3.22.0.1 html 761 976 1 false 175 0 false 16 false false R1.htm 100000 - Document - Document and Entity Information Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 100010 - Statement - Consolidated Balance Sheets Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_StatementConsolidatedBalanceSheets Consolidated Balance Sheets Statements 2 false false R3.htm 100040 - Statement - Consolidated Balance Sheets (Parenthetical) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_StatementConsolidatedBalanceSheetsParenthetical Consolidated Balance Sheets (Parenthetical) Statements 3 false false R4.htm 100050 - Statement - Consolidated Statements of Income Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_StatementConsolidatedStatementsOfIncome Consolidated Statements of Income Statements 4 false false R5.htm 100060 - Statement - Consolidated Statements of Comprehensive Income Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_StatementConsolidatedStatementsOfComprehensiveIncome Consolidated Statements of Comprehensive Income Statements 5 false false R6.htm 100070 - Statement - Consolidated Statements of Changes in Shareholders' Equity Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_StatementConsolidatedStatementsOfChangesInShareholdersEquity Consolidated Statements of Changes in Shareholders' Equity Statements 6 false false R7.htm 100080 - Statement - Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_StatementConsolidatedStatementsOfChangesInShareholdersEquityParenthetical Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) Statements 7 false false R8.htm 100090 - Statement - Consolidated Statements of Cash Flows Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_StatementConsolidatedStatementsOfCashFlows Consolidated Statements of Cash Flows Statements 8 false false R9.htm 100100 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 9 false false R10.htm 100110 - Disclosure - Mergers and Acquisitions Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureMergersAndAcquisitions Mergers and Acquisitions Notes 10 false false R11.htm 100120 - Disclosure - Earnings Per Common Share Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEarningsPerCommonShare Earnings Per Common Share Notes 11 false false R12.htm 100130 - Disclosure - Securities Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSecurities Securities Notes 12 false false R13.htm 100140 - Disclosure - Loans and the Allowance for Credit Losses Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureLoansAndAllowanceForCreditLosses Loans and the Allowance for Credit Losses Notes 13 false false R14.htm 100150 - Disclosure - Premises and Equipment Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosurePremisesAndEquipment Premises and Equipment Notes 14 false false R15.htm 100160 - Disclosure - Goodwill and Other Intangible Assets Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureGoodwillAndOtherIntangibleAssets Goodwill and Other Intangible Assets Notes 15 false false R16.htm 100170 - Disclosure - Investments in Limited Partnerships Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureInvestmentsInLimitedPartnerships Investments in Limited Partnerships Notes 16 false false R17.htm 100180 - Disclosure - Certificates of Deposit Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureCertificatesOfDeposit Certificates of Deposit Notes 17 false false R18.htm 100190 - Disclosure - FHLB and Other Short-Term Borrowings Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureFHLBAndOtherShortTermBorrowings FHLB and Other Short-Term Borrowings Notes 18 false false R19.htm 100200 - Disclosure - Subordinated Debt and Junior Subordinated Debt Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSubordinatedDebtAndJuniorSubordinatedDebt Subordinated Debt and Junior Subordinated Debt Notes 19 false false R20.htm 100210 - Disclosure - Derivatives and Hedging Activities Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureDerivativesAndHedgingActivities Derivatives and Hedging Activities Notes 20 false false R21.htm 100220 - Disclosure - Employee Benefit Plans Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEmployeeBenefitPlans Employee Benefit Plans Notes 21 false false R22.htm 100230 - Disclosure - Revenue Recognition Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureRevenueRecognition Revenue Recognition Notes 22 false false R23.htm 100240 - Disclosure - Other Operating Expenses Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureOtherOperatingExpenses Other Operating Expenses Notes 23 false false R24.htm 100250 - Disclosure - Income Taxes Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureIncomeTaxes Income Taxes Notes 24 false false R25.htm 100260 - Disclosure - Fair Value Measurement Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureFairValueMeasurement Fair Value Measurement Notes 25 false false R26.htm 100270 - Disclosure - Comprehensive Income/(Loss) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureComprehensiveIncomeLoss Comprehensive Income/(Loss) Notes 26 false false R27.htm 100280 - Disclosure - Commitments and Contingent Liabilities Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureCommitmentsAndContingentLiabilities Commitments and Contingent Liabilities Notes 27 false false R28.htm 100290 - Disclosure - Wesbanco Bank Community Development Corporation Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureWesbancoBankCommunityDevelopmentCorporation Wesbanco Bank Community Development Corporation Notes 28 false false R29.htm 100300 - Disclosure - Transactions with Related Parties Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureTransactionsWithRelatedParties Transactions with Related Parties Notes 29 false false R30.htm 100310 - Disclosure - Regulatory Matters Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureRegulatoryMatters Regulatory Matters Notes 30 false false R31.htm 100320 - Disclosure - Condensed Parent Company Financial Statements Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureCondensedParentCompanyFinancialStatements Condensed Parent Company Financial Statements Notes 31 false false R32.htm 100330 - Disclosure - Business Segments Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureBusinessSegments Business Segments Notes 32 false false R33.htm 100340 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPolicies 33 false false R34.htm 100350 - Disclosure - Mergers and Acquisitions (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureMergersAndAcquisitionsTables Mergers and Acquisitions (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureMergersAndAcquisitions 34 false false R35.htm 100360 - Disclosure - Earnings Per Common Share (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEarningsPerCommonShareTables Earnings Per Common Share (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEarningsPerCommonShare 35 false false R36.htm 100370 - Disclosure - Securities (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSecuritiesTables Securities (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSecurities 36 false false R37.htm 100380 - Disclosure - Loans and the Allowance for Credit Losses (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureLoansAndAllowanceForCreditLossesTables Loans and the Allowance for Credit Losses (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureLoansAndAllowanceForCreditLosses 37 false false R38.htm 100390 - Disclosure - Premises and Equipment (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosurePremisesAndEquipmentTables Premises and Equipment (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosurePremisesAndEquipment 38 false false R39.htm 100400 - Disclosure - Goodwill and Other Intangible Assets (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureGoodwillAndOtherIntangibleAssetsTables Goodwill and Other Intangible Assets (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureGoodwillAndOtherIntangibleAssets 39 false false R40.htm 100410 - Disclosure - Investments in Limited Partnerships (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/DisclosureInvestmentsInLimitedPartnershipsTables Investments in Limited Partnerships (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureInvestmentsInLimitedPartnerships 40 false false R41.htm 100420 - Disclosure - Certificates of Deposit (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureCertificatesOfDepositTables Certificates of Deposit (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureCertificatesOfDeposit 41 false false R42.htm 100430 - Disclosure - FHLB and Other Short-Term Borrowings (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureFHLBAndOtherShortTermBorrowingsTables FHLB and Other Short-Term Borrowings (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureFHLBAndOtherShortTermBorrowings 42 false false R43.htm 100440 - Disclosure - Subordinated Debt and Junior Subordinated Debt (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSubordinatedDebtAndJuniorSubordinatedDebtTables Subordinated Debt and Junior Subordinated Debt (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSubordinatedDebtAndJuniorSubordinatedDebt 43 false false R44.htm 100450 - Disclosure - Derivatives and Hedging Activities (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureDerivativesAndHedgingActivitiesTables Derivatives and Hedging Activities (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureDerivativesAndHedgingActivities 44 false false R45.htm 100460 - Disclosure - Employee Benefit Plans (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansTables Employee Benefit Plans (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEmployeeBenefitPlans 45 false false R46.htm 100470 - Disclosure - Revenue Recognition (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureRevenueRecognitionTables Revenue Recognition (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureRevenueRecognition 46 false false R47.htm 100480 - Disclosure - Other Operating Expenses (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureOtherOperatingExpensesTables Other Operating Expenses (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureOtherOperatingExpenses 47 false false R48.htm 100490 - Disclosure - Income Taxes (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureIncomeTaxesTables Income Taxes (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureIncomeTaxes 48 false false R49.htm 100500 - Disclosure - Fair Value Measurement (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureFairValueMeasurementTables Fair Value Measurement (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureFairValueMeasurement 49 false false R50.htm 100510 - Disclosure - Comprehensive Income/(Loss) (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureComprehensiveIncomeLossTables Comprehensive Income/(Loss) (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureComprehensiveIncomeLoss 50 false false R51.htm 100520 - Disclosure - Commitments and Contingent Liabilities (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureCommitmentsAndContingentLiabilitiesTables Commitments and Contingent Liabilities (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureCommitmentsAndContingentLiabilities 51 false false R52.htm 100530 - Disclosure - Wesbanco Bank Community Development Corporation (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureWesbancoBankCommunityDevelopmentCorporationTables Wesbanco Bank Community Development Corporation (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureWesbancoBankCommunityDevelopmentCorporation 52 false false R53.htm 100540 - Disclosure - Regulatory Matters (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureRegulatoryMattersTables Regulatory Matters (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureRegulatoryMatters 53 false false R54.htm 100550 - Disclosure - Condensed Parent Company Financial Statements (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureCondensedParentCompanyFinancialStatementsTables Condensed Parent Company Financial Statements (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureCondensedParentCompanyFinancialStatements 54 false false R55.htm 100560 - Disclosure - Business Segments (Tables) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureBusinessSegmentsTables Business Segments (Tables) Tables http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureBusinessSegments 55 false false R56.htm 100570 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationDetail Summary of Significant Accounting Policies - Additional Information (Detail) Details 56 false false R57.htm 100580 - Disclosure - Mergers and Acquisitions - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureMergersAndAcquisitionsAdditionalInformationDetail Mergers and Acquisitions - Additional Information (Detail) Details 57 false false R58.htm 100590 - Disclosure - Mergers and Acquisitions - Summary of Purchase Price of Acquisition and Resulting Goodwill (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureMergersAndAcquisitionsSummaryOfPurchasePriceOfAcquisitionAndResultingGoodwillDetail Mergers and Acquisitions - Summary of Purchase Price of Acquisition and Resulting Goodwill (Detail) Details 58 false false R59.htm 100600 - Disclosure - Mergers and Acquisitions - Allocation of Purchase Price of Assets Acquired and Liabilities Assumed (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureMergersAndAcquisitionsAllocationOfPurchasePriceOfAssetsAcquiredAndLiabilitiesAssumedDetail Mergers and Acquisitions - Allocation of Purchase Price of Assets Acquired and Liabilities Assumed (Detail) Details 59 false false R60.htm 100610 - Disclosure - Earnings Per Common Share - Summary of Earnings Per Common Share (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEarningsPerCommonShareSummaryOfEarningsPerCommonShareDetail Earnings Per Common Share - Summary of Earnings Per Common Share (Detail) Details 60 false false R61.htm 100620 - Disclosure - Earnings Per Common Share - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEarningsPerCommonShareAdditionalInformationDetail Earnings Per Common Share - Additional Information (Detail) Details 61 false false R62.htm 100630 - Disclosure - Securities - Schedule of Fair Value and Amortized Cost of Available-for-sale and Held-to-maturity Securities (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSecuritiesScheduleOfFairValueAndAmortizedCostOfAvailableForSaleAndHeldToMaturitySecuritiesDetail Securities - Schedule of Fair Value and Amortized Cost of Available-for-sale and Held-to-maturity Securities (Detail) Details 62 false false R63.htm 100640 - Disclosure - Securities - Schedule of Fair Value and Amortized Cost of Available-for-sale and Held-to-maturity Securities (Parenthetical) (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSecuritiesScheduleOfFairValueAndAmortizedCostOfAvailableForSaleAndHeldToMaturitySecuritiesParentheticalDetail Securities - Schedule of Fair Value and Amortized Cost of Available-for-sale and Held-to-maturity Securities (Parenthetical) (Detail) Details 63 false false R64.htm 100650 - Disclosure - Securities - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSecuritiesAdditionalInformationDetail Securities - Additional Information (Detail) Details 64 false false R65.htm 100660 - Disclosure - Securities - Schedule of Amortized Cost and Fair Value of Available-for-Sale and Held-to-Maturity Securities by Contractual Maturity (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSecuritiesScheduleOfAmortizedCostAndFairValueOfAvailableForSaleAndHeldToMaturitySecuritiesByContractualMaturityDetail Securities - Schedule of Amortized Cost and Fair Value of Available-for-Sale and Held-to-Maturity Securities by Contractual Maturity (Detail) Details 65 false false R66.htm 100670 - Disclosure - Securities - Schedule of Gross Realized Gains and Losses on the Sales and Calls of Securities as well as Gains and Losses on Equity Securities (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSecuritiesScheduleOfGrossRealizedGainsAndLossesOnSalesAndCallsOfSecuritiesAsWellAsGainsAndLossesOnEquitySecuritiesDetail Securities - Schedule of Gross Realized Gains and Losses on the Sales and Calls of Securities as well as Gains and Losses on Equity Securities (Detail) Details 66 false false R67.htm 100680 - Disclosure - Securities - Schedule of Allowance for Credit Losses on Held-to-maturity Securities (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSecuritiesScheduleOfAllowanceForCreditLossesOnHeldToMaturitySecuritiesDetail Securities - Schedule of Allowance for Credit Losses on Held-to-maturity Securities (Detail) Details 67 false false R68.htm 100690 - Disclosure - Securities - Schedule of Unrealized Losses on Investment Securities (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSecuritiesScheduleOfUnrealizedLossesOnInvestmentSecuritiesDetail Securities - Schedule of Unrealized Losses on Investment Securities (Detail) Details 68 false false R69.htm 100700 - Disclosure - Loans and the Allowance for Credit Losses - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureLoansAndAllowanceForCreditLossesAdditionalInformationDetail Loans and the Allowance for Credit Losses - Additional Information (Detail) Details 69 false false R70.htm 100710 - Disclosure - Loans and the Allowance for Credit Losses - Schedule of Recorded Investment in Loans by Category (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureLoansAndAllowanceForCreditLossesScheduleOfRecordedInvestmentInLoansByCategoryDetail Loans and the Allowance for Credit Losses - Schedule of Recorded Investment in Loans by Category (Detail) Details 70 false false R71.htm 100720 - Disclosure - Loans and the Allowance for Credit Losses - Summary of Changes in Allowance for Credit Losses (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureLoansAndAllowanceForCreditLossesSummaryOfChangesInAllowanceForCreditLossesDetail Loans and the Allowance for Credit Losses - Summary of Changes in Allowance for Credit Losses (Detail) Details 71 false false R72.htm 100730 - Disclosure - Loans and the Allowance for Credit Losses - Allowance for Credit Losses and Recorded Investments in Loans (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureLoansAndAllowanceForCreditLossesAllowanceForCreditLossesAndRecordedInvestmentsInLoansDetail Loans and the Allowance for Credit Losses - Allowance for Credit Losses and Recorded Investments in Loans (Detail) Details 72 false false R73.htm 100750 - Disclosure - Loans and the Allowance for Credit Losses - Summary of Commercial Loans by Risk Grade (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureLoansAndAllowanceForCreditLossesSummaryOfCommercialLoansByRiskGradeDetail Loans and the Allowance for Credit Losses - Summary of Commercial Loans by Risk Grade (Detail) Details 73 false false R74.htm 100760 - Disclosure - Loans and the Allowance for Credit Losses - Summary of Age Analysis of Loan Categories (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureLoansAndAllowanceForCreditLossesSummaryOfAgeAnalysisOfLoanCategoriesDetail Loans and the Allowance for Credit Losses - Summary of Age Analysis of Loan Categories (Detail) Details 74 false false R75.htm 100770 - Disclosure - Loans and the Allowance for Credit Losses - Summary of Age Analysis of Loan Categories (Parenthetical) (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureLoansAndAllowanceForCreditLossesSummaryOfAgeAnalysisOfLoanCategoriesParentheticalDetail Loans and the Allowance for Credit Losses - Summary of Age Analysis of Loan Categories (Parenthetical) (Detail) Details 75 false false R76.htm 100780 - Disclosure - Loans and the Allowance for Credit Losses - Summary of Nonperforming Loans (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureLoansAndAllowanceForCreditLossesSummaryOfNonperformingLoansDetail Loans and the Allowance for Credit Losses - Summary of Nonperforming Loans (Detail) Details 76 false false R77.htm 100790 - Disclosure - Loans and the Allowance for Credit Losses - Recorded Investment in Non-Accrual Loans and TDRs (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureLoansAndAllowanceForCreditLossesRecordedInvestmentInNonAccrualLoansAndTdrsDetail Loans and the Allowance for Credit Losses - Recorded Investment in Non-Accrual Loans and TDRs (Detail) Details 77 false false R78.htm 100800 - Disclosure - Loans and the Allowance for Credit Losses - Recorded Investment in Non-Accrual Loans and TDRs (Parenthetical) (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureLoansAndAllowanceForCreditLossesRecordedInvestmentInNonAccrualLoansAndTdrsParentheticalDetail Loans and the Allowance for Credit Losses - Recorded Investment in Non-Accrual Loans and TDRs (Parenthetical) (Detail) Details 78 false false R79.htm 100810 - Disclosure - Loans and the Allowance for Credit Losses - Loans Identified as TDRs (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureLoansAndAllowanceForCreditLossesLoansIdentifiedAsTdrsDetail Loans and the Allowance for Credit Losses - Loans Identified as TDRs (Detail) Details 79 false false R80.htm 100820 - Disclosure - Loans and the Allowance for Credit Losses - TDRs Defaulted Later Restructured (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureLoansAndAllowanceForCreditLossesTdrsDefaultedLaterRestructuredDetail Loans and the Allowance for Credit Losses - TDRs Defaulted Later Restructured (Detail) Details 80 false false R81.htm 100830 - Disclosure - Loans and the Allowance for Credit Losses - Recognition of Interest Income on Nonperforming Loans (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureLoansAndAllowanceForCreditLossesRecognitionOfInterestIncomeOnNonperformingLoansDetail Loans and the Allowance for Credit Losses - Recognition of Interest Income on Nonperforming Loans (Detail) Details 81 false false R82.htm 100840 - Disclosure - Loans and the Allowance for Credit Losses - Summary of Amortized Cost Basis Loan Balances by Year of Origination and Credit Quality Indicator (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureLoansAndAllowanceForCreditLossesSummaryOfAmortizedCostBasisLoanBalancesByYearOfOriginationAndCreditQualityIndicatorDetail Loans and the Allowance for Credit Losses - Summary of Amortized Cost Basis Loan Balances by Year of Origination and Credit Quality Indicator (Detail) Details 82 false false R83.htm 100850 - Disclosure - Loans and the Allowance for Credit Losses - Summary of Other Real Estate Owned and Repossessed Assets (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureLoansAndAllowanceForCreditLossesSummaryOfOtherRealEstateOwnedAndRepossessedAssetsDetail Loans and the Allowance for Credit Losses - Summary of Other Real Estate Owned and Repossessed Assets (Detail) Details 83 false false R84.htm 100860 - Disclosure - Premises and Equipment - Schedule of Premises and Equipment (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosurePremisesAndEquipmentScheduleOfPremisesAndEquipmentDetail Premises and Equipment - Schedule of Premises and Equipment (Detail) Details 84 false false R85.htm 100870 - Disclosure - Premises and Equipment - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosurePremisesAndEquipmentAdditionalInformationDetail Premises and Equipment - Additional Information (Detail) Details 85 false false R86.htm 100880 - Disclosure - Premises and Equipment - Future Minimum Lease Payments Under Non-cancellable Leases (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosurePremisesAndEquipmentFutureMinimumLeasePaymentsUnderNonCancellableLeasesDetail Premises and Equipment - Future Minimum Lease Payments Under Non-cancellable Leases (Detail) Details 86 false false R87.htm 100890 - Disclosure - Goodwill and Other Intangible Assets - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureGoodwillAndOtherIntangibleAssetsAdditionalInformationDetail Goodwill and Other Intangible Assets - Additional Information (Detail) Details 87 false false R88.htm 100900 - Disclosure - Goodwill and Other Intangible Assets - Wesbanco's Capitalized Other Intangible Assets and Related Accumulated Amortization (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureGoodwillAndOtherIntangibleAssetsWesbancoSCapitalizedOtherIntangibleAssetsAndRelatedAccumulatedAmortizationDetail Goodwill and Other Intangible Assets - Wesbanco's Capitalized Other Intangible Assets and Related Accumulated Amortization (Detail) Details 88 false false R89.htm 100910 - Disclosure - Goodwill and Other Intangible Assets - Schedule of Future Amortization on Intangible Assets (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureGoodwillAndOtherIntangibleAssetsScheduleOfFutureAmortizationOnIntangibleAssetsDetail Goodwill and Other Intangible Assets - Schedule of Future Amortization on Intangible Assets (Detail) Details 89 false false R90.htm 100930 - Disclosure - Investments in Limited Partnerships - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureInvestmentsInLimitedPartnershipsAdditionalInformationDetail Investments in Limited Partnerships - Additional Information (Detail) Details 90 false false R91.htm 100940 - Disclosure - Investments in Limited Partnerships - Schedule of Equity Commitments (Details) Sheet http://www.wesbanco.com/20211231/taxonomy/role/DisclosureInvestmentsInLimitedPartnershipsScheduleOfEquityCommitmentsDetails Investments in Limited Partnerships - Schedule of Equity Commitments (Details) Details 91 false false R92.htm 100950 - Disclosure - Certificates of Deposit - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureCertificatesOfDepositAdditionalInformationDetail Certificates of Deposit - Additional Information (Detail) Details 92 false false R93.htm 100960 - Disclosure - Certificates of Deposit - Schedule of Maturities of Total Certificates of Deposit (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureCertificatesOfDepositScheduleOfMaturitiesOfTotalCertificatesOfDepositDetail Certificates of Deposit - Schedule of Maturities of Total Certificates of Deposit (Detail) Details 93 false false R94.htm 100970 - Disclosure - FHLB and Other Short-Term Borrowings - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureFHLBAndOtherShortTermBorrowingsAdditionalInformationDetail FHLB and Other Short-Term Borrowings - Additional Information (Detail) Details 94 false false R95.htm 100980 - Disclosure - FHLB and Other Short-Term Borrowings - Schedule of Aggregate Annual Maturities and Weighted-Average Interest Rates of FHLB Borrowing (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureFHLBAndOtherShortTermBorrowingsScheduleOfAggregateAnnualMaturitiesAndWeightedAverageInterestRatesOfFHLBBorrowingDetail FHLB and Other Short-Term Borrowings - Schedule of Aggregate Annual Maturities and Weighted-Average Interest Rates of FHLB Borrowing (Detail) Details 95 false false R96.htm 100990 - Disclosure - Subordinated Debt and Junior Subordinated Debt - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSubordinatedDebtAndJuniorSubordinatedDebtAdditionalInformationDetail Subordinated Debt and Junior Subordinated Debt - Additional Information (Detail) Details 96 false false R97.htm 101000 - Disclosure - Subordinated Debt and Junior Subordinated Debt - Schedule of Junior Subordinated Debt by Trusts (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSubordinatedDebtAndJuniorSubordinatedDebtScheduleOfJuniorSubordinatedDebtByTrustsDetail Subordinated Debt and Junior Subordinated Debt - Schedule of Junior Subordinated Debt by Trusts (Detail) Details 97 false false R98.htm 101010 - Disclosure - Subordinated Debt and Junior Subordinated Debt - Schedule of Junior Subordinated Debt by Trusts (Parenthetical) (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureSubordinatedDebtAndJuniorSubordinatedDebtScheduleOfJuniorSubordinatedDebtByTrustsParentheticalDetail Subordinated Debt and Junior Subordinated Debt - Schedule of Junior Subordinated Debt by Trusts (Parenthetical) (Detail) Details 98 false false R99.htm 101020 - Disclosure - Derivatives and Hedging Activities - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureDerivativesAndHedgingActivitiesAdditionalInformationDetail Derivatives and Hedging Activities - Additional Information (Detail) Details 99 false false R100.htm 101030 - Disclosure - Derivatives and Hedging Activities - Summary of Fair Values of Derivative Instruments on Balance Sheets (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureDerivativesAndHedgingActivitiesSummaryOfFairValuesOfDerivativeInstrumentsOnBalanceSheetsDetail Derivatives and Hedging Activities - Summary of Fair Values of Derivative Instruments on Balance Sheets (Detail) Details 100 false false R101.htm 101040 - Disclosure - Derivatives and Hedging Activities - Summary of Effect of Derivative Instruments on Income Statement (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureDerivativesAndHedgingActivitiesSummaryOfEffectOfDerivativeInstrumentsOnIncomeStatementDetail Derivatives and Hedging Activities - Summary of Effect of Derivative Instruments on Income Statement (Detail) Details 101 false false R102.htm 101050 - Disclosure - Employee Benefit Plans - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansAdditionalInformationDetail Employee Benefit Plans - Additional Information (Detail) Details 102 false false R103.htm 101060 - Disclosure - Employee Benefit Plans - Summary of Benefit Obligations and Funded Status of the Plan (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansSummaryOfBenefitObligationsAndFundedStatusOfPlanDetail Employee Benefit Plans - Summary of Benefit Obligations and Funded Status of the Plan (Detail) Details 103 false false R104.htm 101070 - Disclosure - Employee Benefit Plans - Components of and Weighted-Average Assumptions Used in Determining Net Periodic Benefit Costs (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansComponentsOfAndWeightedAverageAssumptionsUsedInDeterminingNetPeriodicBenefitCostsDetail Employee Benefit Plans - Components of and Weighted-Average Assumptions Used in Determining Net Periodic Benefit Costs (Detail) Details 104 false false R105.htm 101080 - Disclosure - Employee Benefit Plans - Summary of Weighted-Average Asset Allocations by Asset Category (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansSummaryOfWeightedAverageAssetAllocationsByAssetCategoryDetail Employee Benefit Plans - Summary of Weighted-Average Asset Allocations by Asset Category (Detail) Details 105 false false R106.htm 101090 - Disclosure - Employee Benefit Plans - Fair Values of the Wesbanco's Pension Plan Assets (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansFairValuesOfWesbancoSPensionPlanAssetsDetail Employee Benefit Plans - Fair Values of the Wesbanco's Pension Plan Assets (Detail) Details 106 false false R107.htm 101100 - Disclosure - Employee Benefit Plans - Fair Values of the Wesbanco's Pension Plan Assets (Parenthetical) (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansFairValuesOfWesbancoSPensionPlanAssetsParentheticalDetail Employee Benefit Plans - Fair Values of the Wesbanco's Pension Plan Assets (Parenthetical) (Detail) Details 107 false false R108.htm 101110 - Disclosure - Employee Benefit Plans - Estimated Benefits to be Paid in Each of Next Five Years and in the Aggregate for the Five Years Thereafter (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansEstimatedBenefitsToBePaidInEachOfNextFiveYearsAndInAggregateForFiveYearsThereafterDetail Employee Benefit Plans - Estimated Benefits to be Paid in Each of Next Five Years and in the Aggregate for the Five Years Thereafter (Detail) Details 108 false false R109.htm 101120 - Disclosure - Employee Benefit Plans - Significant Assumptions Used in Calculating the Fair Value of the Grants (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansSignificantAssumptionsUsedInCalculatingFairValueOfGrantsDetail Employee Benefit Plans - Significant Assumptions Used in Calculating the Fair Value of the Grants (Detail) Details 109 false false R110.htm 101130 - Disclosure - Employee Benefit Plans - Summary of Activity for the Stock Option Component of the Incentive Plan (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansSummaryOfActivityForStockOptionComponentOfIncentivePlanDetail Employee Benefit Plans - Summary of Activity for the Stock Option Component of the Incentive Plan (Detail) Details 110 false false R111.htm 101140 - Disclosure - Employee Benefit Plans - Summary of Average Remaining Life of the Stock Options (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansSummaryOfAverageRemainingLifeOfStockOptionsDetail Employee Benefit Plans - Summary of Average Remaining Life of the Stock Options (Detail) Details 111 false false R112.htm 101150 - Disclosure - Employee Benefit Plans - Schedule of Activity for the Restricted Stock Component of the Plan (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansScheduleOfActivityForRestrictedStockComponentOfPlanDetail Employee Benefit Plans - Schedule of Activity for the Restricted Stock Component of the Plan (Detail) Details 112 false false R113.htm 101160 - Disclosure - Revenue Recognition - Summary of Revenue Recognition (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureRevenueRecognitionSummaryOfRevenueRecognitionDetail Revenue Recognition - Summary of Revenue Recognition (Detail) Details 113 false false R114.htm 101170 - Disclosure - Revenue Recognition - Summary of Revenue Recognition (Parenthetical) (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/DisclosureRevenueRecognitionSummaryOfRevenueRecognitionParentheticalDetail Revenue Recognition - Summary of Revenue Recognition (Parenthetical) (Detail) Details 114 false false R115.htm 101180 - Disclosure - Other Operating Expenses - Schedule of Other Operating Expenses (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureOtherOperatingExpensesScheduleOfOtherOperatingExpensesDetail Other Operating Expenses - Schedule of Other Operating Expenses (Detail) Details 115 false false R116.htm 101190 - Disclosure - Income Taxes - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureIncomeTaxesAdditionalInformationDetail Income Taxes - Additional Information (Detail) Details 116 false false R117.htm 101200 - Disclosure - Income Taxes - Reconciliation from Federal Statutory Income Tax Rate to Effective Tax Rate (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureIncomeTaxesReconciliationFromFederalStatutoryIncomeTaxRateToEffectiveTaxRateDetail Income Taxes - Reconciliation from Federal Statutory Income Tax Rate to Effective Tax Rate (Detail) Details 117 false false R118.htm 101210 - Disclosure - Income Taxes - Provision for Income Taxes Applicable to Income Before Taxes (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureIncomeTaxesProvisionForIncomeTaxesApplicableToIncomeBeforeTaxesDetail Income Taxes - Provision for Income Taxes Applicable to Income Before Taxes (Detail) Details 118 false false R119.htm 101220 - Disclosure - Income Taxes - Schedule of Income Tax Amounts were Recorded in Shareholder's Equity as Elements of Other Comprehensive Income (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureIncomeTaxesScheduleOfIncomeTaxAmountsWereRecordedInShareholderSEquityAsElementsOfOtherComprehensiveIncomeDetail Income Taxes - Schedule of Income Tax Amounts were Recorded in Shareholder's Equity as Elements of Other Comprehensive Income (Detail) Details 119 false false R120.htm 101230 - Disclosure - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureIncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetail Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) Details 120 false false R121.htm 101240 - Disclosure - Income Taxes - Schedule of Unrecognized Tax Benefits (Excluding Interest and Federal Income Tax Benefit of Unrecognized State Tax Benefits) (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureIncomeTaxesScheduleOfUnrecognizedTaxBenefitsExcludingInterestAndFederalIncomeTaxBenefitOfUnrecognizedStateTaxBenefitsDetail Income Taxes - Schedule of Unrecognized Tax Benefits (Excluding Interest and Federal Income Tax Benefit of Unrecognized State Tax Benefits) (Detail) Details 121 false false R122.htm 101250 - Disclosure - Fair Value Measurement - Schedule of Fair Value of Assets and Liabilities Measured on Recurring and Nonrecurring Basis (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureFairValueMeasurementScheduleOfFairValueOfAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisDetail Fair Value Measurement - Schedule of Fair Value of Assets and Liabilities Measured on Recurring and Nonrecurring Basis (Detail) Details 122 false false R123.htm 101260 - Disclosure - Fair Value Measurement - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureFairValueMeasurementAdditionalInformationDetail Fair Value Measurement - Additional Information (Detail) Details 123 false false R124.htm 101270 - Disclosure - Fair Value Measurement - Schedule of Assets Measured at Fair Value on Nonrecurring Basis (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureFairValueMeasurementScheduleOfAssetsMeasuredAtFairValueOnNonrecurringBasisDetail Fair Value Measurement - Schedule of Assets Measured at Fair Value on Nonrecurring Basis (Detail) Details 124 false false R125.htm 101280 - Disclosure - Fair Value Measurement - Estimates Fair Value of Financial Instruments (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureFairValueMeasurementEstimatesFairValueOfFinancialInstrumentsDetail Fair Value Measurement - Estimates Fair Value of Financial Instruments (Detail) Details 125 false false R126.htm 101290 - Disclosure - Comprehensive Income/(Loss) - Components of Accumulated Other Comprehensive Income (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeDetail Comprehensive Income/(Loss) - Components of Accumulated Other Comprehensive Income (Detail) Details 126 false false R127.htm 101300 - Disclosure - Comprehensive Income/(Loss) - Components of Accumulated Other Comprehensive Income (Parenthetical) (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeParentheticalDetail Comprehensive Income/(Loss) - Components of Accumulated Other Comprehensive Income (Parenthetical) (Detail) Details 127 false false R128.htm 101310 - Disclosure - Comprehensive Income/(Loss) - Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income/(Loss) (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureComprehensiveIncomeLossScheduleOfAmountsReclassifiedFromAccumulatedOtherComprehensiveIncomeLossDetail Comprehensive Income/(Loss) - Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income/(Loss) (Detail) Details 128 false false R129.htm 101320 - Disclosure - Commitments and Contingent Liabilities - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureCommitmentsAndContingentLiabilitiesAdditionalInformationDetail Commitments and Contingent Liabilities - Additional Information (Detail) Details 129 false false R130.htm 101330 - Disclosure - Commitments and Contingent Liabilities - Commitments to Extend Credit, Guarantees and Various Letters of Credit Outstanding (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureCommitmentsAndContingentLiabilitiesCommitmentsToExtendCreditGuaranteesAndVariousLettersOfCreditOutstandingDetail Commitments and Contingent Liabilities - Commitments to Extend Credit, Guarantees and Various Letters of Credit Outstanding (Detail) Details 130 false false R131.htm 101340 - Disclosure - Wesbanco Bank Community Development Corporation - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureWesbancoBankCommunityDevelopmentCorporationAdditionalInformationDetail Wesbanco Bank Community Development Corporation - Additional Information (Detail) Details 131 false false R132.htm 101350 - Disclosure - Wesbanco Bank Community Development Corporation - Schedule of Condensed Balance Sheet (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureWesbancoBankCommunityDevelopmentCorporationScheduleOfCondensedBalanceSheetDetail Wesbanco Bank Community Development Corporation - Schedule of Condensed Balance Sheet (Detail) Details 132 false false R133.htm 101360 - Disclosure - Wesbanco Bank Community Development Corporation - Schedule of Condensed Balance Sheet (Parenthetical) (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureWesbancoBankCommunityDevelopmentCorporationScheduleOfCondensedBalanceSheetParentheticalDetail Wesbanco Bank Community Development Corporation - Schedule of Condensed Balance Sheet (Parenthetical) (Detail) Details 133 false false R134.htm 101370 - Disclosure - Wesbanco Bank Community Development Corporation - Schedule of Condensed Income Statement (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureWesbancoBankCommunityDevelopmentCorporationScheduleOfCondensedIncomeStatementDetail Wesbanco Bank Community Development Corporation - Schedule of Condensed Income Statement (Detail) Details 134 false false R135.htm 101380 - Disclosure - Wesbanco Bank Community Development Corporation - Schedule of Condensed Cash Flow Statement (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureWesbancoBankCommunityDevelopmentCorporationScheduleOfCondensedCashFlowStatementDetail Wesbanco Bank Community Development Corporation - Schedule of Condensed Cash Flow Statement (Detail) Details 135 false false R136.htm 101390 - Disclosure - Transactions with Related Parties - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureTransactionsWithRelatedPartiesAdditionalInformationDetail Transactions with Related Parties - Additional Information (Detail) Details 136 false false R137.htm 101400 - Disclosure - Regulatory Matters - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureRegulatoryMattersAdditionalInformationDetail Regulatory Matters - Additional Information (Detail) Details 137 false false R138.htm 101410 - Disclosure - Regulatory Matters - Summary of Risk-Based Capital Amounts and Ratios (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureRegulatoryMattersSummaryOfRiskBasedCapitalAmountsAndRatiosDetail Regulatory Matters - Summary of Risk-Based Capital Amounts and Ratios (Detail) Details 138 false false R139.htm 101420 - Disclosure - Condensed Parent Company Financial Statements - Schedule of Condensed Balance Sheet (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureCondensedParentCompanyFinancialStatementsScheduleOfCondensedBalanceSheetDetail Condensed Parent Company Financial Statements - Schedule of Condensed Balance Sheet (Detail) Details 139 false false R140.htm 101430 - Disclosure - Condensed Parent Company Financial Statements - Schedule of Condensed Income Statement (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureCondensedParentCompanyFinancialStatementsScheduleOfCondensedIncomeStatementDetail Condensed Parent Company Financial Statements - Schedule of Condensed Income Statement (Detail) Details 140 false false R141.htm 101440 - Disclosure - Condensed Parent Company Financial Statements - Schedule of Condensed Cash Flow Statement (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureCondensedParentCompanyFinancialStatementsScheduleOfCondensedCashFlowStatementDetail Condensed Parent Company Financial Statements - Schedule of Condensed Cash Flow Statement (Detail) Details 141 false false R142.htm 101450 - Disclosure - Business Segments - Additional Information (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureBusinessSegmentsAdditionalInformationDetail Business Segments - Additional Information (Detail) Details 142 false false R143.htm 101460 - Disclosure - Business Segments - Financial Information by Business Segment (Detail) Sheet http://www.wesbanco.com/20211231/taxonomy/role/Role_DisclosureBusinessSegmentsFinancialInformationByBusinessSegmentDetail Business Segments - Financial Information by Business Segment (Detail) Details 143 false false All Reports Book All Reports wsbc-20211231.htm wsbc-20211231.xsd wsbc-20211231_cal.xml wsbc-20211231_def.xml wsbc-20211231_lab.xml wsbc-20211231_pre.xml wsbc-ex21.htm wsbc-ex23.htm wsbc-ex24.htm wsbc-ex31_1.htm wsbc-ex31_2.htm wsbc-ex32_1.htm img150058604_0.jpg http://fasb.org/srt/2021-01-31 http://fasb.org/us-gaap/2021-01-31 http://xbrl.sec.gov/dei/2021q4 true true