20-F 1 mt-20231231.htm 20-F mt-20231231
00012434292023FYFALSEP10YnonoP3YP3YP3YP3YP3YP3YP1YP3YP3YP3YP2YP3YP3YP3Y0.661.330.200.100.066600012434292023-01-012023-12-310001243429dei:BusinessContactMember2023-01-012023-12-310001243429exch:XNYS2023-01-012023-12-3100012434292023-12-31xbrli:shares00012434292021-01-012021-12-31iso4217:USD00012434292022-01-012022-12-31iso4217:USDxbrli:shares00012434292022-12-310001243429ifrs-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:NoncontrollingInterestsMember2021-12-3100012434292021-12-310001243429ifrs-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:NoncontrollingInterestsMember2022-12-310001243429ifrs-full:RetainedEarningsMember2023-01-012023-12-310001243429ifrs-full:EquityAttributableToOwnersOfParentMember2023-01-012023-12-310001243429ifrs-full:NoncontrollingInterestsMember2023-01-012023-12-310001243429ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember2023-01-012023-12-310001243429ifrs-full:ReserveOfCashFlowHedgesMember2023-01-012023-12-310001243429ifrs-full:ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember2023-01-012023-12-310001243429ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlansMember2023-01-012023-12-310001243429ifrs-full:IssuedCapitalMember2023-01-012023-12-310001243429ifrs-full:TreasurySharesMember2023-01-012023-12-310001243429ifrs-full:AdditionalPaidinCapitalMember2023-01-012023-12-310001243429ifrs-full:ReserveOfEquityComponentOfConvertibleInstrumentsMember2023-01-012023-12-310001243429ifrs-full:IssuedCapitalMember2023-12-310001243429ifrs-full:TreasurySharesMember2023-12-310001243429ifrs-full:ReserveOfEquityComponentOfConvertibleInstrumentsMember2023-12-310001243429ifrs-full:AdditionalPaidinCapitalMember2023-12-310001243429ifrs-full:RetainedEarningsMember2023-12-310001243429ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember2023-12-310001243429ifrs-full:ReserveOfCashFlowHedgesMember2023-12-310001243429ifrs-full:ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember2023-12-310001243429ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlansMember2023-12-310001243429ifrs-full:EquityAttributableToOwnersOfParentMember2023-12-310001243429ifrs-full:NoncontrollingInterestsMember2023-12-310001243429mt:GlobalMember2023-01-012023-12-31xbrli:pure0001243429srt:EuropeMember2023-01-012023-12-310001243429country:CA2022-10-31iso4217:CAD0001243429stpr:CA-ON2022-10-310001243429srt:ScenarioForecastMembercountry:CA2028-12-31utr:T0001243429country:CA2023-01-012023-12-31mt:furnace0001243429country:ES2023-12-31iso4217:EUR0001243429country:ES2024-01-012028-12-310001243429country:ES2023-01-012023-12-310001243429country:ESmt:SestaoMember2023-01-012023-12-310001243429country:ES2023-02-170001243429country:DE2023-02-170001243429country:FR2023-12-310001243429country:FR2023-07-200001243429srt:ScenarioForecastMembercountry:DE2024-02-290001243429srt:ScenarioForecastMembercountry:BE2030-12-310001243429country:BE2023-01-012023-12-310001243429country:BE2023-06-2200012434292022-01-012023-12-31mt:recycler0001243429mt:SteelanolMembercountry:BE2023-11-300001243429mt:SteelanolMember2023-01-012023-12-31utr:l00012434292022-03-012022-03-31utr:MWd0001243429mt:GreenkoGroupMember2022-03-012022-03-310001243429ifrs-full:JointVenturesWhereEntityIsVenturerMember2023-01-012023-12-310001243429mt:GreenkoGroupMember2023-01-012023-12-310001243429mt:VentosDeSantoAntonioComercializadoraDeEnergiaSAVdSAMember2023-05-012023-05-310001243429ifrs-full:BottomOfRangeMember2023-01-012023-12-310001243429ifrs-full:TopOfRangeMember2023-01-012023-12-310001243429country:UA2023-01-012023-12-31mt:tonne0001243429country:UA2022-01-012022-12-310001243429country:UA2023-12-310001243429country:UA2022-12-31mt:shipment0001243429mt:KryvyiRihSteelPlantMembercountry:UA2023-01-012023-12-310001243429mt:KryvyiRihSteelPlantMembercountry:UA2022-01-012022-12-310001243429country:UA2022-04-11mt:blastFurnace0001243429country:UA2022-04-112022-04-110001243429country:UA2022-01-012022-06-300001243429country:UA2022-10-012022-10-310001243429country:UA2023-05-310001243429country:UA2023-07-012023-07-31utr:km0001243429ifrs-full:PropertyPlantAndEquipmentMembercountry:UA2022-01-012022-12-310001243429mt:NAFTAMembermt:ArcelorMittalDofascoG.P.Member2023-01-012023-12-310001243429mt:ArcelorMittalMexicoS.A.deC.V.Membermt:NAFTAMember2023-01-012023-12-310001243429mt:ArcelorMittalLongProductsCanadaG.P.Membermt:NAFTAMember2023-01-012023-12-310001243429mt:NAFTAMembermt:ArcelorMittalTexasHBILLCMember2023-01-012023-12-310001243429mt:BrazilSegmentMembermt:ArcelorMittalBrasilS.A.Member2023-01-012023-12-310001243429mt:BrazilSegmentMembermt:AcindarIndustriaArgentinadeAcerosS.A.Member2023-01-012023-12-310001243429mt:BrazilSegmentMembermt:ArcelorMittalPecemFormerlyCompanhiaSiderurgicaDoPecemMember2023-01-012023-12-310001243429mt:ArcelorMittalFranceS.A.S.Membermt:EuropeSegmentMember2023-01-012023-12-310001243429mt:EuropeSegmentMembermt:ArcelorMittalBelgiumN.V.Member2023-01-012023-12-310001243429mt:ArcelorMittalEspaaS.A.Membermt:EuropeSegmentMember2023-01-012023-12-310001243429mt:EuropeSegmentMembermt:ArcelorMittalFlatCarbonEuropeS.A.Member2023-01-012023-12-310001243429mt:ArcelorMittalPolandS.A.Membermt:EuropeSegmentMember2023-01-012023-12-310001243429mt:ArcelorMittalEisenhttenstadtGmbHMembermt:EuropeSegmentMember2023-01-012023-12-310001243429mt:ArcelorMittalBremenGmbHMembermt:EuropeSegmentMember2023-01-012023-12-310001243429mt:ArcelorMittalMediterraneS.A.S.Membermt:EuropeSegmentMember2023-01-012023-12-310001243429mt:ArcelorMittalBelvalDifferdangeS.A.Membermt:EuropeSegmentMember2023-01-012023-12-310001243429mt:ArcelorMittalHamburgGmbHMembermt:EuropeSegmentMember2023-01-012023-12-310001243429mt:ArcelorMittalDuisburgGmbHMembermt:EuropeSegmentMember2023-01-012023-12-310001243429mt:ArcelorMittalInternationalLuxembourgS.A.Membermt:EuropeSegmentMember2023-01-012023-12-310001243429mt:ArcelorMittalSouthAfricaLtd.Membermt:ACISMember2023-01-012023-12-310001243429mt:JSCArcelorMittalTemirtauMembermt:ACISMember2023-01-012023-12-310001243429mt:ACISMembermt:PJSCArcelorMittalKryvyiRihMember2023-01-012023-12-310001243429mt:MiningMembermt:ArcelorMittalMiningCanadaGPAndArcelorMittalInfrastructureCanadaGPAMMCMember2023-01-012023-12-310001243429mt:ArcelorMittalLiberiaLtdMembermt:MiningMember2023-01-012023-12-310001243429mt:AcindarIndustriaArgentinadeAcerosS.A.Member2023-12-310001243429mt:AcindarIndustriaArgentinadeAcerosS.A.Member2022-12-310001243429mt:AcindarIndustriaArgentinadeAcerosS.A.Member2021-12-310001243429mt:AcindarIndustriaArgentinadeAcerosS.A.Member2023-01-012023-12-310001243429mt:AcindarIndustriaArgentinadeAcerosS.A.Member2022-01-012022-12-310001243429mt:AcindarIndustriaArgentinadeAcerosS.A.Member2021-01-012021-12-310001243429mt:IndustriasUniconCAMember2023-12-310001243429mt:IndustriasUniconCAMember2022-12-310001243429mt:IndustriasUniconCAMember2021-12-310001243429mt:IndustriasUniconCAMember2023-01-012023-12-310001243429mt:IndustriasUniconCAMember2022-01-012022-12-310001243429mt:IndustriasUniconCAMember2021-01-012021-12-310001243429mt:ArcelorMittalSulFluminenseMember2023-01-310001243429mt:ArcelorMittalPecemFormerlyCompanhiaSiderurgicaDoPecemMember2023-03-090001243429mt:ArcelorMittalPecemFormerlyCompanhiaSiderurgicaDoPecemMember2023-03-092023-03-09mt:ton0001243429mt:RestrictedCashMembermt:ArcelorMittalPecemFormerlyCompanhiaSiderurgicaDoPecemMember2023-03-090001243429ifrs-full:ShorttermBorrowingsMembermt:ArcelorMittalPecemFormerlyCompanhiaSiderurgicaDoPecemMember2023-03-090001243429mt:ArcelorMittalPecemFormerlyCompanhiaSiderurgicaDoPecemMember2023-03-092023-12-3100012434292023-01-012023-06-30mt:acquistion0001243429mt:AMDSAcquisitionsMember2023-03-100001243429mt:AMDSAcquisitionsMember2023-03-112023-12-310001243429mt:ArcelorMittalPecemAndAMDSMember2023-01-012023-12-31mt:acquisitions0001243429mt:JohnLawrieMetalsLimitedMember2022-02-28iso4217:GBP0001243429mt:JohnLawrieMetalsLimitedMember2022-02-282022-12-310001243429mt:ArchitecturalSteelLimitedMember2022-05-020001243429mt:ArchitecturalSteelLimitedMember2022-05-022022-12-310001243429mt:CentroServiziMetalliSpAMember2022-05-092022-05-090001243429mt:CentroServiziMetalliSpAMember2022-05-090001243429mt:CentroServiziMetalliSpAMember2022-05-092022-12-310001243429mt: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:CondesaTubosSLCondesaMember2021-11-182021-11-180001243429mt:CondesaTubosSLCondesaMember2021-11-190001243429mt:CondesaTubosSLCondesaMember2021-11-192021-11-190001243429mt:AMDSAcquisitionsMember2023-01-032023-03-100001243429mt:JohnLawrieMetalsLimitedMember2022-02-282022-02-280001243429mt:ArchitecturalSteelLimitedMember2022-05-052022-05-050001243429mt:DisposalGroupDisposedofbySaleNotDiscontinuedOperationsMembermt:ArcelorMittalTemirtauMember2023-12-072023-12-070001243429mt:DisposalGroupDisposedofbySaleNotDiscontinuedOperationsMembermt:ArcelorMittalTemirtauMember2023-12-070001243429mt:DisposalGroupDisposedofbySaleNotDiscontinuedOperationsMembermt:ArcelorMittalTemirtauMember2023-12-31mt:Installment00012434292020-03-042020-03-040001243429mt: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:AcciaierieDItaliaHoldingMembermt:DisposalGroupDisposedofbySaleNotDiscontinuedOperationsMember2021-04-140001243429mt:AcciaierieDItaliaHoldingMember2021-04-142021-04-140001243429mt:AcciaierieDItaliaHoldingMembermt:DisposalGroupDisposedofbySaleNotDiscontinuedOperationsMember2021-04-142021-04-140001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2023-01-012023-12-310001243429mt:CalvertMember2023-01-012023-12-310001243429mt:ValinArcelorMittalAutomotiveSteelMember2023-01-012023-12-310001243429mt:TamehMember2023-01-012023-12-310001243429mt:BorcelikCelikSanayiiTicaretAnonimSirketiMember2023-01-012023-12-310001243429mt:ArcelorMittalTubularProductsAlJubailMember2023-01-012023-12-310001243429mt:VentosDeSantoAntonioComercializadoraDeEnergiaSAVdSAMember2023-01-012023-12-310001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2023-12-310001243429mt:CalvertMember2023-12-310001243429mt:ValinArcelorMittalAutomotiveSteelMember2023-12-310001243429mt:TamehMember2023-12-310001243429mt:BorcelikCelikSanayiiTicaretAnonimSirketiMember2023-12-310001243429mt:ArcelorMittalTubularProductsAlJubailMember2023-12-310001243429mt:VentosDeSantoAntonioComercializadoraDeEnergiaSAVdSAMember2023-12-310001243429ifrs-full:JointVenturesMember2023-12-310001243429ifrs-full:JointVenturesMember2023-01-012023-12-310001243429mt: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:ArcelorMittalNipponSteelIndiaLimitedMember2019-12-082019-12-080001243429mt:NipponSteelCorporationMembermt:ArcelorMittalNipponSteelIndiaLimitedMember2019-12-082019-12-080001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2019-12-162019-12-16mt:plantmt:service_centermt:plant_system0001243429mt:KirandulVizagSystemMembermt:ArcelorMittalNipponSteelIndiaLimitedMember2023-01-012023-12-31utr:t0001243429mt:DabunaParadeepSystemMembermt:ArcelorMittalNipponSteelIndiaLimitedMember2023-01-012023-12-310001243429mt:DebottleneckingMembermt:ArcelorMittalNipponSteelIndiaLimitedMember2023-12-310001243429mt:DownstreamMembermt:ArcelorMittalNipponSteelIndiaLimitedMember2023-12-310001243429mt:ArcelorMittalNipponSteelIndiaLimitedMembermt:UpstreamMember2023-12-310001243429srt:ScenarioForecastMembermt:ArcelorMittalNipponSteelIndiaLimitedMember2026-01-012026-06-300001243429srt:ScenarioForecastMembermt:ArcelorMittalNipponSteelIndiaLimitedMember2026-12-310001243429ifrs-full:BottomOfRangeMembermt:ArcelorMittalNipponSteelIndiaLimitedMember2023-12-310001243429ifrs-full:TopOfRangeMembermt:Phase1AMembermt:ArcelorMittalNipponSteelIndiaLimitedMember2023-12-310001243429ifrs-full:BottomOfRangeMembermt:Phase1BMembermt:ArcelorMittalNipponSteelIndiaLimitedMember2023-12-310001243429ifrs-full:TopOfRangeMembermt:Phase1BMembermt:ArcelorMittalNipponSteelIndiaLimitedMember2023-12-310001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2018-12-31mt:stage0001243429mt:ArcelorMittalNipponSteelIndiaLimitedMember2018-01-012018-12-310001243429mt:ArcelorMittalNipponSteelIndiaLimitedMembermt:Phase1Member2023-12-310001243429ifrs-full:BottomOfRangeMembermt:Phase2Membermt:ArcelorMittalNipponSteelIndiaLimitedMember2023-12-310001243429ifrs-full:TopOfRangeMembermt:Phase2Membermt:ArcelorMittalNipponSteelIndiaLimitedMember2023-12-310001243429mt:FivePointOneFourSixBillionTermLoanDue2030Member2020-03-160001243429mt:FivePointOneFourSixBillionTermLoanDue2030Member2020-03-162020-03-160001243429mt:FiveBillionJapaneseFloatingRateTermLoanMembermt:AMNSLuxembourgMember2023-03-300001243429mt:FiveBillionJapaneseFloatingRateTermLoanMembermt:AMNSLuxembourgMember2023-03-302023-03-300001243429mt:FivePointOneFourSixBillionTermLoanDue2030Membersrt:ScenarioForecastMembermt:TrancheAMember2026-04-300001243429mt:FivePointOneFourSixBillionTermLoanDue2030Membersrt:ScenarioForecastMembermt:TrancheBMember2026-04-300001243429mt:FivePointOneFourSixBillionTermLoanDue2030Membersrt:ScenarioForecastMembermt:TrancheCMember2026-04-300001243429mt:EssarGroupMembermt:ArcelorMittalNipponSteelIndiaLimitedMember2022-08-260001243429mt:EssarGroupMembermt:HaziraMembermt:ArcelorMittalNipponSteelIndiaLimitedMember2022-10-190001243429mt:EssarGroupMembermt:ParadeepMembermt:ArcelorMittalNipponSteelIndiaLimitedMember2022-11-150001243429mt:AcciaierieDItaliaHoldingMember2021-04-140001243429mt:AcciaierieDItaliaHoldingMember2022-05-312022-05-310001243429mt:AcciaierieDItaliaHoldingMembermt:InvitaliaMember2022-12-012022-12-310001243429mt:AcciaierieDItaliaHoldingMembermt:ArcelorMittalMember2022-12-012022-12-310001243429mt:AcciaierieDItaliaHoldingMembermt:InvitaliaMember2023-02-142023-02-140001243429mt:AcciaierieDItaliaHoldingMembermt:ArcelorMittalMember2023-02-142023-02-140001243429mt:CalvertMember2020-12-092020-12-090001243429mt:VentosDeSantoAntonioComercializadoraDeEnergiaSAVdSAMember2023-05-052023-05-050001243429mt:CasaDosVentosMembermt:VentosDeSantoAntonioComercializadoraDeEnergiaSAVdSAMember2023-05-052023-05-050001243429mt:VentosDeSantoAntonioComercializadoraDeEnergiaSAVdSAMember2023-05-05mt:facility0001243429ifrs-full:JointVenturesWhereEntityIsVenturerMembermt:ArcelorMittalTubularProductsAlJubailMember2020-12-310001243429ifrs-full:JointVenturesWhereEntityIsVenturerMembermt:ArcelorMittalTubularProductsAlJubailMember2021-01-012021-12-310001243429mt: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:ChinaOrientalGroupCompanyLimitedMember2023-12-310001243429mt:DHSGroupMember2023-12-310001243429mt:GonvarriSteelIndustriesMember2023-12-310001243429mt:BaffinlandMember2023-12-310001243429ifrs-full:AssociatesMember2023-12-310001243429mt:ChinaOrientalGroupCompanyLimitedMember2023-01-012023-12-310001243429mt:DHSGroupMember2023-01-012023-12-310001243429mt:GonvarriSteelIndustriesMember2023-01-012023-12-310001243429mt:BaffinlandMember2023-01-012023-12-310001243429ifrs-full:AssociatesMember2023-01-012023-12-310001243429mt:BaffinlandMember2020-09-012020-09-300001243429mt:ChinaOrientalGroupCompanyLimitedMember2022-12-310001243429mt:DHSGroupMember2022-12-310001243429mt:GonvarriSteelIndustriesMember2022-12-310001243429mt:BaffinlandMember2022-12-310001243429ifrs-full:AssociatesMember2022-12-310001243429ifrs-full:AssociatesMember2022-01-012022-12-310001243429mt: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:AssociatesMember2021-01-012021-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialAssociatesMember2023-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialJointVenturesMember2023-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialAssociatesMemberifrs-full:AggregatedIndividuallyImmaterialJointVenturesMember2023-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialAssociatesMember2022-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialJointVenturesMember2022-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialAssociatesMemberifrs-full:AggregatedIndividuallyImmaterialJointVenturesMember2022-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialAssociatesMember2023-01-012023-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialJointVenturesMember2023-01-012023-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialAssociatesMemberifrs-full:AggregatedIndividuallyImmaterialJointVenturesMember2023-01-012023-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialAssociatesMember2022-01-012022-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialJointVenturesMember2022-01-012022-12-310001243429ifrs-full:AggregatedIndividuallyImmaterialAssociatesMemberifrs-full:AggregatedIndividuallyImmaterialJointVenturesMember2022-01-012022-12-310001243429mt:AcciaierieDItaliaHoldingMember2023-01-012023-12-310001243429mt:PeaColoradaMember2023-01-012023-12-310001243429mt:PeaColoradaMember2022-01-012022-12-310001243429mt:OtherInvestments1Membermt:EregliDemirveCelikFabrikalariT.A.S.Member2023-12-310001243429mt:OtherInvestments1Membermt:EregliDemirveCelikFabrikalariT.A.S.Member2022-12-310001243429mt:ArcelorMitalXCarbMembermt:OtherInvestments1Member2023-12-310001243429mt:ArcelorMitalXCarbMembermt:OtherInvestments1Member2022-12-310001243429mt:StalproduktSAMembermt:OtherInvestments1Member2023-12-310001243429mt:StalproduktSAMembermt:OtherInvestments1Member2022-12-310001243429mt:OtherInvestments1Membermt:OtherInvestmentIssuersMember2023-12-310001243429mt:OtherInvestments1Membermt:OtherInvestmentIssuersMember2022-12-310001243429mt:OtherInvestments1Member2023-12-310001243429mt:OtherInvestments1Member2022-12-310001243429mt:EregliDemirVeCelikFabrikalariTASErdemirMemberifrs-full:OrdinarySharesMember2022-12-310001243429mt:EregliDemirVeCelikFabrikalariTASErdemirMemberifrs-full:OrdinarySharesMember2023-06-300001243429mt:EregliDemirVeCelikFabrikalariTASErdemirMemberifrs-full:OrdinarySharesMember2023-01-012023-06-300001243429mt:EregliDemirVeCelikFabrikalariTASErdemirMembermt:OtherInvestments1Member2023-01-012023-12-310001243429mt:EregliDemirVeCelikFabrikalariTASErdemirMembermt:OtherInvestments1Member2022-01-012022-12-310001243429mt:ClevelandCliffsIncMembermt:OtherInvestments1Member2021-02-092021-06-180001243429mt:ClevelandCliffsIncMembermt:OtherInvestments1Member2021-06-182021-06-180001243429ifrs-full:PreferenceSharesMembermt:ClevelandCliffsIncMembermt:OtherInvestments1Member2021-07-282021-07-280001243429mt:ClevelandCliffsIncMembermt:OtherInvestments1Member2021-07-282021-07-280001243429mt:ArcelorMitalXCarbMembermt:OtherInvestments1Membersrt:MaximumMember2023-12-310001243429mt:ArcelorMitalXCarbMembermt:OtherInvestments1Member2021-03-012023-12-310001243429mt:ArcelorMitalXCarbMembermt:OtherInvestments1Member2023-01-012023-12-310001243429mt:ArcelorMitalXCarbMembermt:OtherInvestments1Member2022-01-012022-12-310001243429mt:LanzaTechMember2021-01-012021-12-310001243429mt:HeliogenMember2021-01-012021-12-310001243429mt:FormEnergyMember2021-01-012021-12-310001243429mt:FormEnergyMember2022-01-012022-12-310001243429mt:TerraPowerMember2022-01-012022-12-310001243429mt:BostonMetalMember2023-01-262023-01-260001243429mt:TerraPowerMember2023-06-302023-06-300001243429mt:TerraPowerMember2023-07-042023-07-040001243429mt:StalproduktSAMembermt:OtherInvestments1Member2023-01-012023-12-310001243429mt:StalproduktSAMembermt:OtherInvestments1Member2022-01-012022-12-310001243429mt:StalproduktSAMember2022-01-012022-12-310001243429mt:EregliDemirVeCelikFabrikalariTASErdemirMember2022-01-012022-12-310001243429mt:EregliDemirVeCelikFabrikalariTASErdemirMember2021-01-012021-12-31mt:segment0001243429ifrs-full:OperatingSegmentsMembermt:NAFTAMember2023-01-012023-12-310001243429mt:BrazilSegmentMemberifrs-full:OperatingSegmentsMember2023-01-012023-12-310001243429ifrs-full:OperatingSegmentsMembermt:EuropeSegmentMember2023-01-012023-12-310001243429ifrs-full:OperatingSegmentsMembermt:ACISMember2023-01-012023-12-310001243429ifrs-full:OperatingSegmentsMembermt:MiningMember2023-01-012023-12-310001243429ifrs-full:OperatingSegmentsMemberifrs-full:AllOtherSegmentsMember2023-01-012023-12-310001243429mt:NAFTAMemberifrs-full:EliminationOfIntersegmentAmountsMember2023-01-012023-12-310001243429mt:BrazilSegmentMemberifrs-full:EliminationOfIntersegmentAmountsMember2023-01-012023-12-310001243429ifrs-full:EliminationOfIntersegmentAmountsMembermt:EuropeSegmentMember2023-01-012023-12-310001243429mt:ACISMemberifrs-full:EliminationOfIntersegmentAmountsMember2023-01-012023-12-310001243429mt:MiningMemberifrs-full:EliminationOfIntersegmentAmountsMember2023-01-012023-12-310001243429ifrs-full:AllOtherSegmentsMemberifrs-full:EliminationOfIntersegmentAmountsMember2023-01-012023-12-310001243429ifrs-full:EliminationOfIntersegmentAmountsMember2023-01-012023-12-310001243429ifrs-full:OperatingSegmentsMembermt:NAFTAMember2022-01-012022-12-310001243429mt:BrazilSegmentMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429ifrs-full:OperatingSegmentsMembermt:EuropeSegmentMember2022-01-012022-12-310001243429ifrs-full:OperatingSegmentsMembermt:ACISMember2022-01-012022-12-310001243429ifrs-full:OperatingSegmentsMembermt:MiningMember2022-01-012022-12-310001243429ifrs-full:OperatingSegmentsMemberifrs-full:AllOtherSegmentsMember2022-01-012022-12-310001243429mt:NAFTAMemberifrs-full:EliminationOfIntersegmentAmountsMember2022-01-012022-12-310001243429mt:BrazilSegmentMemberifrs-full:EliminationOfIntersegmentAmountsMember2022-01-012022-12-310001243429ifrs-full:EliminationOfIntersegmentAmountsMembermt:EuropeSegmentMember2022-01-012022-12-310001243429mt:ACISMemberifrs-full:EliminationOfIntersegmentAmountsMember2022-01-012022-12-310001243429mt:MiningMemberifrs-full:EliminationOfIntersegmentAmountsMember2022-01-012022-12-310001243429ifrs-full:AllOtherSegmentsMemberifrs-full:EliminationOfIntersegmentAmountsMember2022-01-012022-12-310001243429ifrs-full:EliminationOfIntersegmentAmountsMember2022-01-012022-12-310001243429ifrs-full:OperatingSegmentsMembermt:NAFTAMember2021-01-012021-12-310001243429mt:BrazilSegmentMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429ifrs-full:OperatingSegmentsMembermt:EuropeSegmentMember2021-01-012021-12-310001243429ifrs-full:OperatingSegmentsMembermt:ACISMember2021-01-012021-12-310001243429ifrs-full:OperatingSegmentsMembermt:MiningMember2021-01-012021-12-310001243429ifrs-full:OperatingSegmentsMemberifrs-full:AllOtherSegmentsMember2021-01-012021-12-310001243429mt:NAFTAMemberifrs-full:EliminationOfIntersegmentAmountsMember2021-01-012021-12-310001243429mt:BrazilSegmentMemberifrs-full:EliminationOfIntersegmentAmountsMember2021-01-012021-12-310001243429ifrs-full:EliminationOfIntersegmentAmountsMembermt:EuropeSegmentMember2021-01-012021-12-310001243429mt:ACISMemberifrs-full:EliminationOfIntersegmentAmountsMember2021-01-012021-12-310001243429mt:MiningMemberifrs-full:EliminationOfIntersegmentAmountsMember2021-01-012021-12-310001243429ifrs-full:AllOtherSegmentsMemberifrs-full:EliminationOfIntersegmentAmountsMember2021-01-012021-12-310001243429ifrs-full:EliminationOfIntersegmentAmountsMember2021-01-012021-12-310001243429country:US2023-01-012023-12-310001243429country:US2022-01-012022-12-310001243429country:US2021-01-012021-12-310001243429country:BR2023-01-012023-12-310001243429country:BR2022-01-012022-12-310001243429country:BR2021-01-012021-12-310001243429country:CA2022-01-012022-12-310001243429country:CA2021-01-012021-12-310001243429country:MX2023-01-012023-12-310001243429country:MX2022-01-012022-12-310001243429country:MX2021-01-012021-12-310001243429country:AR2023-01-012023-12-310001243429country:AR2022-01-012022-12-310001243429country:AR2021-01-012021-12-310001243429mt:OtherAmericasMember2023-01-012023-12-310001243429mt:OtherAmericasMember2022-01-012022-12-310001243429mt:OtherAmericasMember2021-01-012021-12-310001243429srt:AmericasMember2023-01-012023-12-310001243429srt:AmericasMember2022-01-012022-12-310001243429srt:AmericasMember2021-01-012021-12-310001243429country:DE2023-01-012023-12-310001243429country:DE2022-01-012022-12-310001243429country:DE2021-01-012021-12-310001243429country:PL2023-01-012023-12-310001243429country:PL2022-01-012022-12-310001243429country:PL2021-01-012021-12-310001243429country:FR2023-01-012023-12-310001243429country:FR2022-01-012022-12-310001243429country:FR2021-01-012021-12-310001243429country:ES2022-01-012022-12-310001243429country:ES2021-01-012021-12-310001243429country:IT2023-01-012023-12-310001243429country:IT2022-01-012022-12-310001243429country:IT2021-01-012021-12-310001243429country:CZ2023-01-012023-12-310001243429country:CZ2022-01-012022-12-310001243429country:CZ2021-01-012021-12-310001243429country:TR2023-01-012023-12-310001243429country:TR2022-01-012022-12-310001243429country:TR2021-01-012021-12-310001243429country:GB2023-01-012023-12-310001243429country:GB2022-01-012022-12-310001243429country:GB2021-01-012021-12-310001243429country:BE2022-01-012022-12-310001243429country:BE2021-01-012021-12-310001243429country:NL2023-01-012023-12-310001243429country:NL2022-01-012022-12-310001243429country:NL2021-01-012021-12-310001243429country:RU2023-01-012023-12-310001243429country:RU2022-01-012022-12-310001243429country:RU2021-01-012021-12-310001243429country:RO2023-01-012023-12-310001243429country:RO2022-01-012022-12-310001243429country:RO2021-01-012021-12-310001243429country:UA2021-01-012021-12-310001243429mt:OtherEuropeMember2023-01-012023-12-310001243429mt:OtherEuropeMember2022-01-012022-12-310001243429mt:OtherEuropeMember2021-01-012021-12-310001243429srt:EuropeMember2022-01-012022-12-310001243429srt:EuropeMember2021-01-012021-12-310001243429country:ZA2023-01-012023-12-310001243429country:ZA2022-01-012022-12-310001243429country:ZA2021-01-012021-12-310001243429country:MA2023-01-012023-12-310001243429country:MA2022-01-012022-12-310001243429country:MA2021-01-012021-12-310001243429mt:RestofAfricaMember2023-01-012023-12-310001243429mt:RestofAfricaMember2022-01-012022-12-310001243429mt:RestofAfricaMember2021-01-012021-12-310001243429country:CN2023-01-012023-12-310001243429country:CN2022-01-012022-12-310001243429country:CN2021-01-012021-12-310001243429country:KZ2023-01-012023-12-310001243429country:KZ2022-01-012022-12-310001243429country:KZ2021-01-012021-12-310001243429country:KR2023-01-012023-12-310001243429country:KR2022-01-012022-12-310001243429country:KR2021-01-012021-12-310001243429country:IN2023-01-012023-12-310001243429country:IN2022-01-012022-12-310001243429country:IN2021-01-012021-12-310001243429mt:RestofAsiaMember2023-01-012023-12-310001243429mt:RestofAsiaMember2022-01-012022-12-310001243429mt:RestofAsiaMember2021-01-012021-12-310001243429mt:AsiaandAfricaMember2023-01-012023-12-310001243429mt:AsiaandAfricaMember2022-01-012022-12-310001243429mt:AsiaandAfricaMember2021-01-012021-12-310001243429country:LU2023-01-012023-12-310001243429country:LU2022-01-012022-12-310001243429country:LU2021-01-012021-12-310001243429country:CA2023-12-310001243429country:CA2022-12-310001243429country:BR2023-12-310001243429country:BR2022-12-310001243429country:US2023-12-310001243429country:US2022-12-310001243429country:MX2023-12-310001243429country:MX2022-12-310001243429country:AR2023-12-310001243429country:AR2022-12-310001243429country:VE2023-12-310001243429country:VE2022-12-310001243429mt:OtherAmericasMember2023-12-310001243429mt:OtherAmericasMember2022-12-310001243429srt:AmericasMember2023-12-310001243429srt:AmericasMember2022-12-310001243429country:FR2022-12-310001243429country:DE2023-12-310001243429country:DE2022-12-310001243429country:BE2023-12-310001243429country:BE2022-12-310001243429country:PL2023-12-310001243429country:PL2022-12-310001243429country:ES2022-12-310001243429country:LU2023-12-310001243429country:LU2022-12-310001243429country:BA2023-12-310001243429country:BA2022-12-310001243429country:RO2023-12-310001243429country:RO2022-12-310001243429country:CZ2023-12-310001243429country:CZ2022-12-310001243429mt:OtherEuropeMember2023-12-310001243429mt:OtherEuropeMember2022-12-310001243429srt:EuropeMember2023-12-310001243429srt:EuropeMember2022-12-310001243429country:KZ2023-12-310001243429country:KZ2022-12-310001243429country:ZA2023-12-310001243429country:ZA2022-12-310001243429country:LR2023-12-310001243429country:LR2022-12-310001243429country:MA2023-12-310001243429country:MA2022-12-310001243429country:IN2023-12-310001243429country:IN2022-12-310001243429mt:OtherAsiaandAfricaMember2023-12-310001243429mt:OtherAsiaandAfricaMember2022-12-310001243429mt:AsiaandAfricaMember2023-12-310001243429mt:AsiaandAfricaMember2022-12-310001243429mt:FlatproductsMember2023-01-012023-12-310001243429mt:FlatproductsMember2022-01-012022-12-310001243429mt:FlatproductsMember2021-01-012021-12-310001243429mt:LongproductsMember2023-01-012023-12-310001243429mt:LongproductsMember2022-01-012022-12-310001243429mt:LongproductsMember2021-01-012021-12-310001243429mt:TubularproductsMember2023-01-012023-12-310001243429mt:TubularproductsMember2022-01-012022-12-310001243429mt:TubularproductsMember2021-01-012021-12-310001243429mt:MiningproductsMember2023-01-012023-12-310001243429mt:MiningproductsMember2022-01-012022-12-310001243429mt:MiningproductsMember2021-01-012021-12-310001243429mt:OtherproductsMember2023-01-012023-12-310001243429mt:OtherproductsMember2022-01-012022-12-310001243429mt:OtherproductsMember2021-01-012021-12-310001243429mt:SteelSalesMemberifrs-full:OperatingSegmentsMembermt:NAFTAMember2023-01-012023-12-310001243429mt:BrazilSegmentMembermt:SteelSalesMemberifrs-full:OperatingSegmentsMember2023-01-012023-12-310001243429mt:SteelSalesMemberifrs-full:OperatingSegmentsMembermt:EuropeSegmentMember2023-01-012023-12-310001243429mt:SteelSalesMemberifrs-full:OperatingSegmentsMembermt:ACISMember2023-01-012023-12-310001243429mt:SteelSalesMemberifrs-full:OperatingSegmentsMembermt:MiningMember2023-01-012023-12-310001243429mt:SteelSalesMemberifrs-full:UnallocatedAmountsMember2023-01-012023-12-310001243429mt:SteelSalesMember2023-01-012023-12-310001243429mt:NonSteelSalesMemberifrs-full:OperatingSegmentsMembermt:NAFTAMember2023-01-012023-12-310001243429mt:BrazilSegmentMembermt:NonSteelSalesMemberifrs-full:OperatingSegmentsMember2023-01-012023-12-310001243429mt:NonSteelSalesMemberifrs-full:OperatingSegmentsMembermt:EuropeSegmentMember2023-01-012023-12-310001243429mt:NonSteelSalesMemberifrs-full:OperatingSegmentsMembermt:ACISMember2023-01-012023-12-310001243429mt:NonSteelSalesMemberifrs-full:OperatingSegmentsMembermt:MiningMember2023-01-012023-12-310001243429mt:NonSteelSalesMemberifrs-full:UnallocatedAmountsMember2023-01-012023-12-310001243429mt:NonSteelSalesMember2023-01-012023-12-310001243429ifrs-full:OperatingSegmentsMembermt:ByProductSalesMembermt:NAFTAMember2023-01-012023-12-310001243429mt:BrazilSegmentMemberifrs-full:OperatingSegmentsMembermt:ByProductSalesMember2023-01-012023-12-310001243429ifrs-full:OperatingSegmentsMembermt:ByProductSalesMembermt:EuropeSegmentMember2023-01-012023-12-310001243429ifrs-full:OperatingSegmentsMembermt:ByProductSalesMembermt:ACISMember2023-01-012023-12-310001243429ifrs-full:OperatingSegmentsMembermt:ByProductSalesMembermt:MiningMember2023-01-012023-12-310001243429mt:ByProductSalesMemberifrs-full:UnallocatedAmountsMember2023-01-012023-12-310001243429mt:ByProductSalesMember2023-01-012023-12-310001243429ifrs-full:OperatingSegmentsMembermt:OtherSalesMembermt:NAFTAMember2023-01-012023-12-310001243429mt:BrazilSegmentMemberifrs-full:OperatingSegmentsMembermt:OtherSalesMember2023-01-012023-12-310001243429ifrs-full:OperatingSegmentsMembermt:OtherSalesMembermt:EuropeSegmentMember2023-01-012023-12-310001243429ifrs-full:OperatingSegmentsMembermt:OtherSalesMembermt:ACISMember2023-01-012023-12-310001243429ifrs-full:OperatingSegmentsMembermt:OtherSalesMembermt:MiningMember2023-01-012023-12-310001243429mt:OtherSalesMemberifrs-full:UnallocatedAmountsMember2023-01-012023-12-310001243429mt:OtherSalesMember2023-01-012023-12-310001243429ifrs-full:UnallocatedAmountsMember2023-01-012023-12-310001243429mt:SteelSalesMemberifrs-full:OperatingSegmentsMembermt:NAFTAMember2022-01-012022-12-310001243429mt:BrazilSegmentMembermt:SteelSalesMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429mt:SteelSalesMemberifrs-full:OperatingSegmentsMembermt:EuropeSegmentMember2022-01-012022-12-310001243429mt:SteelSalesMemberifrs-full:OperatingSegmentsMembermt:ACISMember2022-01-012022-12-310001243429mt:SteelSalesMemberifrs-full:OperatingSegmentsMembermt:MiningMember2022-01-012022-12-310001243429mt:SteelSalesMemberifrs-full:UnallocatedAmountsMember2022-01-012022-12-310001243429mt:SteelSalesMember2022-01-012022-12-310001243429mt:NonSteelSalesMemberifrs-full:OperatingSegmentsMembermt:NAFTAMember2022-01-012022-12-310001243429mt:BrazilSegmentMembermt:NonSteelSalesMemberifrs-full:OperatingSegmentsMember2022-01-012022-12-310001243429mt:NonSteelSalesMemberifrs-full:OperatingSegmentsMembermt:EuropeSegmentMember2022-01-012022-12-310001243429mt:NonSteelSalesMemberifrs-full:OperatingSegmentsMembermt:ACISMember2022-01-012022-12-310001243429mt:NonSteelSalesMemberifrs-full:OperatingSegmentsMembermt:MiningMember2022-01-012022-12-310001243429mt:NonSteelSalesMemberifrs-full:UnallocatedAmountsMember2022-01-012022-12-310001243429mt:NonSteelSalesMember2022-01-012022-12-310001243429ifrs-full:OperatingSegmentsMembermt:ByProductSalesMembermt:NAFTAMember2022-01-012022-12-310001243429mt:BrazilSegmentMemberifrs-full:OperatingSegmentsMembermt:ByProductSalesMember2022-01-012022-12-310001243429ifrs-full:OperatingSegmentsMembermt:ByProductSalesMembermt:EuropeSegmentMember2022-01-012022-12-310001243429ifrs-full:OperatingSegmentsMembermt:ByProductSalesMembermt:ACISMember2022-01-012022-12-310001243429ifrs-full:OperatingSegmentsMembermt:ByProductSalesMembermt:MiningMember2022-01-012022-12-310001243429mt:ByProductSalesMemberifrs-full:UnallocatedAmountsMember2022-01-012022-12-310001243429mt:ByProductSalesMember2022-01-012022-12-310001243429ifrs-full:OperatingSegmentsMembermt:OtherSalesMembermt:NAFTAMember2022-01-012022-12-310001243429mt:BrazilSegmentMemberifrs-full:OperatingSegmentsMembermt:OtherSalesMember2022-01-012022-12-310001243429ifrs-full:OperatingSegmentsMembermt:OtherSalesMembermt:EuropeSegmentMember2022-01-012022-12-310001243429ifrs-full:OperatingSegmentsMembermt:OtherSalesMembermt:ACISMember2022-01-012022-12-310001243429ifrs-full:OperatingSegmentsMembermt:OtherSalesMembermt:MiningMember2022-01-012022-12-310001243429mt:OtherSalesMemberifrs-full:UnallocatedAmountsMember2022-01-012022-12-310001243429mt:OtherSalesMember2022-01-012022-12-310001243429ifrs-full:UnallocatedAmountsMember2022-01-012022-12-310001243429mt:SteelSalesMemberifrs-full:OperatingSegmentsMembermt:NAFTAMember2021-01-012021-12-310001243429mt:BrazilSegmentMembermt:SteelSalesMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429mt:SteelSalesMemberifrs-full:OperatingSegmentsMembermt:EuropeSegmentMember2021-01-012021-12-310001243429mt:SteelSalesMemberifrs-full:OperatingSegmentsMembermt:ACISMember2021-01-012021-12-310001243429mt:SteelSalesMemberifrs-full:OperatingSegmentsMembermt:MiningMember2021-01-012021-12-310001243429mt:SteelSalesMemberifrs-full:UnallocatedAmountsMember2021-01-012021-12-310001243429mt:SteelSalesMember2021-01-012021-12-310001243429mt:NonSteelSalesMemberifrs-full:OperatingSegmentsMembermt:NAFTAMember2021-01-012021-12-310001243429mt:BrazilSegmentMembermt:NonSteelSalesMemberifrs-full:OperatingSegmentsMember2021-01-012021-12-310001243429mt:NonSteelSalesMemberifrs-full:OperatingSegmentsMembermt:EuropeSegmentMember2021-01-012021-12-310001243429mt:NonSteelSalesMemberifrs-full:OperatingSegmentsMembermt:ACISMember2021-01-012021-12-310001243429mt:NonSteelSalesMemberifrs-full:OperatingSegmentsMembermt:MiningMember2021-01-012021-12-310001243429mt:NonSteelSalesMemberifrs-full:UnallocatedAmountsMember2021-01-012021-12-310001243429mt:NonSteelSalesMember2021-01-012021-12-310001243429ifrs-full:OperatingSegmentsMembermt:ByProductSalesMembermt:NAFTAMember2021-01-012021-12-310001243429mt:BrazilSegmentMemberifrs-full:OperatingSegmentsMembermt:ByProductSalesMember2021-01-012021-12-310001243429ifrs-full:OperatingSegmentsMembermt:ByProductSalesMembermt:EuropeSegmentMember2021-01-012021-12-310001243429ifrs-full:OperatingSegmentsMembermt:ByProductSalesMembermt:ACISMember2021-01-012021-12-310001243429ifrs-full:OperatingSegmentsMembermt:ByProductSalesMembermt:MiningMember2021-01-012021-12-310001243429mt:ByProductSalesMemberifrs-full:UnallocatedAmountsMember2021-01-012021-12-310001243429mt:ByProductSalesMember2021-01-012021-12-310001243429ifrs-full:OperatingSegmentsMembermt:OtherSalesMembermt:NAFTAMember2021-01-012021-12-310001243429mt:BrazilSegmentMemberifrs-full:OperatingSegmentsMembermt:OtherSalesMember2021-01-012021-12-310001243429ifrs-full:OperatingSegmentsMembermt:OtherSalesMembermt:EuropeSegmentMember2021-01-012021-12-310001243429ifrs-full:OperatingSegmentsMembermt:OtherSalesMembermt:ACISMember2021-01-012021-12-310001243429ifrs-full:OperatingSegmentsMembermt:OtherSalesMembermt:MiningMember2021-01-012021-12-310001243429mt:OtherSalesMemberifrs-full:UnallocatedAmountsMember2