivePointFiveBillionRevolvingCreditFacilityDue20232024Member2018-12-190001243429mt:FivePointFiveBillionRevolvingCreditFacilityDue20232024Member2018-12-192018-12-190001243429mt:FivePointFourBillionRevolvingCreditFacilityDue2024Member2020-12-310001243429mt:ZeroPointOneBillionRevolvingCreditFacilityDue2023Member2020-12-310001243429mt:FivePointFiveBillionRevolvingCreditFacilityDue20232024Member2022-12-310001243429mt:TwoThousandAndTenRevolvingMulticurrencyLetterOfCreditFacilityMember2010-09-300001243429mt:TwoThousandAndTenRevolvingMulticurrencyLetterOfCreditFacilityMember2012-10-260001243429mt:TwoThousandAndTenRevolvingMulticurrencyLetterOfCreditFacilityMember2014-09-300001243429mt:RevolvingMulticurrencyLetterOfCreditFacilityDueIn2022Member2019-07-310001243429mt:TwoThousandAndTenRevolvingMulticurrencyLetterOfCreditFacilityMember2020-11-250001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2022Member2022-01-142022-01-140001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2022Member2022-01-140001243429mt:SixHundredMillionEURUnsecuredNotesDue2026Member2022-09-260001243429mt:SixHundredMillionEURUnsecuredNotesDue2026Memberifrs-full:FixedInterestRateMember2022-09-260001243429mt:OnePointTwoBillionUnsecuredNotesDue2027Member2022-11-290001243429mt:OnePointTwoBillionUnsecuredNotesDue2027Memberifrs-full:FixedInterestRateMember2022-11-290001243429mt:OneBillionUnsecuredNotesDue2032Member2022-11-290001243429mt:OneBillionUnsecuredNotesDue2032Memberifrs-full:FixedInterestRateMember2022-11-290001243429mt:FiveHundredMillionEURUnsecuredNotesDue2023Membermt:NetCarryingAmountMember2022-12-310001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2023Membermt:NetCarryingAmountMember2022-12-310001243429mt:TwoHundredFiftyMillionEURUnsecuredNotesDue2024Member2022-12-310001243429mt:TwoHundredFiftyMillionEURUnsecuredNotesDue2024Membermt:NetCarryingAmountMember2022-12-310001243429mt:TwoHundredFiftyMillionEURUnsecuredNotesDue2024Memberifrs-full:FixedInterestRateMember2022-12-310001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2024Member2022-12-310001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2024Membermt:NetCarryingAmountMember2022-12-310001243429ifrs-full:FixedInterestRateMembermt:SevenHundredFiftyMillionEURUnsecuredNotesDue2024Member2022-12-310001243429mt:SevenHundredFiftyMillionUnsecuredNotesDue2024Membermt:NetCarryingAmountMember2022-12-310001243429mt:FiveHundredMillionUnsecuredNotesDue2025Membermt:NetCarryingAmountMember2022-12-310001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2025Membermt:NetCarryingAmountMember2022-12-310001243429mt:SevenHundredFiftyMillionUnsecuredNotesDue2026Membermt:NetCarryingAmountMember2022-12-310001243429mt:SixHundredMillionEURUnsecuredNotesDue2026Membermt:NetCarryingAmountMember2022-12-310001243429mt:OnePointTwoBillionUnsecuredNotesDue2027Membermt:NetCarryingAmountMember2022-12-310001243429mt:FiveHundredMillionUnsecuredNotesDue2029Membermt:NetCarryingAmountMember2022-12-310001243429mt:OneBillionUnsecuredNotesDue2032Membermt:NetCarryingAmountMember2022-12-310001243429mt:OneBillionUnsecuredBondsDue2039Member2022-12-310001243429mt:OneBillionUnsecuredBondsDue2039Membermt:NetCarryingAmountMember2022-12-310001243429mt:OneBillionUnsecuredBondsDue2039Memberifrs-full:FixedInterestRateMember2022-12-310001243429mt:FiveHundredMillionUnsecuredBondsDue2039Member2022-12-310001243429mt:FiveHundredMillionUnsecuredBondsDue2039Membermt:NetCarryingAmountMember2022-12-310001243429mt:FiveHundredMillionUnsecuredBondsDue2039Memberifrs-full:FixedInterestRateMember2022-12-310001243429mt:OneBillionUnsecuredNotesDue2041Membermt:NetCarryingAmountMember2022-12-310001243429mt:EIBLoanMember2021-06-020001243429mt:EIBLoanMember2022-12-310001243429mt:EIBLoanDue2025Member2016-12-160001243429mt:EIBLoanDue2025Member2022-12-310001243429mt:ThreeHundredAndFortySixPointFiveMillionEuroVariableRateLoanSchuldscheinMarketMember2022-05-040001243429mt:TwentyFourPointFiveMillionEuroFixedRateLoanSchuldscheinMarketMember2022-05-040001243429mt:TwoHunderdSixtyThreeMillionEuroVariableLoanSchuldscheinMarketMember2022-05-040001243429mt:SixtySixMillionEuroFixedRateLoanSchuldscheinMarketMember2022-05-040001243429mt:TwentyFiveMillionEuroFixedRateLoanSchuldscheinMarketMember2022-05-060001243429mt:SchuldscheinLoansMember2022-12-310001243429mt:TwoHundredThirtyFiveMillionEURFacilityAgreementMember2018-12-210001243429mt:TwoHundredThirtyFiveMillionEURFacilityAgreementMember2018-12-182018-12-180001243429mt:TwoHundredThirtyFiveMillionEURFacilityAgreementMember2022-12-310001243429mt:OneHundredAndThirtyMillionCADFinancingAgreementDue20212023Member2021-11-29iso4217:CAD0001243429mt:PJSCArcelorMittalKryvyiRihMembermt:EBRDFacilityFloatingDueIn2024Member2017-12-210001243429mt:PJSCArcelorMittalKryvyiRihMembermt:EBRDFacilityFloatingDueIn2024Member2022-12-310001243429mt:EuropeanBankForReconstructionAndDevelopmentEBRDMember2022-12-150001243429mt:EuropeanBankForReconstructionAndDevelopmentEBRDMember2022-12-310001243429mt:FourPointFiveBillionSouthAfricaRandRevolvingBorrowingBaseFinanceFacilityDueIn2022Membermt:ArcelorMittalSouthAfricaLtd.Member2017-05-25iso4217:ZAR0001243429mt:ThreePointFiveBillionSouthAfricaRandRevolvingBorrowingBaseFinanceFacilityDueIn2023Membermt:ArcelorMittalSouthAfricaLtd.Member2021-08-230001243429mt:FourPointFiveBillionSouthAfricaRandRevolvingBorrowingBaseFinanceFacilityDueIn2022Membermt:ArcelorMittalSouthAfricaLtd.Member2022-12-310001243429ifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2022-12-310001243429ifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2021-12-310001243429ifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2022-01-012022-12-310001243429ifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2021-01-012021-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember2022-12-310001243429ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember2022-12-310001243429ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember2022-12-310001243429ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember2022-12-310001243429ifrs-full:LaterThanFiveYearsMember2022-12-310001243429mt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:FixedInterestRateMember2022-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:FixedInterestRateMember2022-12-310001243429mt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:FixedInterestRateMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:FixedInterestRateMember2022-12-310001243429ifrs-full:FloatingInterestRateMembermt:LongTermBorrowingsIncludingCurrentPortionMember2022-12-310001243429ifrs-full:Level1OfFairValueHierarchyMemberifrs-full:FloatingInterestRateMembermt:LongTermBorrowingsIncludingCurrentPortionMember2022-12-310001243429ifrs-full:FloatingInterestRateMembermt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:FloatingInterestRateMembermt:LongTermBorrowingsIncludingCurrentPortionMember2022-12-310001243429mt:LongTermBorrowingsIncludingCurrentPortionMember2022-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMember2022-12-310001243429mt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMember2022-12-310001243429mt:CurrentBorrowingsMember2022-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:CurrentBorrowingsMember2022-12-310001243429mt:CurrentBorrowingsMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:CurrentBorrowingsMember2022-12-310001243429mt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:FixedInterestRateMember2021-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:FixedInterestRateMember2021-12-310001243429mt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:FixedInterestRateMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:FixedInterestRateMember2021-12-310001243429ifrs-full:FloatingInterestRateMembermt:LongTermBorrowingsIncludingCurrentPortionMember2021-12-310001243429ifrs-full:Level1OfFairValueHierarchyMemberifrs-full:FloatingInterestRateMembermt:LongTermBorrowingsIncludingCurrentPortionMember2021-12-310001243429ifrs-full:FloatingInterestRateMembermt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:FloatingInterestRateMembermt:LongTermBorrowingsIncludingCurrentPortionMember2021-12-310001243429mt:LongTermBorrowingsIncludingCurrentPortionMember2021-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMember2021-12-310001243429mt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMember2021-12-310001243429mt:CurrentBorrowingsMember2021-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:CurrentBorrowingsMember2021-12-310001243429mt:CurrentBorrowingsMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:CurrentBorrowingsMember2021-12-310001243429mt:ArcelorMittalSouthAfricaLtd.Member2022-12-310001243429mt:ArcelorMittalSouthAfricaLtd.Member2021-12-310001243429ifrs-full:LongtermBorrowingsMember2020-12-310001243429ifrs-full:ShorttermBorrowingsMember2020-12-310001243429ifrs-full:LongtermBorrowingsMember2021-01-012021-12-310001243429ifrs-full:ShorttermBorrowingsMember2021-01-012021-12-310001243429ifrs-full:LongtermBorrowingsMember2021-12-310001243429ifrs-full:ShorttermBorrowingsMember2021-12-310001243429ifrs-full:LongtermBorrowingsMember2022-01-012022-12-310001243429ifrs-full:ShorttermBorrowingsMember2022-01-012022-12-310001243429ifrs-full:LongtermBorrowingsMember2022-12-310001243429ifrs-full:ShorttermBorrowingsMember2022-12-310001243429currency:EUR2022-12-310001243429currency:USD2022-12-310001243429currency:ARS2022-12-310001243429currency:BRL2022-12-310001243429currency:INR2022-12-310001243429mt:OtherCurrenciesMember2022-12-310001243429currency:EUR2021-12-310001243429currency:USD2021-12-310001243429currency:PLN2021-12-310001243429currency:CAD2021-12-310001243429currency:ZAR2021-12-310001243429mt:OtherCurrenciesMember2021-12-310001243429mt:ForwardPurchaseContractMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429mt:ForwardSalesContractMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429mt:ExchangeOptionPurchasesMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429mt:ExchangeOptionSalesMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429mt:ForeignExchangeRateInstrumentsMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429mt:TermContractsSalesMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429mt:TermContractsPurchasesMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429mt:OptionsSalesPurchasesMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429mt:RawMaterialsFreightEnergyEmissionRightsMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429mt:ForwardPurchaseContractMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429mt:ForwardSalesContractMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429mt:ExchangeOptionPurchasesMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429mt:ExchangeOptionSalesMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429mt:ForeignExchangeRateInstrumentsMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429mt:TermContractsSalesMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429mt:TermContractsPurchasesMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429mt:RawMaterialsFreightEnergyEmissionRightsMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429ifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429mt:NaturalGasForwardPurchaseContractMember2022-12-310001243429mt:EmissionRightsForwardPurchaseContractMember2022-12-310001243429mt:EmissionRightsForwardPurchaseContractMember2022-01-012022-12-310001243429mt:MandatorilyConvertibleUnsecuredUnsubordinatedBondsMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:CallOption1Member2022-01-012022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:CallOption1Member2021-01-012021-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:MatrixPricingMembermt:CallOption1Member2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:CallOption1Member2020-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:CallOption1Member2021-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:CallOption1Member2022-12-310001243429ifrs-full:InterestRateRiskMemberifrs-full:FixedInterestRateMember2022-12-310001243429ifrs-full:FloatingInterestRateMemberifrs-full:InterestRateRiskMember2022-12-310001243429currency:USDifrs-full:CurrencyRiskMemberifrs-full:TradeReceivablesMember2022-12-310001243429mt:TradePayablesMembercurrency:USDifrs-full:CurrencyRiskMember2022-12-310001243429ifrs-full:CurrencyRiskMembercurrency:EURifrs-full:TradeReceivablesMember2022-12-310001243429mt:TradePayablesMemberifrs-full:CurrencyRiskMembercurrency:EUR2022-12-310001243429ifrs-full:CurrencyRiskMembercurrency:BRLifrs-full:TradeReceivablesMember2022-12-310001243429mt:TradePayablesMemberifrs-full:CurrencyRiskMembercurrency:BRL2022-12-310001243429currency:CADifrs-full:CurrencyRiskMemberifrs-full:TradeReceivablesMember2022-12-310001243429currency:CADmt:TradePayablesMemberifrs-full:CurrencyRiskMember2022-12-310001243429ifrs-full:CurrencyRiskMembercurrency:KZTifrs-full:TradeReceivablesMember2022-12-310001243429mt:TradePayablesMemberifrs-full:CurrencyRiskMembercurrency:KZT2022-12-310001243429ifrs-full:CurrencyRiskMembercurrency:ZARifrs-full:TradeReceivablesMember2022-12-310001243429mt:TradePayablesMemberifrs-full:CurrencyRiskMembercurrency:ZAR2022-12-310001243429ifrs-full:CurrencyRiskMembercurrency:MXNifrs-full:TradeReceivablesMember2022-12-310001243429mt:TradePayablesMemberifrs-full:CurrencyRiskMembercurrency:MXN2022-12-310001243429currency:UAHifrs-full:CurrencyRiskMemberifrs-full:TradeReceivablesMember2022-12-310001243429mt:TradePayablesMembercurrency:UAHifrs-full:CurrencyRiskMember2022-12-310001243429ifrs-full:CurrencyRiskMembercurrency:PLNifrs-full:TradeReceivablesMember2022-12-310001243429mt:TradePayablesMemberifrs-full:CurrencyRiskMembercurrency:PLN2022-12-310001243429ifrs-full:CurrencyRiskMemberifrs-full:TradeReceivablesMembercurrency:ARS2022-12-310001243429mt:TradePayablesMemberifrs-full:CurrencyRiskMembercurrency:ARS2022-12-310001243429ifrs-full:CurrencyRiskMemberifrs-full:TradeReceivablesMembermt:OtherCurrenciesMember2022-12-310001243429mt:TradePayablesMemberifrs-full:CurrencyRiskMembermt:OtherCurrenciesMember2022-12-310001243429ifrs-full:CurrencyRiskMemberifrs-full:TradeReceivablesMember2022-12-310001243429mt:TradePayablesMemberifrs-full:CurrencyRiskMember2022-12-310001243429ifrs-full:CurrencyRiskMembercurrency:EUR2022-12-310001243429ifrs-full:CurrencyRiskMembercurrency:BRL2022-12-310001243429currency:CADifrs-full:CurrencyRiskMember2022-12-310001243429ifrs-full:CurrencyRiskMembercurrency:KZT2022-12-310001243429ifrs-full:CurrencyRiskMembercurrency:ZAR2022-12-310001243429ifrs-full:CurrencyRiskMembercurrency:MXN2022-12-310001243429currency:UAHifrs-full:CurrencyRiskMember2022-12-310001243429ifrs-full:CurrencyRiskMembercurrency:PLN2022-12-310001243429ifrs-full:CurrencyRiskMembercurrency:ARS2022-12-310001243429ifrs-full:LiquidityRiskMember2022-12-310001243429ifrs-full:NotLaterThanOneYearMemberifrs-full:LiquidityRiskMember2022-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMemberifrs-full:LiquidityRiskMember2022-12-310001243429ifrs-full:LiquidityRiskMemberifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember2022-12-310001243429ifrs-full:LaterThanFiveYearsMemberifrs-full:LiquidityRiskMember2022-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:LiquidityRiskMember2022-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:NotLaterThanOneYearMemberifrs-full:LiquidityRiskMember2022-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMembermt:ForeignExchangeContract1Memberifrs-full:LiquidityRiskMember2022-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:LiquidityRiskMemberifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember2022-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:LaterThanFiveYearsMemberifrs-full:LiquidityRiskMember2022-12-310001243429ifrs-full:LiquidityRiskMembermt:CommodityContract1Member2022-12-310001243429ifrs-full:NotLaterThanOneYearMemberifrs-full:LiquidityRiskMembermt:CommodityContract1Member2022-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMemberifrs-full:LiquidityRiskMembermt:CommodityContract1Member2022