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Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset Derivative Liability, Collateral, Right to Reclaim Cash, Offset Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset Nonaccrual Loan [Member] Nonaccrual Loan [Member] Nonaccrual loan. 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Cover [Abstract] Maximum Maximum [Member] Real Estate Owned, Transfer to Real Estate Owned Real Estate Owned, Transfer to Real Estate Owned Options Exercisable, Weighted Average Exercise Price (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Subordinated Borrowing [Axis] Subordinated Borrowing [Axis] TotalShortTermLongTermExcludingFHLB TotalShortTermLongTermExcludingFHLB Total Short Term Long Term Excluding FHLB Finite-Lived Intangible Assets, Net, Total Finite-Lived Intangible Assets, Net Finite-Lived Intangible Assets, Net Debt Securities, Available-for-sale, Unrealized Loss Position Debt Securities, Available-for-Sale, Unrealized Loss Position Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Debt Instrument, Collateral Amount Debt Instrument, Collateral Amount Restricted Stock Award Restricted Stock [Member] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Debt, Long-Term and Short-Term, Combined Amount Debt, Long-Term and Short-Term, Combined Amount Retirement Benefits [Abstract] Retirement Benefits [Abstract] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Other Assets [Member] Other Assets [Member] Other Assets [Member] Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Debt Instrument, Redemption Debt Instrument, Redemption Debt Instrument, Redemption Financing Receivable, Modified, Weighted Average Term Increase from Modification Financing Receivable, Modified, Weighted Average Term Increase from Modification Entity Shell Company Entity Shell Company Common Stock, Number of Shares, Par Value and Other Disclosure [Abstract] Common Stock, Number of Shares, Par Value and Other Disclosure [Abstract] Interest and Dividend Income, Securities, by Taxable Status [Abstract] Interest and Dividend Income, Securities, by Taxable Status [Abstract] Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Recourse Status [Domain] Recourse Status [Domain] (Gain) loss on mortgage banking activities, net (Gain) loss on mortgage banking activities, net (Gain) loss on mortgage banking activities, net Bank Term Funding Program Funding Bank Term Funding Program Funding Bank Term Funding Program Funding Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Short-Term Debt [Abstract] Short-Term Debt [Abstract] Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Year One Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Year One Letter of Credit [Member] Letter of Credit [Member] Offsetting Liabilities [Table] Offsetting Liabilities [Table] Maximum Length of Time Hedged in Cash Flow Hedge Maximum Length of Time Hedged in Cash Flow Hedge Distributed Earnings To Common Shareholders Diluted Distributed Earnings To Common Shareholders Diluted Distributed earnings to common shareholders diluted. Document Fiscal Period Focus Document Fiscal Period Focus Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member] Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member] Award Timing Method Award Timing Method [Text Block] Award Type [Axis] Award Type [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Business Combination, Pro Forma Information [Table Text Block] Business Combination, Pro Forma Information [Table Text Block] Servicing Asset at Fair Value, Other Changes in Fair Value Servicing Asset at Fair Value, Other Changes in Fair Value Lending Related Commitments, Fair Value Commitments, Fair Value Disclosure Trading Symbol Trading Symbol Lessee, Operating Lease, Liability, to be Paid, Year Four Lessee, Operating Lease, Liability, to be Paid, Year Four Gain (loss) on derivative instruments not designated as hedging instruments Schedule Of Derivative Instruments Gain Loss Not Designated As Hedging Instruments [Table Text Block] Schedule of derivative instruments gain loss not designated as hedging instruments. Interest Income, Securities, Operating, Tax Exempt Interest Income, Securities, Operating, Tax Exempt Off-Balance-Sheet, Credit Loss, Liability, Acquired during period Off-Balance-Sheet, Credit Loss, Liability, Acquired during period Off-Balance-Sheet, Credit Loss, Liability, Acquired during period Interest Expense, Long-Term Debt Interest Expense, Long-Term Debt Proceeds from Investing Activity [Abstract] Proceeds from Investing Activity [Abstract] Entity Address, City or Town Entity Address, City or Town Finance Lease, Weighted Average Discount Rate, Percent Finance Lease, Weighted Average Discount Rate, Percent Federal Home Loan Bank Stock and Federal Reserve Bank Stock FHLB and Federal Reserve Bank stocks Federal Home Loan Bank Stock and Federal Reserve Bank Stock Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Proceeds from (Repayments of) Short-Term Debt Proceeds from (Repayments of) Short-Term Debt Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Lessee, Lease Information [Table