021-01-012021-12-310001243429mt:OtherSalesMember2021-01-012021-12-310001243429ifrs-full:UnallocatedAmountsMember2021-01-012021-12-310001243429ifrs-full:NotLaterThanOneYearMember2023-12-310001243429mt:AMUSADivestmentBusinessMember2023-01-012023-12-310001243429mt:AMUSADivestmentBusinessMember2022-01-012022-12-310001243429mt:AMUSADivestmentBusinessMember2021-01-012021-12-310001243429ifrs-full:LaterThanSixMonthsMemberifrs-full:FinancialAssetsIndividuallyAssessedForCreditLossesMember2023-01-012023-12-310001243429mt:LessThanSixMonthsMemberifrs-full:FinancialAssetsIndividuallyAssessedForCreditLossesMember2023-01-012023-12-310001243429mt:LaterThanOneMonthMemberifrs-full:FinancialAssetsIndividuallyAssessedForCreditLossesMember2023-01-012023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:AccumulatedImpairmentMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:AccumulatedImpairmentMember2022-12-310001243429ifrs-full:TradeReceivablesMember2023-12-310001243429ifrs-full:TradeReceivablesMember2022-12-310001243429ifrs-full:TradeReceivablesMembermt:NAFTAMember2023-12-310001243429ifrs-full:TradeReceivablesMembermt:NAFTAMember2022-12-310001243429ifrs-full:TradeReceivablesMembermt:BrazilSegmentMember2023-12-310001243429ifrs-full:TradeReceivablesMembermt:BrazilSegmentMember2022-12-310001243429ifrs-full:TradeReceivablesMembermt:EuropeSegmentMember2023-12-310001243429ifrs-full:TradeReceivablesMembermt:EuropeSegmentMember2022-12-310001243429ifrs-full:TradeReceivablesMembermt:ACISMember2023-12-310001243429ifrs-full:TradeReceivablesMembermt:ACISMember2022-12-310001243429ifrs-full:TradeReceivablesMembermt:MiningMember2023-12-310001243429ifrs-full:TradeReceivablesMembermt:MiningMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:CurrentMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:CurrentMemberifrs-full:AccumulatedImpairmentMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:CurrentMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:CurrentMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:CurrentMemberifrs-full:AccumulatedImpairmentMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:CurrentMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:NotLaterThanOneMonthMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:NotLaterThanOneMonthMemberifrs-full:AccumulatedImpairmentMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:NotLaterThanOneMonthMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:NotLaterThanOneMonthMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:NotLaterThanOneMonthMemberifrs-full:AccumulatedImpairmentMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:NotLaterThanOneMonthMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMemberifrs-full:AccumulatedImpairmentMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMemberifrs-full:AccumulatedImpairmentMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanTwoMonthsAndNotLaterThanThreeMonthsMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:AccumulatedImpairmentMemberifrs-full:LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanTwoMonthsAndNotLaterThanThreeMonthsMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:AccumulatedImpairmentMemberifrs-full:LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:AccumulatedImpairmentMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:AccumulatedImpairmentMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanSixMonthsMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanSixMonthsMemberifrs-full:AccumulatedImpairmentMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanSixMonthsMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanSixMonthsMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanSixMonthsMemberifrs-full:AccumulatedImpairmentMember2022-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:LaterThanSixMonthsMember2022-12-310001243429ifrs-full:TradeReceivablesMember2021-12-310001243429ifrs-full:TradeReceivablesMember2020-12-310001243429ifrs-full:TradeReceivablesMember2023-01-012023-12-310001243429ifrs-full:TradeReceivablesMember2022-01-012022-12-310001243429ifrs-full:TradeReceivablesMember2021-01-012021-12-310001243429mt:SovereignFundGuaranteedReceivablesMember2023-12-310001243429mt:ArcelorMittalSulFluminenseMember2023-12-310001243429mt:ArcelorMittalSulFluminenseMember2022-12-310001243429ifrs-full:GoodwillMember2023-12-310001243429ifrs-full:GoodwillMember2022-12-310001243429mt:ConcessionsPatentsAndLicensesMember2023-12-310001243429mt:ConcessionsPatentsAndLicensesMember2022-12-310001243429ifrs-full:CustomerrelatedIntangibleAssetsMember2023-12-310001243429ifrs-full:CustomerrelatedIntangibleAssetsMember2022-12-310001243429mt:OtherIntangibleAssetsEmissionRightsMember2023-12-310001243429mt:OtherIntangibleAssetsEmissionRightsMember2022-12-310001243429ifrs-full:OtherIntangibleAssetsMember2023-12-310001243429ifrs-full:OtherIntangibleAssetsMember2022-12-310001243429mt:NAFTAMemberifrs-full:GoodwillMember2022-12-310001243429mt:NAFTAMemberifrs-full:GoodwillMember2023-01-012023-12-310001243429mt:NAFTAMemberifrs-full:GoodwillMember2023-12-310001243429mt:BrazilSegmentMemberifrs-full:GoodwillMember2022-12-310001243429mt:BrazilSegmentMemberifrs-full:GoodwillMember2023-01-012023-12-310001243429mt:BrazilSegmentMemberifrs-full:GoodwillMember2023-12-310001243429ifrs-full:GoodwillMembermt:EuropeSegmentMember2022-12-310001243429ifrs-full:GoodwillMembermt:EuropeSegmentMember2023-01-012023-12-310001243429ifrs-full:GoodwillMembermt:EuropeSegmentMember2023-12-310001243429ifrs-full:GoodwillMembermt:ACISMember2022-12-310001243429ifrs-full:GoodwillMembermt:ACISMember2023-01-012023-12-310001243429ifrs-full:GoodwillMembermt:ACISMember2023-12-310001243429ifrs-full:GoodwillMember2023-01-012023-12-310001243429mt:NAFTAMemberifrs-full:GoodwillMember2021-12-310001243429mt:NAFTAMemberifrs-full:GoodwillMember2022-01-012022-12-310001243429mt:BrazilSegmentMemberifrs-full:GoodwillMember2021-12-310001243429mt:BrazilSegmentMemberifrs-full:GoodwillMember2022-01-012022-12-310001243429ifrs-full:GoodwillMembermt:EuropeSegmentMember2021-12-310001243429ifrs-full:GoodwillMembermt:EuropeSegmentMember2022-01-012022-12-310001243429ifrs-full:GoodwillMembermt:ACISMember2021-12-310001243429ifrs-full:GoodwillMembermt:ACISMember2022-01-012022-12-310001243429ifrs-full:GoodwillMember2021-12-310001243429ifrs-full:GoodwillMember2022-01-012022-12-310001243429mt:ConcessionsPatentsAndLicensesMemberifrs-full:GrossCarryingAmountMember2021-12-310001243429ifrs-full:CustomerrelatedIntangibleAssetsMemberifrs-full:GrossCarryingAmountMember2021-12-310001243429ifrs-full:OtherIntangibleAssetsMemberifrs-full:GrossCarryingAmountMember2021-12-310001243429ifrs-full:GrossCarryingAmountMember2021-12-310001243429mt:ConcessionsPatentsAndLicensesMemberifrs-full:GrossCarryingAmountMember2022-01-012022-12-310001243429ifrs-full:CustomerrelatedIntangibleAssetsMemberifrs-full:GrossCarryingAmountMember2022-01-012022-12-310001243429ifrs-full:OtherIntangibleAssetsMemberifrs-full:GrossCarryingAmountMember2022-01-012022-12-310001243429ifrs-full:GrossCarryingAmountMember2022-01-012022-12-310001243429mt:ConcessionsPatentsAndLicensesMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:CustomerrelatedIntangibleAssetsMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:OtherIntangibleAssetsMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:ConcessionsPatentsAndLicensesMemberifrs-full:GrossCarryingAmountMember2023-01-012023-12-310001243429ifrs-full:CustomerrelatedIntangibleAssetsMemberifrs-full:GrossCarryingAmountMember2023-01-012023-12-310001243429ifrs-full:OtherIntangibleAssetsMemberifrs-full:GrossCarryingAmountMember2023-01-012023-12-310001243429ifrs-full:GrossCarryingAmountMember2023-01-012023-12-310001243429mt:ConcessionsPatentsAndLicensesMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429ifrs-full:CustomerrelatedIntangibleAssetsMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429ifrs-full:OtherIntangibleAssetsMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429ifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:ConcessionsPatentsAndLicensesMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMemberifrs-full:CustomerrelatedIntangibleAssetsMember2021-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMemberifrs-full:OtherIntangibleAssetsMember2021-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-12-310001243429mt:ConcessionsPatentsAndLicensesMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-01-012022-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMemberifrs-full:CustomerrelatedIntangibleAssetsMember2022-01-012022-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMemberifrs-full:OtherIntangibleAssetsMember2022-01-012022-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-01-012022-12-310001243429mt:ConcessionsPatentsAndLicensesMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMemberifrs-full:CustomerrelatedIntangibleAssetsMember2022-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMemberifrs-full:OtherIntangibleAssetsMember2022-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-12-310001243429mt:ConcessionsPatentsAndLicensesMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2023-01-012023-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMemberifrs-full:CustomerrelatedIntangibleAssetsMember2023-01-012023-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMemberifrs-full:OtherIntangibleAssetsMember2023-01-012023-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2023-01-012023-12-310001243429mt:ConcessionsPatentsAndLicensesMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2023-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMemberifrs-full:CustomerrelatedIntangibleAssetsMember2023-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMemberifrs-full:OtherIntangibleAssetsMember2023-12-310001243429ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2023-12-310001243429ifrs-full:OtherIntangibleAssetsMember2023-01-012023-12-310001243429ifrs-full:BuildingsMemberifrs-full:BottomOfRangeMember2023-01-012023-12-310001243429ifrs-full:BuildingsMemberifrs-full:TopOfRangeMember2023-01-012023-12-310001243429ifrs-full:BottomOfRangeMemberifrs-full:OtherPropertyPlantAndEquipmentMember2023-01-012023-12-310001243429ifrs-full:TopOfRangeMemberifrs-full:OtherPropertyPlantAndEquipmentMember2023-01-012023-12-310001243429mt:AuxiliaryFacilitiesMemberifrs-full:BottomOfRangeMember2023-01-012023-12-310001243429mt:AuxiliaryFacilitiesMemberifrs-full:TopOfRangeMember2023-01-012023-12-310001243429ifrs-full:BottomOfRangeMembermt:OtherFacilitiesMember2023-01-012023-12-310001243429ifrs-full:TopOfRangeMembermt:OtherFacilitiesMember2023-01-012023-12-310001243429srt:ScenarioForecastMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2024-01-012024-12-310001243429srt:ScenarioForecastMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2025-01-012025-12-310001243429srt:ScenarioForecastMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2026-01-012026-12-310001243429srt:ScenarioForecastMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2027-01-012027-12-310001243429srt:ScenarioForecastMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2028-01-012028-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:GrossCarryingAmountMember2021-12-310001243429mt:MachineryEquipmentAndOtherMemberifrs-full:GrossCarryingAmountMember2021-12-310001243429ifrs-full:ConstructionInProgressMemberifrs-full:GrossCarryingAmountMember2021-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:GrossCarryingAmountMember2021-12-310001243429ifrs-full:MiningAssetsMemberifrs-full:GrossCarryingAmountMember2021-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:GrossCarryingAmountMember2022-01-012022-12-310001243429mt:MachineryEquipmentAndOtherMemberifrs-full:GrossCarryingAmountMember2022-01-012022-12-310001243429ifrs-full:ConstructionInProgressMemberifrs-full:GrossCarryingAmountMember2022-01-012022-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:GrossCarryingAmountMember2022-01-012022-12-310001243429ifrs-full:MiningAssetsMemberifrs-full:GrossCarryingAmountMember2022-01-012022-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:MachineryEquipmentAndOtherMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:ConstructionInProgressMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:MiningAssetsMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:GrossCarryingAmountMember2023-01-012023-12-310001243429mt:MachineryEquipmentAndOtherMemberifrs-full:GrossCarryingAmountMember2023-01-012023-12-310001243429ifrs-full:ConstructionInProgressMemberifrs-full:GrossCarryingAmountMember2023-01-012023-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:GrossCarryingAmountMember2023-01-012023-12-310001243429ifrs-full:MiningAssetsMemberifrs-full:GrossCarryingAmountMember2023-01-012023-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:MachineryEquipmentAndOtherMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429ifrs-full:ConstructionInProgressMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429ifrs-full:MiningAssetsMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-12-310001243429mt:MachineryEquipmentAndOtherMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-12-310001243429ifrs-full:ConstructionInProgressMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-12-310001243429ifrs-full:MiningAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2021-12-310001243429ifrs-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:MiningAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-01-012022-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-12-310001243429mt:MachineryEquipmentAndOtherMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-12-310001243429ifrs-full:ConstructionInProgressMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-12-310001243429ifrs-full:MiningAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2022-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2023-01-012023-12-310001243429mt:MachineryEquipmentAndOtherMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2023-01-012023-12-310001243429ifrs-full:ConstructionInProgressMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2023-01-012023-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2023-01-012023-12-310001243429ifrs-full:MiningAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2023-01-012023-12-310001243429ifrs-full:LandAndBuildingsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2023-12-310001243429mt:MachineryEquipmentAndOtherMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2023-12-310001243429ifrs-full:ConstructionInProgressMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2023-12-310001243429ifrs-full:RightofuseAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2023-12-310001243429ifrs-full:MiningAssetsMemberifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember2023-12-310001243429ifrs-full:LandAndBuildingsMember2022-12-310001243429mt:MachineryEquipmentAndOtherMember2022-12-310001243429ifrs-full:ConstructionInProgressMember2022-12-310001243429ifrs-full:RightofuseAssetsMember2022-12-310001243429ifrs-full:MiningAssetsMember2022-12-310001243429ifrs-full:LandAndBuildingsMember2023-12-310001243429mt:MachineryEquipmentAndOtherMember2023-12-310001243429ifrs-full:ConstructionInProgressMember2023-12-310001243429ifrs-full:RightofuseAssetsMember2023-12-310001243429ifrs-full:MiningAssetsMember2023-12-310001243429mt:BrazilSegmentMember2023-12-310001243429mt:BrazilSegmentMember2022-12-310001243429mt:NAFTAMember2023-12-310001243429mt:NAFTAMember2022-12-310001243429mt:EuropeSegmentMember2023-12-310001243429mt:EuropeSegmentMember2022-12-310001243429mt:ACISMember2023-12-310001243429mt:ACISMember2022-12-310001243429ifrs-full:GoodwillMember2023-01-012023-12-310001243429ifrs-full:GoodwillMember2022-01-012022-12-310001243429ifrs-full:GoodwillMember2021-01-012021-12-310001243429ifrs-full:IntangibleAssetsAndGoodwillMember2023-01-012023-12-310001243429ifrs-full:IntangibleAssetsAndGoodwillMember2022-01-012022-12-310001243429ifrs-full:IntangibleAssetsAndGoodwillMember2021-01-012021-12-310001243429mt:TangibleAssetsMember2023-01-012023-12-310001243429mt:TangibleAssetsMember2022-01-012022-12-310001243429mt:TangibleAssetsMember2021-01-012021-12-310001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMemberifrs-full:BottomOfRangeMember2023-12-31mt:uSDPerTonne0001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMemberifrs-full:TopOfRangeMember2023-12-310001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMemberifrs-full:BottomOfRangeMember2022-12-310001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMemberifrs-full:TopOfRangeMember2022-12-310001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember2023-12-310001243429srt:EuropeMember2023-12-310001243429mt:NoLaterThanThreeYearsMember2023-05-172023-05-170001243429mt:NoLaterThanFourYearsMember2023-05-172023-05-170001243429mt:NoLaterThanFiveYearsMember2023-05-172023-05-170001243429mt:NoLaterThanSixYearsMember2023-05-172023-05-170001243429mt:NoLaterThanSevenYearsMember2023-05-172023-05-170001243429mt:NoLaterThanEightYearsMember2023-05-172023-05-170001243429mt:NoLaterThanNineYearsMember2023-05-172023-05-170001243429mt:NoLaterThanTenYearsMember2023-05-172023-05-170001243429mt:NoLaterThanElevenYearsMember2023-05-172023-05-170001243429mt:MarketPriceOfEmissionRightsMember2023-01-012023-12-310001243429srt:ScenarioForecastMember2024-01-012024-12-31iso4217:EURutr:t0001243429srt:ScenarioForecastMember2025-01-012025-12-310001243429srt:ScenarioForecastMember2026-01-012028-12-310001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMembermt:NAFTAMember2023-10-010001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMembermt:BrazilSegmentMember2023-10-010001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMembermt:EuropeSegmentMember2023-10-010001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMembermt:ACISMember2023-10-010001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMembermt:NAFTAMember2022-10-010001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMembermt:BrazilSegmentMember2022-10-010001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMembermt:EuropeSegmentMember2022-10-010001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMembermt:ACISMember2022-10-010001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember2021-10-012021-10-010001