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US government US Government Debt Securities [Member] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Schedule of Off-Balance Sheet Credit Risk Information Schedule of Fair Value, off-Balance-Sheet Risks [Table Text Block] BORROWINGS Debt Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Operating cash flows from operating leases Operating Lease, Payments Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Held to maturity, due after ten years, amortized cost Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 10 90 Days past due and still accruing Financing Receivable, 90 Days or More Past Due, Still Accruing COMMITMENTS, CREDIT RISK AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Diluted weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] SBA-Guaranteed Loan Servicing Small Business Administration Loans [Member] Small business administration loans. Weighted average remaining life (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms Derivative [Table] Derivative [Table] Total impact on provision for income taxes Investment Program, Proportional Amortization Method, Elected, Equity Method Investment, Income (Loss) from Tax Credit Investment Entity Small Business Entity Small Business Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Amortized Cost Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity [Abstract] State taxes Current State and Local Tax Expense (Benefit) Document Transition Report Document Transition Report 37 - 48 months Operating and Finance Lease, Liability, to be Paid, Rolling Year Four Operating and Finance Lease, Liability, to be Paid, Rolling Year Four Available for sale, due after one year but within five years, fair value Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Loans modified, pooled reserves Financing Receivable, Modified, Allowance For Credit Loss, Pooled Reserves Financing Receivable, Modified, Allowance For Credit Loss, Pooled Reserves Total lease payments Finance Lease, Liability, to be Paid Underlying Securities Award Underlying Securities Amount Mortgage Servicing Rights Mortgage Loan [Member] Mortgage loan. 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Fiscal year before current fiscal year, charge-off Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff Loans and leases, including fees Interest Income - Loans and Leases Interest and Fee Income, Loan and Lease, Held-in-Portfolio Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Discount remaining Financing Receivable, Discount (Premium), Remaining Financing Receivable, Discount (Premium), Remaining Schedule of Non-Performing Assets Summary Of Non Performing Assets [Table Text Block] Tabular disclosure of non-performing assets, which includes non-accrual loans, troubled debt restructurings, other real estate owned and non-performing investments. 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Schedule of Derivative Financial Instruments on the Consolidated Statements of Income Derivative Instruments, Gain (Loss) [Table Text Block] Total Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months Sensitivity analysis of fair value, change in interest rates, minus 2.00% Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of Two Point Zero Percent Adverse Change In Prepayment Speed Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of Two Point Zero Percent Adverse Change In Prepayment Speed Securities pledged (carrying value), as collateral for short-term borrowings Securities Held as Collateral, at Fair Value Level 1 Fair Value, Inputs, Level 1 [Member] Net change in loans and leases, excluding sales and transfers Payments for (Proceeds from) Financing Receivables Payments for (Proceeds from) Financing Receivables Diluted (USD per share) Earnings Per Share, Diluted FDIC insurance Federal Deposit Insurance Corporation Premium Expense Available for sale, due after five years but within ten years, fair value Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Amortized Cost Basis Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount Weighted average grant price, net adjusted (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Net Adjustment, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Net Adjustment, Weighted Average Grant Date Fair Value Financing receivable, allowance for credit loss, period increase (decrease) Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Period Increase (Decrease) Commercial loan Commercial Loan [Member] Treasury stock, shares (in shares) Treasury Stock, Common, Shares Mortgage loans on real estate, foreclosure Real Estate For Which Foreclosure Process Has Begun Recorded investment of loans secured by real estate for which formal foreclosure proceedings are in process. 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Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Income taxes (refunded) paid Income Taxes Paid, Net Commitments to extend credit Commitments to Extend Credit [Member] Corporate Bond Corporate Bond Securities [Member] Total Leases Operating and Finance Lease, Liability, Payment Due, Rolling Maturity [Abstract] Operating and Finance Lease, Liability, Payment Due, Rolling Maturity Other Wholesale Credit Other Wholesale Credit [Member] Other Wholesale Credit Total lease payments Lessee, Operating Lease, Liability, to be Paid Unrealized gains (losses) arising during the period, net of tax expense (benefit) of $(5) and $9 OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Commercial and industrial Commercial and Industrial [Member] Commercial and Industrial [Member] Premises and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Loans and leases, net of unearned income of $78 and $87 (includes $91 and $85 measured at fair value (1)) Amortized cost loans and leases, carrying amount Total loans and leases Total Loans and Leases Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss Loans transferred to portfolio from held for sale Transfer Of Loans To Portfolio Loans From Held-For-Sale Transfer Of Loans To Portfolio Loans From Held-For-Sale Schedule of Fair Value, Off-balance Sheet Risks [Table] Fair Value, off-Balance-Sheet Risk [Table] Securities sold under repurchase agreements Securities Sold under Agreements to Repurchase Schedule of Fair Values and Unrealized Losses of Impaired Securities, Segregated by Length of Impairment Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Expiration Date Trading Arrangement Expiration Date Derivative gain or losses excluded from assessment of hedge effectiveness Gain (Loss) from Components Excluded from Assessment of Cash Flow Hedge Effectiveness, Net Debt securities held to maturity, allowance for credit losses Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest Other investments Other Investments [Member] Geographic Concentration Risk Geographic Concentration Risk [Member] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Percent owner-occupied Owner Occupied [Member] Owner-occupied. 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12 months Operating and Finance Lease, Liability, to be Paid, Next Rolling 12 Months Operating and Finance Lease, Liability, to be Paid, Next Rolling 12 Months Other comprehensive income (loss) before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent Stock-based compensation expense Share-Based Payment Arrangement, Expense Total Liabilities and Shareholders’ Equity Liabilities and Equity Unrecognized Pension and Postretirement Obligations Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Schedule of Servicing Asset at Amortized Cost Servicing Asset at Amortized Cost [Table Text Block] Cash paid for amounts included in the measurement of lease liabilities: Cash Flow, Lessee [Abstract] Cash Flow, Lessee A Rating or Better A Rating or Better [Member] A Rating or Better [Member] Derivative Assets Offsetting Derivative Assets [Abstract] Accounting Policies [Abstract] Accounting Policies [Abstract] Schedule of Lessee, Operating Lease, Liability, Maturity Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Treasury Stock Treasury Stock, Common [Member] Fair value of units vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Current fiscal year Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year Deposits Increase (Decrease) in Demand Deposits Pay vs Performance Disclosure [Line Items] Other Noninterest Income, Miscellaneous Noninterest Income, Miscellaneous Operating lease, liability Present value of lease liabilities Operating Lease, Liability U.S. government agencies US Government Agencies Debt Securities [Member] 90+ Days Past Due Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Liabilities Liabilities [Abstract] Later years Lessee, Operating Lease, Liability, to be Paid, after Rolling Year Five Total liabilities measured at fair value on a recurring basis Financial Liabilities Fair Value Disclosure Net (Charge- Offs) Recoveries Charge-offs Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Past due Financing Receivable, Threshold Period Past Due Schedule of Variable Interest Entities [Table] Variable Interest Entity [Table] Two years before current fiscal year Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Prior, charge-off Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff Derivative instruments: Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax [Abstract] Comprehensive Income (Loss) Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Master Netting Agreement Designation [Axis] Master Netting Agreement Designation [Axis] Master Netting Agreement Designation [Axis] Name Measure Name Available for sale, due in one year or less, fair value Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances Maturities/payments Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Trust Preferred Securities Trust Preferred Securities Subject to Mandatory Redemption [Member] 13 - 24 months Lessee, Operating Lease, Liability, to be Paid, Rolling Year Two Right-of-use assets obtained in exchange for lease obligations: Operating Lease, Assets And Liabilities, Lessee [Abstract] Operating Lease, Assets And Liabilities, Lessee Total non-performing assets Financing Receivable, Non Performing Assets Reflects the carrying amount of the combined amounts for non-accrual loans, troubled debt restructurings and other real estate owned. 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Repurchase of common stock Stock Repurchased During Period, Value Schedule of Changes in AOCI, Net of Tax, by Component Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Non-Performing Nonperforming Financial Instruments [Member] Direct installment Direct Installment [Member] Direct Installment [Member] Finance lease liability Present value of lease liabilities Finance Lease, Liability Arrangement Duration Trading Arrangement Duration Consumer lines of credit Consumer Lines of Credit [Member] Consumer Lines of Credit Segments [Axis] Segments [Axis] Mortgage loans sold with servicing retained Loans Sold With Servicing Retained Loans Sold With Servicing Retained Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] STOCK INCENTIVE PLANS Share-Based Payment Arrangement [Text Block] Term of modified payment deferral Financing Receivable, Modified, Payment Deferral, Term Financing Receivable, Modified, Payment Deferral, Term 37 - 48 months Finance Lease, Liability, to be Paid, Rolling Year Four Assets Assets [Abstract] Credit Facility [Axis] Credit Facility [Axis] Later years Operating and Finance Lease, Liability, to be Paid, after Rolling Year Five Operating and Finance Lease, Liability, to be Paid, after Rolling Year Five Underlying Security Market Price Change Underlying Security Market Price Change, Percent Debt Instrument [Axis] Debt Instrument [Axis] Loans modified, specific reserves Financing Receivable, Modified, Allowance For Credit Loss, Specific Reserves Financing Receivable, Modified, Allowance For Credit Loss, Specific Reserves Weighted average grant price, forfeited/expired/canceled (USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] Credit Facility [Domain] Credit Facility [Domain] Shareholders’ Equity Equity, Attributable to Parent [Abstract] Schedule of Financing Receivable, Modified Financing Receivable, Modified [Table Text Block] Patapsco Statutory Trust I Patapsco Statutory Trust I [Member] Patapsco Statutory Trust I Interest Rate Debt Instrument, Interest Rate, Stated Percentage 25 - 36 months Lessee, Operating Lease, Liability, to be Paid, Rolling Year Three Not subject to master netting arrangement Derivative Liability, Not Subject to Master Netting Arrangement Held to maturity, due after five years but within ten years, amortized cost Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 5 through 10 Gross Amount Recognized Derivative Asset, Subject to Master Netting Arrangement, before Offset Depreciation, amortization and accretion Depreciation, Amortization and Accretion, Net Entity Registrant Name Entity Registrant Name Derivative gain to be reclassified within twelve months, net of tax Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months Past due period for loan to be in default Past Due Period For Loan To Be In Default Past due period after which time a loan is considered to be in default of its loan terms. Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Municipal Bonds Municipal Bonds [Member] 0 - 12 months Lessee, Operating Lease, Liability, to be Paid, Next Rolling 12 Months Securities pledged (carrying value), to secure public deposits, trust deposits and for other purposes as required by law Securities With Carrying Value Pledged To Secure Public Deposits Trust Deposits And For Other Purposes The carrying amount (fair value) as of the balance sheet date of securities held that had been pledged to secure public deposits, trust deposits and for other purposes as required by law. 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Schedule of New Accounting Pronouncements and Changes in Accounting Principles Accounting Standards Update and Change in Accounting Principle [Table Text Block] Unrealized Net Gains (Losses) on Debt Securities Available for Sale AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Collateral Received/Pledged Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] Interest Expense Interest Expense, Operating and Nonoperating [Abstract] Gross Amount Offset in the Consolidated Balance Sheets Derivative Liability, Subject to Master Netting Arrangement, Asset Offset Senior Notes Senior Notes [Member] Purchases Payments to Acquire Debt Securities, Available-for-Sale States of the U.S. and political subdivisions (municipals) US States and Political Subdivisions Debt Securities [Member] Investment Securities Held To Maturity [Table] Investment Securities Held To Maturity [Table] Investment Securities Held To Maturity [Table] Fiscal year before current fiscal year Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year Schedule Of Securities [Line Items] Schedule Of Securities [Line Items] Schedule Of Securities [Line Items] Servicing Asset at Amortized Cost, Balance [Roll Forward] Servicing Asset at Amortized Cost, Balance [Roll Forward] Other Subordinated Debt Subordinated Debt [Member] Financial Asset, Aging [Axis] Financial Asset, Aging [Axis] All Executive Categories All Executive Categories [Member] Loan modification, accrued interest receivable Financing Receivable, Modified in Period, Accrued Interest, Amount Common stock - $0.01 par value authorized – 500,000,000 shares issued – 375,030,534 and 375,030,534 shares Common Stock, Value, Issued Finance lease right-of-use asset Finance Lease, Right-of-Use Asset, after Accumulated Amortization Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Present value of lease liabilities Operating and Finance Lease, Liability Operating and Finance Lease, Liability Current fiscal year, charge-off Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff Other subordinated debt Other Long-Term Debt Interest Income - Loans and Leases Interest Income [Member] NEW ACCOUNTING STANDARDS Accounting Standards Update and Change in Accounting Principle [Text Block] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Available for sale, due after ten years, fair value Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Non-performing assets plus 90 days or more past due / total loans and leases plus OREO Financing Receivable, Ratio of Nonperforming Loans and Leases to All Loans Ratio Of Non Performing Loans And Other Real Estate Owned To All Loans And Other Real Estate Owned Reflects the percentage derived from dividing non-performing loans plus other real estate owned by total loans plus other real estate owned. Other Other Interest and Dividend Income Amount of Gain (Loss) Reclassified from AOCI into Income Amount of gain (loss) reclassified from AOCI into net income Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Derivative Contract [Domain] Derivative Contract [Domain] Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable, Allowance for Credit Loss [Table] Transfer into (from) level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net All Individuals All Individuals [Member] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Increase in premises and equipment Payments to Acquire Property, Plant, and Equipment Name Forgone Recovery, Individual Name Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Loan Portfolio Diversification Risk Loan Portfolio Diversification Risk [Member] Loan portfolio diversification risk. Other tax benefits related to tax credit investments Investment Program, Proportional Amortization Method, Elected, Other Income Tax Benefit Non-accrual with No ACL Financing Receivable, Nonaccrual, No Allowance Loans held for sale (includes $317 and $514 measured at fair value (1)) Financing Receivable Held-for-sale, Net, Not Part of Disposal Group, Excluding Accrued Interest Financing Receivable Held-for-sale, Net, Not Part of Disposal Group, Excluding Accrued Interest Short-term advances Short-term Advances Short-term Advances Four years before current fiscal year, charge-off Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff Constant prepayment rate (annualized) Assumption For Fair Value On Securitization Date Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Annualized Constant Prepayment Rate Assumption for fair value on securitization date of interests continued to be held by transferor servicing assets or liabilities annualized constant prepayment rate. 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Two years before current fiscal year, charge-off Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff Later years Finance Lease, Liability, to be Paid, after Rolling Year Five Short-Term Debt, Type [Axis] Short-Term Debt, Type [Axis] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Award Timing Disclosures [Line Items] Measurement Frequency [Domain] Measurement Frequency [Domain] FHLB Federal Home Loan Bank Advances [Member] Deferral period for payment of interest Deferral Period For Payment of Interest Deferral Period For Payment of Interest State taxes Deferred State and Local Income Tax Expense (Benefit) Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] Net Loans and Leases Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss Weighted average interest rate Debt Instrument, Interest Rate During Period Net Income Net income Net Income (Loss) Attributable to Parent Vesting period of units issued Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Service charges Service charges Service Charges Service Charges Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Repurchases of common stock Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date 25 - 36 months Operating and Finance Lease, Liability, to be Paid, Rolling Year Three Operating and Finance Lease, Liability, to be Paid, Rolling Year Three Financing Receivable, Past Due [Table] Financing Receivable, Past Due [Table] Schedule of Offsetting Liabilities Offsetting Liabilities [Table Text Block] Number of unconsolidated subsidiary trusts Number Of Unconsolidated Subsidiary Trusts Number of unconsolidated subsidiary trusts owned by the company. Retained earnings Retained Earnings (Accumulated Deficit) Money market Deposits, Money Market Deposits Schedule of Certain Information Related to Restricted Stock Units Share-Based Payment Arrangement, Cost by Plan [Table Text Block] Risk participation agreements, term Derivative, Remaining Maturity Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Purchases Payments to Acquire Held-to-Maturity Securities Bank owned life insurance, excluding purchases Life Insurance, Corporate or Bank Owned, Change in Value Non-performing loans and leases / total loans and leases Financing Receivable, Ratio of Nonperforming Loans to All Loans and Leases Financing Receivable, Ratio of Nonperforming Loans to All Loans and Leases Debt securities, available-for-sale, less than 12 months, number of positions Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions Unrealized Net Gains (Losses) on Derivative Instruments Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Percentage of increase, commercial real estate price index Forecasted Macroeconomic Variables, Percentage of Growth (Decline), Commercial Real Estate Price Index Forecasted Macroeconomic Variables, Percentage of Growth (Decline), Commercial Real Estate Price Index Statement [Table] Statement [Table] Total deferred income taxes Deferred Income Tax Expense (Benefit) Adjustments to reconcile net income to net cash flows provided by (used in) operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Financing Activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Fair Value Measurements Disclosure [Line Items] Fair Value Measurements Disclosure [Line Items] Fair Value Measurements Disclosure [Line Items] Percentage of increase, housing price index Forecasted Macroeconomic Variables, Percentage of Growth (Decline), Housing Price Index Forecasted Macroeconomic Variables, Percentage of Growth (Decline), Housing Price Index Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract] Schedule of Additional Information about Assets Measured at Fair Value on Recurring Basis Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] All Adjustments to Compensation All Adjustments to Compensation [Member] Held to maturity, with contractual maturities, fair value Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Fair Value Amendment Flag Amendment Flag Tax benefit related to stock-based compensation expense Share-Based Payment Arrangement, Expense, Tax Benefit Fair Value Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract] Common stock shares available up to (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Debt securities, available-for-sale, accrued interest, after allowance for credit loss Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss Transfers and Servicing [Abstract] Transfers and Servicing [Abstract] Treasury stock – 19,359,629 and 17,727,219 shares at cost Treasury Stock, Common, Value Maximum length of time hedged in interest rate cash flow hedge Maximum Length of Time Hedged in Interest Rate Cash Flow Hedge Termination Date Trading Arrangement Termination Date Interest-bearing deposits with banks Interest-Bearing Deposits in Banks and Other Financial Institutions Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Basis points, interest rate, type [Extensible Enumeration] Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Allowance for credit losses on loans and leases Balance at Beginning of Period Balance at End of Period ACL on loans and leases Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest Operating leases Operating Lease, Weighted Average Discount Rate, Percent Basic weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic CASH FLOW INFORMATION Cash Flow, Supplemental Disclosures [Text Block] Schedule of Computation of Basic and Diluted Earnings Per Common Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Total Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement Schedule of Deposits Deposit Liabilities, Type [Table Text Block] Segment Reporting [Abstract] Segment Reporting [Abstract] Debt securities available for sale: OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] FHLB amount available for borrowing Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds Unrealized loss on debt securities, available-for-sale and held-to-maturity, backed or sponsored percentage Unrealized Loss on Debt Securities, Available-for-Sale and Held-to-Maturity, Backed or Sponsored Percentage Unrealized Loss on Debt Securities, Available-for-Sale and Held-to-Maturity, Backed or Sponsored Percentage Derivative Liabilities Offsetting Derivative Liabilities [Abstract] Debt securities, available-for-sale, realized loss (gain) Debt Securities, Available-for-Sale, Realized Gain (Loss) Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award [Line 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Statutory Trust II FNB Statutory Trust Two [Member] FNB statutory trust two. FNB Financial Services Capital Trust I FNB Financial Services Capital Trust One [Member] FNB financial services capital trust one. 0 - 12 months Finance Lease, Liability, to be Paid, Next Rolling 12 Months 13 - 24 months Operating and Finance Lease, Liability, to be Paid, Rolling Year Two Operating and Finance Lease, Liability, to be Paid, Rolling Year Two Use of Estimates Use of Estimates, Policy [Policy Text Block] Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Tax credit partnerships Tax Credit Partnerships [Member] Tax Credit Partnerships [Member] Operating cash flows from finance leases Finance Lease, Interest Payment on Liability Net occupancy Occupancy, Net Settlement amount Litigation Settlement, Amount Awarded to Other Party Less: imputed interest Operating and Finance Lease, Liability, Undiscounted Excess Amount Operating and Finance Lease, Liability, Undiscounted Excess Amount Gross amounts offset in the balance sheet Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Insider Trading Arrangements [Line Items] Prior Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year Schedule of Leases, Other Information Leases, Other Information [Table Text Block] Leases, Other Information [Table Text Block] Current Current Financial Asset, Not Past Due [Member] Debt securities available for sale, allowance for credit losses Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest Total Liabilities Total Liabilities Liabilities Interest rate lock commitments – not designated Interest Rate Lock Commitments Interest Rate Lock Commitments [Member] Available for sale, with contractual maturities, amortized cost Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost % of Total Class of Financing Receivable Financing Receivable, Excluding Accrued Interest, Modified in Period, to Total Financing Receivables, Percentage Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Extended credit and standby letters of credit Fair Value Disclosure, off-Balance-Sheet Risks, Amount, Liability Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Sensitivity analysis of fair value, change in interest rates, plus 1.00% Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of One Point Zero Percent Favorable Change In Prepayment Speed Sensitivity analysis of fair value of interests continued to be held by transferor servicing assets or liabilities impact of one point zero percent favorable change in prepayment speed. Savings Deposits, Savings Deposits Financial Instrument Performance Status [Domain] Financial Instrument Performance Status [Domain] Issuance of common stock Stock Issued During Period, Value, New Issues Consolidation Items [Axis] Consolidation Items [Axis] Allowance for credit losses on loan commitments that are not unconditionally cancellable Allowance For Credit Losses On Loan Commitments Allowance For Credit Losses On Loan Commitments Schedule of Certain Information Relating to Commercial Real Estate Loans Commercial Loans Receivables [Table Text Block] Tabular disclosure of certain information relating to commercial real estate loans receivable. Short-term advances, overnight maturities, percentage Short-term Advances, Percentage Bearing Fixed Interest Rate Short-term Advances, Percentage Bearing Fixed Interest Rate Provision for income taxes: Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, after Amortization Expense [Abstract] Schedule Of Allowance For Loan Losses [Table] Schedule Of Allowance For Loan Losses [Table] Schedule Of Allowance For Loan Losses [Table] Maturities/payments Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Secured Overnight Financing Rate (SOFR) [Member]