Text Block] Lessee, Lease Information [Table Text Block] Lessee, Lease Information [Table Text Block] Fair Value of Pledged Securites to Securities Sold under Agreements to Repurchase Fair Value of Pledged Securites to Securities Sold under Agreements to Repurchase Fair Value of Pledged Securites to Securities Sold under Agreements to Repurchase Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Debt Securities, Held-to-Maturity, Credit Quality Indicator [Table Text Block] Debt Securities, Held-to-Maturity, Credit Quality Indicator [Table Text Block] Business Combination, Consideration Transferred Business Combination, Consideration Transferred Financial Asset, 30-89 Days Past Due [Member] Financial Asset, 30-89 Days Past Due [Member] Financial Asset, 30-89 Days Past Due Entity Emerging Growth Company Entity Emerging Growth Company Debt Securities, Held-to-Maturity [Table Text Block] Debt Securities, Held-to-Maturity [Table Text Block] Finance Lease, Weighted Average Remaining Lease Term Finance Lease, Weighted Average Remaining Lease Term Derivative collateral right to reclaim cash Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, Beginning Balance Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, Ending Balance Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Revenue from Contract with Customer, Including Assessed Tax, Out of Scope Topic 606 Revenue from Contract with Customer, Including Assessed Tax Equity Securities without Readily Determinable Fair Value [Table Text Block] Equity Securities without Readily Determinable Fair Value [Table Text Block] Noninterest Income, Total Noninterest Income Noninterest Income Finance Lease, Liability, Undiscounted Excess Amount Finance Lease, Liability, Undiscounted Excess Amount Common Stock, Shares, Outstanding Common Stock, Shares, Outstanding Subordinated Borrowing, Name [Domain] Subordinated Borrowing, Name [Domain] Fitch, AAA Rating [Member] Fitch, AAA Rating [Member] Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Board Authorized Purchase Program [Member] Board Authorized Purchase Program [Member] Board Authorized Purchase Program Noninterest Expense [Abstract] Noninterest Expense [Abstract] Cash and Due from Banks Cash and Due from Banks Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff Gross gains on HTM securities Debt Securities, Held-to-maturity, Sold, Realized Gain Debt Securities, Held-to-maturity, Sold, Realized Gain Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Allocated indirect expense Allocated indirect expense Allocated indirect expense Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Income Tax Expense (Benefit) Income Tax Expense (Benefit) Income Tax Expense (Benefit) Other Assets Other Assets Government National Mortgage Association (GNMA) [Member] Government National Mortgage Association (GNMA) [Member] Document Information [Line Items] Document Information [Line Items] Preferred Stock, Shares Issued Preferred Stock, Shares Issued Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Designated as Hedging Instrument Designated as Hedging Instrument [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Hedging Relationship [Axis] Hedging Relationship [Axis] Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Offsetting [Abstract] Offsetting [Abstract] Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Remaining requisite service periods, extend through Employee Service Share Based Compensation Nonvested Awards Compensation Cost Not Yet Recognized Year For Recognition Employee service share based compensation nonvested awards total compensation cost not yet recognized year for recognition. Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Goodwill, Acquired During Period Goodwill, Acquired During Period Decrease in net income tax position Increase (Decrease) in Income Taxes Net cash received from the American National acquisition Payments to Acquire Businesses, Net of Cash Acquired Schedule Of Unfunded Commitments [Table Text Block] Schedule Of Unfunded Commitments [Table Text Block] Schedule of allowance for loans and lease losses table text block. All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Noninterest Income, Other Operating Income Noninterest Income, Other Operating Income Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Beginning Balance Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Business Combination, Consideration Transferred, Equity Interest [Table] Business Combination, Consideration Transferred, Equity Interest [Table] Schedule of Available-for-sale and Held-to-maturity Securities [Line Items] Schedule of Available-for-sale and Held-to-maturity Securities [Table] [Line Items] [Line Items] for Schedule of Available-for-sale and Held-to-maturity Securities [Table] [Table] Net Cash Provided by (Used in) Operating Activities, Total Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Debt Instrument, Term Debt Instrument, Term Proceeds from Sale of Debt Securities, Available-for-Sale Proceeds from Sale of Debt Securities, Available-for-Sale Financial Service, Other [Member] Financial Service, Other [Member] Preferred