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember2022-10-012022-10-010001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember2023-01-012023-12-310001243429srt:ScenarioForecastMembercountry:UA2024-01-012024-12-310001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMembermt:ACISMember2023-12-310001243429ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMembermt:ACISMember2023-01-012023-12-31mt:basis_point00012434292023-12-312023-12-31mt:cash_generating_unit0001243429country:ZAmt:LongProductsSouthAfricaMember2023-12-072023-12-070001243429country:ZAmt:LongProductsSouthAfricaMember2023-12-310001243429country:ZAmt:LongProductsSouthAfricaMember2023-01-012023-12-310001243429country:ZAmt:LongProductsSouthAfricaMember2022-12-310001243429mt:ArcelorMittalKriviyRihMember2022-01-012022-12-310001243429mt:ArcelorMittalKriviyRihMembercountry:UA2022-12-310001243429mt:ArcelorMittalKriviyRihMembercountry:UA2022-01-012022-12-310001243429mt:AppliedTo2023Membermt:ArcelorMittalKriviyRihMembercountry:UA2022-12-310001243429mt:AppliedToSubsequentProjectionsMembermt:ArcelorMittalKriviyRihMembercountry:UA2022-12-310001243429mt:ArcelorMittalKriviyRihMembercountry:UA2021-12-310001243429mt:EuropeFlatProductsMembersrt:EuropeMembermt:Europe1Member2021-07-012021-12-310001243429mt:EuropeFlatProductsMembersrt:EuropeMembermt:Europe1Member2021-10-010001243429mt:EuropeFlatProductsMembersrt:EuropeMembermt:Europe1Member2020-10-010001243429mt:EuropeFlatProductsMembersrt:EuropeMembermt:Europe1Member2021-12-310001243429mt:NonFinancialAssetsMember2023-12-310001243429ifrs-full:FinancialAssetsAtAmortisedCostCategoryMembermt:FinancialAssets1Member2023-12-310001243429ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMembermt:FinancialAssets1Member2023-12-310001243429ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMembermt:FinancialAssets1Member2023-12-310001243429mt:DerivativesCategoryMembermt:FinancialAssets1Member2023-12-310001243429mt:NonFinancialLiabilitiesMember2023-12-310001243429mt:FinancialLiabilities1Memberifrs-full:FinancialLiabilitiesAtAmortisedCostCategoryMember2023-12-310001243429mt:FinancialLiabilities1Memberifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember2023-12-310001243429mt:FinancialLiabilities1Membermt:DerivativesCategoryMember2023-12-310001243429mt:NonFinancialAssetsMember2022-12-310001243429ifrs-full:FinancialAssetsAtAmortisedCostCategoryMembermt:FinancialAssets1Member2022-12-310001243429ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMembermt:FinancialAssets1Member2022-12-310001243429ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMembermt:FinancialAssets1Member2022-12-310001243429mt:DerivativesCategoryMembermt:FinancialAssets1Member2022-12-310001243429mt:NonFinancialLiabilitiesMember2022-12-310001243429mt:FinancialLiabilities1Memberifrs-full:FinancialLiabilitiesAtAmortisedCostCategoryMember2022-12-310001243429mt:FinancialLiabilities1Memberifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember2022-12-310001243429mt:FinancialLiabilities1Membermt:DerivativesCategoryMember2022-12-310001243429mt:InvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome1Memberifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level1OfFairValueHierarchyMember2023-12-310001243429mt:InvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome1Memberifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMember2023-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:InvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome1Memberifrs-full:RecurringFairValueMeasurementMember2023-12-310001243429mt:InvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome1Memberifrs-full:RecurringFairValueMeasurementMember2023-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level1OfFairValueHierarchyMembermt:TradeAndOtherCurrentReceivablesSubjectToTSRProgramsMember2023-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMembermt:TradeAndOtherCurrentReceivablesSubjectToTSRProgramsMember2023-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMembermt:TradeAndOtherCurrentReceivablesSubjectToTSRProgramsMember2023-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:TradeAndOtherCurrentReceivablesSubjectToTSRProgramsMember2023-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level1OfFairValueHierarchyMembermt:DerivativeFinancialAssetsCurrentMember2023-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:DerivativeFinancialAssetsCurrentMemberifrs-full:Level2OfFairValueHierarchyMember2023-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMembermt:DerivativeFinancialAssetsCurrentMember2023-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:DerivativeFinancialAssetsCurrentMember2023-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level1OfFairValueHierarchyMembermt:DerivativeFinancialAssetsNoncurrentMember2023-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMembermt:DerivativeFinancialAssetsNoncurrentMember2023-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMembermt:DerivativeFinancialAssetsNoncurrentMember2023-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:DerivativeFinancialAssetsNoncurrentMember2023-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level1OfFairValueHierarchyMember2023-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMember2023-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMember2023-12-310001243429ifrs-full:RecurringFairValueMeasurementMember2023-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:DerivativefinancialliabilitiescurrentMemberifrs-full:Level1OfFairValueHierarchyMember2023-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:DerivativefinancialliabilitiescurrentMemberifrs-full:Level2OfFairValueHierarchyMember2023-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMembermt:DerivativefinancialliabilitiescurrentMember2023-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:DerivativefinancialliabilitiescurrentMember2023-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level1OfFairValueHierarchyMembermt:DerivativefinancialliabilitiesnoncurrentMember2023-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMembermt:DerivativefinancialliabilitiesnoncurrentMember2023-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMembermt:DerivativefinancialliabilitiesnoncurrentMember2023-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:DerivativefinancialliabilitiesnoncurrentMember2023-12-310001243429mt:InvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome1Memberifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level1OfFairValueHierarchyMember2022-12-310001243429mt:InvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome1Memberifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:InvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome1Memberifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429mt:InvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome1Memberifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level1OfFairValueHierarchyMembermt:TradeAndOtherCurrentReceivablesSubjectToTSRProgramsMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMembermt:TradeAndOtherCurrentReceivablesSubjectToTSRProgramsMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMembermt:TradeAndOtherCurrentReceivablesSubjectToTSRProgramsMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:TradeAndOtherCurrentReceivablesSubjectToTSRProgramsMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level1OfFairValueHierarchyMembermt:DerivativeFinancialAssetsCurrentMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:DerivativeFinancialAssetsCurrentMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMembermt:DerivativeFinancialAssetsCurrentMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:DerivativeFinancialAssetsCurrentMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level1OfFairValueHierarchyMembermt:DerivativeFinancialAssetsNoncurrentMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMembermt:DerivativeFinancialAssetsNoncurrentMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMembermt:DerivativeFinancialAssetsNoncurrentMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:DerivativeFinancialAssetsNoncurrentMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level1OfFairValueHierarchyMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:DerivativefinancialliabilitiescurrentMemberifrs-full:Level1OfFairValueHierarchyMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:DerivativefinancialliabilitiescurrentMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMembermt:DerivativefinancialliabilitiescurrentMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:DerivativefinancialliabilitiescurrentMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level1OfFairValueHierarchyMembermt:DerivativefinancialliabilitiesnoncurrentMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMemberifrs-full:Level2OfFairValueHierarchyMembermt:DerivativefinancialliabilitiesnoncurrentMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:RecurringFairValueMeasurementMembermt:DerivativefinancialliabilitiesnoncurrentMember2022-12-310001243429ifrs-full:RecurringFairValueMeasurementMembermt:DerivativefinancialliabilitiesnoncurrentMember2022-12-310001243429ifrs-full:WeightedAverageMember2023-01-012023-12-310001243429ifrs-full:WeightedAverageMember2022-01-012022-12-310001243429mt:ShortTermBilateralCreditFacilitiesMember2023-12-310001243429mt:TwoPointTwoBillionBridgeTermFacilityMember2022-07-270001243429mt:TwoPointTwoBillionBridgeTermFacilityMember2022-07-272022-07-27mt:extension_option0001243429mt:TwoPointTwoBillionBridgeTermFacilityMember2022-12-080001243429mt:TwoPointTwoBillionBridgeTermFacilityMember2022-12-310001243429mt:DebtTransactionsMembermt:TwoPointTwoBillionBridgeTermFacilityMember2023-01-310001243429mt:CommercialPaper1Member2023-12-310001243429mt:CommercialPaper1Member2022-12-310001243429mt:FivePointFiveBillionRevolvingCreditFacilityDue20232025Member2023-12-310001243429mt:FivePointFiveBillionRevolvingCreditFacilityDue20232025Memberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:FivePointFiveBillionRevolvingCreditFacilityDue20232025Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:FiveHundredMillionEURUnsecuredNotesDue2023Member2023-12-310001243429mt:FiveHundredMillionEURUnsecuredNotesDue2023Memberifrs-full:FixedInterestRateMember2023-12-310001243429mt:FiveHundredMillionEURUnsecuredNotesDue2023Memberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:FiveHundredMillionEURUnsecuredNotesDue2023Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2023Member2023-12-310001243429ifrs-full:FixedInterestRateMembermt:SevenHundredFiftyMillionEURUnsecuredNotesDue2023Member2023-12-310001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2023Memberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2023Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:OneBillionEURUnsecuredNotesDue2024Member2023-12-310001243429mt:OneBillionEURUnsecuredNotesDue2024Memberifrs-full:FixedInterestRateMember2023-12-310001243429mt:OneBillionEURUnsecuredNotesDue2024Memberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:OneBillionEURUnsecuredNotesDue2024Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:SevenHundredFiftyMillionUnsecuredNotesDue2024Member2023-12-310001243429ifrs-full:FixedInterestRateMembermt:SevenHundredFiftyMillionUnsecuredNotesDue2024Member2023-12-310001243429mt:SevenHundredFiftyMillionUnsecuredNotesDue2024Memberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:SevenHundredFiftyMillionUnsecuredNotesDue2024Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:FiveHundredMillionUnsecuredNotesDue2025Member2023-12-310001243429ifrs-full:FixedInterestRateMembermt:FiveHundredMillionUnsecuredNotesDue2025Member2023-12-310001243429mt:FiveHundredMillionUnsecuredNotesDue2025Memberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:FiveHundredMillionUnsecuredNotesDue2025Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2025Member2023-12-310001243429ifrs-full:FixedInterestRateMembermt:SevenHundredFiftyMillionEURUnsecuredNotesDue2025Member2023-12-310001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2025Memberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2025Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:SevenHundredFiftyMillionUnsecuredNotesDue2026Member2023-12-310001243429ifrs-full:FixedInterestRateMembermt:SevenHundredFiftyMillionUnsecuredNotesDue2026Member2023-12-310001243429mt:SevenHundredFiftyMillionUnsecuredNotesDue2026Memberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:SevenHundredFiftyMillionUnsecuredNotesDue2026Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:SixHundredMillionEURUnsecuredNotesDue2026Member2023-12-310001243429mt:SixHundredMillionEURUnsecuredNotesDue2026Memberifrs-full:FixedInterestRateMember2023-12-310001243429mt:SixHundredMillionEURUnsecuredNotesDue2026Memberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:SixHundredMillionEURUnsecuredNotesDue2026Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:OnePointTwoBillionUnsecuredNotesDue2027Member2023-12-310001243429mt:OnePointTwoBillionUnsecuredNotesDue2027Memberifrs-full:FixedInterestRateMember2023-12-310001243429mt:OnePointTwoBillionUnsecuredNotesDue2027Memberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:OnePointTwoBillionUnsecuredNotesDue2027Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:FiveHundredMillionUnsecuredNotesDue2029Member2023-12-310001243429ifrs-full:FixedInterestRateMembermt:FiveHundredMillionUnsecuredNotesDue2029Member2023-12-310001243429mt:FiveHundredMillionUnsecuredNotesDue2029Memberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:FiveHundredMillionUnsecuredNotesDue2029Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:OneBillionUnsecuredNotesDue2032Member2023-12-310001243429ifrs-full:FixedInterestRateMembermt:OneBillionUnsecuredNotesDue2032Member2023-12-310001243429mt:OneBillionUnsecuredNotesDue2032Memberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:OneBillionUnsecuredNotesDue2032Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:OnePointFiveBillionUnsecuredBondsDue2039Member2023-12-310001243429mt:OnePointFiveBillionUnsecuredBondsDue2039Memberifrs-full:FixedInterestRateMember2023-12-310001243429mt:OnePointFiveBillionUnsecuredBondsDue2039Memberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:OnePointFiveBillionUnsecuredBondsDue2039Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:OneBillionUnsecuredNotesDue2041Member2023-12-310001243429ifrs-full:FixedInterestRateMembermt:OneBillionUnsecuredNotesDue2041Member2023-12-310001243429mt:OneBillionUnsecuredNotesDue2041Memberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:OneBillionUnsecuredNotesDue2041Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:FixedInterestRateMembermt:EIBLoanDue2025Member2023-12-310001243429mt:EIBLoanDue2025Memberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:EIBLoanDue2025Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:EIBLoanDue2032Memberifrs-full:FloatingInterestRateMember2023-12-310001243429mt:EIBLoanDue2032Memberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:EIBLoanDue2032Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:BottomOfRangeMemberifrs-full:FixedInterestRateMembermt:SchuldscheinLoansMember2023-12-310001243429ifrs-full:TopOfRangeMemberifrs-full:FixedInterestRateMembermt:SchuldscheinLoansMember2023-12-310001243429ifrs-full:FixedInterestRateMembermt:SchuldscheinLoansMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429ifrs-full:FixedInterestRateMembermt:SchuldscheinLoansMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:BottomOfRangeMemberifrs-full:FloatingInterestRateMembermt:SchuldscheinLoansMember2023-12-310001243429ifrs-full:TopOfRangeMemberifrs-full:FloatingInterestRateMembermt:SchuldscheinLoansMember2023-12-310001243429ifrs-full:FloatingInterestRateMembermt:SchuldscheinLoansMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429ifrs-full:FloatingInterestRateMembermt:SchuldscheinLoansMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:OtherLoansDue2023Memberifrs-full:FixedInterestRateMember2023-12-310001243429mt:OtherLoansDue2023Memberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:OtherLoansDue2023Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:BottomOfRangeMemberifrs-full:FloatingInterestRateMembermt:OtherLoansDue20292035Member2023-12-310001243429ifrs-full:TopOfRangeMemberifrs-full:FloatingInterestRateMembermt:OtherLoansDue20292035Member2023-12-310001243429ifrs-full:GrossCarryingAmountMembermt:OtherLoansDue20292035Member2023-12-310001243429ifrs-full:GrossCarryingAmountMembermt:OtherLoansDue20292035Member2022-12-310001243429mt:CorporateBorrowingsMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:CorporateBorrowingsMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:BottomOfRangeMembermt:OtherLoansFixedFloatingDue20242030Membersrt:AmericasMembermt:FixedFloatingInterestRatesMember2023-12-310001243429ifrs-full:TopOfRangeMembermt:OtherLoansFixedFloatingDue20242030Membersrt:AmericasMembermt:FixedFloatingInterestRatesMember2023-12-310001243429mt:OtherLoansFixedFloatingDue20242030Membersrt:AmericasMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:OtherLoansFixedFloatingDue20242030Membersrt:AmericasMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429srt:AmericasMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429srt:AmericasMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:BottomOfRangeMembermt:EBRDFacilityFloatingDueIn20242026Memberifrs-full:FloatingInterestRateMember2023-12-310001243429ifrs-full:TopOfRangeMembermt:EBRDFacilityFloatingDueIn20242026Memberifrs-full:FloatingInterestRateMember2023-12-310001243429mt:EBRDFacilityFloatingDueIn20242026Membermt:EuropeAsiaAndAfricaMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:EBRDFacilityFloatingDueIn20242026Membermt:EuropeAsiaAndAfricaMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:BottomOfRangeMembermt:OtherLoansFixedFloatingDue20232043Membermt:FixedFloatingInterestRatesMember2023-12-310001243429ifrs-full:TopOfRangeMembermt:OtherLoansFixedFloatingDue20232043Membermt:FixedFloatingInterestRatesMember2023-12-310001243429mt:EuropeAsiaAndAfricaMembermt:OtherLoansFixedFloatingDue20232043Memberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:EuropeAsiaAndAfricaMembermt:OtherLoansFixedFloatingDue20232043Memberifrs-full:GrossCarryingAmountMember2022-12-310001243429mt:EuropeAsiaAndAfricaMemberifrs-full:GrossCarryingAmountMember2023-12-310001243429mt:EuropeAsiaAndAfricaMemberifrs-full:GrossCarryingAmountMember2022-12-310001243429ifrs-full:GrossCarryingAmountMembermt:LongTermBorrowingsIncludingCurrentPortionMember2023-12-310001243429ifrs-full:GrossCarryingAmountMembermt:LongTermBorrowingsIncludingCurrentPortionMember2022-12-310001243429mt:LongTermDebtExcludingLeaseObligationMember2023-12-310001243429mt:LongTermDebtExcludingLeaseObligationMember2022-12-310001243429ifrs-full:LeaseLiabilitiesMember2023-12-310001243429ifrs-full:LeaseLiabilitiesMember2022-12-310001243429mt:FivePointFiveBillionRevolvingCreditFacilityDue20232025Member2018-12-190001243429mt:FivePointFiveBillionRevolvingCreditFacilityDue20232025Member2018-12-192018-12-190001243429mt:FivePointFiveBillionRevolvingCreditFacilityDue20232025Member2023-12-190001243429mt:TwoThousandAndTenRevolvingMulticurrencyLetterOfCreditFacilityMember2010-09-300001243429mt:TwoThousandAndTenRevolvingMulticurrencyLetterOfCreditFacilityMember2012-10-260001243429mt:TwoThousandAndTenRevolvingMulticurrencyLetterOfCreditFacilityMember2014-09-300001243429mt:RevolvingMulticurrencyLetterOfCreditFacilityDueIn2022Member2019-07-310001243429mt:TwoThousandAndTenRevolvingMulticurrencyLetterOfCreditFacilityMember2020-11-250001243429mt:FiveHundredMillionEURUnsecuredNotesDue2023Member2023-01-172023-01-170001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2023Member2023-05-192023-05-190001243429mt:OneBillionEURUnsecuredNotesDue2024Membermt:RepaymentOfDebtMember2024-01-172024-01-170001243429mt:OneBillionEURUnsecuredNotesDue2024Membermt:RepaymentOfDebtMember2024-01-170001243429mt:TwoHundredFiftyMillionEURUnsecuredNotesDue2024Member2023-12-310001243429mt:NetCarryingAmountMembermt:TwoHundredFiftyMillionEURUnsecuredNotesDue2024Member2023-12-310001243429mt:TwoHundredFiftyMillionEURUnsecuredNotesDue2024Memberifrs-full:FixedInterestRateMember2023-12-310001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2024Member2023-12-310001243429mt:NetCarryingAmountMembermt:SevenHundredFiftyMillionEURUnsecuredNotesDue2024Member2023-12-310001243429mt:SevenHundredFiftyMillionEURUnsecuredNotesDue2024Memberifrs-full:FixedInterestRateMember2023-12-310001243429mt:NetCarryingAmountMembermt:SevenHundredFiftyMillionUnsecuredNotesDue2024Member2023-12-310001243429mt:NetCarryingAmountMembermt:FiveHundredMillionUnsecuredNotesDue2025Member2023-12-310001243429mt:NetCarryingAmountMembermt:SevenHundredFiftyMillionEURUnsecuredNotesDue2025Member2023-12-310001243429mt:NetCarryingAmountMembermt:SevenHundredFiftyMillionUnsecuredNotesDue2026Member2023-12-310001243429mt:NetCarryingAmountMembermt:SixHundredMillionEURUnsecuredNotesDue2026Member2023-12-310001243429mt:NetCarryingAmountMembermt:OnePointTwoBillionUnsecuredNotesDue2027Member2023-12-310001243429mt:NetCarryingAmountMembermt:FiveHundredMillionUnsecuredNotesDue2029Member2023-12-310001243429mt:NetCarryingAmountMembermt:OneBillionUnsecuredNotesDue2032Member2023-12-310001243429mt:NetCarryingAmountMembermt:OneBillionUnsecuredBondsDue2039Member2023-12-310001243429ifrs-full:FixedInterestRateMembermt:OneBillionUnsecuredBondsDue2039Member2023-12-310001243429mt:OneBillionUnsecuredBondsDue2039Member2023-12-310001243429mt:FiveHundredMillionUnsecuredBondsDue2039Member2023-12-310001243429mt:NetCarryingAmountMembermt:FiveHundredMillionUnsecuredBondsDue2039Member2023-12-310001243429ifrs-full:FixedInterestRateMembermt:FiveHundredMillionUnsecuredBondsDue2039Member2023-12-310001243429mt:NetCarryingAmountMembermt:OneBillionUnsecuredNotesDue2041Member2023-12-310001243429mt:EIBLoanMember2021-06-020001243429mt:EIBLoanMember2023-12-310001243429mt:EIBLoanDue2025Member2016-12-160001243429mt:EIBLoanDue2025Member2023-12-310001243429mt:ThreeHundredAndFortySixPointFiveMillionEuroVariableRateLoanSchuldscheinMarketMember2022-05-040001243429mt:TwentyFourPointFiveMillionEuroFixedRateLoanSchuldscheinMarketMember2022-05-040001243429mt:TwoHunderdSixtyThreeMillionEuroVariableLoanSchuldscheinMarketMember2022-05-040001243429mt:SixtySixMillionEuroFixedRateLoanSchuldscheinMarketMember2022-05-040001243429mt:TwentyFiveMillionEuroFixedRateLoanSchuldscheinMarketMember2022-05-060001243429mt:SchuldscheinLoansMember2023-12-310001243429mt:TwoHundredThirtyFiveMillionEURFacilityAgreementMember2018-12-210001243429mt:TwoHundredThirtyFiveMillionEURFacilityAgreementMember2023-12-310001243429mt:OneHundredAndThirtyMillionCADFinancingAgreementDue20212023Member2021-11-290001243429mt:PJSCArcelorMittalKryvyiRihMembermt:EBRDFacilityFloatingDueIn20242026Member2017-12-210001243429mt:PJSCArcelorMittalKryvyiRihMembermt:EBRDFacilityFloatingDueIn20242026Member2023-12-310001243429mt:EuropeanBankForReconstructionAndDevelopmentEBRD2022Member2022-12-150001243429mt:EuropeanBankForReconstructionAndDevelopmentEBRD2022Member2023-12-310001243429mt:EuropeanBankForReconstructionAndDevelopmentEBRD2023Member2023-11-170001243429mt:EuropeanBankForReconstructionAndDevelopmentEBRD2023Member2023-12-310001243429mt:EuropeanBankForReconstructionAndDevelopmentEBRD2024Member2023-12-310001243429mt:FourPointFiveBillionSouthAfricaRandRevolvingBorrowingBaseFinanceFacilityDueIn2022Membermt:ArcelorMittalSouthAfricaLtd.Member2017-05-25iso4217:ZAR0001243429mt:ArcelorMittalSouthAfricaLtd.Membermt:ThreePointFiveBillionSouthAfricaRandRevolvingBorrowingBaseFinanceFacilityDueIn2023Member2021-08-230001243429mt:ArcelorMittalSouthAfricaLtd.Membermt:ThreePointFiveBillionSouthAfricaRandRevolvingBorrowingBaseFinanceFacilityDueIn2023Member2023-08-300001243429mt:FourPointFiveBillionSouthAfricaRandRevolvingBorrowingBaseFinanceFacilityDueIn2022Membermt:ArcelorMittalSouthAfricaLtd.Member2023-12-310001243429ifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2023-12-310001243429ifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2022-12-310001243429ifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2023-01-012023-12-310001243429ifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2022-01-012022-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember2023-12-310001243429ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember2023-12-310001243429ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember2023-12-310001243429ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember2023-12-310001243429ifrs-full:LaterThanFiveYearsMember2023-12-310001243429ifrs-full:FixedInterestRateMembermt:LongTermBorrowingsIncludingCurrentPortionMember2023-12-310001243429ifrs-full:FixedInterestRateMemberifrs-full:Level1OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMember2023-12-310001243429ifrs-full:FixedInterestRateMemberifrs-full:Level2OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMember2023-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:FixedInterestRateMembermt:LongTermBorrowingsIncludingCurrentPortionMember2023-12-310001243429mt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:FloatingInterestRateMember2023-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:FloatingInterestRateMember2023-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:FloatingInterestRateMember2023-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:FloatingInterestRateMember2023-12-310001243429mt:LongTermBorrowingsIncludingCurrentPortionMember2023-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMember2023-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMember2023-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMember2023-12-310001243429mt:CurrentBorrowingsMember2023-12-310001243429mt:CurrentBorrowingsMemberifrs-full:Level1OfFairValueHierarchyMember2023-12-310001243429mt:CurrentBorrowingsMemberifrs-full:Level2OfFairValueHierarchyMember2023-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:CurrentBorrowingsMember2023-12-310001243429ifrs-full:FixedInterestRateMembermt:LongTermBorrowingsIncludingCurrentPortionMember2022-12-310001243429ifrs-full:FixedInterestRateMemberifrs-full:Level1OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMember2022-12-310001243429ifrs-full:FixedInterestRateMemberifrs-full:Level2OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:FixedInterestRateMembermt:LongTermBorrowingsIncludingCurrentPortionMember2022-12-310001243429mt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:FloatingInterestRateMember2022-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:FloatingInterestRateMember2022-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:FloatingInterestRateMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMemberifrs-full:FloatingInterestRateMember2022-12-310001243429mt:LongTermBorrowingsIncludingCurrentPortionMember2022-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMember2022-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:LongTermBorrowingsIncludingCurrentPortionMember2022-12-310001243429mt:CurrentBorrowingsMember2022-12-310001243429mt:CurrentBorrowingsMemberifrs-full:Level1OfFairValueHierarchyMember2022-12-310001243429mt:CurrentBorrowingsMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMembermt:CurrentBorrowingsMember2022-12-310001243429mt:ArcelorMittalSouthAfricaLtd.Member2023-12-310001243429mt:ArcelorMittalSouthAfricaLtd.Member2022-12-310001243429ifrs-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:ShorttermBorrowingsMember2022-12-310001243429ifrs-full:LongtermBorrowingsMember2023-01-012023-12-310001243429ifrs-full:ShorttermBorrowingsMember2023-01-012023-12-310001243429ifrs-full:LongtermBorrowingsMember2023-12-310001243429ifrs-full:ShorttermBorrowingsMember2023-12-310001243429currency:EUR2023-12-310001243429currency:USD2023-12-310001243429currency:ARS2023-12-310001243429currency:BRL2023-12-310001243429currency:INR2023-12-310001243429mt:OtherCurrenciesMember2023-12-310001243429currency:EUR2022-12-310001243429currency:USD2022-12-310001243429currency:ARS2022-12-310001243429currency:BRL2022-12-310001243429currency:INR2022-12-310001243429mt:OtherCurrenciesMember2022-12-310001243429mt:OtherInterestRateInstrumentsMemberifrs-full:Level2OfFairValueHierarchyMember2023-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:TotalInterestRateInstrumentsMember2023-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:ForwardPurchaseContractMember2023-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:ForwardSalesContractMember2023-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:ExchangeOptionPurchasesMember2023-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:ExchangeOptionSalesMember2023-12-310001243429mt:ForeignExchangeRateInstrumentsMemberifrs-full:Level2OfFairValueHierarchyMember2023-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:TermContractsSalesMember2023-12-310001243429mt:TermContractsPurchasesMemberifrs-full:Level2OfFairValueHierarchyMember2023-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:OptionsSalesPurchasesMember2023-12-310001243429mt:RawMaterialsFreightEnergyEmissionRightsMemberifrs-full:Level2OfFairValueHierarchyMember2023-12-310001243429ifrs-full:Level2OfFairValueHierarchyMember2023-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:ForwardPurchaseContractMember2022-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:ForwardSalesContractMember2022-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:ExchangeOptionPurchasesMember2022-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:ExchangeOptionSalesMember2022-12-310001243429mt:ForeignExchangeRateInstrumentsMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:TermContractsSalesMember2022-12-310001243429mt:TermContractsPurchasesMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:OptionsSalesPurchasesMember2022-12-310001243429mt:RawMaterialsFreightEnergyEmissionRightsMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429mt:NaturalGasForwardPurchaseContractMember2022-12-310001243429mt:EmissionRightsForwardPurchaseContractMember2022-12-310001243429mt:EmissionRightsForwardPurchaseContractMember2022-01-012022-12-310001243429mt:OtherIntangibleAssetsEmissionRightsMembermt:EmissionRightsForwardPurchaseContractMember2022-12-310001243429mt:CallOption1Member2023-12-310001243429mt:MandatorilyConvertibleUnsecuredUnsubordinatedBondsMember2023-03-14mt:bonds0001243429mt:MandatorilyConvertibleUnsecuredUnsubordinatedBondsMember2023-12-312023-12-310001243429mt:MandatorilyConvertibleUnsecuredUnsubordinatedBondsMember2022-12-312022-12-310001243429mt:MandatorilyConvertibleUnsecuredUnsubordinatedBondsMember2023-01-012023-12-310001243429mt:MandatorilyConvertibleUnsecuredUnsubordinatedBondsMember2022-01-012022-12-310001243429mt:TenPercentIncreaseInHeraErmacSharePricesMember2023-12-310001243429mt:TenPercentDecreaseInHeraErmacSharePricesMember2023-12-310001243429ifrs-full:OptionContractMember2023-01-012023-12-310001243429mt:TenPercentIncreaseInForwardPricesMember2023-12-310001243429mt:TenPercentDecreaseInForwardPricesMember2023-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:OptionContractMember2021-12-310001243429mt:CallOption1Memberifrs-full:Level3OfFairValueHierarchyMember2021-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:OptionContractMember2022-01-012022-12-310001243429mt:CallOption1Memberifrs-full:Level3OfFairValueHierarchyMember2022-01-012022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:OptionContractMember2022-12-310001243429mt:CallOption1Memberifrs-full:Level3OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:OptionContractMember2023-01-012023-12-310001243429mt:CallOption1Memberifrs-full:Level3OfFairValueHierarchyMember2023-01-012023-12-310001243429ifrs-full:Level3OfFairValueHierarchyMemberifrs-full:OptionContractMember2023-12-310001243429mt:CallOption1Memberifrs-full:Level3OfFairValueHierarchyMember2023-12-310001243429ifrs-full:FixedInterestRateMemberifrs-full:InterestRateRiskMember2023-12-310001243429ifrs-full:FloatingInterestRateMemberifrs-full:InterestRateRiskMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:CurrencyRiskMembercurrency:USD2023-12-310001243429ifrs-full:CurrencyRiskMembercurrency:USDmt:TradePayablesMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:CurrencyRiskMembercurrency:EUR2023-12-310001243429ifrs-full:CurrencyRiskMembermt:TradePayablesMembercurrency:EUR2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:CurrencyRiskMembercurrency:BRL2023-12-310001243429ifrs-full:CurrencyRiskMembermt:TradePayablesMembercurrency:BRL2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:CurrencyRiskMembercurrency:CAD2023-12-310001243429ifrs-full:CurrencyRiskMembercurrency:CADmt:TradePayablesMember2023-12-310001243429currency:GBPifrs-full:TradeReceivablesMemberifrs-full:CurrencyRiskMember2023-12-310001243429currency:GBPifrs-full:CurrencyRiskMembermt:TradePayablesMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:CurrencyRiskMembercurrency:ZAR2023-12-310001243429ifrs-full:CurrencyRiskMembermt:TradePayablesMembercurrency:ZAR2023-12-310001243429currency:MXNifrs-full:TradeReceivablesMemberifrs-full:CurrencyRiskMember2023-12-310001243429currency:MXNifrs-full:CurrencyRiskMembermt:TradePayablesMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:CurrencyRiskMembercurrency:UAH2023-12-310001243429ifrs-full:CurrencyRiskMembermt:TradePayablesMembercurrency:UAH2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:CurrencyRiskMembercurrency:PLN2023-12-310001243429ifrs-full:CurrencyRiskMembermt:TradePayablesMembercurrency:PLN2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:CurrencyRiskMembercurrency:ARS2023-12-310001243429ifrs-full:CurrencyRiskMembercurrency:ARSmt:TradePayablesMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:CurrencyRiskMembermt:OtherCurrenciesMember2023-12-310001243429ifrs-full:CurrencyRiskMembermt:TradePayablesMembermt:OtherCurrenciesMember2023-12-310001243429ifrs-full:TradeReceivablesMemberifrs-full:CurrencyRiskMember2023-12-310001243429ifrs-full:CurrencyRiskMembermt:TradePayablesMember2023-12-310001243429ifrs-full:CurrencyRiskMembercurrency:EUR2023-12-310001243429ifrs-full:CurrencyRiskMembercurrency:BRL2023-12-310001243429ifrs-full:CurrencyRiskMembercurrency:CAD2023-12-310001243429currency:GBPifrs-full:CurrencyRiskMember2023-12-310001243429ifrs-full:CurrencyRiskMembercurrency:ZAR2023-12-310001243429currency:MXNifrs-full:CurrencyRiskMember2023-12-310001243429ifrs-full:CurrencyRiskMembercurrency:UAH2023-12-310001243429ifrs-full:CurrencyRiskMembercurrency:PLN2023-12-310001243429ifrs-full:CurrencyRiskMembercurrency:ARS2023-12-310001243429ifrs-full:LiquidityRiskMember2023-12-310001243429ifrs-full:NotLaterThanOneYearMemberifrs-full:LiquidityRiskMember2023-12-310001243429ifrs-full:LiquidityRiskMemberifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember2023-12-310001243429ifrs-full:LiquidityRiskMemberifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember2023-12-310001243429ifrs-full:LiquidityRiskMemberifrs-full:LaterThanFiveYearsMember2023-12-310001243429ifrs-full:LiquidityRiskMembermt:ForeignExchangeContract1Member2023-12-310001243429ifrs-full:NotLaterThanOneYearMemberifrs-full:LiquidityRiskMembermt:ForeignExchangeContract1Member2023-12-310001243429ifrs-full:LiquidityRiskMembermt:ForeignExchangeContract1Memberifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember2023-12-310001243429ifrs-full:LiquidityRiskMembermt:ForeignExchangeContract1Memberifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember2023-12-310001243429ifrs-full:LiquidityRiskMembermt:ForeignExchangeContract1Memberifrs-full:LaterThanFiveYearsMember2023-12-310001243429ifrs-full:LiquidityRiskMembermt:CommodityContract1Member2023-12-310001243429ifrs-full:NotLaterThanOneYearMemberifrs-full:LiquidityRiskMembermt:CommodityContract1Member2023-12-310001243429ifrs-full:LiquidityRiskMembermt:CommodityContract1Memberifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember2023-12-310001243429ifrs-full:LiquidityRiskMembermt:CommodityContract1Memberifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember2023-12-310001243429ifrs-full:LiquidityRiskMemberifrs-full:LaterThanFiveYearsMembermt:CommodityContract1Member2023-12-310001243429ifrs-full:LiquidityRiskMember2022-12-310001243429ifrs-full:NotLaterThanOneYearMemberifrs-full:LiquidityRiskMember2022-12-310001243429ifrs-full:LiquidityRiskMemberifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember2022-12-310001243429ifrs-full:LiquidityRiskMemberifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember2022-12-310001243429ifrs-full:LiquidityRiskMemberifrs-full:LaterThanFiveYearsMember2022-12-310001243429ifrs-full:LiquidityRiskMembermt:ForeignExchangeContract1Member2022-12-310001243429ifrs-full:NotLaterThanOneYearMemberifrs-full:LiquidityRiskMembermt:ForeignExchangeContract1Member2022-12-310001243429ifrs-full:LiquidityRiskMembermt:ForeignExchangeContract1Memberifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember2022-12-310001243429ifrs-full:LiquidityRiskMembermt:ForeignExchangeContract1Memberifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember2022-12-310001243429ifrs-full:LiquidityRiskMembermt:ForeignExchangeContract1Memberifrs-full:LaterThanFiveYearsMember2022-12-310001243429ifrs-full:LiquidityRiskMembermt:CommodityContract1Member2022-12-310001243429ifrs-full:NotLaterThanOneYearMemberifrs-full:LiquidityRiskMembermt:CommodityContract1Member2022-12-310001243429ifrs-full:LiquidityRiskMembermt:CommodityContract1Memberifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember2022-12-310001243429ifrs-full:LiquidityRiskMembermt:CommodityContract1Memberifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember2022-12-310001243429ifrs-full:LiquidityRiskMemberifrs-full:LaterThanFiveYearsMembermt:CommodityContract1Member2022-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2023-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMemberifrs-full:NotLaterThanThreeMonthsMember2023-12-310001243429ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2023-12-310001243429ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2023-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMemberifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember2023-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMembermt:LaterThanTwoYearsMember2023-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2023-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMemberifrs-full:NotLaterThanThreeMonthsMember2023-12-310001243429mt:CommodityContract1Memberifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:CashFlowHedgesMember2023-12-310001243429ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMembermt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2023-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMemberifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember2023-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMembermt:LaterThanTwoYearsMember2023-12-310001243429ifrs-full:CashFlowHedgesMembermt:EmissionRightsMember2023-12-310001243429ifrs-full:CashFlowHedgesMemberifrs-full:NotLaterThanThreeMonthsMembermt:EmissionRightsMember2023-12-310001243429ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:CashFlowHedgesMembermt:EmissionRightsMember2023-12-310001243429ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMemberifrs-full:CashFlowHedgesMembermt:EmissionRightsMember2023-12-310001243429ifrs-full:CashFlowHedgesMemberifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMembermt:EmissionRightsMember2023-12-310001243429ifrs-full:CashFlowHedgesMembermt:LaterThanTwoYearsMembermt:EmissionRightsMember2023-12-310001243429ifrs-full:CashFlowHedgesMember2023-12-310001243429ifrs-full:CashFlowHedgesMemberifrs-full:NotLaterThanThreeMonthsMember2023-12-310001243429ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:CashFlowHedgesMember2023-12-310001243429ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMemberifrs-full:CashFlowHedgesMember2023-12-310001243429ifrs-full:CashFlowHedgesMemberifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember2023-12-310001243429ifrs-full:CashFlowHedgesMembermt:LaterThanTwoYearsMember2023-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMemberifrs-full:NotLaterThanThreeMonthsMember2022-12-310001243429ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMemberifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember2022-12-310001243429mt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMembermt:LaterThanTwoYearsMember2022-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMemberifrs-full:NotLaterThanThreeMonthsMember2022-12-310001243429mt:CommodityContract1Memberifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMembermt:CommodityContract1Memberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMemberifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember2022-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMembermt:LaterThanTwoYearsMember2022-12-310001243429ifrs-full:CashFlowHedgesMembermt:EmissionRightsMember2022-12-310001243429ifrs-full:CashFlowHedgesMemberifrs-full:NotLaterThanThreeMonthsMembermt:EmissionRightsMember2022-12-310001243429ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:CashFlowHedgesMembermt:EmissionRightsMember2022-12-310001243429ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMemberifrs-full:CashFlowHedgesMembermt:EmissionRightsMember2022-12-310001243429ifrs-full:CashFlowHedgesMemberifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMembermt:EmissionRightsMember2022-12-310001243429ifrs-full:CashFlowHedgesMembermt:LaterThanTwoYearsMembermt:EmissionRightsMember2022-12-310001243429ifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:CashFlowHedgesMemberifrs-full:NotLaterThanThreeMonthsMember2022-12-310001243429ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMemberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:CashFlowHedgesMemberifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember2022-12-310001243429ifrs-full:CashFlowHedgesMembermt:LaterThanTwoYearsMember2022-12-310001243429mt:DerivativeContractEquityMethodInvestmentsMemberifrs-full:CashFlowHedgesMember2023-12-310001243429mt:DerivativeContractEquityMethodInvestmentsMemberifrs-full:CashFlowHedgesMember2022-12-310001243429mt:DerivativeContractEquityMethodInvestmentsMemberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:CurrencyRiskMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMembermt:PrepaymentsAndOtherCurrentAssetsAndAccruedExpensesAndOtherLiabilitiesMember2023-12-310001243429ifrs-full:CurrencyRiskMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMembermt:OtherAssetsAndOtherLongTermObligationsMember2023-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMembermt:PrepaymentsAndOtherCurrentAssetsAndAccruedExpensesAndOtherLiabilitiesMemberifrs-full:CommodityPriceRiskMember2023-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMemberifrs-full:CommodityPriceRiskMembermt:OtherAssetsAndOtherLongTermObligationsMember2023-12-310001243429ifrs-full:CashFlowHedgesMembermt:PrepaymentsAndOtherCurrentAssetsAndAccruedExpensesAndOtherLiabilitiesMemberifrs-full:CommodityPriceRiskMembermt:EmissionRightsMember2023-12-310001243429mt:OtherHedgesMember2023-12-310001243429ifrs-full:CurrencyRiskMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2022-12-310001243429ifrs-full:CurrencyRiskMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2023-01-012023-12-310001243429ifrs-full:CurrencyRiskMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2023-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMemberifrs-full:CommodityPriceRiskMember2022-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMemberifrs-full:CommodityPriceRiskMember2023-01-012023-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMemberifrs-full:CommodityPriceRiskMember2023-12-310001243429ifrs-full:CashFlowHedgesMemberifrs-full:CommodityPriceRiskMembermt:EmissionRightsMember2022-12-310001243429ifrs-full:CashFlowHedgesMemberifrs-full:CommodityPriceRiskMembermt:EmissionRightsMember2023-01-012023-12-310001243429ifrs-full:CashFlowHedgesMemberifrs-full:CommodityPriceRiskMembermt:EmissionRightsMember2023-12-310001243429ifrs-full:CashFlowHedgesMember2023-01-012023-12-310001243429ifrs-full:CurrencyRiskMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMembermt:PrepaymentsAndOtherCurrentAssetsAndAccruedExpensesAndOtherLiabilitiesMember2022-12-310001243429ifrs-full:CurrencyRiskMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMembermt:OtherAssetsAndOtherLongTermObligationsMember2022-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMembermt:PrepaymentsAndOtherCurrentAssetsAndAccruedExpensesAndOtherLiabilitiesMemberifrs-full:CommodityPriceRiskMember2022-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMemberifrs-full:CommodityPriceRiskMembermt:OtherAssetsAndOtherLongTermObligationsMember2022-12-310001243429ifrs-full:CashFlowHedgesMembermt:PrepaymentsAndOtherCurrentAssetsAndAccruedExpensesAndOtherLiabilitiesMemberifrs-full:CommodityPriceRiskMembermt:EmissionRightsMember2022-12-310001243429mt:OtherHedgesMember2022-12-310001243429ifrs-full:CurrencyRiskMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:CurrencyRiskMembermt:ForeignExchangeContract1Memberifrs-full:CashFlowHedgesMember2022-01-012022-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMemberifrs-full:CommodityPriceRiskMember2021-12-310001243429mt:CommodityContract1Memberifrs-full:CashFlowHedgesMemberifrs-full:CommodityPriceRiskMember2022-01-012022-12-310001243429ifrs-full:CashFlowHedgesMemberifrs-full:CommodityPriceRiskMembermt:EmissionRightsMember2021-12-310001243429ifrs-full:CashFlowHedgesMemberifrs-full:CommodityPriceRiskMembermt:EmissionRightsMember2022-01-012022-12-310001243429ifrs-full:CashFlowHedgesMember2021-12-310001243429ifrs-full:CashFlowHedgesMember2022-01-012022-12-310001243429ifrs-full:HedgesOfNetInvestmentInForeignOperationsMembermt:CrossCurrencySwap375NotionalAmountMaturityJanuary2016Member2023-12-310001243429ifrs-full:HedgesOfNetInvestmentInForeignOperationsMembermt:CrossCurrencySwap375NotionalAmountMaturityJanuary2016Member2023-12-312023-12-310001243429mt:CrossCurrencySwap500NotionalAmountMaturityMarch2021Memberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2023-12-310001243429mt:CrossCurrencySwap500NotionalAmountMaturityMarch2021Memberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2023-12-312023-12-310001243429ifrs-full:HedgesOfNetInvestmentInForeignOperationsMembermt:CrossCurrencySwap500NotionalAmountMaturityJuly2019Member2023-12-310001243429ifrs-full:HedgesOfNetInvestmentInForeignOperationsMembermt:CrossCurrencySwap500NotionalAmountMaturityJuly2019Member2023-12-312023-12-310001243429ifrs-full:HedgesOfNetInvestmentInForeignOperationsMembermt:CrossCurrencySwap100NotionalAmountMaturityJune2018Member2023-12-310001243429ifrs-full:HedgesOfNetInvestmentInForeignOperationsMembermt:CrossCurrencySwap100NotionalAmountMaturityJune2018Member2023-12-312023-12-310001243429mt:CrossCurrencySwap200NotionalAmountMaturityNovember2019Memberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2023-12-310001243429mt:CrossCurrencySwap200NotionalAmountMaturityNovember2019Memberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2023-12-312023-12-310001243429ifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2023-12-312023-12-310001243429mt:CrossCurrencySwapMemberifrs-full:CurrencyRiskMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2023-12-310001243429mt:CrossCurrencySwapMemberifrs-full:CurrencyRiskMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMember2023-01-012023-12-310001243429ifrs-full:CurrencyRiskMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMembermt:EURDebtMember2023-12-310001243429ifrs-full:CurrencyRiskMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMembermt:EURDebtMember2023-01-012023-12-310001243429ifrs-full:CurrencyRiskMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMembermt:CrossCurrencySwap2018TotalMember2022-12-310001243429ifrs-full:CurrencyRiskMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMembermt:CrossCurrencySwap2018TotalMember2022-01-012022-12-310001243429ifrs-full:CurrencyRiskMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMembermt:EURDebtMember2022-12-310001243429ifrs-full:CurrencyRiskMemberifrs-full:HedgesOfNetInvestmentInForeignOperationsMembermt:EURDebtMember2022-01-012022-12-310001243429mt:BaseMetalsMemberifrs-full:Level2OfFairValueHierarchyMember2023-12-310001243429mt:BaseMetalsMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:FreightMember2023-12-310001243429ifrs-full:Level2OfFairValueHierarchyMembermt:FreightMember2022-12-310001243429mt:EnergyOilGasElectricityMemberifrs-full:Level2OfFairValueHierarchyMember2023-12-310001243429mt:EnergyOilGasElectricityMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429mt:EmissionRightsMemberifrs-full:Level2OfFairValueHierarchyMember2023-12-310001243429mt:EmissionRightsMemberifrs-full:Level2OfFairValueHierarchyMember2022-12-310001243429mt:EmissionRightsMember2023-12-310001243429mt:EmissionRightsMember2022-12-310001243429ifrs-full:CurrencyRiskMember2023-01-012023-12-310001243429ifrs-full:CurrencyRiskMember2022-01-012022-12-310001243429ifrs-full:FloatingInterestRateMemberifrs-full:InterestRateRiskMember2023-01-012023-12-310001243429ifrs-full:FloatingInterestRateMemberifrs-full:InterestRateRiskMember2022-01-012022-12-310001243429ifrs-full:InterestRateRiskMember2023-01-012023-12-310001243429ifrs-full:CommodityPriceRiskMember2023-01-012023-12-310001243429ifrs-full:CommodityPriceRiskMembermt:BaseMetalsMember2023-01-012023-12-310001243429mt:IronOreMemberifrs-full:CommodityPriceRiskMember2023-01-012023-12-310001243429mt:FreightMemberifrs-full:CommodityPriceRiskMember2023-01-012023-12-310001243429mt:EmissionRightsMemberifrs-full:CommodityPriceRiskMember2023-01-012023-12-310001243429mt:EnergyMemberifrs-full:CommodityPriceRiskMember2023-01-012023-12-310001243429ifrs-full:CommodityPriceRiskMember2022-01-012022-12-310001243429ifrs-full:CommodityPriceRiskMembermt:BaseMetalsMember2022-01-012022-12-310001243429mt:IronOreMemberifrs-full:CommodityPriceRiskMember2022-01-012022-12-310001243429mt:FreightMemberifrs-full:CommodityPriceRiskMember2022-01-012022-12-310001243429mt:EmissionRightsMemberifrs-full:CommodityPriceRiskMember2022-01-012022-12-310001243429mt:EnergyMemberifrs-full:CommodityPriceRiskMember2022-01-012022-12-310001243429ifrs-full:LandAndBuildingsMember2023-12-310001243429ifrs-full:LandAndBuildingsMember2022-12-310001243429mt:MachineryEquipmentAndOtherMember2023-12-310001243429mt:MachineryEquipmentAndOtherMember2022-12-310001243429ifrs-full:LandAndBuildingsMember2023-01-012023-12-310001243429ifrs-full:LandAndBuildingsMember2022-01-012022-12-310001243429mt:MachineryEquipmentAndOtherMember2023-01-012023-12-310001243429mt:MachineryEquipmentAndOtherMember2022-01-012022-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember2023-12-310001243429ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember2023-12-310001243429ifrs-full:NotLaterThanOneYearMember2022-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember2022-12-310001243429ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember2022-12-310001243429ifrs-full:LaterThanFiveYearsMember2022-12-310001243429ifrs-full:NotLaterThanOneYearMember2023-01-012023-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember2023-01-012023-12-310001243429ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember2023-01-012023-12-310001243429ifrs-full:LaterThanFiveYearsMember2023-01-012023-12-310001243429ifrs-full:NotLaterThanOneYearMember2022-01-012022-12-310001243429ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember2022-01-012022-12-310001243429ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember2022-01-012022-12-310001243429ifrs-full:LaterThanFiveYearsMember2022-01-012022-12-31mt:employee0001243429ifrs-full:PensionDefinedBenefitPlansMember2023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMember2022-12-310001243429mt:OtherPostEmploymentBenefitPlanMember2023-12-310001243429mt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429mt:TerminationBenefitsMember2023-12-310001243429mt:TerminationBenefitsMember2022-12-310001243429mt:PensionPlanOtherPostemploymentAndTerminationBenefitPlansMember2023-12-310001243429mt:PensionPlanOtherPostemploymentAndTerminationBenefitPlansMember2022-12-310001243429mt:SocialPlanProvisionMember2023-12-310001243429mt:SocialPlanProvisionMember2022-12-310001243429mt:ArcelorMittalDofascoG.P.Membermt:FullyFundedPensionPlansMembercountry:CA2023-12-310001243429mt:FullyFundedPensionPlansMembercountry:CAmt:ArcelorMittalMiningCanadaGPAndArcelorMittalInfrastructureCanadaGPAMMCMember2023-12-310001243429mt:CollectiveLaborAgreementMembercountry:CA2014-07-012014-09-300001243429mt:CollectiveLaborAgreementMembercountry:CA2016-02-012016-02-280001243429mt:ArcelorMittalLongProductsCanadaG.P.Membermt:FullyFundedPensionPlansMembercountry:CA2022-12-310001243429country:BE2015-12-012015-12-310001243429country:BE2016-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMembercountry:CA2022-12-310001243429country:BRifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:Europe1Member2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherRegionsMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2023-01-012023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMembercountry:CA2023-01-012023-12-310001243429country:BRifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2023-01-012023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:Europe1Member2023-01-012023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherRegionsMember2023-01-012023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMembercountry:CA2023-12-310001243429country:BRifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:Europe1Member2023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherRegionsMember2023-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMember2022-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembercountry:CA2022-12-310001243429ifrs-full:PlanAssetsMembercountry:BRifrs-full:PensionDefinedBenefitPlansMember2022-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2022-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2022-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMember2023-01-012023-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembercountry:CA2023-01-012023-12-310001243429ifrs-full:PlanAssetsMembercountry:BRifrs-full:PensionDefinedBenefitPlansMember2023-01-012023-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2023-01-012023-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2023-01-012023-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMember2023-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembercountry:CA2023-12-310001243429ifrs-full:PlanAssetsMembercountry:BRifrs-full:PensionDefinedBenefitPlansMember2023-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2023-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:CA2023-12-310001243429country:BRifrs-full:PensionDefinedBenefitPlansMember2023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:CA2022-12-310001243429country:BRifrs-full:PensionDefinedBenefitPlansMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMember2023-01-012023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:CA2023-01-012023-12-310001243429country:BRifrs-full:PensionDefinedBenefitPlansMember2023-01-012023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2023-01-012023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2023-01-012023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMembercountry:CA2021-12-310001243429country:BRifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:Europe1Member2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherRegionsMember2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMembercountry:CA2022-01-012022-12-310001243429country:BRifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMember2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:Europe1Member2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherRegionsMember2022-01-012022-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMember2021-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembercountry:CA2021-12-310001243429ifrs-full:PlanAssetsMembercountry:BRifrs-full:PensionDefinedBenefitPlansMember2021-12-310001243429ifrs-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:PlanAssetsMembercountry:BRifrs-full:PensionDefinedBenefitPlansMember2022-01-012022-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2022-01-012022-12-310001243429ifrs-full:PlanAssetsMemberifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMember2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:CA2021-12-310001243429country:BRifrs-full:PensionDefinedBenefitPlansMember2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMember2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:CA2022-01-012022-12-310001243429country:BRifrs-full:PensionDefinedBenefitPlansMember2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2022-01-012022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMember2021-01-012021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembercountry:CA2021-01-012021-12-310001243429country:BRifrs-full:PensionDefinedBenefitPlansMember2021-01-012021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:Europe1Member2021-01-012021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMembermt:OtherRegionsMember2021-01-012021-12-310001243429country:PLmt:OtherPostEmploymentBenefitPlanMember2021-04-012021-04-300001243429country:PLmt:OtherPostEmploymentBenefitPlanMember2021-06-012021-06-300001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembercountry:CAmt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2023-01-012023-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembercountry:CAmt:OtherPostEmploymentBenefitPlanMember2023-01-012023-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2023-01-012023-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2023-01-012023-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2023-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembercountry:CAmt:OtherPostEmploymentBenefitPlanMember2023-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2023-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2023-12-310001243429ifrs-full:PlanAssetsMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:PlanAssetsMembercountry:CAmt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:PlanAssetsMembermt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:PlanAssetsMembermt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:PlanAssetsMembermt:OtherPostEmploymentBenefitPlanMember2023-01-012023-12-310001243429ifrs-full:PlanAssetsMembercountry:CAmt:OtherPostEmploymentBenefitPlanMember2023-01-012023-12-310001243429ifrs-full:PlanAssetsMembermt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2023-01-012023-12-310001243429ifrs-full:PlanAssetsMembermt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2023-01-012023-12-310001243429ifrs-full:PlanAssetsMembermt:OtherPostEmploymentBenefitPlanMember2023-12-310001243429ifrs-full:PlanAssetsMembercountry:CAmt:OtherPostEmploymentBenefitPlanMember2023-12-310001243429ifrs-full:PlanAssetsMembermt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2023-12-310001243429ifrs-full:PlanAssetsMembermt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2023-12-310001243429country:CAmt:OtherPostEmploymentBenefitPlanMember2023-12-310001243429mt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2023-12-310001243429mt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2023-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembercountry:CAmt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherPostEmploymentBenefitPlanMember2022-01-012022-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembercountry:CAmt:OtherPostEmploymentBenefitPlanMember2022-01-012022-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2022-01-012022-12-310001243429ifrs-full:PresentValueOfDefinedBenefitObligationMembermt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2022-01-012022-12-310001243429ifrs-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:OtherPostEmploymentBenefitPlanMember2022-01-012022-12-310001243429country:CAmt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429mt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429mt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429mt:OtherPostEmploymentBenefitPlanMember2023-01-012023-12-310001243429country:CAmt:OtherPostEmploymentBenefitPlanMember2023-01-012023-12-310001243429mt:Europe1Membermt:OtherPostEmploymentBenefitPlanMember2023-01-012023-12-310001243429mt:OtherRegionsMembermt:OtherPostEmploymentBenefitPlanMember2023-01-012023-12-310001243429mt: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:OtherPostEmploymentBenefitPlanMember2021-01-012021-12-310001243429ifrs-full:CostOfSalesMember2023-01-012023-12-310001243429ifrs-full:CostOfSalesMember2022-01-012022-12-310001243429ifrs-full:CostOfSalesMember2021-01-012021-12-310001243429ifrs-full:SellingGeneralAndAdministrativeExpenseMember2023-01-012023-12-310001243429ifrs-full:SellingGeneralAndAdministrativeExpenseMember2022-01-012022-12-310001243429ifrs-full:SellingGeneralAndAdministrativeExpenseMember2021-01-012021-12-310001243429mt:FinancingCostsMember2023-01-012023-12-310001243429mt:FinancingCostsMember2022-01-012022-12-310001243429mt:FinancingCostsMember2021-01-012021-12-310001243429mt:Europe1Member2023-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembercountry:CA2023-12-310001243429country:BRifrs-full:Level1OfFairValueHierarchyMember2023-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:Europe1Member2023-12-310001243429ifrs-full:Level2And3OfFairValueHierarchyMembercountry:CA2023-12-310001243429country:BRifrs-full:Level2And3OfFairValueHierarchyMember2023-12-310001243429mt:Europe1Memberifrs-full:Level2And3OfFairValueHierarchyMember2023-12-310001243429mt:Europe1Member2022-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembercountry:CA2022-12-310001243429country:BRifrs-full:Level1OfFairValueHierarchyMember2022-12-310001243429ifrs-full:Level1OfFairValueHierarchyMembermt:Europe1Member2022-12-310001243429ifrs-full:Level2And3OfFairValueHierarchyMembercountry:CA2022-12-310001243429country:BRifrs-full:Level2And3OfFairValueHierarchyMember2022-12-310001243429mt:Europe1Memberifrs-full:Level2And3OfFairValueHierarchyMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:BottomOfRangeMember2023-12-310001243429ifrs-full:TopOfRangeMemberifrs-full:PensionDefinedBenefitPlansMember2023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:BottomOfRangeMember2022-12-310001243429ifrs-full:TopOfRangeMemberifrs-full:PensionDefinedBenefitPlansMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:BottomOfRangeMember2021-12-310001243429ifrs-full:TopOfRangeMemberifrs-full:PensionDefinedBenefitPlansMember2021-12-310001243429ifrs-full:BottomOfRangeMembermt:OtherPostEmploymentBenefitPlanMember2023-12-310001243429ifrs-full:TopOfRangeMembermt:OtherPostEmploymentBenefitPlanMember2023-12-310001243429ifrs-full:BottomOfRangeMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:TopOfRangeMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:BottomOfRangeMembermt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429ifrs-full:TopOfRangeMembermt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:WeightedAverageMember2023-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:WeightedAverageMember2022-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:WeightedAverageMember2021-12-310001243429ifrs-full:WeightedAverageMembermt:OtherPostEmploymentBenefitPlanMember2023-12-310001243429ifrs-full:WeightedAverageMembermt:OtherPostEmploymentBenefitPlanMember2022-12-310001243429ifrs-full:WeightedAverageMembermt:OtherPostEmploymentBenefitPlanMember2021-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:ActuarialAssumptionOfDiscountRatesMember2023-12-310001243429srt:ScenarioForecastMemberifrs-full:PensionDefinedBenefitPlansMemberifrs-full:ActuarialAssumptionOfDiscountRatesMember2024-01-012024-12-310001243429ifrs-full:PensionDefinedBenefitPlansMemberifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember2023-12-310001243429srt:ScenarioForecastMemberifrs-full:PensionDefinedBenefitPlansMemberifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember2024-01-012024-12-310001243429ifrs-full:ActuarialAssumptionOfMortalityRatesMemberifrs-full:PensionDefinedBenefitPlansMember2023-01-012023-12-310001243429ifrs-full:ActuarialAssumptionOfMortalityRatesMembersrt:ScenarioForecastMemberifrs-full:PensionDefinedBenefitPlansMember2024-01-012024-12-310001243429ifrs-full:ActuarialAssumptionOfMortalityRatesMemberifrs-full:PensionDefinedBenefitPlansMember2023-12-310001243429ifrs-full:ActuarialAssumptionOfDiscountRatesMembermt:OtherPostEmploymentBenefitPlanMember2023-12-310001243429srt:ScenarioForecastMemberifrs-full:ActuarialAssumptionOfDiscountRatesMembermt:OtherPostEmploymentBenefitPlanMember2024-01-012024-12-310001243429ifrs-full:ActuarialAssumptionOfMedicalCostTrendRatesMembermt:OtherPostEmploymentBenefitPlanMember2023-12-310001243429srt:ScenarioForecastMemberifrs-full:ActuarialAssumptionOfMedicalCostTrendRatesMembermt:OtherPostEmploymentBenefitPlanMember2024-01-012024-12-310001243429ifrs-full:ActuarialAssumptionOfMortalityRatesMembermt:OtherPostEmploymentBenefitPlanMember2023-01-012023-12-310001243429ifrs-full:ActuarialAssumptionOfMortalityRatesMembersrt:ScenarioForecastMembermt:OtherPostEmploymentBenefitPlanMember2024-01-012024-12-310001243429ifrs-full:ActuarialAssumptionOfMortalityRatesMembermt:OtherPostEmploymentBenefitPlanMember2023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ArcelorMittalEquityIncentivePlanMember2023-01-012023-12-3100012434292021-01-012023-12-31mt:indicator0001243429mt:EnvironmentalSocialAndGovernanceESGMembermt:ExecutiveOfficePlanMember2023-01-012023-12-310001243429mt:EnvironmentalSocialAndGovernanceESGMembermt:ExecutiveOfficersPlanMember2023-01-012023-12-310001243429mt:ExecutiveOfficePlanMembermt:HealthAndSafetyHSMember2023-01-012023-12-310001243429mt:ExecutiveOfficersPlanMembermt:HealthAndSafetyHSMember2023-01-012023-12-310001243429mt:DiversityAndInclusionDIOldMembermt:ExecutiveOfficePlanMember2023-01-012023-12-310001243429mt:DiversityAndInclusionDIOldMembermt:ExecutiveOfficersPlanMember2023-01-012023-12-310001243429srt:ScenarioForecastMember2030-01-012030-12-310001243429mt:ClimateActionMembermt:ExecutiveOfficePlanMember2023-01-012023-12-310001243429mt:ClimateActionMembermt:ExecutiveOfficersPlanMember2023-01-012023-12-310001243429mt:RestrictedShareUnitsRSUMembermt:ArcelorMittalEquityIncentivePlanMember2023-01-012023-12-310001243429ifrs-full:TopOfRangeMembermt:ExecutiveOfficePlanMembermt:RestrictedShareUnitsRSUAndPerformanceShareUnitsPSUMember2020-06-130001243429ifrs-full:TopOfRangeMembermt:ExecutiveOfficePlanMembermt:RestrictedShareUnitsRSUAndPerformanceShareUnitsPSUMember2021-06-080001243429ifrs-full:TopOfRangeMembermt:ExecutiveOfficePlanMembermt:RestrictedShareUnitsRSUAndPerformanceShareUnitsPSUMember2022-05-040001243429ifrs-full:TopOfRangeMembermt:ExecutiveOfficePlanMembermt:RestrictedShareUnitsRSUAndPerformanceShareUnitsPSUMember2023-05-020001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMember2023-01-012023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2023-01-012023-12-310001243429mt:ChiefExecutiveOfficer1Membermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMember2023-01-012023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:ExecutiveCharimanMember2023-01-012023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnTSRComparedToPeerGroupMembermt:ExecutiveOfficePlanMember2023-01-012023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnEPSComparedToPeerGroupMembermt:ExecutiveOfficePlanMember2023-01-012023-12-310001243429mt:VestingBasedonTSRComparedToPeerGroupTargetLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMember2023-01-012023-12-310001243429mt:VestingBasedOnTSRComparedToPeerGroupStretchLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMember2023-01-012023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnTSRComparedToPeerGroupMembermt:ExecutiveOfficersPlanMember2023-01-012023-12-310001243429mt:VestingBasedonTSRComparedToPeerGroupTargetLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2023-01-012023-12-310001243429mt:VestingBasedOnTSRComparedToPeerGroupStretchLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2023-01-012023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPerformanceIndexThresholdLevelMembermt:ExecutiveOfficePlanMember2023-01-012023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedonTSRComparedToPerformanceIndexTargetLevelMember2023-01-012023-12-310001243429mt:VestingBasedOnPerformanceOfROCEMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2023-01-012023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMembermt:VestingBasedOnPerformanceOfROCETargetLevelMember2023-01-012023-12-310001243429mt:EnvironmentalSocialAndGovernanceESGMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedOnESGMember2023-01-012023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:HealthAndSafetyHSMembermt:VestingBasedOnESGMember2023-01-012023-12-310001243429mt:ClimateActionMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedOnESGMember2023-01-012023-12-310001243429mt:DiversityAndInclusionDIMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedOnESGMember2023-01-012023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedOnESGMember2023-01-012023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGTargetLevelMembermt:ExecutiveOfficePlanMember2023-01-012023-12-310001243429mt:VestingBasedonGapToCompetitionTargetLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2023-01-012023-12-310001243429mt:VestingBasedOnGapToCompetitionStretchLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2023-01-012023-12-310001243429mt:EnvironmentalSocialAndGovernanceESGMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMembermt:VestingBasedOnESGMember2023-01-012023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMembermt:HealthAndSafetyHSMembermt:VestingBasedOnESGMember2023-01-012023-12-310001243429mt:ClimateActionMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMembermt:VestingBasedOnESGMember2023-01-012023-12-310001243429mt:DiversityAndInclusionDIMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMembermt:VestingBasedOnESGMember2023-01-012023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGTargetLevelMembermt:ExecutiveOfficersPlanMember2023-01-012023-12-310001243429mt:VestingBasedOnESGStretchLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2023-01-012023-12-310001243429mt:VestingBasedOnVestingPeriodPeriodOneMembermt:RestrictedShareUnitsRSUMembermt:ExecutiveOfficersPlanMember2023-01-012023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2020-01-012020-12-310001243429mt:ChiefExecutiveOfficer1Membermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:ExecutiveCharimanMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonEPSComparedToPeerGroupThresholdLevelMembermt:ExecutiveOfficePlanMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPeerGroupThresholdLevelMembermt:ExecutiveOfficePlanMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedonEPSComparedToPeerGroupTargetLevelMember2020-01-012020-12-310001243429mt:VestingBasedonTSRComparedToPeerGroupTargetLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPeerGroupThresholdLevelMembermt:ExecutiveOfficersPlanMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonEPSComparedToPeerGroupThresholdLevelMembermt:ExecutiveOfficersPlanMember2020-01-012020-12-310001243429mt:VestingBasedonTSRComparedToPeerGroupTargetLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMembermt:VestingBasedonEPSComparedToPeerGroupTargetLevelMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedonTSRComparedToPerformanceIndexTargetLevelMember2020-01-012020-12-310001243429mt:VestingBasedonGapToCompetitionTargetLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPerformanceIndexThresholdLevelMembermt:ExecutiveOfficePlanMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnGapToCompetitionThresholdLevelMembermt:ExecutiveOfficersPlanMember2020-01-012020-12-310001243429mt:VestingBasedOnVestingPeriodPeriodOneMembermt:RestrictedShareUnitsRSUMembermt:ExecutiveOfficersPlanMember2020-01-012020-12-310001243429mt:RestrictedShareUnitsRSUMembermt:VestingBasedOnVestingPeriodPeriodTwoMembermt:ExecutiveOfficersPlanMember2020-01-012020-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:ExecutiveCharimanMember2021-01-012021-12-310001243429mt:ChiefExecutiveOfficer1Membermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnTSRComparedToPeerGroupMembermt:ExecutiveOfficePlanMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnEPSComparedToPeerGroupMembermt:ExecutiveOfficePlanMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonEPSComparedToPeerGroupThresholdLevelMembermt:ExecutiveOfficePlanMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPeerGroupThresholdLevelMembermt:ExecutiveOfficePlanMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedonEPSComparedToPeerGroupTargetLevelMember2021-01-012021-12-310001243429mt:VestingBasedonTSRComparedToPeerGroupTargetLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnTSRComparedToPeerGroupMembermt:ExecutiveOfficersPlanMember2021-01-012021-12-310001243429mt:VestingBasedonTSRComparedToPeerGroupTargetLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2021-01-012021-12-310001243429mt:VestingBasedOnTSRComparedToPeerGroupStretchLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMembermt:VestingBasedOnGapToCompetitionMember2021-01-012021-12-310001243429mt:VestingBasedonGapToCompetitionTargetLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2021-01-012021-12-310001243429mt:VestingBasedOnGapToCompetitionStretchLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedOnESGMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGTargetLevelMembermt:ExecutiveOfficePlanMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMembermt:VestingBasedOnESGMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGTargetLevelMembermt:ExecutiveOfficersPlanMember2021-01-012021-12-310001243429mt:VestingBasedOnESGStretchLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2021-01-012021-12-310001243429mt:VestingBasedOnVestingPeriodPeriodOneMembermt:RestrictedShareUnitsRSUMembermt:ExecutiveOfficersPlanMember2021-01-012021-12-310001243429mt:RestrictedShareUnitsRSUMembermt:VestingBasedOnVestingPeriodPeriodTwoMembermt:ExecutiveOfficersPlanMember2021-01-012021-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:ExecutiveCharimanMember2022-01-012022-12-310001243429mt:ChiefExecutiveOfficer1Membermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnTSRComparedToPeerGroupMembermt:ExecutiveOfficePlanMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnEPSComparedToPeerGroupMembermt:ExecutiveOfficePlanMember2022-01-012022-12-310001243429mt:VestingBasedonTSRComparedToPeerGroupTargetLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMember2022-01-012022-12-310001243429mt:VestingBasedOnTSRComparedToPeerGroupStretchLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnTSRComparedToPeerGroupMembermt:ExecutiveOfficersPlanMember2022-01-012022-12-310001243429mt:VestingBasedonTSRComparedToPeerGroupTargetLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2022-01-012022-12-310001243429mt:VestingBasedOnTSRComparedToPeerGroupStretchLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedonTSRComparedToPerformanceIndexThresholdLevelMembermt:ExecutiveOfficePlanMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedonTSRComparedToPerformanceIndexTargetLevelMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMembermt:VestingBasedOnGapToCompetitionMember2022-01-012022-12-310001243429mt:VestingBasedonGapToCompetitionTargetLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2022-01-012022-12-310001243429mt:VestingBasedOnGapToCompetitionStretchLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2022-01-012022-12-310001243429mt:EnvironmentalSocialAndGovernanceESGMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedOnESGMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:HealthAndSafetyHSMembermt:VestingBasedOnESGMember2022-01-012022-12-310001243429mt:ClimateActionMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedOnESGMember2022-01-012022-12-310001243429mt:DiversityAndInclusionDIMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedOnESGMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficePlanMembermt:VestingBasedOnESGMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGTargetLevelMembermt:ExecutiveOfficePlanMember2022-01-012022-12-310001243429mt:EnvironmentalSocialAndGovernanceESGMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMembermt:VestingBasedOnESGMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMembermt:HealthAndSafetyHSMembermt:VestingBasedOnESGMember2022-01-012022-12-310001243429mt:ClimateActionMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMembermt:VestingBasedOnESGMember2022-01-012022-12-310001243429mt:DiversityAndInclusionDIMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMembermt:VestingBasedOnESGMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUMembermt:VestingBasedOnESGTargetLevelMembermt:ExecutiveOfficersPlanMember2022-01-012022-12-310001243429mt:VestingBasedOnESGStretchLevelMembermt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMember2022-01-012022-12-310001243429mt:VestingBasedOnVestingPeriodPeriodOneMembermt:RestrictedShareUnitsRSUMembermt:ExecutiveOfficersPlanMember2022-01-012022-12-310001243429mt:RestrictedShareUnitsRSUMembermt:GrantDateDecember82023MaturityDueDecember2026Member2023-12-082023-12-08mt:beneficiary0001243429mt:RestrictedShareUnitsRSUMembermt:GrantDateDecember82023MaturityDueDecember2026Member2023-12-310001243429mt:RestrictedShareUnitsRSUMembermt:GrantDateDecember82023MaturityDueDecember2026Member2023-12-312023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:GrantDateDecember82023MaturityDueJanuary2027Member2023-12-082023-12-080001243429mt:PerformanceShareUnitsPSUMembermt:GrantDateDecember82023MaturityDueJanuary2027Member2023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:GrantDateDecember82023MaturityDueJanuary2027Member2023-12-312023-12-310001243429mt:GrantDateDecember82023MaturityDueJanuary2027Membermt:ExecutiveOfficePlanMember2023-12-082023-12-080001243429mt:GrantDateDecember82023MaturityDueJanuary2027Membermt:ExecutiveOfficePlanMember2023-12-310001243429mt:GrantDateDecember82023MaturityDueJanuary2027Membermt:ExecutiveOfficePlanMember2023-12-312023-12-310001243429mt:RestrictedShareUnitsRSUMembermt:GrantDateDecember132022MaturityDueDecember2025Member2022-12-132022-12-130001243429mt:RestrictedShareUnitsRSUMembermt:GrantDateDecember132022MaturityDueDecember2025Member2023-12-310001243429mt:RestrictedShareUnitsRSUMembermt:GrantDateDecember132022MaturityDueDecember2025Member2023-12-312023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:GrantDateDecember132022MaturityDueJanuary2026Member2022-12-132022-12-130001243429mt:PerformanceShareUnitsPSUMembermt:GrantDateDecember132022MaturityDueJanuary2026Member2023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:GrantDateDecember132022MaturityDueJanuary2026Member2023-12-312023-12-310001243429mt:ExecutiveOfficePlanMembermt:GrantDateDecember132022MaturityDueJanuary2026Member2022-12-132022-12-130001243429mt:ExecutiveOfficePlanMembermt:GrantDateDecember132022MaturityDueJanuary2026Member2023-12-310001243429mt:ExecutiveOfficePlanMembermt:GrantDateDecember132022MaturityDueJanuary2026Member2023-12-312023-12-310001243429mt:RestrictedShareUnitsRSUMembermt:GrantDateDecember162021MaturityDueDecember2024Member2021-12-162021-12-160001243429mt:RestrictedShareUnitsRSUMembermt:GrantDateDecember162021MaturityDueDecember2024Member2023-12-310001243429mt:RestrictedShareUnitsRSUMembermt:GrantDateDecember162021MaturityDueDecember2024Member2023-12-312023-12-310001243429mt:GrantDateDecember162021MaturityDueJanuary2025Membermt:PerformanceShareUnitsPSUMember2021-12-162021-12-160001243429mt:GrantDateDecember162021MaturityDueJanuary2025Membermt:PerformanceShareUnitsPSUMember2023-12-310001243429mt:GrantDateDecember162021MaturityDueJanuary2025Membermt:PerformanceShareUnitsPSUMember2023-12-312023-12-310001243429mt:GrantDateDecember162021MaturityDueJanuary2025Membermt:ExecutiveOfficePlanMember2021-12-162021-12-160001243429mt:GrantDateDecember162021MaturityDueJanuary2025Membermt:ExecutiveOfficePlanMember2023-12-310001243429mt:GrantDateDecember162021MaturityDueJanuary2025Membermt:ExecutiveOfficePlanMember2023-12-312023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:GrantDateDecember142020MaturityDueJanuary12024Member2020-12-142020-12-140001243429mt:PerformanceShareUnitsPSUMembermt:GrantDateDecember142020MaturityDueJanuary12024Member2023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:GrantDateDecember142020MaturityDueJanuary12024Member2023-12-312023-12-310001243429mt:ExecutiveOfficePlanMembermt:GrantDateDecember142020MaturityDueJanuary12024Member2020-12-142020-12-140001243429mt:ExecutiveOfficePlanMembermt:GrantDateDecember142020MaturityDueJanuary12024Member2023-12-310001243429mt:ExecutiveOfficePlanMembermt:GrantDateDecember142020MaturityDueJanuary12024Member2023-12-312023-12-3100012434292016-07-012023-12-310001243429ifrs-full:BottomOfRangeMember2016-07-012023-12-310001243429ifrs-full:TopOfRangeMember2016-07-012023-12-310001243429mt:PerformanceShareUnitsPSUAndRestrictedShareUnitsRSUMember2023-01-012023-12-310001243429mt:PerformanceShareUnitsPSUAndRestrictedShareUnitsRSUMember2022-01-012022-12-310001243429mt:PerformanceShareUnitsPSUAndRestrictedShareUnitsRSUMember2021-01-012021-12-310001243429mt: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:PerformanceShareUnitsPSUAndExecutiveOfficeMember2022-12-310001243429mt:RestrictedShareUnitsRSUMember2023-01-012023-12-310001243429mt:PerformanceShareUnitsPSUAndExecutiveOfficeMember2023-01-012023-12-310001243429mt:RestrictedShareUnitsRSUMember2023-12-310001243429mt:PerformanceShareUnitsPSUAndExecutiveOfficeMember2023-12-310001243429mt:PerformanceShareUnitsPSUMembermt:ExecutiveOfficersPlanMembermt:VestingBasedOnPerformanceOfROCEStretchLevelMember2023-01-012023-12-310001243429ifrs-full:OtherEnvironmentRelatedProvisionMember2022-12-310001243429ifrs-full:OtherEnvironmentRelatedProvisionMember2023-01-012023-12-310001243429ifrs-full:OtherEnvironmentRelatedProvisionMember2023-12-310001243429mt:EmissionRightsMember2022-12-310001243429mt:EmissionRightsMember2023-01-012023-12-310001243429mt:EmissionRightsMember2023-12-310001243429mt:AssetRetirementObligationsMember2022-12-310001243429mt:AssetRetirementObligationsMember2023-01-012023-12-310001243429mt:AssetRetirementObligationsMember2023-12-310001243429ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember2022-12-310001243429ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember2023-01-012023-12-310001243429ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember2023-12-310001243429mt:StaffRelatedObligationsMember2022-12-310001243429mt:StaffRelatedObligationsMember2023-01-012023-12-310001243429mt:StaffRelatedObligationsMember2023-12-310001243429mt:VoluntarySeparationPlansMember2022-12-310001243429mt:VoluntarySeparationPlansMember2023-01-012023-12-310001243429mt:VoluntarySeparationPlansMember2023-12-310001243429ifrs-full:LegalProceedingsProvisionMember2022-12-310001243429ifrs-full:LegalProceedingsProvisionMember2023-01-012023-12-310001243429ifrs-full:LegalProceedingsProvisionMember2023-12-310001243429ifrs-full:ProvisionForTaxesOtherThanIncomeTaxMember2022-12-310001243429ifrs-full:ProvisionForTaxesOtherThanIncomeTaxMember2023-01-012023-12-310001243429ifrs-full:ProvisionForTaxesOtherThanIncomeTaxMember2023-12-310001243429mt:OtherLegalClaimsMember2022-12-310001243429mt:OtherLegalClaimsMember2023-01-012023-12-310001243429mt:OtherLegalClaimsMember2023-12-310001243429ifrs-full:OnerousContractsProvisionMember2022-12-310001243429ifrs-full:OnerousContractsProvisionMember2023-01-012023-12-310001243429ifrs-full:OnerousContractsProvisionMember2023-12-310001243429ifrs-full:MiscellaneousOtherProvisionsMember2022-12-310001243429ifrs-full:MiscellaneousOtherProvisionsMember2023-01-012023-12-310001243429ifrs-full:MiscellaneousOtherProvisionsMember2023-12-310001243429ifrs-full:OtherEnvironmentRelatedProvisionMember2021-12-310001243429ifrs-full:OtherEnvironmentRelatedProvisionMember2022-01-012022-12-310001243429mt:EmissionRightsMember2021-12-310001243429mt:EmissionRightsMember2022-01-012022-12-310001243429mt:AssetRetirementObligationsMember2021-12-310001243429mt:AssetRetirementObligationsMember2022-01-012022-12-310001243429ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember2021-12-310001243429ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember2022-01-012022-12-310001243429mt:StaffRelatedObligationsMember2021-12-310001243429mt:StaffRelatedObligationsMember2022-01-012022-12-310001243429mt:VoluntarySeparationPlansMember2021-12-310001243429mt:VoluntarySeparationPlansMember2022-01-012022-12-310001243429ifrs-full:LegalProceedingsProvisionMember2021-12-310001243429ifrs-full:LegalProceedingsProvisionMember2022-01-012022-12-310001243429ifrs-full:ProvisionForTaxesOtherThanIncomeTaxMember2021-12-310001243429ifrs-full:ProvisionForTaxesOtherThanIncomeTaxMember2022-01-012022-12-310001243429mt:OtherLegalClaimsMember2021-12-310001243429mt:OtherLegalClaimsMember2022-01-012022-12-310001243429ifrs-full:OnerousContractsProvisionMember2021-12-310001243429ifrs-full:OnerousContractsProvisionMember2022-01-012022-12-310001243429ifrs-full:MiscellaneousOtherProvisionsMember2021-12-310001243429ifrs-full:MiscellaneousOtherProvisionsMember2022-01-012022-12-310001243429country:FRifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember2023-12-310001243429country:FRifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember2022-12-310001243429country:BRmt:IndemnificationProvisionMember2023-12-310001243429country:BRmt:IndemnificationProvisionMember2022-12-310001243429ifrs-full:OtherEnvironmentRelatedProvisionMembermt:Europe1Member2023-12-310001243429country:ZAifrs-full:OtherEnvironmentRelatedProvisionMember2023-12-310001243429ifrs-full:OtherEnvironmentRelatedProvisionMembercountry:CA2023-12-310001243429ifrs-full:OtherEnvironmentRelatedProvisionMembercountry:BE2023-12-310001243429ifrs-full:OtherEnvironmentRelatedProvisionMembercountry:LU2023-12-310001243429country:FRifrs-full:OtherEnvironmentRelatedProvisionMember2023-12-310001243429ifrs-full:OtherEnvironmentRelatedProvisionMembercountry:PL2023-12-310001243429country:DEifrs-full:OtherEnvironmentRelatedProvisionMember2023-12-310001243429country:ESifrs-full:OtherEnvironmentRelatedProvisionMember2023-12-310001243429mt:WaterproofingTreatmentMembercountry:LU2023-12-310001243429country:LUmt:CoveringProcessOfDifferdangeDumpMember2023-12-310001243429ifrs-full:OtherEnvironmentRelatedProvisionMembercountry:PL2023-01-012023-12-310001243429country:PLmt:ReclaimOfLandfillAndDisposalOfResiduesMember2023-01-012023-12-310001243429country:ZAmt:PretoriaWorksSiteMemberifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember2023-12-310001243429country:ZAmt:VanderbijlparkWorksSiteMemberifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember2023-12-310001243429mt:NewcastleWorksSiteMembercountry:ZAifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember2023-12-310001243429mt:ThabazimbiMineMembercountry:ZAifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember2023-12-310001243429mt:RemediatingToxicSedimentMembercountry:CA2023-12-310001243429mt:AssetRetirementObligationsMembercountry:CA2023-12-310001243429country:MXmt:AssetRetirementObligationsMember2023-12-310001243429mt:AssetRetirementObligationsMembercountry:UA2023-12-310001243429country:DEmt:AssetRetirementObligationsMember2023-12-310001243429country:BRmt:AssetRetirementObligationsMember2023-12-310001243429mt:AssetRetirementObligationsMembercountry:KZ2023-12-310001243429mt:AssetRetirementObligationsMembercountry:LR2023-12-310001243429country:ZAmt:AssetRetirementObligationsMember2023-12-310001243429mt:AssetRetirementObligationsMembermt:MiningActivitiesMember2023-12-310001243429mt:AssetRetirementObligationsMemberifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember2023-12-310001243429mt:ArcelorMittalTexasHBILLCMember2023-12-310001243429mt:ArcelorMittalTexasHBILLCMember2022-12-310001243429mt:SonasidMember2023-12-310001243429mt:SonasidMember2022-12-310001243429ifrs-full:FinancialGuaranteeContractsMember2023-12-310001243429ifrs-full:FinancialGuaranteeContractsMember2022-12-310001243429mt:ValueAddedTaxMembermt:SOLCoqueriaTubaroS.A.Member2011-01-012011-12-31mt:claim0001243429mt:ValueAddedTaxMembermt:SOLCoqueriaTubaroS.A.Member2022-09-012022-09-300001243429mt:ArcelorMittalBrasilS.A.Member2021-07-012021-07-31mt:lawsuit0001243429mt:CorporateIncomeTaxandIncorrectDeductionsofInterestandCertainPaymentsMembermt:ArcelorMittalBrasilS.A.Member2011-01-012011-12-310001243429mt:TaxAssessmentsRelatedToAmortizationOfGoodwillMembermt:ArcelorMittalBrasilS.A.Member2016-04-012016-04-300001243429mt:TaxAssessmentsRelatedToAmortizationOfGoodwillMembermt:ArcelorMittalBrasilS.A.Member2018-12-012018-12-310001243429mt:TaxAssessmentsRelatedToAmortizationOfGoodwillMembermt:ArcelorMittalBrasilS.A.Member2020-12-012020-12-310001243429mt:ArcelorMittalBrasilS.A.Membermt:CreditsforSocialSecurityTaxesMember2014-01-012018-12-310001243429mt:ValueAddedTaxMembermt:ArcelorMittalBrasilS.A.Member2023-01-012023-12-31mt:case0001243429mt:ArcelorMittalBrasilS.A.Member2022-01-012022-12-310001243429mt:ArcelorMittalComercializadoradeEnergiaMembermt:TaxCreditsonInterstateSalesofElectricityMember2014-05-012014-05-310001243429mt:ArcelorMittalComercializadoradeEnergiaMembermt:TaxCreditsonInterstateSalesofElectricityMember2016-04-012016-04-300001243429mt:RetroactiveApplicationofNewLawMembermt:ArcelorMittalComercializadoradeEnergiaMember2017-11-012017-11-300001243429mt:RetroactiveApplicationofNewLawMembermt:ArcelorMittalComercializadoradeEnergiaMember2019-02-012019-02-280001243429mt:ValueAddedTaxMembermt:ArcelorMittalBrasilS.A.Member2015-05-012015-07-310001243429mt:ArcelorMittalBrasilS.A.Member2015-05-012015-07-310001243429mt:ValueAddedTaxMembermt:ArcelorMittalBrasilS.A.Member2022-09-012022-09-300001243429mt:ValueAddedTaxMembermt:ArcelorMittalBrasilS.A.Member2023-11-012023-11-300001243429mt:ValueAddedTaxMembermt:ArcelorMittalBrasilS.A.Member2023-12-012023-12-310001243429mt:ValueAddedTaxMembermt:PendingMembermt:ArcelorMittalBrasilS.A.Member2023-12-012023-12-310001243429mt:ValueAddedTaxMembermt:ArcelorMittalBrasilS.A.Member2016-05-172016-05-170001243429ifrs-full:ProvisionForTaxesOtherThanIncomeTaxMembermt:ArcelorMittalBrasilS.A.Member2023-01-012023-01-310001243429mt:ArcelorMittalBrasilS.A.Membermt:TaxYear2018Member2023-01-012023-01-310001243429mt:ArcelorMittalBrasilS.A.Membermt:TaxYear2018Member2023-11-300001243429mt:ArcelorMittalBrasilS.A.Member2010-01-012010-12-31iso4217:BRL0001243429mt:ArcelorMittalBrasilS.A.Member2014-06-012014-06-300001243429mt:ArcelorMittalBrasilS.A.Member2014-12-012014-12-310001243429mt:ArcelorMittalBrasilS.A.Member2022-11-012022-11-300001243429mt:ArcelorMittalMexicoS.A.deC.V.Membermt:A2008TaxYearMember2023-01-012023-12-310001243429mt:ArcelorMittalMexicoS.A.deC.V.Membermt:A2013TaxYearMember2023-01-012023-12-310001243429mt:ArcelorMittalLasTruchasMembermt:A2014TaxYearMember2023-12-312023-12-310001243429mt:ArcelorMittalKryvyiRihMembermt:UkrainianTaxAuditMember2019-10-012019-10-310001243429mt:ArcelorMittalKryvyiRihMember2020-01-012020-01-31