-12-310001243429ifrs-full:LiquidityRiskMembermt:CommodityContract1Memberifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember2022-12-310001243429ifrs-full:LaterThanFiveYearsMemberifrs-full:LiquidityRiskMembermt:CommodityContract1Member2022-12-310001243429ifrs-full:LiquidityRiskMember2021-12-310001243429ifrs-full:NotLaterThanOneYearMemberifrs-full:LiquidityRiskMember2021-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMemberifrs-full:LiquidityRiskMember2021-12-310001243429ifrs-full:LiquidityRiskMemberifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember2021-12-310001243429ifrs-full:LaterThanFiveYearsMemberifrs-full:LiquidityRiskMember2021-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:LiquidityRiskMember2021-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:NotLaterThanOneYearMemberifrs-full:LiquidityRiskMember2021-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMembermt:ForeignExchangeContract1Memberifrs-full:LiquidityRiskMember2021-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:LiquidityRiskMemberifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember2021-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:LaterThanFiveYearsMemberifrs-full:LiquidityRiskMember2021-12-310001243429ifrs-full:LiquidityRiskMembermt:CommodityContract1Member2021-12-310001243429ifrs-full:NotLaterThanOneYearMemberifrs-full:LiquidityRiskMembermt:CommodityContract1Member2021-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMemberifrs-full:LiquidityRiskMembermt:CommodityContract1Member2021-12-310001243429ifrs-full:LiquidityRiskMembermt:CommodityContract1Memberifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember2021-12-310001243429ifrs-full:LaterThanFiveYearsMemberifrs-full:LiquidityRiskMembermt:CommodityContract1Member2021-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:NotLaterThanThreeMonthsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMemberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:ForeignExchangeContract1Membermt:LaterThanTwoYearsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:NotLaterThanThreeMonthsMembermt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:CommodityContract1Memberifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMembermt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMembermt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:CommodityContract1Membermt:LaterThanTwoYearsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:EmissionRightsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:NotLaterThanThreeMonthsMembermt:EmissionRightsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMembermt:EmissionRightsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMembermt:EmissionRightsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMembermt:EmissionRightsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:LaterThanTwoYearsMembermt:EmissionRightsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:NotLaterThanThreeMonthsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMemberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:LaterThanTwoYearsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2021-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:NotLaterThanThreeMonthsMemberifrs-full:CashFlowHedgesMember2021-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:CashFlowHedgesMember2021-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMemberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2021-12-310001243429mt:ForeignExchangeContract1Membermt:LaterThanTwoYearsMemberifrs-full:CashFlowHedgesMember2021-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:NotLaterThanThreeMonthsMembermt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2021-12-310001243429mt:CommodityContract1Memberifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMembermt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMembermt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2021-12-310001243429mt:CommodityContract1Membermt:LaterThanTwoYearsMemberifrs-full:CashFlowHedgesMember2021-12-310001243429mt:EmissionRightsMemberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:NotLaterThanThreeMonthsMembermt:EmissionRightsMemberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMembermt:EmissionRightsMemberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMembermt:EmissionRightsMemberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMembermt:EmissionRightsMemberifrs-full:CashFlowHedgesMember2021-12-310001243429mt:LaterThanTwoYearsMembermt:EmissionRightsMemberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:NotLaterThanThreeMonthsMemberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMemberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMemberifrs-full:CashFlowHedgesMember2021-12-310001243429mt:LaterThanTwoYearsMemberifrs-full:CashFlowHedgesMember2021-12-310001243429mt:DerivativeContractEquityMethodInvestmentsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:DerivativeContractEquityMethodInvestmentsMemberifrs-full:CashFlowHedgesMember2021-12-310001243429mt:DerivativeContractEquityMethodInvestmentsMemberifrs-full:CashFlowHedgesMember2020-12-310001243429ifrs-full:CurrencyRiskMembermt:ForeignExchangeContract1Membermt:PrepaymentsAndOtherCurrentAssetsAndAccruedExpensesAndOtherLiabilitiesMemberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:OtherAssetsAndOtherLongTermObligationsMemberifrs-full:CurrencyRiskMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:CommodityPriceRiskMembermt:CommodityContract1Membermt:PrepaymentsAndOtherCurrentAssetsAndAccruedExpensesAndOtherLiabilitiesMemberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:OtherAssetsAndOtherLongTermObligationsMemberifrs-full:CommodityPriceRiskMembermt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:CommodityPriceRiskMembermt:EmissionRightsMembermt:PrepaymentsAndOtherCurrentAssetsAndAccruedExpensesAndOtherLiabilitiesMemberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:OtherHedgesMember2022-12-310001243429ifrs-full:CurrencyRiskMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:CurrencyRiskMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2022-01-012022-12-310001243429ifrs-full:CurrencyRiskMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:CommodityPriceRiskMembermt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:CommodityPriceRiskMembermt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2022-01-012022-12-310001243429ifrs-full:CommodityPriceRiskMembermt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:CommodityPriceRiskMembermt:EmissionRightsMemberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:CommodityPriceRiskMembermt:EmissionRightsMemberifrs-full:CashFlowHedgesMember2022-01-012022-12-310001243429ifrs-full:CommodityPriceRiskMembermt:EmissionRightsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:CashFlowHedgesMember2022-01-012022-12-310001243429ifrs-full:CurrencyRiskMembermt:ForeignExchangeContract1Membermt:PrepaymentsAndOtherCurrentAssetsAndAccruedExpensesAndOtherLiabilitiesMemberifrs-full:CashFlowHedgesMember2021-12-310001243429mt:OtherAssetsAndOtherLongTermObligationsMemberifrs-full:CurrencyRiskMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:CommodityPriceRiskMembermt:CommodityContract1Membermt:PrepaymentsAndOtherCurrentAssetsAndAccruedExpensesAndOtherLiabilitiesMemberifrs-full:CashFlowHedgesMember2021-12-310001243429mt:OtherAssetsAndOtherLongTermObligationsMemberifrs-full:CommodityPriceRiskMembermt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:CommodityPriceRiskMembermt:EmissionRightsMembermt:PrepaymentsAndOtherCurrentAssetsAndAccruedExpensesAndOtherLiabilitiesMemberifrs-full:CashFlowHedgesMember2021-12-310001243429mt:OtherHedgesMember2021-12-310001243429ifrs-full:CurrencyRiskMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2020-12-310001243429ifrs-full:CurrencyRiskMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2021-01-012021-12-310001243429ifrs-full:CommodityPriceRiskMembermt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2020-12-310001243429ifrs-full:CommodityPriceRiskMembermt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2021-01-012021-12-310001243429ifrs-full:CommodityPriceRiskMembermt:EmissionRightsMemberifrs-full:CashFlowHedgesMember2020-12-310001243429ifrs-full:CommodityPriceRiskMembermt:EmissionRightsMemberifrs-full:CashFlowHedgesMember2021-01-012021-12-310001243429ifrs-full:CashFlowHedgesMember2020-12-310001243429ifrs-full:CashFlowHedgesMember2021-01-012021-12-310001243429mt:CrossCurrencySwap375NotionalAmountMaturityJanuary2016Memberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2022-12-310001243429mt:CrossCurrencySwap375NotionalAmountMaturityJanuary2016Memberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2022-12-312022-12-310001243429mt:CrossCurrencySwap500NotionalAmountMaturityMarch2021Memberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2022-12-310001243429mt:CrossCurrencySwap500NotionalAmountMaturityMarch2021Memberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2022-12-312022-12-310001243429mt:CrossCurrencySwap500NotionalAmountMaturityJuly2019Memberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2022-12-310001243429mt:CrossCurrencySwap500NotionalAmountMaturityJuly2019Memberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2022-12-312022-12-310001243429mt:CrossCurrencySwap100NotionalAmountMaturityJune2018Memberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2022-12-310001243429mt:CrossCurrencySwap100NotionalAmountMaturityJune2018Memberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2022-12-312022-12-310001243429mt:CrossCurrencySwap200NotionalAmountMaturityNovember2019Memberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2022-12-310001243429mt:CrossCurrencySwap200NotionalAmountMaturityNovember2019Memberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2022-12-312022-12-310001243429ifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2022-12-312022-12-310001243429mt:CrossCurrencySwap500NotionalAmountMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2020-03-250001243429mt:CrossCurrencySwap500NotionalAmountMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2020-03-260001243429mt:CrossCurrencySwap500NotionalAmountMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2015-05-270001243429mt:CrossCurrencySwap500NotionalAmountMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2022-01-012022-12-310001243429ifrs-full:CurrencyRiskMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMembermt:CrossCurrencySwapMember2022-12-310001243429ifrs-full:CurrencyRiskMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMembermt:CrossCurrencySwapMember2022-01-012022-12-310001243429ifrs-full:CurrencyRiskMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMembermt:EURDebtMember2022-12-310001243429ifrs-full:CurrencyRiskMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMembermt:EURDebtMember2022-01-012022-12-310001243429ifrs-full:CurrencyRiskMembermt:CrossCurrencySwap2018TotalMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2021-12-310001243429ifrs-full:CurrencyRiskMembermt:CrossCurrencySwap2018TotalMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2021-01-012021-12-310001243429ifrs-full:CurrencyRiskMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMembermt:EURDebtMember2021-12-310001243429ifrs-full:CurrencyRiskMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMembermt:EURDebtMember2021-01-012021-12-310001243429mt:BaseMetalsMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429mt:BaseMetalsMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429mt:FreightMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429mt:FreightMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429mt:EnergyOilGasElectricityMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429mt:EnergyOilGasElectricityMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429mt:EmissionRightsMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429mt:EmissionRightsMemberifrs-full:Level2OfFairValueHierarchyMember2021-12-310001243429mt:EmissionRightsMember2022-12-310001243429mt:EmissionRightsMember2021-12-310001243429ifrs-full:CurrencyRiskMember2022-01-012022-12-310001243429ifrs-full:CurrencyRiskMember2021-01-012021-12-310001243429ifrs-full:FloatingInterestRateMemberifrs-full:InterestRateRiskMember2022-01-012022-12-310001243429ifrs-full:FloatingInterestRateMemberifrs-full:InterestRateRiskMember2021-01-012021-12-310001243429ifrs-full:InterestRateRiskMember2022-01-012022-12-310001243429ifrs-full:CommodityPriceRiskMember2022-01-012022-12-310001243429ifrs-full:CommodityPriceRiskMembermt:BaseMetalsMember2022-01-012022-12-310001243429mt:IronOreMemberifrs-full:CommodityPriceRiskMember2022-01-012022-12-310001243429ifrs-full:CommodityPriceRiskMembermt:FreightMember2022-01-012022-12-310001243429ifrs-full:CommodityPriceRiskMembermt:EmissionRightsMember2022-01-012022-12-310001243429ifrs-full:CommodityPriceRiskMembermt:EnergyMember2022-01-012022-12-310001243429ifrs-full:CommodityPriceRiskMember2021-01-012021-12-310001243429ifrs-full:CommodityPriceRiskMembermt:BaseMetalsMember2021-01-012021-12-310001243429mt:IronOreMemberifrs-full:CommodityPriceRiskMember2021-01-012021-12-310001243429ifrs-full:CommodityPriceRiskMembermt:FreightMember2021-01-012021-12-310001243429ifrs-full:CommodityPriceRiskMembermt:EmissionRightsMember2021-01-012021-12-310001243429ifrs-full:CommodityPriceRiskMembermt:EnergyMember2021-01-012021-12-310001243429ifrs-full:LandAndBuildingsMember2022-12-310001243429ifrs-full:LandAndBuildingsMember2021-12-310001243429mt:MachineryEquipmentAndOtherMember2022-12-310001243429mt:MachineryEquipmentAndOtherMember2021-12-310001243429ifrs-full:LandAndBuildingsMember2022-01-012022-12-310001243429ifrs-full:LandAndBuildingsMember2021-01-012021-12-310001243429mt:MachineryEquipmentAndOtherMember2022-01-012022-12-310001243429mt:MachineryEquipmentAndOtherMember2021-01-012021-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember2022-12-310001243429ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember2022-12-310001243429ifrs-full:NotLaterThanOneYearMember2021-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember2021-12-310001243429ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember2021-12-310001243429ifrs-full:LaterThanFiveYearsMember2021-12-310001243429ifrs-full:NotLaterThanOneYearMember2022-01-012022-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember2022-01-012022-12-310001243429ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember2022-01-012022-12-310001243429ifrs-full:LaterThanFiveYearsMember2022-01-012022-12-310001243429ifrs-full:NotLaterThanOneYearMember2021-01-012021-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember2021-01-012021-12-310001243429ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember2021-01-012021-12-310001243429ifrs-full:LaterThanFiveYearsMember2021-01-012021-12-31mt:employee0001243429ifrs-full:PensionDefinedBenefitPlansMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMember2021-12-310001243429mt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429mt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429mt:TerminationBenefitsMember2022-12-310001243429mt:TerminationBenefitsMember2021-12-310001243429mt:PensionPlanOtherPostemploymentAndTerminationBenefitPlansMember2022-12-310001243429mt:PensionPlanOtherPostemploymentAndTerminationBenefitPlansMember2021-12-310001243429mt:SocialPlanProvisionMember2022-12-310001243429mt:SocialPlanProvisionMember2021-12-310001243429country:ES2022-01-012022-12-310001243429country:CAmt:CollectiveLaborAgreementMember2014-07-012014-09-300001243429country:CAmt:CollectiveLaborAgreementMember2016-02-012016-02-280001243429country:CAmt:FullyFundedPensionPlansMember2020-12-310001243429country:CAmt:FullyFundedPensionPlansMember2022-12-310001243429country:BE2015-12-012015-12-310001243429country:BE2016-01-012021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:CAifrs-full:PresentValueOfDefinedBenefitObligationMember2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:BRifrs-full:PresentValueOfDefinedBenefitObligationMember2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Memberifrs-full:PresentValueOfDefinedBenefitObligationMember2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:CAifrs-full:PresentValueOfDefinedBenefitObligationMember2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:BRifrs-full:PresentValueOfDefinedBenefitObligationMember2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Memberifrs-full:PresentValueOfDefinedBenefitObligationMember2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:CAifrs-full:PresentValueOfDefinedBenefitObligationMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:BRifrs-full:PresentValueOfDefinedBenefitObligationMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Memberifrs-full:PresentValueOfDefinedBenefitObligationMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2022-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMember2021-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembercountry:CA2021-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembercountry:BR2021-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2021-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2021-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMember2022-01-012022-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembercountry:CA2022-01-012022-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembercountry:BR2022-01-012022-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2022-01-012022-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2022-01-012022-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMember2022-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembercountry:CA2022-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembercountry:BR2022-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2022-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:CA2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:BR2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:CA2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:BR2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMember2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:CA2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:BR2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2020-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:CAifrs-full:PresentValueOfDefinedBenefitObligationMember2020-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:BRifrs-full:PresentValueOfDefinedBenefitObligationMember2020-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Memberifrs-full:PresentValueOfDefinedBenefitObligationMember2020-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2020-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2021-01-012021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:CAifrs-full:PresentValueOfDefinedBenefitObligationMember2021-01-012021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:BRifrs-full:PresentValueOfDefinedBenefitObligationMember2021-01-012021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Memberifrs-full:PresentValueOfDefinedBenefitObligationMember2021-01-012021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2021-01-012021-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMember2020-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembercountry:CA2020-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembercountry:BR2020-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2020-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2020-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMember2021-01-012021-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembercountry:CA2021-01-012021-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembercountry:BR2021-01-012021-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2021-01-012021-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2021-01-012021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMember2020-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:CA2020-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:BR2020-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2020-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2020-12-310001243429ifrs-full:PensionDefinedBenefitPlansMember2021-01-012021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:CA2021-01-012021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:BR2021-01-012021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2021-01-012021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2021-01-012021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMember2020-01-012020-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:CA2020-01-012020-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:BR2020-01-012020-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2020-01-012020-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2020-01-012020-12-310001243429country:PLmt:OtherPostEmploymentBenefitPlanMember2021-04-012021-04-300001243429country:PLmt:OtherPostEmploymentBenefitPlanMember2021-06-012021-06-300001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429country:CAifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429mt:Europe1Memberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429mt:OtherRegionsMemberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2022-01-012022-12-310001243429country:CAifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2022-01-012022-12-310001243429mt:Europe1Memberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2022-01-012022-12-310001243429mt:OtherRegionsMemberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2022-01-012022-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429country:CAifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429mt:Europe1Memberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429mt:OtherRegionsMemberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:PlanAssetsMembermt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429ifrs-full:PlanAssetsMembercountry:CAmt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429ifrs-full:PlanAssetsMembermt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429ifrs-full:PlanAssetsMembermt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429ifrs-full:PlanAssetsMembermt:OtherPostEmploymentBenefitPlanMember2022-01-012022-12-310001243429ifrs-full:PlanAssetsMembercountry:CAmt:OtherPostEmploymentBenefitPlanMember2022-01-012022-12-310001243429ifrs-full:PlanAssetsMembermt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2022-01-012022-12-310001243429ifrs-full:PlanAssetsMembermt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2022-01-012022-12-310001243429ifrs-full:PlanAssetsMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:PlanAssetsMembercountry:CAmt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:PlanAssetsMembermt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:PlanAssetsMembermt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429country:CAmt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429mt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429mt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2020-12-310001243429country:CAifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2020-12-310001243429mt:Europe1Memberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2020-12-310001243429mt:OtherRegionsMemberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2020-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2021-01-012021-12-310001243429country:CAifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2021-01-012021-12-310001243429mt:Europe1Memberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2021-01-012021-12-310001243429mt:OtherRegionsMemberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2021-01-012021-12-310001243429ifrs-full:PlanAssetsMembermt:OtherPostEmploymentBenefitPlanMember2020-12-310001243429ifrs-full:PlanAssetsMembercountry:CAmt:OtherPostEmploymentBenefitPlanMember2020-12-310001243429ifrs-full:PlanAssetsMembermt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2020-12-310001243429ifrs-full:PlanAssetsMembermt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2020-12-310001243429ifrs-full:PlanAssetsMembermt:OtherPostEmploymentBenefitPlanMember2021-01-012021-12-310001243429ifrs-full:PlanAssetsMembercountry:CAmt:OtherPostEmploymentBenefitPlanMember2021-01-012021-12-310001243429ifrs-full:PlanAssetsMembermt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2021-01-012021-12-310001243429ifrs-full:PlanAssetsMembermt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2021-01-012021-12-310001243429country:CAmt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429mt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429mt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429mt:OtherPostEmploymentBenefitPlanMember2022-01-012022-12-310001243429country:CAmt:OtherPostEmploymentBenefitPlanMember2022-01-012022-12-310001243429mt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2022-01-012022-12-310001243429mt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2022-01-012022-12-310001243429mt:OtherPostEmploymentBenefitPlanMember2021-01-012021-12-310001243429country:CAmt:OtherPostEmploymentBenefitPlanMember2021-01-012021-12-310001243429mt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2021-01-012021-12-310001243429mt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2021-01-012021-12-310001243429mt:OtherPostEmploymentBenefitPlanMember2020-01-012020-12-310001243429country:CAmt:OtherPostEmploymentBenefitPlanMember2020-01-012020-12-310001243429mt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2020-01-012020-12-310001243429mt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2020-01-012020-12-310001243429ifrs-full:CostOfSalesMember2022-01-012022-12-310001243429ifrs-full:CostOfSalesMember2021-01-012021-12-310001243429ifrs-full:CostOfSalesMember2020-01-012020-12-310001243429ifrs-full:SellingGeneralAndAdministrativeExpenseMember2022-01-012022-12-310001243429ifrs-full:SellingGeneralAndAdministrativeExpenseMember2021-01-012021-12-310001243429ifrs-full:SellingGeneralAndAdministrativeExpenseMember2020-01-012020-12-310001243429mt:FinancingCostsMember2022-01-012022-12-310001243429mt:FinancingCostsMember2021-01-012021-12-310001243429mt:FinancingCostsMember2020-01-012020-12-310001243429mt:Europe1Member2022-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembercountry:CA2022-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembercountry:BR2022-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:Europe1Member2022-12-310001243429country:CAifrs-full:Level2And3OfFairValueHierarchyMember2022-12-310001243429country:BRifrs-full:Level2And3OfFairValueHierarchyMember2022-12-310001243429mt:Europe1Memberifrs-full:Level2And3OfFairValueHierarchyMember2022-12-310001243429mt:Europe1Member2021-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembercountry:CA2021-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembercountry:BR2021-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:Europe1Member2021-12-310001243429country:CAifrs-full:Level2And3OfFairValueHierarchyMember2021-12-310001243429country:BRifrs-full:Level2And3OfFairValueHierarchyMember2021-12-310001243429mt:Europe1Memberifrs-full:Level2And3OfFairValueHierarchyMember2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:BottomOfRangeMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:TopOfRangeMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:BottomOfRangeMember2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:TopOfRangeMember2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:BottomOfRangeMember2020-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:TopOfRangeMember2020-12-310001243429ifrs-full:BottomOfRangeMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:TopOfRangeMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:BottomOfRangeMembermt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429ifrs-full:TopOfRangeMembermt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429ifrs-full:BottomOfRangeMembermt:OtherPostEmploymentBenefitPlanMember2020-12-310001243429ifrs-full:TopOfRangeMembermt:OtherPostEmploymentBenefitPlanMember2020-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:WeightedAverageMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:WeightedAverageMember2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:WeightedAverageMember2020-12-310001243429ifrs-full:WeightedAverageMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:WeightedAverageMembermt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429ifrs-full:WeightedAverageMembermt:OtherPostEmploymentBenefitPlanMember2020-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:ActuarialAssumptionOfDiscountRatesMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:ActuarialAssumptionOfDiscountRatesMembersrt:ScenarioForecastMember2023-01-012023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMembersrt:ScenarioForecastMember2023-01-012023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:ActuarialAssumptionOfMortalityRatesMember2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembersrt:ScenarioForecastMemberifrs-full:ActuarialAssumptionOfMortalityRatesMember2023-01-012023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:ActuarialAssumptionOfMortalityRatesMember2022-12-310001243429ifrs-full:ActuarialAssumptionOfDiscountRatesMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:ActuarialAssumptionOfDiscountRatesMembersrt:ScenarioForecastMembermt:OtherPostEmploymentBenefitPlanMember2023-01-012023-12-310001243429ifrs-full:ActuarialAssumptionOfMedicalCostTrendRatesMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:ActuarialAssumptionOfMedicalCostTrendRatesMembersrt:ScenarioForecastMembermt:OtherPostEmploymentBenefitPlanMember2023-01-012023-12-310001243429ifrs-full:ActuarialAssumptionOfMortalityRatesMembermt:OtherPostEmploymentBenefitPlanMember2022-01-012022-12-310001243429srt:ScenarioForecastMemberifrs-full:ActuarialAssumptionOfMortalityRatesMembermt:OtherPostEmploymentBenefitPlanMember2023-01-012023-12-310001243429ifrs-full:ActuarialAssumptionOfMortalityRatesMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ArcelorMittalEquityIncentivePlanMember2022-01-012022-12-310001243429mt:RestrictedShareUnitsRSUMembermt:ArcelorMittalEquityIncentivePlanMember2022-01-012022-12-310001243429mt:ExecutiveOfficePlanMemberifrs-full:TopOfRangeMembermt:RestrictedShareUnitsRSUAndPerformanceShareUnitsPSUMember2020-06-130001243429mt:ExecutiveOfficePlanMemberifrs-full:TopOfRangeMembermt:RestrictedShareUnitsRSUAndPerformanceShareUnitsPSUMember2021-06-080001243429mt:ExecutiveOfficePlanMemberifrs-full:TopOfRangeMembermt:RestrictedShareUnitsRSUAndPerformanceShareUnitsPSUMember2022-05-040001243429mt:RestrictedShareUnitsRSUMembermt:ArcelorMittalEquityIncentivePlanMembermt:SpecialGrantMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMember2022-01-012022-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ChiefExecutiveOfficer1Membermt:ExecutiveOfficePlanMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveCharimanMembermt:ExecutiveOfficePlanMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedOnTSRComparedToPeerGroupMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnEPSComparedToPeerGroupMembermt:ExecutiveOfficePlanMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPeerGroupTargetLevelMembermt:ExecutiveOfficePlanMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedOnTSRComparedToPeerGroupStretchLevelMember2022-01-012022-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnTSRComparedToPeerGroupMember2022-01-012022-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPeerGroupTargetLevelMember2022-01-012022-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnTSRComparedToPeerGroupStretchLevelMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPerformanceIndexThresholdLevelMembermt:ExecutiveOfficePlanMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPerformanceIndexTargetLevelMembermt:ExecutiveOfficePlanMember2022-01-012022-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnGapToCompetitionMember2022-01-012022-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedonGapToCompetitionTargetLevelMember2022-01-012022-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnGapToCompetitionStretchLevelMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGMembermt:ESGMembermt:ExecutiveOfficePlanMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGMembermt:ExecutiveOfficePlanMembermt:HSMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGMembermt:ExecutiveOfficePlanMembermt:ClimateActionMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGMembermt:DIMembermt:ExecutiveOfficePlanMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGMembermt:ExecutiveOfficePlanMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedOnESGTargetLevelMember2022-01-012022-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGMembermt:ESGMember2022-01-012022-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGMembermt:HSMember2022-01-012022-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGMembermt:ClimateActionMember2022-01-012022-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGMembermt:DIMember2022-01-012022-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGTargetLevelMember2022-01-012022-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGStretchLevelMember2022-01-012022-12-310001243429mt:ExecutiveOfficersPlanMembermt:RestrictedShareUnitsRSUMembermt:VestingBasedOnVestingPeriodPeriodOneMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMember2019-01-012019-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMember2019-01-012019-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveCharimanMembermt:ExecutiveOfficePlanMember2019-01-012019-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ChiefExecutiveOfficer1Membermt:ExecutiveOfficePlanMember2019-01-012019-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedonTSRComparedToPeerGroupThresholdLevelMember2019-01-012019-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonEPSComparedToPeerGroupThresholdLevelMembermt:ExecutiveOfficePlanMember2019-01-012019-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedonEPSComparedToPeerGroupTargetLevelMember2019-01-012019-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPeerGroupTargetLevelMembermt:ExecutiveOfficePlanMember2019-01-012019-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnPerformanceOfROCETargetLevelMember2019-01-012019-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPerformanceIndexTargetLevelMembermt:ExecutiveOfficePlanMember2019-01-012019-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedonGapToCompetitionTargetLevelMember2019-01-012019-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPerformanceIndexThresholdLevelMembermt:ExecutiveOfficePlanMember2019-01-012019-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMember2020-01-012020-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ChiefExecutiveOfficer1Membermt:ExecutiveOfficePlanMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveCharimanMembermt:ExecutiveOfficePlanMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedonTSRComparedToPeerGroupThresholdLevelMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonEPSComparedToPeerGroupThresholdLevelMembermt:ExecutiveOfficePlanMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedonEPSComparedToPeerGroupTargetLevelMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPeerGroupTargetLevelMembermt:ExecutiveOfficePlanMember2020-01-012020-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPeerGroupThresholdLevelMember2020-01-012020-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedonEPSComparedToPeerGroupThresholdLevelMember2020-01-012020-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedonEPSComparedToPeerGroupTargetLevelMember2020-01-012020-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPeerGroupTargetLevelMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPerformanceIndexTargetLevelMembermt:ExecutiveOfficePlanMember2020-01-012020-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedonGapToCompetitionTargetLevelMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPerformanceIndexThresholdLevelMembermt:ExecutiveOfficePlanMember2020-01-012020-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnGapToCompetitionThresholdLevelMember2020-01-012020-12-310001243429mt:ExecutiveOfficersPlanMembermt:RestrictedShareUnitsRSUMembermt:VestingBasedOnVestingPeriodPeriodOneMember2020-01-012020-12-310001243429mt:VestingBasedOnVestingPeriodPeriodTwoMembermt:ExecutiveOfficersPlanMembermt:RestrictedShareUnitsRSUMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMember2021-01-012021-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveCharimanMembermt:ExecutiveOfficePlanMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ChiefExecutiveOfficer1Membermt:ExecutiveOfficePlanMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedOnTSRComparedToPeerGroupMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnEPSComparedToPeerGroupMembermt:ExecutiveOfficePlanMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonEPSComparedToPeerGroupThresholdLevelMembermt:ExecutiveOfficePlanMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedonTSRComparedToPeerGroupThresholdLevelMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPeerGroupTargetLevelMembermt:ExecutiveOfficePlanMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedonEPSComparedToPeerGroupTargetLevelMember2021-01-012021-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnTSRComparedToPeerGroupMember2021-01-012021-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPeerGroupTargetLevelMember2021-01-012021-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnTSRComparedToPeerGroupStretchLevelMember2021-01-012021-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnGapToCompetitionMember2021-01-012021-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedonGapToCompetitionTargetLevelMember2021-01-012021-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnGapToCompetitionStretchLevelMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGMembermt:ExecutiveOfficePlanMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedOnESGTargetLevelMember2021-01-012021-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGMember2022-01-012022-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGTargetLevelMember2021-01-012021-12-310001243429mt:ExecutiveOfficersPlanMembermt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGStretchLevelMember2021-01-012021-12-310001243429mt:ExecutiveOfficersPlanMembermt:RestrictedShareUnitsRSUMembermt:VestingBasedOnVestingPeriodPeriodOneMember2021-01-012021-12-310001243429mt:VestingBasedOnVestingPeriodPeriodTwoMembermt:ExecutiveOfficersPlanMembermt:RestrictedShareUnitsRSUMember2021-01-012021-12-310001243429mt:GrantDateDecember132022MaturityDueDecember2025Membermt:RestrictedShareUnitsRSUMember2022-12-132022-12-130001243429mt:GrantDateDecember132022MaturityDueDecember2025Membermt:RestrictedShareUnitsRSUMember2021-12-162021-12-16mt:beneficiary0001243429mt:GrantDateDecember132022MaturityDueDecember2025Membermt:RestrictedShareUnitsRSUMember2022-12-310001243429mt:GrantDateDecember132022MaturityDueDecember2025Membermt:RestrictedShareUnitsRSUMember2022-12-312022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:GrantDateDecember132022MaturityDueJanuary2026Member2022-12-132022-12-130001243429mt:PerformanceShareUnitsPSUMembermt:GrantDateDecember132022MaturityDueJanuary2026Member2021-12-162021-12-160001243429mt:PerformanceShareUnitsPSUMembermt:GrantDateDecember132022MaturityDueJanuary2026Member2022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:GrantDateDecember132022MaturityDueJanuary2026Member2022-12-312022-12-310001243429mt:GrantDateDecember132022MaturityDueJanuary2026Membermt:ExecutiveOfficePlanMember2022-12-132022-12-130001243429mt:GrantDateDecember132022MaturityDueJanuary2026Membermt:ExecutiveOfficePlanMember2021-12-162021-12-160001243429mt:GrantDateDecember132022MaturityDueJanuary2026Membermt:ExecutiveOfficePlanMember2022-12-310001243429mt:GrantDateDecember132022MaturityDueJanuary2026Membermt:ExecutiveOfficePlanMember2022-12-312022-12-310001243429mt:RestrictedShareUnitsRSUMembermt:GrantDateDecember162021MaturityDueDecember2024Member2021-12-162021-12-160001243429mt:RestrictedShareUnitsRSUMembermt:GrantDateDecember162021MaturityDueDecember2024Member2022-12-310001243429mt:RestrictedShareUnitsRSUMembermt:GrantDateDecember162021MaturityDueDecember2024Member2022-12-312022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:GrantDateDecember162021MaturityDueJanuary2025Member2021-12-162021-12-160001243429mt:PerformanceShareUnitsPSUMembermt:GrantDateDecember162021MaturityDueJanuary2025Member2022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:GrantDateDecember162021MaturityDueJanuary2025Member2022-12-312022-12-310001243429mt:GrantDateDecember162021MaturityDueJanuary2025Membermt:ExecutiveOfficePlanMember2021-12-162021-12-160001243429mt:GrantDateDecember162021MaturityDueJanuary2025Membermt:ExecutiveOfficePlanMember2022-12-310001243429mt:GrantDateDecember162021MaturityDueJanuary2025Membermt:ExecutiveOfficePlanMember2022-12-312022-12-310001243429mt:GrantDateMay72021MaturityDueMay2023Membermt:RestrictedShareUnitsRSUMember2021-05-072021-05-070001243429mt:GrantDateMay72021MaturityDueMay2023Membermt:RestrictedShareUnitsRSUMember2022-12-310001243429mt:GrantDateMay72021MaturityDueMay2023Membermt:RestrictedShareUnitsRSUMember2022-12-312022-12-310001243429mt:RestrictedShareUnitsRSUMembermt:GrantDateDecember142020MaturityDueDecember2023Member2020-12-142020-12-140001243429mt:RestrictedShareUnitsRSUMembermt:GrantDateDecember142020MaturityDueDecember2023Member2022-12-310001243429mt:RestrictedShareUnitsRSUMembermt:GrantDateDecember142020MaturityDueDecember2023Member2022-12-312022-12-310001243429mt:GrantDateDecember142020MaturityDueJanuary12024Membermt:PerformanceShareUnitsPSUMember2020-12-142020-12-140001243429mt:GrantDateDecember142020MaturityDueJanuary12024Membermt:PerformanceShareUnitsPSUMember2022-12-310001243429mt:GrantDateDecember142020MaturityDueJanuary12024Membermt:PerformanceShareUnitsPSUMember2022-12-312022-12-310001243429mt:GrantDateDecember142020MaturityDueJanuary12024Membermt:ExecutiveOfficePlanMember2020-12-142020-12-140001243429mt:GrantDateDecember142020MaturityDueJanuary12024Membermt:ExecutiveOfficePlanMember2022-12-310001243429mt:GrantDateDecember142020MaturityDueJanuary12024Membermt:ExecutiveOfficePlanMember2022-12-312022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:GrantdateDecember162019MaturitydueJanuary12023Member2019-12-162019-12-160001243429mt:PerformanceShareUnitsPSUMembermt:GrantdateDecember162019MaturitydueJanuary12023Member2022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:GrantdateDecember162019MaturitydueJanuary12023Member2022-12-312022-12-310001243429mt:GrantdateDecember162019MaturitydueJanuary12023Membermt:ExecutiveOfficePlanMember2019-12-162019-12-160001243429mt:GrantdateDecember162019MaturitydueJanuary12023Membermt:ExecutiveOfficePlanMember2022-12-310001243429mt:GrantdateDecember162019MaturitydueJanuary12023Membermt:ExecutiveOfficePlanMember2022-12-312022-12-3100012434292016-07-012022-12-310001243429ifrs-full:BottomOfRangeMember2016-07-012022-12-310001243429ifrs-full:TopOfRangeMember2016-07-012022-12-3100012434292022-12-312022-12-310001243429mt:PerformanceShareUnitsPSUMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMember2020-01-012020-12-310001243429mt:RestrictedShareUnitsRSUMember2019-12-310001243429mt:PerformanceShareUnitsPSUAndExecutiveOfficeMember2019-12-310001243429mt:RestrictedShareUnitsRSUMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUAndExecutiveOfficeMember2020-01-012020-12-310001243429mt:RestrictedShareUnitsRSUMember2020-12-310001243429mt:PerformanceShareUnitsPSUAndExecutiveOfficeMember2020-12-310001243429mt:RestrictedShareUnitsRSUMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUAndExecutiveOfficeMember2021-01-012021-12-310001243429mt:RestrictedShareUnitsRSUMember2021-12-310001243429mt:PerformanceShareUnitsPSUAndExecutiveOfficeMember2021-12-310001243429mt:RestrictedShareUnitsRSUMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUAndExecutiveOfficeMember2022-01-012022-12-310001243429mt:RestrictedShareUnitsRSUMember2022-12-310001243429mt:PerformanceShareUnitsPSUAndExecutiveOfficeMember2022-12-310001243429ifrs-full:OtherEnvironmentRelatedProvisionMember2021-12-310001243429ifrs-full:OtherEnvironmentRelatedProvisionMember2022-01-012022-12-310001243429ifrs-full:OtherEnvironmentRelatedProvisionMember2022-12-310001243429mt:EmissionRightsMember2021-12-310001243429mt:EmissionRightsMember2022-01-012022-12-310001243429mt:EmissionRightsMember2022-12-310001243429mt:AssetRetirementObligationsMember2021-12-310001243429mt:AssetRetirementObligationsMember2022-01-012022-12-310001243429mt:AssetRetirementObligationsMember2022-12-310001243429ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember2021-12-310001243429ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember2022-01-012022-12-310001243429ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember2022-12-310001243429mt:StaffRelatedObligationsMember2021-12-310001243429mt:StaffRelatedObligationsMember2022-01-012022-12-310001243429mt:StaffRelatedObligationsMember2022-12-310001243429mt:VoluntarySeparationPlansMember2021-12-310001243429mt:VoluntarySeparationPlansMember2022-01-012022-12-310001243429mt:VoluntarySeparationPlansMember2022-12-310001243429ifrs-full:LegalProceedingsProvisionMember2021-12-310001243429ifrs-full:LegalProceedingsProvisionMember2022-01-012022-12-310001243429ifrs-full:LegalProceedingsProvisionMember2022-12-310001243429ifrs-full:ProvisionForTaxesOtherThanIncomeTaxMember2021-12-310001243429ifrs-full:ProvisionForTaxesOtherThanIncomeTaxMember2022-01-012022-12-310001243429ifrs-full:ProvisionForTaxesOtherThanIncomeTaxMember2022-12-310001243429mt:OtherLegalClaimsMember2021-12-310001243429mt:OtherLegalClaimsMember2022-01-012022-12-310001243429mt:OtherLegalClaimsMember2022-12-310001243429ifrs-full:OnerousContractsProvisionMember2021-12-310001243429ifrs-full:OnerousContractsProvisionMember2022-01-012022-12-310001243429ifrs-full:OnerousContractsProvisionMember2022-12-310001243429ifrs-full:MiscellaneousOtherProvisionsMember2021-12-310001243429ifrs-full:MiscellaneousOtherProvisionsMember2022-01-012022-12-310001243429ifrs-full:MiscellaneousOtherProvisionsMember2022-12-310001243429ifrs-full:OtherEnvironmentRelatedProvisionMember2020-12-310001243429ifrs-full:OtherEnvironmentRelatedProvisionMember2021-01-012021-12-310001243429mt:EmissionRightsMember2020-12-310001243429mt:EmissionRightsMember2021-01-012021-12-310001243429mt:AssetRetirementObligationsMember2020-12-310001243429mt:AssetRetirementObligationsMember2021-01-012021-12-310001243429ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember2020-12-310001243429ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember2021-01-012021-12-310001243429mt:StaffRelatedObligationsMember2020-12-310001243429mt:StaffRelatedObligationsMember2021-01-012021-12-310001243429mt:VoluntarySeparationPlansMember2020-12-310001243429mt:VoluntarySeparationPlansMember2021-01-012021-12-310001243429ifrs-full:LegalProceedingsProvisionMember2020-12-310001243429ifrs-full:LegalProceedingsProvisionMember2021-01-012021-12-310001243429ifrs-full:ProvisionForTaxesOtherThanIncomeTaxMember2020-12-310001243429ifrs-full:ProvisionForTaxesOtherThanIncomeTaxMember2021-01-012021-12-310001243429mt:OtherLegalClaimsMember2020-12-310001243429mt:OtherLegalClaimsMember2021-01-012021-12-310001243429ifrs-full:OnerousContractsProvisionMember2020-12-310001243429ifrs-full:OnerousContractsProvisionMember2021-01-012021-12-310001243429ifrs-full:MiscellaneousOtherProvisionsMember2020-12-310001243429ifrs-full:MiscellaneousOtherProvisionsMember2021-01-012021-12-310001243429country:FRifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember