XML 92 R73.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Loans and leases and allowance for credit losses - Additional Information (Detail) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Apr. 01, 2022 | Dec. 31, 2024 | Dec. 31, 2023
Loans And Leases Receivable [Line Items] |  |  |
Unamortized loan cost (fee) and purchase premium (discount) |  | $ 277 | $ 361
ACL for non-PCD loan and leases | $ 242 |  |
Modified in period |  | 1,130 | 1,586
Loans and leases |  | $ 135,581 | 134,068
Maximum |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Loan delinquent period |  | 150 days |
Term Extension |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Modified in period |  | $ 1,001 | 1,476
Director and Certain Officers |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Borrowing by directors and certain officers of M&T and its banking subsidiaries and their associates |  | 50 | 116
New borrowings by directors, certain officers and their associates |  | 1 |
Repayments and other reductions of borrowings by directors, certain officers and their associates |  | 66 |
Guaranteed by Government-Related Entities |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Modified in period |  | 143 | 124
30-89 Days Past Due |  | 34 | 40
Past Due 90 Days or More |  | $ 36 | 24
Percentage loans in the process of foreclosure, serviced by other entities, classified as government guaranteed |  | 37.00% |
Unfunded Commitments to Extend Credit |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Modified in period |  | $ 69 | $ 128
Non PCD Acquired Loans |  |  |
Loans And Leases Receivable [Line Items] |  |  |
ACL for non-PCD loan and leases | 242 |  |
PCD Acquired Loans |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Allowance for credit loss, write-off | $ 33 |  |
Commercial Loans and Commercial Real Estate | Minimum |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Amount of real estate loan as reported as accruing or non-accruing |  | $ 5 |
Commercial Real Estate |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Weighted-average remaining term |  | 1 year | 1 year 1 month 6 days
Commercial Real Estate | Asset Pledged as Collateral without Right | FHLBs Facility |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Pledged financial instruments |  | $ 14,600 |
Commercial Real Estate | Commercial |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Mortgage loans held for sale |  | 310 | $ 189
Modified in period |  | 515 | 651
Loans and leases |  | 20,780 | 25,277
Commercial Real Estate | Commercial | Term Extension |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Modified in period |  | $ 509 | $ 610
Residential Real Estate |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Weighted-average remaining term |  | 10 years 4 months 24 days | 10 years 7 months 6 days
Residential Real Estate | Asset Pledged as Collateral without Right | FHLBs Facility |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Pledged financial instruments |  | $ 18,600 |
Residential Real Estate | Residential Real Estate Loans |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Amount of foreclosed residential real estate property held |  | 35 | $ 39
Loans secured by residential real estate that were in the process of foreclosure |  | 173 | 170
Residential Real Estate | Residential |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Mortgage loans held for sale |  | 211 | 190
Modified in period |  | 177 | 177
Loans and leases |  | 23,166 | 23,264
Residential Real Estate | Residential | Term Extension |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Modified in period |  | 146 | 148
Commercial Portfolio Segment |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Modified in period |  | $ 303 | $ 198
Weighted-average remaining term |  | 10 months 24 days | 1 year 3 months 18 days
Loans and leases |  | $ 61,481 | $ 57,010
Commercial Portfolio Segment | Term Extension |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Modified in period |  | 212 | 169
Commercial Portfolio Segment | Asset Pledged as Collateral without Right | FHLBs Facility |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Pledged financial instruments |  | 20,700 |
Consumer: | Other |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Modified in period |  | 0 | 0
Loans and leases |  | 2,220 | 2,092
Consumer: | Other | Term Extension |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Modified in period |  | 0 | 0
Consumer: | Other | Asset Pledged as Collateral without Right | FHLBs Facility |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Pledged financial instruments |  | 13,100 |
Consumer: | Home equity lines and loans |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Modified in period |  | 2 | 1
Loans and leases |  | 4,592 | 4,649
Consumer: | Home equity lines and loans | Term Extension |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Modified in period |  | 1 | 0
Consumer: | Home equity lines and loans | Asset Pledged as Collateral without Right | FHLBs Facility |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Pledged financial instruments |  | 2,700 |
Consumer: | Automobile |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Modified in period |  | 0 | 0
Loans and leases |  | 4,794 | 3,992
Consumer: | Automobile | Term Extension |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Modified in period |  | 0 | $ 0
Consumer: | Equipment Finance Loans And Leases |  |  |
Loans And Leases Receivable [Line Items] |  |  |
Loans and leases |  | $ 1,500 |

X
- Definition ACL For Non Purchased Credit Deteriorated Loan And Leases + References No definition available. + Details
Name: | mtb_ACLForNonPurchasedCreditDeterioratedLoanAndLeases
Namespace Prefix: | mtb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Delinquency Status Of Loans And Leases Receivable Modified Past Due Ninety Days Or More + References No definition available. + Details
Name: | mtb_DelinquencyStatusOfLoansAndLeasesReceivableModifiedPastDueNinetyDaysOrMore
Namespace Prefix: | mtb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Delinquency Status Of Loans And Leases Receivable Modified Past Due Thirty To Eighty Nine Days + References No definition available. + Details
Name: | mtb_DelinquencyStatusOfLoansAndLeasesReceivableModifiedPastDueThirtyToEightyNineDays
Namespace Prefix: | mtb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Financing Receivable Recorded Investment Accrual Or Nonaccrual Status + References No definition available. + Details
Name: | mtb_FinancingReceivableRecordedInvestmentAccrualOrNonaccrualStatus
Namespace Prefix: | mtb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Loan Delinquent Period For Nonaccrual Status Classification + References No definition available. + Details
Name: | mtb_LoanDelinquentPeriodForNonaccrualStatusClassification
Namespace Prefix: | mtb_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition LoansAndLeasesReceivableLineItems + References No definition available. + Details
Name: | mtb_LoansAndLeasesReceivableLineItems
Namespace Prefix: | mtb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loans And Leases Weighted Average Remaining Term + References No definition available. + Details
Name: | mtb_LoansAndLeasesWeightedAverageRemainingTerm
Namespace Prefix: | mtb_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition PercentageOfLoansInTheProcessOfForeclosureServicedByOtherEntitiesClassifiedAsGovernmentGuaranteed + References No definition available. + Details
Name: | mtb_PercentageOfLoansInTheProcessOfForeclosureServicedByOtherEntitiesClassifiedAsGovernmentGuaranteed
Namespace Prefix: | mtb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Residential Mortgage Loans Secured By Residential Real Estate In Process Of Foreclosure + References No definition available. + Details
Name: | mtb_ResidentialMortgageLoansSecuredByResidentialRealEstateInProcessOfForeclosure
Namespace Prefix: | mtb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestModifiedPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of unamortized loan commitment, origination, and other costs (fees) and purchase premium (discount) on financing receivable recognized as adjustment to yield. Excludes financing receivable covered under loss sharing agreement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481598/310-20-45-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-4 Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 3 -SubTopic 20 -Topic 310 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481569/310-20-50-3 + Details
Name: | us-gaap_FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(e)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483326/850-10-50-1 + Details
Name: | us-gaap_LoansAndLeasesReceivableRelatedParties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reflects the amount of new advances made to related parties in the form of loan and lease receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(e)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483326/850-10-50-1 + Details
Name: | us-gaap_LoansAndLeasesReceivableRelatedPartiesAdditions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cash inflow from related parties which reduce the amount of loans and leases receivable due from related parties. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 12 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-12 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(e)(1)(i)) -SubTopic 210 -Topic 942 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 + Details
Name: | us-gaap_LoansAndLeasesReceivableRelatedPartiesProceeds
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, after valuation allowance, of financing receivable held for sale and not part of disposal group. Excludes loan covered under loss sharing agreement and loan classified as investment in debt security. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 948 -SubTopic 310 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477011/948-310-45-1 + Details
Name: | us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(5)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_NotesReceivableNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying amount as of the balance sheet date of other real estate and foreclosed assets. Other real estate may include real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. Foreclosed assets include all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 + Details
Name: | us-gaap_OtherRealEstateAndForeclosedAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=us-gaap_PaymentDeferralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=mtb_DirectorAndCertainOfficersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesAxis=us-gaap_LoansInsuredOrGuaranteedByUsGovernmentAuthoritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_UnfundedLoanCommitmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mtb_NonPCDAcquiredLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mtb_PCDAcquiredLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mtb_CommercialLoansAndCommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PledgedStatusAxis=us-gaap_AssetPledgedAsCollateralWithoutRightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PledgingPurposeAxis=us-gaap_FederalHomeLoanBankAdvancesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mtb_CommercialRealEstateExcludingResidentialBuilderAndDeveloperAndOtherConstructionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mtb_ResidentialRealEstateLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mtb_ResidentialRealEstateExcludingAltAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mtb_HomeEquityLinesAndLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_AutomobileLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mtb_EquipmentFinanceLoansAndLeasesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |