http://fasb.org/us-gaap/2022#InterestAndDividendIncomeOperatinghttp://fasb.org/us-gaap/2022#OtherNoninterestExpensehttp://fasb.org/us-gaap/2022#OtherNoninterestExpensehttp://fasb.org/us-gaap/2022#OtherNoninterestExpensehttp://fasb.org/us-gaap/2022#OtherNoninterestExpensehttp://fasb.org/us-gaap/2022#OtherNoninterestExpensehttp://fasb.org/us-gaap/2022#OtherNoninterestExpensehttp://fasb.org/us-gaap/2022#OtherNoninterestExpensehttp://fasb.org/us-gaap/2022#OtherNoninterestExpenseJanuary 31, 2026http://fasb.org/us-gaap/2022#RevenueFromContractWithCustomerIncludingAssessedTaxP3Yhttp://fasb.org/us-gaap/2022#OtherNoninterestExpensehttp://fasb.org/us-gaap/2022#InterestAndDividendIncomeOperatingQ1http://fasb.org/us-gaap/2022#OtherNoninterestExpenseJanuary 31, 2034http://fasb.org/us-gaap/2022#OtherNoninterestExpensehttp://fasb.org/us-gaap/2022#OtherNoninterestExpensehttp://fasb.org/us-gaap/2022#RevenueFromContractWithCustomerIncludingAssessedTax0000036270http://fasb.org/us-gaap/2022#OtherNoninterestExpensehttp://fasb.org/us-gaap/2022#OtherNoninterestExpense2027-01-01http://fasb.org/us-gaap/2022#OtherNoninterestExpenseJanuary 31, 20282033-12-31false--12-31http://fasb.org/us-gaap/2022#OtherNoninterestExpense0000036270us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000036270us-gaap:FairValueInputsLevel3Member2023-03-310000036270mtb:FixedRateLongTermBorrowingsMemberus-gaap:FairValueHedgingMember2023-01-012023-03-310000036270us-gaap:CarryingReportedAmountFairValueDisclosureMember2022-12-310000036270us-gaap:DepositAccountMembermtb:CommercialBankingMemberus-gaap:AccountingStandardsUpdate201409Member2022-01-012022-03-310000036270mtb:NonPCDAcquiredLoansMember2022-04-010000036270us-gaap:NondesignatedMembermtb:CommitmentsToSellRealEstateLoansMemberus-gaap:FairValueHedgingMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMemberus-gaap:FinancialAssetNotPastDueMembermtb:ResidentialRealEstateExcludingAltAMember2022-12-310000036270us-gaap:RevolvingCreditFacilityMember2023-01-012023-03-310000036270us-gaap:FairValueInputsLevel3Membermtb:OtherAssetsAndOtherLiabilitiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:OtherLoansMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270mtb:DiscretionaryPortfolioMemberus-gaap:IntersegmentEliminationMember2023-01-012023-03-310000036270mtb:RecreationalFinanceMember2022-03-310000036270us-gaap:RevolvingCreditFacilityMemberus-gaap:PassMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyMemberus-gaap:AutomobileLoanMember2023-01-012023-03-310000036270mtb:LongTermDebtPriorPeriodMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:AutomobileLoanMember2022-12-310000036270us-gaap:OperatingSegmentsMembermtb:RetailBankingMember2023-01-012023-03-310000036270us-gaap:PaymentDeferralMember2023-01-012023-03-310000036270mtb:AccumulatedOtherMember2023-01-012023-03-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyOneMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:ResidentialBuilderAndDeveloperMembermtb:CriticizedAccrualMember2023-03-310000036270us-gaap:OperatingSegmentsMembermtb:BusinessBankingMembersrt:RevisionOfPriorPeriodReclassificationAdjustmentMember2022-01-012022-03-310000036270mtb:PeoplesUnitedFinancialIncMember2022-04-010000036270mtb:LongTermDebtTwoThousandTwentyOneMemberus-gaap:AutomobileLoanMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:RecreationalFinanceMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270mtb:SeriesASeriesCAndSeriesEPreferredStockMember2023-03-3100000362702023-01-012023-01-310000036270mtb:PcdAcquiredLoansMember2022-04-012022-04-010000036270us-gaap:OperatingSegmentsMembersrt:RevisionOfPriorPeriodReclassificationAdjustmentMember2022-01-012022-03-310000036270mtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270mtb:CoreDepositAndOtherIntangibleAssetsMembermtb:PeoplesUnitedFinancialIncMembersrt:MaximumMember2022-04-012022-04-010000036270us-gaap:PassMembermtb:LongTermDebtPriorPeriodMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:RecreationalFinanceMembermtb:LongTermDebtTwoThousandEighteenMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270us-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyMembermtb:OtherCommercialConstructionMember2023-03-310000036270us-gaap:CashFlowHedgingMember2023-01-012023-03-310000036270us-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueMeasurementsRecurringMember2023-03-310000036270mtb:BusinessBankingMemberus-gaap:FiduciaryAndTrustMemberus-gaap:AccountingStandardsUpdate201409Member2023-01-012023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandTwentyMembermtb:CriticizedAccrualMember2023-03-310000036270us-gaap:FairValueInputsLevel2Member2023-03-310000036270us-gaap:CommercialMortgageBackedSecuritiesMember2022-12-310000036270mtb:ResidentialBuilderAndDeveloperMember2022-12-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyTwoMember2022-12-310000036270us-gaap:FairValueInputsLevel3Membermtb:OtherAssetsAndOtherLiabilitiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-01-012022-03-310000036270us-gaap:AssetPledgedAsCollateralWithoutRightMemberus-gaap:FederalHomeLoanBankAdvancesMemberus-gaap:HomeEquityMember2022-12-310000036270us-gaap:FairValueInputsLevel2Memberus-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2023-03-310000036270us-gaap:AllOtherSegmentsMemberus-gaap:IntersegmentEliminationMember2023-01-012023-03-310000036270mtb:OtherLoansMembermtb:RevolvingLoansConvertedToTermLoansMember2023-03-310000036270mtb:RecreationalFinanceMembermtb:LongTermDebtTwoThousandTwentyTwoMemberus-gaap:FinancialAssetNotPastDueMember2023-03-3100000362702023-01-012023-03-310000036270mtb:CommercialRealEstateSegmentMemberus-gaap:AccountingStandardsUpdate201409Member2022-01-012022-03-310000036270us-gaap:AutomobileLoanMember2022-03-310000036270us-gaap:ConsumerPortfolioSegmentMember2021-12-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandTwentyOneMember2023-01-012023-03-310000036270mtb:OtherLoansMember2022-01-010000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:HomeEquityLinesAndLoansMember2022-12-310000036270mtb:PcdAcquiredLoansMember2022-04-010000036270us-gaap:FairValueInputsLevel1Member2022-12-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:HomeEquityLinesAndLoansMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMembermtb:ResidentialRealEstateExcludingAltAMember2022-12-310000036270us-gaap:EstimateOfFairValueFairValueDisclosureMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMember2023-03-310000036270us-gaap:FairValueInputsLevel2Memberus-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2023-03-310000036270mtb:CommercialFinancialLeasingMember2023-03-310000036270us-gaap:CarryingReportedAmountFairValueDisclosureMembermtb:CommercialLoansAndLeasesMember2022-12-310000036270mtb:FourPointSixFivePercentageFixedRateSeniorNotesDueToMatureInJanuary2026Member2023-01-310000036270us-gaap:PassMembermtb:LongTermDebtTwoThousandEighteenMembermtb:ResidentialBuilderAndDeveloperMember2022-12-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:ResidentialRealEstateExcludingAltAMember2023-03-310000036270us-gaap:OperatingSegmentsMemberus-gaap:AllOtherSegmentsMembersrt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandTwentyMemberus-gaap:FinancialAssetNotPastDueMembermtb:ResidentialRealEstateExcludingAltAMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:ResidentialRealEstateExcludingAltAMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:CommercialFinancialLeasingMemberus-gaap:PassMember2023-03-310000036270mtb:HomeEquityLinesAndLoansMembermtb:LongTermDebtTwoThousandTwentyTwoMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270us-gaap:NondesignatedMembermtb:ForeignExchangeAndOtherOptionAndFuturesContractsMemberus-gaap:FairValueHedgingMember2022-12-310000036270mtb:OtherCommercialConstructionMemberus-gaap:PaymentDeferralMember2023-01-012023-03-310000036270us-gaap:FairValueMeasurementsNonrecurringMember2023-03-310000036270mtb:RetailBankingMember2022-01-012022-03-310000036270us-gaap:DepositAccountMember2023-01-012023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedAccrualMembermtb:LongTermDebtPriorPeriodMember2023-03-310000036270mtb:CommonStockIssuableMember2022-03-310000036270us-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyTwoMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:CommercialFinancialLeasingMember2022-12-310000036270us-gaap:PensionPlansDefinedBenefitMember2023-01-012023-03-310000036270mtb:HomeEquityLinesAndLoansMembermtb:LongTermDebtPriorPeriodMember2023-01-012023-03-310000036270us-gaap:CommercialRealEstatePortfolioSegmentMember2022-12-310000036270mtb:OtherCommercialConstructionMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:RecreationalFinanceMember2023-01-012023-03-310000036270mtb:OtherLoansMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:FixedRateLongTermBorrowingsMemberus-gaap:FairValueHedgingMember2022-01-012022-12-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:ResidentialRealEstateExcludingAltAMember2022-12-310000036270mtb:CollectiveInvestmentTrustMemberus-gaap:FiduciaryAndTrustMember2022-01-012022-03-310000036270mtb:BayviewLendingGroupAndBayviewFinancialMember2022-12-310000036270us-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:PaymentDeferralMember2022-01-012022-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandTwentyTwoMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:HomeEquityLinesAndLoansMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:CommercialBankingMemberus-gaap:AccountingStandardsUpdate201409Member2022-01-012022-03-310000036270us-gaap:FairValueMeasurementsRecurringMember2022-12-310000036270us-gaap:PassMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:PaymentDeferralMember2022-01-012022-03-310000036270mtb:ResidentialBuilderAndDeveloperMembermtb:LongTermDebtTwoThousandTwentyTwoMember2022-12-310000036270us-gaap:OtherDebtSecuritiesMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270us-gaap:DepositAccountMemberus-gaap:AccountingStandardsUpdate201409Member2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:RecreationalFinanceMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:DiscountedCashFlowsMemberus-gaap:FairValueMeasurementsRecurringMembermtb:OtherAssetsAndOtherLiabilitiesMember2022-12-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:RecreationalFinanceMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:CriticizedAccrualMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedNonaccrualMembermtb:LongTermDebtPriorPeriodMember2022-12-310000036270mtb:ResidentialBuilderAndDeveloperMemberus-gaap:PaymentDeferralMember2023-01-012023-03-310000036270us-gaap:CommonStockMember2022-12-310000036270mtb:ResidentialBuilderAndDeveloperMembermtb:LongTermDebtPriorPeriodMember2023-03-310000036270us-gaap:NondesignatedMemberus-gaap:FairValueHedgingMember2023-03-310000036270us-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyThreeMembermtb:ResidentialBuilderAndDeveloperMember2023-03-310000036270us-gaap:PassMembermtb:ResidentialBuilderAndDeveloperMembermtb:LongTermDebtPriorPeriodMember2023-03-310000036270mtb:ResidentialMortgageBankingMember2022-01-012022-03-310000036270mtb:OtherCommercialConstructionMember2022-03-310000036270us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMember2023-01-012023-03-310000036270mtb:RecreationalFinanceMembermtb:LongTermDebtPriorPeriodMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270us-gaap:ConsumerPortfolioSegmentMember2022-12-310000036270mtb:LongTermDebtPriorPeriodMembermtb:OtherCommercialConstructionMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMember2023-03-310000036270us-gaap:RevolvingCreditFacilityMember2023-03-310000036270us-gaap:USTreasuryAndGovernmentMember2022-12-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:PassMemberus-gaap:RevolvingCreditFacilityMember2023-03-310000036270us-gaap:AvailableforsaleSecuritiesMember2023-03-310000036270mtb:CommonStockIssuableMember2023-03-310000036270us-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:HomeEquityLinesAndLoansMembermtb:LongTermDebtTwoThousandTwentyThreeMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:HomeEquityLinesAndLoansMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270mtb:LongTermDebtTwoThousandEighteenMembermtb:ResidentialRealEstateExcludingAltAMember2022-12-310000036270mtb:CommonStockIssuableMember2021-12-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMembermtb:OtherLoansMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtPriorPeriodMember2023-01-012023-03-310000036270mtb:RecreationalFinanceMember2023-03-310000036270us-gaap:DesignatedAsHedgingInstrumentMembermtb:CommitmentsToSellRealEstateLoansMemberus-gaap:FairValueHedgingMember2022-12-310000036270us-gaap:AdditionalPaidInCapitalMember2022-01-012022-03-310000036270us-gaap:RevolvingCreditFacilityMembermtb:HomeEquityLinesAndLoansMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270srt:WeightedAverageMembermtb:OtherAssetsAndOtherLiabilitiesMemberus-gaap:FairValueMeasurementsRecurringMember2023-01-012023-03-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyMember2022-12-310000036270mtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandTwentyMembermtb:OtherCommercialConstructionMember2022-12-310000036270us-gaap:MortgageBankingMember2023-01-012023-03-310000036270mtb:OtherLoansMemberus-gaap:FinancialAssetNotPastDueMembermtb:RevolvingLoansConvertedToTermLoansMember2022-12-310000036270us-gaap:PassMembermtb:LongTermDebtPriorPeriodMembermtb:OtherCommercialConstructionMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:AutomobileLoanMember2023-03-310000036270us-gaap:PassMembermtb:LongTermDebtPriorPeriodMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:CommercialRealEstateSegmentMember2023-03-310000036270us-gaap:TreasuryStockMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyThreeMembermtb:OtherCommercialConstructionMember2023-03-310000036270us-gaap:PassMemberus-gaap:RevolvingCreditFacilityMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:MaturityPeriodOneMemberus-gaap:InterestRateSwapMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMemberus-gaap:AutomobileLoanMember2023-03-310000036270us-gaap:USTreasuryAndGovernmentMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:RevolvingLoansConvertedToTermLoansMember2023-03-310000036270mtb:ResidentialBuilderAndDeveloperMember2023-01-012023-03-310000036270us-gaap:FairValueInputsLevel2Membermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:CriticizedNonaccrualMembermtb:ResidentialBuilderAndDeveloperMember2022-12-310000036270mtb:ResidentialBuilderAndDeveloperMembermtb:LongTermDebtPriorPeriodMember2022-12-310000036270mtb:CommercialLoansAndLeasesMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310000036270mtb:RecreationalFinanceMember2022-12-310000036270mtb:OtherLoansMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:ResidentialBuilderAndDeveloperMember2022-12-310000036270mtb:CollectiveInvestmentTrustMemberus-gaap:FiduciaryAndTrustMember2023-01-012023-03-310000036270us-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyMembermtb:ResidentialBuilderAndDeveloperMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyOneMemberus-gaap:FinancialAssetNotPastDueMembermtb:ResidentialRealEstateExcludingAltAMember2022-12-310000036270us-gaap:FairValueHedgingMember2022-01-012022-12-310000036270srt:MinimumMember2023-01-012023-03-310000036270mtb:LongTermDebtPriorPeriodMemberus-gaap:AutomobileLoanMember2023-01-012023-03-310000036270us-gaap:CommercialRealEstatePortfolioSegmentMember2022-01-012022-03-310000036270us-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyOneMembermtb:ResidentialBuilderAndDeveloperMember2023-03-310000036270mtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandTwentyMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:LongTermDebtTwoThousandEighteenMembermtb:HomeEquityLinesAndLoansMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:AutomobileLoanMember2022-12-310000036270mtb:CriticizedAccrualMembermtb:LongTermDebtTwoThousandTwentyTwoMembermtb:OtherCommercialConstructionMember2023-03-310000036270us-gaap:DesignatedAsHedgingInstrumentMembermtb:CommitmentsToSellRealEstateLoansMemberus-gaap:FairValueHedgingMember2023-03-310000036270us-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2023-03-310000036270us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-12-310000036270us-gaap:FinancialAssetNotPastDueMembermtb:ResidentialRealEstateExcludingAltAMember2022-12-310000036270us-gaap:RevolvingCreditFacilityMembermtb:ResidentialRealEstateExcludingAltAMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMembermtb:ResidentialRealEstateExcludingAltAMember2023-03-310000036270mtb:CommercialRealEstateSegmentMember2022-03-3100000362702022-01-012022-12-310000036270mtb:CommercialBankingMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandTwentyThreeMembermtb:OtherLoansMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:ResidentialBuilderAndDeveloperMembermtb:CriticizedAccrualMember2022-12-310000036270mtb:CombinationOfConcessionTypesMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2022-01-012022-03-310000036270us-gaap:PensionPlansDefinedBenefitMember2022-01-012022-03-310000036270mtb:CommonStockIssuableMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandTwentyThreeMembermtb:CriticizedAccrualMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270us-gaap:TreasuryStockMember2022-12-310000036270us-gaap:PaymentDeferralMember2022-01-012022-03-310000036270mtb:DiscretionaryPortfolioMemberus-gaap:AccountingStandardsUpdate201409Member2022-01-012022-03-310000036270us-gaap:OtherLiabilitiesMember2023-03-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:PassMembermtb:LongTermDebtTwoThousandEighteenMember2022-12-310000036270mtb:ResidentialBuilderAndDeveloperMembermtb:CriticizedAccrualMembermtb:LongTermDebtPriorPeriodMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CombinationOfModificationTypesMember2023-01-012023-03-310000036270mtb:BusinessBankingMemberus-gaap:OperatingSegmentsMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:AutomobileLoanMember2022-12-310000036270mtb:RetailBankingMemberus-gaap:AccountingStandardsUpdate201409Member2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMembermtb:OtherCommercialConstructionMember2023-03-310000036270us-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberus-gaap:FairValueHedgingMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMember2022-12-310000036270us-gaap:OperatingSegmentsMembersrt:ScenarioPreviouslyReportedMember2022-01-012022-03-310000036270mtb:ResidentialLimitedDocumentationMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandNineteenMembermtb:CriticizedNonaccrualMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:CommercialFinancialLeasingMembermtb:CriticizedNonaccrualMember2022-12-310000036270us-gaap:RevolvingCreditFacilityMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:HomeEquityLinesAndLoansMembermtb:LongTermDebtPriorPeriodMember2023-03-310000036270us-gaap:AdditionalPaidInCapitalMember2022-12-310000036270mtb:FixedRateLongTermBorrowingsMemberus-gaap:FairValueHedgingMember2023-03-310000036270us-gaap:OperatingSegmentsMembermtb:RetailBankingMembersrt:ScenarioPreviouslyReportedMember2022-01-012022-03-310000036270us-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000036270mtb:LongTermDebtPriorPeriodMemberus-gaap:FinancialAssetNotPastDueMembermtb:ResidentialRealEstateExcludingAltAMember2023-03-310000036270us-gaap:InterestRateContractMember2022-01-012022-03-310000036270us-gaap:MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember2023-03-310000036270us-gaap:PassMemberus-gaap:RevolvingCreditFacilityMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:RetailBankingMemberus-gaap:IntersegmentEliminationMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:HomeEquityLinesAndLoansMember2022-12-310000036270mtb:LongTermDebtTwoThousandEighteenMembermtb:OtherLoansMember2022-12-310000036270mtb:CommercialRealEstateSegmentMemberus-gaap:AccountingStandardsUpdate201409Member2023-01-012023-03-310000036270mtb:DiscountedCashFlowsMemberus-gaap:FairValueMeasurementsRecurringMembermtb:OtherAssetsAndOtherLiabilitiesMember2023-03-310000036270mtb:SeriesIPreferredStocksMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:CriticizedAccrualMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:FourPointSevenZeroPercentageFixedRateSeniorNotesDueToMatureInJanuary2028Member2023-01-012023-01-310000036270mtb:ResidentialRealEstateLoansMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-03-3100000362702022-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandTwentyTwoMembermtb:CriticizedAccrualMember2023-03-310000036270us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:InterestRateSwapMemberus-gaap:FairValueHedgingMember2023-03-310000036270mtb:HomeEquityLinesAndLoansMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-12-310000036270us-gaap:OperatingSegmentsMembermtb:CommercialRealEstateSegmentMember2023-01-012023-03-310000036270mtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-01-012022-03-310000036270us-gaap:PreferredStockMember2022-12-310000036270mtb:RecreationalFinanceMembermtb:LongTermDebtTwoThousandTwentyTwoMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270us-gaap:InterestRateContractMember2023-01-012023-03-310000036270mtb:OtherLoansMember2022-12-310000036270mtb:CriticizedAccrualMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:ResidentialMortgageBankingMemberus-gaap:IntersegmentEliminationMember2022-01-012022-03-310000036270us-gaap:ResidentialMortgageMemberus-gaap:ResidentialPortfolioSegmentMember2023-03-310000036270mtb:RecreationalFinanceMemberus-gaap:PaymentDeferralMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMemberus-gaap:PassMembermtb:ResidentialBuilderAndDeveloperMember2022-12-310000036270us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:LongTermDebtMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310000036270mtb:PeoplesUnitedFinancialIncMember2022-01-012022-03-310000036270mtb:CriticizedAccrualMembermtb:OtherCommercialConstructionMember2023-03-310000036270srt:MaximumMemberus-gaap:FairValueMeasurementsRecurringMembermtb:OtherAssetsAndOtherLiabilitiesMember2022-01-012022-12-310000036270us-gaap:OtherDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2023-03-310000036270us-gaap:OperatingSegmentsMembermtb:CommercialRealEstateSegmentMembersrt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMember2022-01-012022-03-310000036270mtb:ResidentialBuilderAndDeveloperMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-01-012023-03-310000036270mtb:SeriesASeriesCAndSeriesEPreferredStockMember2022-12-310000036270us-gaap:OperatingSegmentsMembermtb:RetailBankingMembersrt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMember2022-01-012022-03-310000036270us-gaap:AvailableforsaleSecuritiesMember2022-12-310000036270us-gaap:PreferredStockMember2023-03-310000036270mtb:OtherLoansMembermtb:LongTermDebtPriorPeriodMember2023-03-310000036270us-gaap:FairValueInputsLevel2Memberus-gaap:OtherDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000036270srt:WeightedAverageMemberus-gaap:FairValueMeasurementsRecurringMembermtb:OtherAssetsAndOtherLiabilitiesMember2022-01-012022-12-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandNineteenMemberus-gaap:PassMember2022-12-310000036270us-gaap:PassMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:RecreationalFinanceMember2022-01-012022-03-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:PassMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:OtherLoansMember2023-01-012023-03-310000036270mtb:RetailBankingMember2023-03-310000036270mtb:CriticizedNonaccrualMemberus-gaap:RevolvingCreditFacilityMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:LongTermDebtPriorPeriodMember2022-12-310000036270us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsNonrecurringMember2022-03-310000036270us-gaap:AllOtherSegmentsMember2022-12-310000036270us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsNonrecurringMember2022-12-310000036270mtb:RecreationalFinanceMembermtb:LongTermDebtTwoThousandTwentyMember2023-03-310000036270mtb:AccumulatedOtherMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandTwentyThreeMember2023-01-012023-03-310000036270mtb:HomeEquityLinesAndLoansMemberus-gaap:FinancialAssetNotPastDueMembermtb:RevolvingLoansConvertedToTermLoansMember2022-12-310000036270us-gaap:RevolvingCreditFacilityMembermtb:OtherLoansMember2023-03-310000036270us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMember2023-03-310000036270us-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310000036270us-gaap:OtherDebtSecuritiesMember2022-12-310000036270us-gaap:OperatingSegmentsMembermtb:BusinessBankingMembersrt:ScenarioPreviouslyReportedMember2022-01-012022-03-310000036270us-gaap:ResidentialMortgageBackedSecuritiesMember2022-12-310000036270mtb:ResidentialRealEstateLoansMemberus-gaap:FairValueInputsLevel3Member2022-12-3100000362702022-01-010000036270mtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270us-gaap:FairValueInputsLevel3Member2022-01-012022-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandEighteenMember2022-12-310000036270mtb:BayviewLendingGroupAndBayviewFinancialMember2022-01-012022-03-310000036270mtb:RecreationalFinanceMemberus-gaap:PaymentDeferralMember2023-01-012023-03-310000036270us-gaap:FinancialAssetNotPastDueMember2022-12-310000036270us-gaap:FairValueInputsLevel2Memberus-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueMeasurementsRecurringMember2023-03-310000036270mtb:HomeEquityLinesAndLoansMembermtb:LongTermDebtTwoThousandTwentyTwoMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270mtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandEighteenMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270us-gaap:AllOtherSegmentsMemberus-gaap:FiduciaryAndTrustMemberus-gaap:AccountingStandardsUpdate201409Member2022-01-012022-03-310000036270us-gaap:SeriesEPreferredStockMember2023-01-012023-03-310000036270us-gaap:RevolvingCreditFacilityMembermtb:ResidentialBuilderAndDeveloperMembermtb:CriticizedAccrualMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:AutomobileLoanMember2022-12-310000036270mtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandEighteenMembermtb:OtherCommercialConstructionMember2022-12-310000036270us-gaap:USStatesAndPoliticalSubdivisionsMember2022-12-310000036270us-gaap:SecuritiesInvestmentMember2022-12-310000036270us-gaap:ConsumerPortfolioSegmentMember2022-01-012022-03-310000036270us-gaap:RevolvingCreditFacilityMembermtb:OtherCommercialConstructionMember2023-03-310000036270mtb:ResidentialLimitedDocumentationMember2022-12-310000036270mtb:ForeignExchangeAndOtherOptionAndFuturesContractsMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedAccrualMembermtb:LongTermDebtTwoThousandTwentyTwoMember2022-12-310000036270mtb:HomeEquityLinesAndLoansMember2023-01-012023-03-310000036270us-gaap:VariableInterestEntityPrimaryBeneficiaryMember2023-03-310000036270us-gaap:RevolvingCreditFacilityMemberus-gaap:FinancialAssetNotPastDueMembermtb:ResidentialRealEstateExcludingAltAMember2023-03-310000036270mtb:ResidentialBuilderAndDeveloperMembermtb:CriticizedAccrualMember2022-12-310000036270mtb:ResidentialLimitedDocumentationMemberus-gaap:PaymentDeferralMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:OtherLoansMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandTwentyTwoMember2023-03-310000036270mtb:ResidentialLimitedDocumentationMembermtb:LongTermDebtPriorPeriodMember2023-03-310000036270mtb:RecreationalFinanceMembermtb:LongTermDebtTwoThousandTwentyThreeMember2023-03-310000036270mtb:OtherLoansMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270mtb:OtherCommercialConstructionMember2023-03-310000036270mtb:ResidentialLimitedDocumentationMember2022-03-310000036270mtb:LongTermDebtTwoThousandNineteenMemberus-gaap:PassMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270us-gaap:OperatingSegmentsMembermtb:RetailBankingMembersrt:RevisionOfPriorPeriodReclassificationAdjustmentMember2022-01-012022-03-310000036270us-gaap:PassMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:ClearinghouseCreditFacilitiesMember2022-12-310000036270mtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandTwentyMembermtb:OtherCommercialConstructionMember2023-03-310000036270us-gaap:CommonStockMember2022-03-310000036270us-gaap:AssetPledgedAsCollateralWithoutRightMembermtb:OtherConsumerLoansMember2023-03-310000036270mtb:RecreationalFinanceMembermtb:LongTermDebtPriorPeriodMember2023-01-012023-03-310000036270srt:MaximumMember2023-04-012023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMemberus-gaap:PassMembermtb:OtherCommercialConstructionMember2022-12-310000036270us-gaap:AllOtherSegmentsMemberus-gaap:IntersegmentEliminationMember2022-01-012022-03-310000036270us-gaap:PassMembermtb:LongTermDebtPriorPeriodMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:RevolvingCreditFacilityMembermtb:CriticizedAccrualMember2022-12-310000036270mtb:ResidentialLimitedDocumentationMember2022-01-012022-03-310000036270mtb:PeoplesUnitedFinancialIncMemberus-gaap:CommonStockMember2022-04-012022-04-010000036270mtb:LongTermDebtTwoThousandTwentyThreeMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270us-gaap:FairValueInputsLevel3Membermtb:OtherAssetsAndOtherLiabilitiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000036270mtb:SeriesFAndSeriesGPreferredStockMember2022-12-310000036270us-gaap:OperatingSegmentsMember2022-01-012022-03-310000036270mtb:ForeignExchangeAndOtherOptionAndFuturesContractsMember2022-01-012022-03-310000036270mtb:DiscretionaryPortfolioMember2022-01-012022-03-310000036270mtb:CriticizedNonaccrualMembermtb:LongTermDebtPriorPeriodMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270us-gaap:SeriesHPreferredStockMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:OtherLoansMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:OtherCommercialConstructionMember2022-12-310000036270mtb:LongTermDebtTwoThousandNineteenMemberus-gaap:AutomobileLoanMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMemberus-gaap:FinancialAssetNotPastDueMembermtb:ResidentialRealEstateExcludingAltAMember2023-03-310000036270us-gaap:RevolvingCreditFacilityMemberus-gaap:PassMembermtb:ResidentialBuilderAndDeveloperMember2022-12-310000036270mtb:CommercialFinancialLeasingMember2022-01-012022-03-310000036270us-gaap:FairValueInputsLevel2Member2022-12-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:CriticizedNonaccrualMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:RevolvingLoansConvertedToTermLoansMember2022-12-310000036270mtb:ResidentialLimitedDocumentationMembermtb:LongTermDebtPriorPeriodMember2023-01-012023-03-310000036270mtb:CommercialLoansAndLeasesMemberus-gaap:FairValueInputsLevel3Member2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtPriorPeriodMember2023-03-310000036270us-gaap:SeriesEPreferredStockMember2022-01-012022-03-310000036270mtb:CriticizedAccrualMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:CombinationOfModificationTypesMembermtb:HomeEquityLinesAndLoansMember2023-01-012023-03-310000036270mtb:RetailBankingMemberus-gaap:IntersegmentEliminationMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:HomeEquityLinesAndLoansMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270mtb:MTMember2022-04-010000036270mtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2023-03-310000036270mtb:OtherCommercialConstructionMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270us-gaap:AssetPledgedAsCollateralWithoutRightMemberus-gaap:FederalHomeLoanBankAdvancesMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2022-12-310000036270us-gaap:OperatingSegmentsMembermtb:CommercialBankingMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandEighteenMembermtb:CriticizedAccrualMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:FourPointSixFivePercentageFixedRateSeniorNotesDueToMatureInJanuary2026Member2023-01-012023-01-310000036270us-gaap:InterestIncomeMember2023-03-310000036270mtb:HomeEquityLinesAndLoansMemberus-gaap:FinancialAssetNotPastDueMembermtb:RevolvingLoansConvertedToTermLoansMember2023-03-310000036270us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsNonrecurringMember2022-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:ResidentialRealEstateExcludingAltAMember2022-12-310000036270us-gaap:FairValueHedgingMember2022-12-310000036270mtb:RetailBankingMemberus-gaap:AccountingStandardsUpdate201409Member2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandEighteenMembermtb:CriticizedAccrualMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:ResidentialBuilderAndDeveloperMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270mtb:LongTermDebtTwoThousandNineteenMemberus-gaap:PassMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:ResidentialRealEstateLoansMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310000036270us-gaap:RetainedEarningsMember2022-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandTwentyThreeMember2023-03-310000036270us-gaap:FinancialAssetNotPastDueMembermtb:ResidentialRealEstateExcludingAltAMember2023-03-3100000362702021-12-310000036270mtb:CommercialBankingMember2022-12-310000036270mtb:ResidentialMortgageBankingMemberus-gaap:OperatingSegmentsMembersrt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMember2022-01-012022-03-310000036270us-gaap:FiduciaryAndTrustMemberus-gaap:AccountingStandardsUpdate201409Member2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandEighteenMember2022-12-310000036270us-gaap:OperatingSegmentsMembermtb:DiscretionaryPortfolioMembersrt:ScenarioPreviouslyReportedMember2022-01-012022-03-310000036270us-gaap:RevolvingCreditFacilityMembermtb:CriticizedAccrualMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMember2022-12-310000036270mtb:OtherLoansMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyThreeMembermtb:ResidentialRealEstateExcludingAltAMember2023-03-310000036270mtb:DiscretionaryPortfolioMemberus-gaap:IntersegmentEliminationMember2022-01-012022-03-310000036270mtb:OtherCommercialConstructionMember2022-12-310000036270mtb:CommercialBankingMemberus-gaap:IntersegmentEliminationMember2022-01-012022-03-310000036270mtb:HomeEquityLinesAndLoansMembermtb:RevolvingLoansConvertedToTermLoansMember2022-12-310000036270us-gaap:OperatingSegmentsMembermtb:CommercialBankingMembersrt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMember2022-01-012022-03-310000036270us-gaap:PreferredStockMember2021-12-310000036270us-gaap:FairValueHedgingMember2023-01-012023-03-310000036270us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2023-03-310000036270us-gaap:AssetPledgedAsCollateralWithoutRightMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMembermtb:OtherLoansMember2023-01-012023-03-310000036270mtb:BusinessBankingMemberus-gaap:IntersegmentEliminationMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMembermtb:CriticizedAccrualMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:CombinationOfConcessionTypesMembermtb:ResidentialRealEstateExcludingAltAMember2022-01-012022-03-310000036270us-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyThreeMembermtb:OtherCommercialConstructionMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:ResidentialRealEstateExcludingAltAMember2023-01-012023-03-310000036270mtb:RecreationalFinanceMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:OtherLoansMember2023-01-012023-03-310000036270mtb:CommercialFinancialLeasingMember2022-03-310000036270us-gaap:ResidentialMortgageMemberus-gaap:AssetPledgedAsCollateralWithoutRightMemberus-gaap:FederalHomeLoanBankAdvancesMember2022-12-310000036270mtb:CombinationOfConcessionTypesMembermtb:ResidentialLimitedDocumentationMember2022-01-012022-03-310000036270us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:InterestRateSwapMemberus-gaap:FairValueHedgingMember2022-12-310000036270us-gaap:FairValueMeasurementsRecurringMember2023-03-310000036270mtb:OtherLoansMembermtb:LongTermDebtPriorPeriodMember2023-01-012023-03-310000036270mtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:HomeEquityLinesAndLoansMembermtb:LongTermDebtPriorPeriodMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:RecreationalFinanceMembermtb:LongTermDebtPriorPeriodMember2022-12-310000036270mtb:AccumulatedOtherMember2021-12-310000036270mtb:HomeEquityLinesAndLoansMemberus-gaap:PaymentDeferralMember2022-01-012022-03-310000036270us-gaap:PassMembermtb:ResidentialBuilderAndDeveloperMember2023-03-310000036270srt:MaximumMember2023-01-012023-03-310000036270mtb:HomeEquityLinesAndLoansMembermtb:LongTermDebtTwoThousandTwentyTwoMember2023-03-310000036270us-gaap:FairValueInputsLevel2Memberus-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000036270us-gaap:RetainedEarningsMember2023-03-310000036270mtb:CriticizedAccrualMembermtb:LongTermDebtTwoThousandTwentyTwoMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270us-gaap:CommercialRealEstatePortfolioSegmentMember2022-03-310000036270mtb:LongTermDebtTwoThousandEighteenMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:ResidentialBuilderAndDeveloperMember2022-12-310000036270us-gaap:InterestRateSwapMember2022-01-012022-03-310000036270us-gaap:CommercialRealEstatePortfolioSegmentMember2021-12-310000036270us-gaap:AllOtherSegmentsMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandTwentyThreeMembermtb:ResidentialBuilderAndDeveloperMembermtb:CriticizedAccrualMember2023-03-310000036270us-gaap:AssetPledgedAsCollateralWithoutRightMembermtb:CommercialLoansAndLeasesMember2023-03-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:PassMembermtb:LongTermDebtPriorPeriodMember2023-03-310000036270mtb:LongTermDebtPriorPeriodMemberus-gaap:AutomobileLoanMember2022-12-310000036270us-gaap:PaymentDeferralMembermtb:ResidentialRealEstateExcludingAltAMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMemberus-gaap:PassMembermtb:OtherCommercialConstructionMember2022-12-310000036270us-gaap:MortgageBankingMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:CommercialFinancialLeasingMember2022-12-310000036270us-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:HomeEquityLinesAndLoansMember2023-03-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:RevolvingCreditFacilityMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyThreeMember2023-01-012023-03-310000036270us-gaap:AllOtherSegmentsMemberus-gaap:DepositAccountMemberus-gaap:AccountingStandardsUpdate201409Member2023-01-012023-03-310000036270mtb:DiscretionaryPortfolioMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:RecreationalFinanceMember2022-12-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:OtherLoansMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270us-gaap:PassMembermtb:ResidentialBuilderAndDeveloperMember2022-12-310000036270mtb:CriticizedNonaccrualMembermtb:OtherCommercialConstructionMember2023-03-310000036270mtb:CommonStockIssuableMember2022-12-310000036270us-gaap:RevolvingCreditFacilityMembermtb:HomeEquityLinesAndLoansMember2023-01-012023-03-310000036270mtb:HomeEquityLinesAndLoansMembermtb:LongTermDebtPriorPeriodMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandTwentyThreeMember2023-03-310000036270us-gaap:InterestRateSwapMember2023-01-012023-03-310000036270us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:CarryingReportedAmountFairValueDisclosureMemberus-gaap:LongTermDebtMember2023-03-310000036270mtb:LongTermDebtTwoThousandEighteenMemberus-gaap:FinancialAssetNotPastDueMembermtb:ResidentialRealEstateExcludingAltAMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:AutomobileLoanMember2023-03-310000036270us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-03-310000036270us-gaap:OperatingSegmentsMembermtb:DiscretionaryPortfolioMember2022-01-012022-03-310000036270us-gaap:AllOtherSegmentsMemberus-gaap:FiduciaryAndTrustMemberus-gaap:AccountingStandardsUpdate201409Member2023-01-012023-03-310000036270us-gaap:CashFlowHedgingMembermtb:InterestPaymentsOnVariableRateCommercialRealEstateLoansMember2022-01-012022-12-310000036270mtb:FixedRateLongTermBorrowingsMemberus-gaap:FairValueHedgingMember2022-12-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandNineteenMembermtb:CriticizedAccrualMember2023-03-3100000362702022-01-012022-03-310000036270mtb:ResidentialRealEstateLoansMember2023-01-012023-03-310000036270mtb:CriticizedNonaccrualMembermtb:ResidentialBuilderAndDeveloperMember2022-12-310000036270mtb:ResidentialBuilderAndDeveloperMembermtb:LongTermDebtTwoThousandTwentyTwoMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:HomeEquityLinesAndLoansMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:BusinessBankingMember2022-01-012022-03-310000036270mtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandTwentyOneMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:CriticizedNonaccrualMembermtb:ResidentialBuilderAndDeveloperMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:RecreationalFinanceMember2022-12-310000036270us-gaap:InterestRateContractMember2022-12-310000036270mtb:RecreationalFinanceMembermtb:LongTermDebtTwoThousandTwentyTwoMember2022-12-310000036270mtb:CommonStockIssuableMember2023-01-012023-03-310000036270mtb:AccumulatedOtherMember2022-01-012022-03-310000036270mtb:CriticizedAccrualMembermtb:LongTermDebtPriorPeriodMembermtb:OtherCommercialConstructionMember2023-03-310000036270us-gaap:FiduciaryAndTrustMember2022-01-012022-03-310000036270mtb:BayviewLendingGroupMembermtb:OtherRevenuesFromOperationsMember2023-01-012023-03-310000036270mtb:RecreationalFinanceMembermtb:LongTermDebtPriorPeriodMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:CriticizedAccrualMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:ResidentialMortgageBankingMemberus-gaap:OperatingSegmentsMembersrt:RevisionOfPriorPeriodReclassificationAdjustmentMember2022-01-012022-03-310000036270mtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-01-012023-03-310000036270mtb:CriticizedAccrualMembermtb:LongTermDebtPriorPeriodMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270us-gaap:ResidentialMortgageMemberus-gaap:FairValueInputsLevel3Member2022-01-012022-03-310000036270mtb:CriticizedNonaccrualMemberus-gaap:RevolvingCreditFacilityMembermtb:OtherCommercialConstructionMember2022-12-310000036270us-gaap:ResidentialPortfolioSegmentMemberus-gaap:RealEstateLoanMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:RecreationalFinanceMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270us-gaap:TreasuryStockMember2022-01-012022-03-310000036270us-gaap:OperatingSegmentsMemberus-gaap:AllOtherSegmentsMembersrt:RevisionOfPriorPeriodReclassificationAdjustmentMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:CriticizedAccrualMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270mtb:LongTermDebtPriorPeriodMemberus-gaap:FinancialAssetNotPastDueMembermtb:ResidentialRealEstateExcludingAltAMember2022-12-310000036270us-gaap:DesignatedAsHedgingInstrumentMembermtb:FixedRateLongTermBorrowingsMemberus-gaap:InterestRateSwapMemberus-gaap:FairValueHedgingMember2022-01-012022-03-310000036270mtb:ResidentialBuilderAndDeveloperMember2023-03-310000036270mtb:BayviewFinancialMember2023-03-310000036270mtb:OtherCommercialConstructionMember2022-01-012022-03-310000036270us-gaap:RevolvingCreditFacilityMembermtb:ResidentialRealEstateExcludingAltAMember2022-12-310000036270mtb:BayviewFinancialMember2023-01-012023-03-310000036270us-gaap:RevolvingCreditFacilityMemberus-gaap:FinancialAssetNotPastDueMembermtb:ResidentialRealEstateExcludingAltAMember2022-12-310000036270us-gaap:DepositAccountMember2022-01-012022-03-310000036270mtb:BayviewLendingGroupAndBayviewFinancialMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedAccrualMembermtb:RevolvingLoansConvertedToTermLoansMember2022-12-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:PassMembermtb:LongTermDebtPriorPeriodMember2022-12-310000036270us-gaap:FairValueMeasurementsNonrecurringMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:CriticizedAccrualMembermtb:OtherCommercialConstructionMember2023-03-310000036270us-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyTwoMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:ResidentialRealEstateExcludingAltAMember2022-12-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:CriticizedNonaccrualMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:BusinessBankingMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyThreeMembermtb:CriticizedAccrualMembermtb:OtherCommercialConstructionMember2023-03-310000036270mtb:BusinessBankingMemberus-gaap:DepositAccountMemberus-gaap:AccountingStandardsUpdate201409Member2023-01-012023-03-310000036270us-gaap:RevolvingCreditFacilityMembermtb:ResidentialBuilderAndDeveloperMember2022-12-310000036270mtb:RetailBankingMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyThreeMembermtb:OtherLoansMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedAccrualMember2022-12-310000036270mtb:ResidentialMortgageBankingMemberus-gaap:OperatingSegmentsMember2022-01-012022-03-310000036270us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-01-012022-03-310000036270us-gaap:PassMembermtb:ResidentialBuilderAndDeveloperMembermtb:LongTermDebtTwoThousandTwentyTwoMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:HomeEquityLinesAndLoansMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270mtb:CommercialLoansAndLeasesMemberus-gaap:AssetPledgedAsCollateralWithoutRightMemberus-gaap:FederalHomeLoanBankAdvancesMember2022-12-310000036270mtb:LongTermDebtTwoThousandEighteenMemberus-gaap:AutomobileLoanMember2022-12-310000036270mtb:RetailBankingMember2023-01-012023-03-310000036270us-gaap:CommonStockMember2023-01-012023-03-310000036270mtb:HomeEquityLinesAndLoansMember2022-12-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:RevolvingCreditFacilityMembermtb:CriticizedAccrualMember2023-03-310000036270mtb:BusinessBankingMember2023-01-012023-03-310000036270mtb:HomeEquityLinesAndLoansMember2022-01-012022-03-310000036270us-gaap:PassMembermtb:LongTermDebtTwoThousandEighteenMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270us-gaap:OtherLiabilitiesMember2022-12-310000036270mtb:CommercialBankingMemberus-gaap:AccountingStandardsUpdate201409Member2023-01-012023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandEighteenMembermtb:CriticizedAccrualMember2022-12-310000036270mtb:ResidentialLimitedDocumentationMember2022-01-010000036270mtb:CriticizedNonaccrualMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:OtherLoansMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:CommercialRealEstateSegmentMemberus-gaap:IntersegmentEliminationMember2023-01-012023-03-310000036270us-gaap:CarryingReportedAmountFairValueDisclosureMembermtb:CommercialLoansAndLeasesMember2023-03-310000036270mtb:CommercialBankingMember2023-03-310000036270us-gaap:ResidentialMortgageBackedSecuritiesMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:HomeEquityLinesAndLoansMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:OtherLoansMember2022-12-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyOneMember2022-12-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedNonaccrualMember2022-12-310000036270mtb:BusinessBankingMember2023-03-310000036270mtb:HomeEquityLinesAndLoansMembermtb:RevolvingLoansConvertedToTermLoansMember2023-01-012023-03-310000036270mtb:ResidentialBuilderAndDeveloperMembermtb:LongTermDebtTwoThousandTwentyTwoMembermtb:CriticizedAccrualMember2023-03-310000036270us-gaap:LoansInsuredOrGuaranteedByUsGovernmentAuthoritiesMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:CriticizedNonaccrualMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:ResidentialLimitedDocumentationMembermtb:LongTermDebtPriorPeriodMember2022-12-310000036270mtb:CommercialFinancialLeasingMember2022-01-012022-03-310000036270mtb:ResidentialRealEstateExcludingAltAMember2023-01-012023-03-310000036270us-gaap:ResidentialPortfolioSegmentMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:OtherCommercialConstructionMember2022-12-310000036270us-gaap:CommercialRealEstatePortfolioSegmentMember2023-01-012023-03-310000036270mtb:CollectiveInvestmentTrustMemberus-gaap:FiduciaryAndTrustMemberus-gaap:SubsequentEventMember2023-04-012023-06-300000036270mtb:LongTermDebtTwoThousandTwentyTwoMembermtb:OtherLoansMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270us-gaap:ResidentialPortfolioSegmentMember2021-12-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedNonaccrualMembermtb:RevolvingLoansConvertedToTermLoansMember2022-12-310000036270mtb:LongTermDebtPriorPeriodMembermtb:ResidentialRealEstateExcludingAltAMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMemberus-gaap:PassMembermtb:OtherCommercialConstructionMember2023-03-310000036270mtb:CommercialRealEstateSegmentMemberus-gaap:IntersegmentEliminationMember2022-01-012022-03-310000036270us-gaap:PassMembermtb:ResidentialBuilderAndDeveloperMembermtb:LongTermDebtTwoThousandTwentyTwoMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:OtherLoansMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:ResidentialBuilderAndDeveloperMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:OtherLoansMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270us-gaap:AdditionalPaidInCapitalMember2023-01-012023-03-310000036270mtb:BayviewLendingGroupMember2023-03-310000036270us-gaap:CommonStockMember2023-03-310000036270us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:LongTermDebtMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-03-310000036270mtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandTwentyOneMembermtb:OtherCommercialConstructionMember2023-03-310000036270mtb:CommercialFinancialLeasingMember2021-12-310000036270mtb:LongTermDebtTwoThousandEighteenMembermtb:HomeEquityLinesAndLoansMember2022-12-310000036270mtb:CommercialLoansMember2023-01-012023-03-310000036270us-gaap:AutomobileLoanMember2022-01-012022-03-310000036270us-gaap:RevolvingCreditFacilityMembermtb:HomeEquityLinesAndLoansMember2023-03-310000036270us-gaap:RevolvingCreditFacilityMembermtb:ResidentialBuilderAndDeveloperMember2023-01-012023-03-310000036270mtb:CombinationOfModificationTypesMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:ResidentialBuilderAndDeveloperMembermtb:CriticizedAccrualMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270us-gaap:PaymentDeferralMembermtb:ResidentialRealEstateExcludingAltAMember2023-01-012023-03-310000036270us-gaap:TreasuryStockMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:RecreationalFinanceMember2023-01-012023-03-310000036270mtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandTwentyMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270us-gaap:AllOtherSegmentsMember2022-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandTwentyMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:ResidentialBuilderAndDeveloperMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMember2022-12-310000036270mtb:LongTermDebtTwoThousandEighteenMembermtb:ResidentialBuilderAndDeveloperMember2022-12-310000036270mtb:CriticizedNonaccrualMembermtb:ResidentialBuilderAndDeveloperMembermtb:LongTermDebtPriorPeriodMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyThreeMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:AutomobileLoanMember2023-03-310000036270us-gaap:ConsumerPortfolioSegmentMember2022-03-310000036270us-gaap:OperatingSegmentsMembermtb:DiscretionaryPortfolioMembersrt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMember2022-01-012022-03-310000036270us-gaap:CarryingReportedAmountFairValueDisclosureMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:CriticizedAccrualMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270us-gaap:RevolvingCreditFacilityMembermtb:OtherLoansMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270us-gaap:RevolvingCreditFacilityMembermtb:ResidentialBuilderAndDeveloperMembermtb:CriticizedAccrualMember2022-12-310000036270us-gaap:AssetPledgedAsCollateralWithoutRightMemberus-gaap:HomeEquityMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyThreeMembermtb:OtherLoansMember2023-03-310000036270mtb:PeoplesUnitedFinancialIncMember2022-04-012022-04-010000036270mtb:RevolvingLoansConvertedToTermLoansMember2023-03-310000036270us-gaap:CommonStockMember2021-12-310000036270mtb:CommercialLoansAndLeasesMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-03-310000036270mtb:LongTermDebtPriorPeriodMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:ForeignExchangeAndOtherOptionAndFuturesContractsMember2023-03-310000036270srt:MinimumMembermtb:OtherAssetsAndOtherLiabilitiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-01-012022-12-310000036270mtb:HomeEquityLinesAndLoansMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:ResidentialRealEstateExcludingAltAMember2022-03-310000036270mtb:LongTermDebtTwoThousandEighteenMembermtb:OtherLoansMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270us-gaap:AllOtherSegmentsMember2023-01-012023-03-310000036270mtb:ResidentialLimitedDocumentationMember2023-01-012023-03-310000036270us-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandTwentyOneMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMemberus-gaap:AutomobileLoanMember2023-01-012023-03-310000036270mtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMemberus-gaap:FairValueInputsLevel3Member2023-03-310000036270mtb:LongTermDebtPriorPeriodMembermtb:ResidentialRealEstateExcludingAltAMember2023-01-012023-03-310000036270us-gaap:PassMembermtb:LongTermDebtTwoThousandEighteenMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:CommercialBankingMember2023-01-012023-03-310000036270mtb:OtherModificationsMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2022-01-012022-03-310000036270us-gaap:AdditionalPaidInCapitalMember2021-12-310000036270us-gaap:OperatingSegmentsMemberus-gaap:AllOtherSegmentsMember2022-01-012022-03-310000036270mtb:CommercialRealEstateSegmentMember2023-01-012023-03-310000036270us-gaap:AllOtherSegmentsMemberus-gaap:AccountingStandardsUpdate201409Member2022-01-012022-03-310000036270us-gaap:ResidentialPortfolioSegmentMember2022-12-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:OtherLoansMember2022-12-310000036270mtb:ForeignExchangeAndOtherOptionAndFuturesContractsMember2022-12-310000036270us-gaap:RevolvingCreditFacilityMembermtb:HomeEquityLinesAndLoansMember2022-12-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyThreeMember2023-03-310000036270us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-01-012022-03-310000036270us-gaap:OperatingSegmentsMembermtb:BusinessBankingMembersrt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMember2022-01-012022-03-310000036270us-gaap:RevolvingCreditFacilityMembermtb:OtherLoansMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:RecreationalFinanceMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270us-gaap:CashFlowHedgingMembermtb:InterestPaymentsOnVariableRateCommercialRealEstateLoansMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:CriticizedAccrualMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:OtherLoansMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270mtb:LongTermDebtPriorPeriodMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedNonaccrualMember2023-03-310000036270us-gaap:SeriesFPreferredStockMember2023-01-012023-03-310000036270us-gaap:AllOtherSegmentsMember2023-03-310000036270us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMembermtb:OtherAssetsAndOtherLiabilitiesMember2023-01-012023-03-310000036270mtb:ResidentialBuilderAndDeveloperMembermtb:LongTermDebtPriorPeriodMember2023-01-012023-03-310000036270us-gaap:OtherDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000036270us-gaap:ResidentialPortfolioSegmentMemberus-gaap:RealEstateLoanMember2022-12-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-01-012023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandTwentyMember2022-12-310000036270us-gaap:CommercialRealEstatePortfolioSegmentMember2023-01-012023-03-310000036270mtb:OtherCommercialConstructionMember2022-01-010000036270mtb:HospitalityMember2022-03-310000036270us-gaap:AutomobileLoanMember2022-01-010000036270mtb:RecreationalFinanceMembermtb:LongTermDebtTwoThousandEighteenMember2022-12-310000036270mtb:ResidentialRealEstateLoansMemberus-gaap:FairValueInputsLevel3Member2023-03-310000036270mtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMemberus-gaap:FairValueInputsLevel3Member2022-12-310000036270mtb:ResidentialBuilderAndDeveloperMember2023-01-012023-03-310000036270us-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270us-gaap:AutomobileLoanMember2023-03-310000036270mtb:ResidentialBuilderAndDeveloperMember2022-03-310000036270mtb:CombinationOfConcessionTypesMember2022-01-012022-03-310000036270us-gaap:PassMembermtb:ResidentialBuilderAndDeveloperMembermtb:LongTermDebtPriorPeriodMember2022-12-310000036270mtb:CommercialFinancialLeasingMember2022-12-310000036270us-gaap:AutomobileLoanMemberus-gaap:PaymentDeferralMember2022-01-012022-03-310000036270us-gaap:OperatingSegmentsMembersrt:RevisionOfPriorPeriodReclassificationAdjustmentMembermtb:DiscretionaryPortfolioMember2022-01-012022-03-310000036270us-gaap:ResidentialMortgageMemberus-gaap:FairValueInputsLevel3Member2023-03-310000036270us-gaap:SeriesGPreferredStockMember2023-01-012023-03-310000036270mtb:DiscretionaryPortfolioMember2022-03-310000036270mtb:LongTermDebtTwoThousandTwentyThreeMemberus-gaap:AutomobileLoanMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:ResidentialRealEstateExcludingAltAMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMemberus-gaap:FinancialAssetNotPastDueMembermtb:ResidentialRealEstateExcludingAltAMember2023-03-310000036270us-gaap:ResidentialMortgageMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-03-310000036270mtb:CriticizedNonaccrualMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:ResidentialBuilderAndDeveloperMember2022-12-310000036270mtb:CommercialFinancialLeasingMember2023-03-310000036270mtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandTwentyTwoMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:CriticizedNonaccrualMembermtb:LongTermDebtPriorPeriodMembermtb:OtherCommercialConstructionMember2023-03-310000036270us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-03-310000036270srt:MinimumMembermtb:OtherAssetsAndOtherLiabilitiesMemberus-gaap:FairValueMeasurementsRecurringMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:RecreationalFinanceMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:CriticizedAccrualMembermtb:OtherCommercialConstructionMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:ResidentialRealEstateLoansMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMemberus-gaap:PassMembermtb:ResidentialBuilderAndDeveloperMember2023-03-310000036270us-gaap:NondesignatedMemberus-gaap:FairValueHedgingMember2022-12-310000036270mtb:RetailBankingMember2022-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270us-gaap:RetainedEarningsMember2023-01-012023-03-310000036270us-gaap:AutomobileLoanMemberus-gaap:PaymentDeferralMember2023-01-012023-03-310000036270mtb:ResidentialMortgageBankingMember2023-03-310000036270mtb:LongTermDebtPriorPeriodMembermtb:ResidentialRealEstateExcludingAltAMember2022-12-310000036270mtb:LongTermDebtTwoThousandEighteenMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:AutomobileLoanMember2022-12-310000036270us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-03-310000036270us-gaap:AdditionalPaidInCapitalMember2023-03-310000036270us-gaap:PreferredStockMember2022-03-310000036270us-gaap:AutomobileLoanMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyThreeMembermtb:ResidentialBuilderAndDeveloperMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMemberus-gaap:FinancialAssetNotPastDueMembermtb:ResidentialRealEstateExcludingAltAMember2022-12-310000036270mtb:CommercialFinancialLeasingMember2022-12-310000036270us-gaap:RetainedEarningsMember2022-01-012022-03-310000036270us-gaap:RevolvingCreditFacilityMembermtb:ResidentialBuilderAndDeveloperMember2023-03-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyMember2023-03-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:PassMembermtb:RevolvingLoansConvertedToTermLoansMember2023-03-310000036270mtb:RevolvingLoansConvertedToTermLoansMember2023-01-012023-03-310000036270mtb:BayviewFinancialMember2022-01-012022-03-310000036270us-gaap:RevolvingCreditFacilityMemberus-gaap:PassMembermtb:ResidentialBuilderAndDeveloperMember2023-03-310000036270mtb:LongTermDebtTwoThousandEighteenMembermtb:ResidentialBuilderAndDeveloperMembermtb:CriticizedAccrualMember2022-12-310000036270mtb:ResidentialRealEstateLoansMemberus-gaap:FairValueInputsLevel2Member2022-12-310000036270us-gaap:ResidentialMortgageMemberus-gaap:FairValueInputsLevel3Member2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMemberus-gaap:FinancialAssetNotPastDueMembermtb:ResidentialRealEstateExcludingAltAMember2023-03-310000036270us-gaap:OperatingSegmentsMembermtb:DiscretionaryPortfolioMember2023-01-012023-03-310000036270mtb:OtherLoansMembermtb:LongTermDebtPriorPeriodMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandTwentyTwoMember2022-12-310000036270mtb:CriticizedNonaccrualMembermtb:LongTermDebtPriorPeriodMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:CommercialLoansAndLeasesMemberus-gaap:FairValueInputsLevel3Member2022-12-310000036270mtb:RecreationalFinanceMember2023-01-012023-03-310000036270us-gaap:SeriesGPreferredStockMember2022-01-012022-03-310000036270mtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandTwentyOneMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:OtherLoansMember2022-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandTwentyOneMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedNonaccrualMemberus-gaap:RevolvingCreditFacilityMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:RecreationalFinanceMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:CommercialFinancialLeasingMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:ResidentialBuilderAndDeveloperMembermtb:CriticizedAccrualMember2022-12-310000036270mtb:CommercialRealEstateLoansMember2023-01-012023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandTwentyMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyThreeMemberus-gaap:FinancialAssetNotPastDueMembermtb:ResidentialRealEstateExcludingAltAMember2023-03-310000036270us-gaap:FairValueInputsLevel2Memberus-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyMember2022-12-310000036270us-gaap:RevolvingCreditFacilityMembermtb:HomeEquityLinesAndLoansMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270mtb:BayviewFinancialMemberus-gaap:ParentMembermtb:SyndicatedLoanFacilityMember2023-03-310000036270mtb:ResidentialMortgageBankingMemberus-gaap:OperatingSegmentsMembersrt:ScenarioPreviouslyReportedMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandNineteenMember2023-01-012023-03-310000036270mtb:OtherLoansMembermtb:LongTermDebtPriorPeriodMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:PaymentDeferralMember2023-01-012023-03-310000036270srt:MinimumMember2023-03-310000036270mtb:RetailBankingMemberus-gaap:DepositAccountMemberus-gaap:AccountingStandardsUpdate201409Member2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMembermtb:CriticizedAccrualMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:RecreationalFinanceMembermtb:LongTermDebtTwoThousandTwentyThreeMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:CombinationOfModificationTypesMembermtb:ResidentialRealEstateExcludingAltAMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:CriticizedAccrualMembermtb:OtherCommercialConstructionMember2022-12-310000036270us-gaap:PassMemberus-gaap:RevolvingCreditFacilityMembermtb:OtherCommercialConstructionMember2023-03-310000036270mtb:ResidentialLimitedDocumentationMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:AutomobileLoanMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandTwentyOneMember2022-12-310000036270us-gaap:CommercialMortgageBackedSecuritiesMember2023-03-310000036270us-gaap:FairValueHedgingMember2023-03-310000036270mtb:ResidentialBuilderAndDeveloperMembermtb:CriticizedAccrualMembermtb:LongTermDebtTwoThousandTwentyTwoMember2022-12-310000036270us-gaap:DepositAccountMembermtb:CommercialBankingMemberus-gaap:AccountingStandardsUpdate201409Member2023-01-012023-03-310000036270mtb:LongTermDebtPriorPeriodMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMemberus-gaap:AutomobileLoanMember2022-12-310000036270mtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2022-12-310000036270us-gaap:DepositAccountMemberus-gaap:AccountingStandardsUpdate201409Member2022-01-012022-03-310000036270us-gaap:FinancialAssetNotPastDueMemberus-gaap:AutomobileLoanMember2023-03-310000036270us-gaap:InterestRateContractMemberus-gaap:NondesignatedMemberus-gaap:FairValueHedgingMember2023-03-310000036270us-gaap:NondesignatedMember2023-03-310000036270us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000036270mtb:DiscretionaryPortfolioMemberus-gaap:AccountingStandardsUpdate201409Member2023-01-012023-03-310000036270mtb:LongTermDebtPriorPeriodMembermtb:OtherCommercialConstructionMember2022-12-310000036270us-gaap:ConsumerPortfolioSegmentMember2023-03-310000036270mtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-03-310000036270us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMember2023-01-012023-03-310000036270us-gaap:AdditionalPaidInCapitalMember2022-03-310000036270mtb:CommercialFinancialLeasingMember2023-01-012023-03-310000036270us-gaap:FairValueInputsLevel3Membermtb:OtherAssetsAndOtherLiabilitiesMemberus-gaap:FairValueMeasurementsRecurringMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:AutomobileLoanMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandTwentyMember2022-12-310000036270mtb:CommercialBankingMember2022-03-310000036270us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000036270mtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:ResidentialRealEstateExcludingAltAMember2022-01-012022-03-3100000362702022-04-012022-04-010000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:OtherLoansMember2022-12-310000036270us-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:CommercialFinancialLeasingMember2022-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:RecreationalFinanceMember2022-12-310000036270mtb:OtherLoansMember2023-01-012023-03-310000036270us-gaap:OperatingSegmentsMembersrt:ScenarioPreviouslyReportedMembermtb:CommercialBankingMember2022-01-012022-03-310000036270us-gaap:InterestRateSwapMembermtb:MaturityPeriodTwoMember2023-01-012023-03-310000036270us-gaap:FiduciaryAndTrustMemberus-gaap:AccountingStandardsUpdate201409Member2022-01-012022-03-310000036270mtb:CommercialRealEstateSegmentMember2022-12-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandTwentyMembermtb:CriticizedAccrualMember2022-12-310000036270mtb:ResidentialBuilderAndDeveloperMember2022-01-010000036270us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMemberus-gaap:PassMembermtb:OtherCommercialConstructionMember2023-03-310000036270us-gaap:RetainedEarningsMember2022-12-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedAccrualMember2023-03-310000036270us-gaap:ResidentialPortfolioSegmentMember2022-03-310000036270mtb:ResidentialBuilderAndDeveloperMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandEighteenMember2022-12-310000036270us-gaap:AllOtherSegmentsMemberus-gaap:AccountingStandardsUpdate201409Member2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:CommercialFinancialLeasingMembermtb:CriticizedAccrualMember2022-12-310000036270mtb:CriticizedAccrualMembermtb:LongTermDebtPriorPeriodMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandTwentyOneMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:RevolvingLoansConvertedToTermLoansMember2022-12-310000036270mtb:CriticizedNonaccrualMembermtb:ResidentialBuilderAndDeveloperMembermtb:LongTermDebtTwoThousandTwentyTwoMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMemberus-gaap:AutomobileLoanMember2023-03-310000036270us-gaap:RevolvingCreditFacilityMembermtb:CriticizedNonaccrualMembermtb:OtherCommercialConstructionMember2023-03-310000036270us-gaap:CashFlowHedgingMembermtb:InterestPaymentsOnVariableRateCommercialRealEstateLoansMember2023-03-310000036270mtb:OtherModificationsMembermtb:CommercialFinancialLeasingMember2022-01-012022-03-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:PassMember2022-12-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandTwentyTwoMember2022-12-310000036270mtb:AccumulatedOtherAdjustmentMember2023-01-012023-03-310000036270us-gaap:FairValueMeasurementsNonrecurringMember2022-03-310000036270mtb:LongTermDebtTwoThousandEighteenMembermtb:OtherCommercialConstructionMember2022-12-310000036270us-gaap:FiduciaryAndTrustMember2023-01-012023-03-310000036270mtb:FourPointSevenZeroPercentageFixedRateSeniorNotesDueToMatureInJanuary2028Member2023-01-310000036270mtb:ResidentialRealEstateExcludingAltAMember2023-03-310000036270us-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyMembermtb:ResidentialBuilderAndDeveloperMember2023-03-310000036270mtb:HomeEquityLinesAndLoansMember2022-03-310000036270us-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:RecreationalFinanceMember2023-01-012023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandTwentyTwoMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMemberus-gaap:FinancialAssetNotPastDueMembermtb:ResidentialRealEstateExcludingAltAMember2022-12-310000036270mtb:ResidentialMortgageBankingMemberus-gaap:IntersegmentEliminationMember2023-01-012023-03-310000036270mtb:RecreationalFinanceMembermtb:LongTermDebtTwoThousandTwentyTwoMember2023-03-310000036270mtb:ResidentialRealEstateLoansMemberus-gaap:FairValueInputsLevel2Member2023-03-310000036270us-gaap:RevolvingCreditFacilityMember2022-12-310000036270us-gaap:FairValueInputsLevel2Memberus-gaap:OtherDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2023-03-310000036270us-gaap:SecuritiesInvestmentMember2021-12-310000036270mtb:BayviewLendingGroupAndBayviewFinancialMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:OtherCommercialConstructionMember2023-03-310000036270mtb:HomeEquityLinesAndLoansMembermtb:LongTermDebtTwoThousandTwentyThreeMember2023-03-310000036270us-gaap:AllOtherSegmentsMemberus-gaap:DepositAccountMemberus-gaap:AccountingStandardsUpdate201409Member2022-01-012022-03-310000036270us-gaap:NondesignatedMember2022-12-310000036270us-gaap:NondesignatedMembermtb:ForeignExchangeAndOtherOptionAndFuturesContractsMemberus-gaap:FairValueHedgingMember2023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandTwentyOneMembermtb:CriticizedAccrualMember2022-12-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:RevolvingCreditFacilityMember2022-12-310000036270mtb:OtherLoansMemberus-gaap:PaymentDeferralMember2022-01-012022-03-310000036270mtb:LongTermDebtPriorPeriodMember2023-01-012023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedNonaccrualMembermtb:RevolvingLoansConvertedToTermLoansMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:ResidentialRealEstateExcludingAltAMember2022-12-310000036270us-gaap:RetainedEarningsMember2021-12-310000036270mtb:ForwardStartingInterestRateSwapAgreementsMember2022-12-310000036270us-gaap:OperatingSegmentsMembermtb:CommercialRealEstateSegmentMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:ResidentialMortgageBankingMember2023-01-012023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandTwentyOneMembermtb:CriticizedNonaccrualMember2023-03-310000036270us-gaap:InterestIncomeMember2022-03-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMemberus-gaap:AutomobileLoanMember2022-12-310000036270mtb:BusinessBankingMemberus-gaap:DepositAccountMemberus-gaap:AccountingStandardsUpdate201409Member2022-01-012022-03-310000036270mtb:RecreationalFinanceMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270us-gaap:CommercialRealEstatePortfolioSegmentMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:HomeEquityLinesAndLoansMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:MortgageRelatedCommitmentsToOriginateRealEstateLoansForSaleMemberus-gaap:NondesignatedMemberus-gaap:FairValueHedgingMember2022-12-310000036270mtb:CommercialBankingMemberus-gaap:IntersegmentEliminationMember2023-01-012023-03-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:PassMembermtb:RevolvingLoansConvertedToTermLoansMember2022-12-310000036270mtb:HomeEquityLinesAndLoansMembermtb:LongTermDebtPriorPeriodMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270mtb:CriticizedNonaccrualMembermtb:ResidentialBuilderAndDeveloperMembermtb:LongTermDebtTwoThousandTwentyTwoMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:ResidentialBuilderAndDeveloperMembermtb:CriticizedAccrualMember2022-12-310000036270us-gaap:OperatingSegmentsMembermtb:RetailBankingMember2022-01-012022-03-310000036270us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-12-310000036270srt:MinimumMembermtb:CommercialLoansAndCommercialRealEstateMember2023-03-310000036270mtb:CoreDepositAndOtherIntangibleAssetsMembermtb:PeoplesUnitedFinancialIncMembersrt:MinimumMember2022-04-012022-04-010000036270mtb:LongTermDebtTwoThousandTwentyTwoMembermtb:OtherLoansMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:CombinationOfConcessionTypesMembermtb:HomeEquityLinesAndLoansMember2022-01-012022-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedAccrualMembermtb:RevolvingLoansConvertedToTermLoansMember2023-03-310000036270mtb:BayviewLendingGroupMembermtb:OtherRevenuesFromOperationsMember2022-01-012022-03-310000036270us-gaap:OperatingSegmentsMembersrt:RevisionOfPriorPeriodReclassificationAdjustmentMembermtb:CommercialRealEstateSegmentMember2022-01-012022-03-310000036270us-gaap:AccountingStandardsUpdate201409Member2023-01-012023-03-3100000362702023-05-010000036270mtb:CommercialFinancialLeasingMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:OtherCommercialConstructionMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270srt:MaximumMembermtb:OtherAssetsAndOtherLiabilitiesMemberus-gaap:FairValueMeasurementsRecurringMember2023-01-012023-03-310000036270us-gaap:RevolvingCreditFacilityMembermtb:OtherLoansMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270us-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:HomeEquityLinesAndLoansMembermtb:RevolvingLoansConvertedToTermLoansMember2023-03-310000036270mtb:HomeEquityLinesAndLoansMember2022-01-010000036270us-gaap:SecuritiesInvestmentMember2023-03-3100000362702023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandTwentyOneMembermtb:CriticizedAccrualMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:ResidentialRealEstateExcludingAltAMember2023-01-012023-03-310000036270us-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyOneMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270us-gaap:DesignatedAsHedgingInstrumentMembermtb:FixedRateLongTermBorrowingsMemberus-gaap:InterestRateSwapMemberus-gaap:FairValueHedgingMember2023-01-012023-03-310000036270us-gaap:AccountingStandardsUpdate201409Member2022-01-012022-03-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:RevolvingCreditFacilityMemberus-gaap:PassMember2022-12-310000036270mtb:ResidentialLimitedDocumentationMember2023-03-310000036270us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMembermtb:OtherAssetsAndOtherLiabilitiesMember2021-12-310000036270us-gaap:TreasuryStockMember2022-03-310000036270us-gaap:FairValueInputsLevel1Member2023-03-310000036270us-gaap:ResidentialPortfolioSegmentMember2023-03-310000036270us-gaap:SeriesFPreferredStockMember2022-01-012022-03-310000036270us-gaap:OperatingSegmentsMembermtb:BusinessBankingMember2023-01-012023-03-310000036270mtb:AccumulatedOtherMember2022-03-310000036270mtb:AccumulatedOtherAdjustmentMember2023-03-310000036270mtb:CriticizedAccrualMembermtb:LongTermDebtPriorPeriodMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:CommercialFinancialLeasingMember2023-03-310000036270mtb:CriticizedNonaccrualMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyThreeMember2023-03-310000036270mtb:PeoplesUnitedFinancialIncMemberus-gaap:FinancialServiceMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandNineteenMemberus-gaap:PassMembermtb:ResidentialBuilderAndDeveloperMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:HomeEquityLinesAndLoansMember2023-03-310000036270us-gaap:VariableInterestEntityPrimaryBeneficiaryMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:AutomobileLoanMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:OtherLoansMember2023-01-012023-03-310000036270mtb:OtherModificationsMember2022-01-012022-03-310000036270us-gaap:NondesignatedMembermtb:CommitmentsToSellRealEstateLoansMemberus-gaap:FairValueHedgingMember2023-03-310000036270mtb:AccumulatedOtherMember2022-12-310000036270mtb:ResidentialMortgageBankingMember2022-03-310000036270mtb:FivePointZeroFiveThreePercentageFixedRateSeniorNotesDueToMatureInJanuary2034Member2023-01-012023-01-310000036270us-gaap:CashFlowHedgingMember2022-01-012022-12-310000036270mtb:ResidentialLimitedDocumentationMembermtb:LongTermDebtPriorPeriodMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270mtb:BayviewFinancialMembermtb:SyndicatedLoanFacilityMember2023-03-310000036270us-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyThreeMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:RetailBankingMemberus-gaap:DepositAccountMemberus-gaap:AccountingStandardsUpdate201409Member2022-01-012022-03-310000036270us-gaap:SecuritiesInvestmentMember2022-03-310000036270mtb:BusinessBankingMemberus-gaap:AccountingStandardsUpdate201409Member2022-01-012022-03-310000036270mtb:ResidentialMortgageBankingMemberus-gaap:AccountingStandardsUpdate201409Member2022-01-012022-03-310000036270mtb:ResidentialMortgageBankingMemberus-gaap:AccountingStandardsUpdate201409Member2023-01-012023-03-310000036270us-gaap:OperatingSegmentsMembersrt:RevisionOfPriorPeriodReclassificationAdjustmentMembermtb:CommercialBankingMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMember2023-01-012023-03-310000036270us-gaap:FairValueInputsLevel3Member2022-12-310000036270us-gaap:CommercialRealEstatePortfolioSegmentMember2023-03-310000036270mtb:ResidentialRealEstateExcludingAltAMember2022-01-010000036270us-gaap:ConsumerPortfolioSegmentMember2023-01-012023-03-310000036270us-gaap:RevolvingCreditFacilityMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyOneMemberus-gaap:AutomobileLoanMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:ResidentialBuilderAndDeveloperMembermtb:CriticizedAccrualMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:CriticizedAccrualMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:OtherLoansMembermtb:LongTermDebtPriorPeriodMember2022-12-310000036270us-gaap:USStatesAndPoliticalSubdivisionsMember2023-03-310000036270mtb:LongTermDebtPriorPeriodMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-01-012023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandTwentyMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:OtherCommercialConstructionMember2023-03-3100000362702022-12-310000036270us-gaap:OperatingSegmentsMemberus-gaap:AllOtherSegmentsMembersrt:ScenarioPreviouslyReportedMember2022-01-012022-03-310000036270mtb:CriticizedNonaccrualMembermtb:LongTermDebtPriorPeriodMembermtb:OtherCommercialConstructionMember2022-12-310000036270mtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-01-010000036270us-gaap:MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:ResidentialBuilderAndDeveloperMember2023-03-310000036270mtb:RecreationalFinanceMembermtb:LongTermDebtTwoThousandTwentyTwoMember2023-01-012023-03-310000036270us-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyTwoMembermtb:OtherCommercialConstructionMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270srt:MaximumMember2023-03-310000036270mtb:ResidentialMortgageBankingMemberus-gaap:OperatingSegmentsMember2023-01-012023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedNonaccrualMemberus-gaap:RevolvingCreditFacilityMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMembermtb:OtherLoansMember2022-12-310000036270us-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyTwoMembermtb:OtherCommercialConstructionMember2022-12-310000036270us-gaap:RevolvingCreditFacilityMembermtb:OtherLoansMember2023-01-012023-03-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedAccrualMembermtb:LongTermDebtPriorPeriodMember2022-12-310000036270us-gaap:RevolvingCreditFacilityMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270us-gaap:RevolvingCreditFacilityMembermtb:CriticizedAccrualMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:CriticizedAccrualMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:OtherCommercialConstructionMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270mtb:CommercialRealEstateSegmentMember2022-01-012022-03-310000036270mtb:ResidentialLimitedDocumentationMembermtb:LongTermDebtPriorPeriodMemberus-gaap:FinancialAssetNotPastDueMember2022-12-310000036270us-gaap:OperatingSegmentsMembermtb:CommercialRealEstateSegmentMembersrt:ScenarioPreviouslyReportedMember2022-01-012022-03-310000036270mtb:FivePointZeroFiveThreePercentageFixedRateSeniorNotesDueToMatureInJanuary2034Member2023-01-310000036270us-gaap:FinancialAssetNotPastDueMemberus-gaap:AutomobileLoanMember2022-12-310000036270mtb:BusinessBankingMemberus-gaap:AccountingStandardsUpdate201409Member2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:RecreationalFinanceMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:OtherLoansMember2023-03-310000036270us-gaap:DepositAccountMembermtb:CommercialRealEstateSegmentMemberus-gaap:AccountingStandardsUpdate201409Member2023-01-012023-03-310000036270us-gaap:ResidentialMortgageMemberus-gaap:ResidentialPortfolioSegmentMember2022-12-310000036270mtb:LongTermDebtPriorPeriodMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:AutomobileLoanMember2023-03-310000036270mtb:MortgageRelatedCommitmentsToOriginateRealEstateLoansForSaleMemberus-gaap:NondesignatedMemberus-gaap:FairValueHedgingMember2023-03-310000036270us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandTwentyTwoMembermtb:ResidentialRealEstateExcludingAltAMember2023-01-012023-03-310000036270us-gaap:AutomobileLoanMember2023-01-012023-03-3100000362702022-04-010000036270mtb:SeriesFAndSeriesGPreferredStockMember2023-03-310000036270us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsNonrecurringMember2023-03-310000036270mtb:ResidentialBuilderAndDeveloperMembermtb:CriticizedAccrualMember2023-03-310000036270mtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandTwentyTwoMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:ResidentialMortgageBankingMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyMembermtb:CriticizedAccrualMembermtb:OtherCommercialConstructionMember2023-03-310000036270mtb:CombinationOfConcessionTypesMembermtb:CommercialFinancialLeasingMember2022-01-012022-03-310000036270mtb:MaturityPeriodThreeMemberus-gaap:InterestRateSwapMember2023-01-012023-03-310000036270mtb:HomeEquityLinesAndLoansMembermtb:LongTermDebtTwoThousandTwentyTwoMember2022-12-310000036270mtb:CommercialFinancialLeasingMembermtb:CriticizedNonaccrualMembermtb:LongTermDebtPriorPeriodMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMember2023-03-310000036270mtb:OtherLoansMemberus-gaap:FinancialAssetNotPastDueMembermtb:RevolvingLoansConvertedToTermLoansMember2023-03-310000036270us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2023-03-310000036270us-gaap:TreasuryStockMember2021-12-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:PassMembermtb:LongTermDebtTwoThousandTwentyTwoMember2023-03-310000036270mtb:BayviewFinancialMember2022-12-310000036270mtb:BusinessBankingMemberus-gaap:IntersegmentEliminationMember2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMemberus-gaap:AutomobileLoanMember2023-03-310000036270mtb:CriticizedNonaccrualMembermtb:ResidentialBuilderAndDeveloperMember2023-03-310000036270us-gaap:OperatingSegmentsMember2023-01-012023-03-310000036270us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsNonrecurringMember2023-03-310000036270mtb:OtherCommercialConstructionMember2023-03-310000036270us-gaap:FairValueInputsLevel2Membermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270us-gaap:RevolvingCreditFacilityMembermtb:CriticizedNonaccrualMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:RecreationalFinanceMember2022-01-010000036270mtb:LongTermDebtPriorPeriodMemberus-gaap:AutomobileLoanMember2023-03-310000036270us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsNonrecurringMember2022-12-310000036270us-gaap:PassMembermtb:OtherCommercialConstructionMember2023-03-310000036270us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2023-01-012023-03-310000036270us-gaap:CashFlowHedgingMembermtb:InterestPaymentsOnVariableRateCommercialRealEstateLoansMember2022-12-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:ResidentialBuilderAndDeveloperMember2022-12-310000036270mtb:CommercialFinancialLeasingMember2022-01-010000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtPriorPeriodMember2022-12-310000036270us-gaap:ResidentialPortfolioSegmentMember2022-01-012022-03-310000036270mtb:BusinessBankingMember2022-03-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandTwentyThreeMembermtb:CriticizedAccrualMember2023-03-310000036270mtb:ResidentialBuilderAndDeveloperMember2022-01-012022-03-310000036270us-gaap:DepositAccountMembermtb:CommercialRealEstateSegmentMemberus-gaap:AccountingStandardsUpdate201409Member2022-01-012022-03-310000036270us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:CarryingReportedAmountFairValueDisclosureMemberus-gaap:LongTermDebtMember2022-12-310000036270mtb:LongTermDebtTwoThousandNineteenMemberus-gaap:AutomobileLoanMember2022-12-310000036270us-gaap:SecuritiesInvestmentMember2023-01-012023-03-310000036270mtb:SeriesIPreferredStocksMember2023-01-012023-03-310000036270mtb:AccumulatedOtherAdjustmentMember2022-12-310000036270mtb:RecreationalFinanceMembermtb:LongTermDebtPriorPeriodMemberus-gaap:FinancialAssetNotPastDueMember2023-03-310000036270us-gaap:FairValueInputsLevel3Member2023-01-012023-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:CriticizedNonaccrualMembermtb:ResidentialBuilderAndDeveloperMember2023-03-310000036270us-gaap:FairValueInputsLevel2Memberus-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000036270mtb:CriticizedNonaccrualMembermtb:LongTermDebtTwoThousandTwentyOneMembermtb:ResidentialBuilderAndDeveloperMember2022-12-310000036270mtb:DiscretionaryPortfolioMember2022-12-310000036270mtb:CommercialFinancialLeasingMemberus-gaap:RevolvingCreditFacilityMember2023-01-012023-03-310000036270mtb:DiscretionaryPortfolioMember2023-03-310000036270mtb:HomeEquityLinesAndLoansMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyMemberus-gaap:AutomobileLoanMember2022-12-310000036270mtb:ForwardStartingInterestRateSwapAgreementsMember2023-03-310000036270mtb:OtherLoansMembermtb:RevolvingLoansConvertedToTermLoansMember2022-12-310000036270mtb:CriticizedAccrualMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270us-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:PaymentDeferralMember2023-01-012023-03-310000036270mtb:CommercialFinancialLeasingMember2023-01-012023-03-310000036270us-gaap:OperatingSegmentsMembermtb:CommercialBankingMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:ResidentialRealEstateExcludingAltAMember2023-01-012023-03-310000036270mtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310000036270mtb:NonPCDAcquiredLoansMember2022-04-012022-04-010000036270us-gaap:InterestRateContractMember2023-03-310000036270mtb:ResidentialLimitedDocumentationMemberus-gaap:PaymentDeferralMember2022-01-012022-03-310000036270us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2021-12-310000036270mtb:CommercialFinancialLeasingMembermtb:LongTermDebtTwoThousandNineteenMember2023-01-012023-03-310000036270us-gaap:SecuritiesInvestmentMember2022-01-012022-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-12-310000036270mtb:ResidentialRealEstateLoansMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2022-12-310000036270mtb:ClearinghouseCreditFacilitiesMember2023-03-310000036270mtb:LongTermDebtTwoThousandTwentyOneMemberus-gaap:PassMembermtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2023-03-310000036270mtb:CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember2022-03-310000036270mtb:LongTermDebtTwoThousandNineteenMembermtb:CriticizedNonaccrualMembermtb:OtherCommercialConstructionMember2023-03-310000036270us-gaap:AssetPledgedAsCollateralWithoutRightMemberus-gaap:FederalHomeLoanBankAdvancesMembermtb:OtherConsumerLoansMember2022-12-310000036270us-gaap:OperatingSegmentsMemberus-gaap:AllOtherSegmentsMember2023-01-012023-03-31xbrli:puremtb:Securityiso4217:USDxbrli:sharesxbrli:sharesiso4217:USDmtb:Modification
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-Q
☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended March 31, 2023
or
☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
Commission File Number 1-9861
M&T BANK CORPORATION
(Exact name of registrant as specified in its charter)
|
|
|
New York |
|
16-0968385 |
(State or other jurisdiction of incorporation or organization) |
|
(I.R.S. Employer Identification No.) |
|
|
|
One M & T Plaza Buffalo, New York |
|
14203 |
(Address of principal executive offices) |
|
(Zip Code) |
Registrant's telephone number, including area code:
(716) 635-4000
Securities registered pursuant to Section 12(b) of the Act:
|
|
|
Title of Each Class |
Trading Symbols |
Name of Each Exchange on Which Registered |
Common Stock, $.50 par value |
MTB |
New York Stock Exchange |
Perpetual Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series H |
MTBPrH |
New York Stock Exchange |
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. ☒ Yes ☐ No
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).
☒ Yes ☐ No
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
|
|
|
|
|
|
Large accelerated filer |
|
☒ |
|
Accelerated filer |
☐ |
Non-accelerated filer |
|
☐ |
|
Smaller reporting company |
☐ |
Emerging growth company |
|
☐ |
|
|
|
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). ☐ Yes ☒ No
Number of shares of the registrant's Common Stock, $0.50 par value, outstanding as of the close of business on May 1, 2023: 165,869,832 shares.
- 1 -
M&T BANK CORPORATION
FORM 10-Q
For the Quarterly Period Ended March 31, 2023
- 2 -
PART I. FINANCIAL INFORMATION
Item 1. Financial Statements.
M&T BANK CORPORATION AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEET (Unaudited)
|
|
|
|
|
|
|
|
|
|
|
March 31, |
|
|
December 31, |
|
(Dollars in thousands, except per share) |
|
2023 |
|
|
2022 |
|
Assets |
|
|
|
|
|
|
Cash and due from banks |
|
$ |
1,817,740 |
|
|
$ |
1,517,244 |
|
Interest-bearing deposits at banks |
|
|
22,306,425 |
|
|
|
24,958,719 |
|
Federal funds sold |
|
|
— |
|
|
|
3,000 |
|
Trading account |
|
|
165,216 |
|
|
|
117,847 |
|
Investment securities |
|
|
|
|
|
|
Available for sale (cost: $11,393,916 at March 31, 2023; $11,193,152 at December 31, 2022) |
|
|
11,038,922 |
|
|
|
10,748,961 |
|
Held to maturity (fair value: $15,204,461 at March 31, 2023; $12,375,420 at December 31, 2022) |
|
|
16,201,571 |
|
|
|
13,529,969 |
|
Equity and other securities (cost: $1,204,957 at March 31, 2023; $933,766 at December 31, 2022) |
|
|
1,202,716 |
|
|
|
931,941 |
|
Total investment securities |
|
|
28,443,209 |
|
|
|
25,210,871 |
|
Loans and leases |
|
|
133,531,052 |
|
|
|
132,074,156 |
|
Unearned discount |
|
|
(593,360 |
) |
|
|
(509,993 |
) |
Loans and leases, net of unearned discount |
|
|
132,937,692 |
|
|
|
131,564,163 |
|
Allowance for credit losses |
|
|
(1,975,110 |
) |
|
|
(1,925,331 |
) |
Loans and leases, net |
|
|
130,962,582 |
|
|
|
129,638,832 |
|
Premises and equipment |
|
|
1,664,021 |
|
|
|
1,653,628 |
|
Goodwill |
|
|
8,490,089 |
|
|
|
8,490,089 |
|
Core deposit and other intangible assets |
|
|
192,166 |
|
|
|
209,374 |
|
Accrued interest and other assets |
|
|
8,914,959 |
|
|
|
8,930,237 |
|
Total assets |
|
$ |
202,956,407 |
|
|
$ |
200,729,841 |
|
Liabilities |
|
|
|
|
|
|
Noninterest-bearing deposits |
|
$ |
59,955,033 |
|
|
$ |
65,501,860 |
|
Savings and interest-checking deposits |
|
|
86,282,685 |
|
|
|
87,911,463 |
|
Time deposits |
|
|
12,837,522 |
|
|
|
10,101,545 |
|
Total deposits |
|
|
159,075,240 |
|
|
|
163,514,868 |
|
Short-term borrowings |
|
|
6,995,302 |
|
|
|
3,554,951 |
|
Accrued interest and other liabilities |
|
|
4,045,804 |
|
|
|
4,377,495 |
|
Long-term borrowings |
|
|
7,462,890 |
|
|
|
3,964,537 |
|
Total liabilities |
|
|
177,579,236 |
|
|
|
175,411,851 |
|
Shareholders' equity |
|
|
|
|
|
|
Preferred stock, $1.00 par, 20,000,000 shares authorized; Issued and outstanding: Liquidation preference of $1,000 per share: 350,000 shares at March 31, 2023 and December 31, 2022; Liquidation preference of $10,000 per share: 140,000 shares at March 31, 2023 and December 31, 2022; Liquidation preference of $25 per share: 10,000,000 shares at March 31, 2023 and December 31, 2022 |
|
|
2,010,600 |
|
|
|
2,010,600 |
|
Common stock, $.50 par, 250,000,000 shares authorized, 179,436,779 shares issued at March 31, 2023 and December 31, 2022 |
|
|
89,718 |
|
|
|
89,718 |
|
Common stock issuable, 11,998 shares at March 31, 2023; 14,031 shares at December 31, 2022 |
|
|
957 |
|
|
|
1,112 |
|
Additional paid-in capital |
|
|
9,986,325 |
|
|
|
10,002,891 |
|
Retained earnings |
|
|
16,212,095 |
|
|
|
15,753,978 |
|
Accumulated other comprehensive income (loss), net |
|
|
(645,005 |
) |
|
|
(790,030 |
) |
Treasury stock — common, at cost — 13,583,874 shares at March 31, 2023; 10,165,419 shares at December 31, 2022 |
|
|
(2,277,519 |
) |
|
|
(1,750,279 |
) |
Total shareholders’ equity |
|
|
25,377,171 |
|
|
|
25,317,990 |
|
Total liabilities and shareholders’ equity |
|
$ |
202,956,407 |
|
|
$ |
200,729,841 |
|
See accompanying notes to financial statements.
- 3 -
M&T BANK CORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENT OF INCOME (Unaudited)
|
|
|
|
|
|
|
|
|
|
|
Three Months Ended March 31 |
|
(In thousands, except per share) |
|
2023 |
|
|
2022 |
|
Interest income |
|
|
|
|
|
|
Loans and leases, including fees |
|
$ |
1,849,656 |
|
|
$ |
870,600 |
|
Investment securities |
|
|
|
|
|
|
Fully taxable |
|
|
181,587 |
|
|
|
39,132 |
|
Exempt from federal taxes |
|
|
16,611 |
|
|
|
50 |
|
Deposits at banks |
|
|
278,417 |
|
|
|
18,280 |
|
Other |
|
|
714 |
|
|
|
194 |
|
Total interest income |
|
|
2,326,985 |
|
|
|
928,256 |
|
Interest expense |
|
|
|
|
|
|
Savings and interest-checking deposits |
|
|
277,068 |
|
|
|
6,747 |
|
Time deposits |
|
|
89,197 |
|
|
|
1,397 |
|
Short-term borrowings |
|
|
57,776 |
|
|
|
1 |
|
Long-term borrowings |
|
|
84,680 |
|
|
|
15,937 |
|
Total interest expense |
|
|
508,721 |
|
|
|
24,082 |
|
Net interest income |
|
|
1,818,264 |
|
|
|
904,174 |
|
Provision for credit losses |
|
|
120,000 |
|
|
|
10,000 |
|
Net interest income after provision for credit losses |
|
|
1,698,264 |
|
|
|
894,174 |
|
Other income |
|
|
|
|
|
|
Mortgage banking revenues |
|
|
84,985 |
|
|
|
109,148 |
|
Service charges on deposit accounts |
|
|
113,546 |
|
|
|
101,507 |
|
Trust income |
|
|
193,802 |
|
|
|
169,213 |
|
Brokerage services income |
|
|
24,041 |
|
|
|
20,190 |
|
Trading account and other non-hedging derivative gains |
|
|
11,675 |
|
|
|
5,369 |
|
Gain (loss) on bank investment securities |
|
|
(416 |
) |
|
|
(743 |
) |
Other revenues from operations |
|
|
159,500 |
|
|
|
136,203 |
|