Stock, Par or Stated Value Per Share Preferred Stock, Par or Stated Value Per Share Subsequent Event Subsequent Event [Member] Lessee, Operating Lease, Liability, to be Paid, after Year Four Lessee, Operating Lease, Liability, to be Paid, after Year Four Lessee, Operating Lease, Liability, to be Paid, after Year Four Business Combination, Recognized Asset Acquired, Other Asset, Current Business Combination, Recognized Asset Acquired, Other Asset, Current Financing Receivable, Allowance for Credit Loss, Recovery Financing Receivable, Allowance for Credit Loss, Recovery Interest Income (Expense), Operating, Total Interest Income (Expense), Operating Interest Income (Expense), Operating Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Loan, Transfer from Held-for-Sale to Held-in-Portfolio Loan, Transfer from Held-for-Sale to Held-in-Portfolio Depreciation Depreciation Schedule of Assumptions for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Table Text Block] Schedule of Assumptions for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Table Text Block] Finance Lease, Liability, to be Paid, Year Four Finance Lease, Liability, to be Paid, Year Four Business Combination, Recognized Asset Acquired, Asset [Abstract] Business Combination, Recognized Asset Acquired, Asset [Abstract] Derivative Liability, Subject to Master Netting Arrangement, before Offset Derivative Liability, Subject to Master Netting Arrangement, before Offset Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year Liabilities Assumed Liabilities Assumed Equity Components [Axis] Equity Components [Axis] Standby Letters of Credit [Member] Standby Letters of Credit [Member] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Number of Reportable Segments Number of Reportable Segments Fair Value, Net Derivative Asset (Liability) Measured On Recurring Basis With Unobservable Inputs - Forward Commitments Fair Value, Net Derivative Asset (Liability) Measured On Recurring Basis With Unobservable Inputs - Forward Commitments Fair Value, Net Derivative Asset (Liability) Measured On Recurring Basis With Unobservable Inputs - Forward Commitments Entity Address, State or Province Entity Address, State or Province Substandard [Member] Substandard [Member] Finance Lease, Principal Payments Finance Lease, Principal Payments Interest and Dividend Income, Operating, Total Interest and Dividend Income, Operating Financial Asset, Period Past Due [Domain] Financial Asset, Aging [Domain] Special Mention [Member] Special Mention [Member] Undistributed Earnings (Loss) Available to Common Shareholders, Diluted Undistributed Earnings (Loss) Available to Common Shareholders, Diluted Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Dividends, Common Stock Dividends, Common Stock Servicing Asset Servicing Asset Loans Receivable, Fair Value Disclosure Loans Receivable, Fair Value Disclosure Commercial and Industrial Sector [Member] Commercial and Industrial Sector Commercial and Industrial Sector [Member] Individual: Individual [Axis] Payments of Ordinary Dividends, Common Stock Payments of Ordinary Dividends, Common Stock Entities [Table] Entities [Table] A portion of total depreciation Technology expense A portion of total depreciation Technology expense A portion of total depreciation Technology expense Financing Receivable, Modified, Past Due [Table Text Block] Financing Receivable, Modified, Past Due [Table Text Block] Loans Repurchased Under Make Whole Requests Loans Repurchased Under Make Whole Requests Loans repurchased under make whole requests Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Other Depreciation and Amortization Other Depreciation and Amortization Financing Receivable, Originated Three Years before Latest Fiscal Year Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year Entity Interactive Data Current Entity Interactive Data Current Securities Insured or Guaranteed by Government Authorities [Axis] Securities Insured or Guaranteed by Government Authorities [Axis] Securities Insured or Guaranteed by Government Authorities Summary of Restricted Stock Awards Activity (Excluding Salary Shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract] Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff Business Combination, Reason for Business Combination Business Combination, Reason for Business Combination Community, Consumer, and Business [Member] Community, Consumer, and Business [Member] Community, Consumer, and Business segment Financing Receivable, Modified [Line Items] Financing Receivable, Modified [Line Items] Home Equity Line of Credit [Member] Home Equity Line of Credit [Member] Interest and Dividend Income, Operating [Abstract] Interest and Dividend Income, Operating [Abstract] Held-to-maturity Securities [Member] Held-to-Maturity Securities [Member] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Noninterest Expense, Total Noninterest Expense Noninterest Expense Federal Funds Sold and Securities Borrowed or Purchased under Agreements to Resell, Fair Value Disclosure Federal Funds Sold and Securities Borrowed or Purchased under Agreements to Resell, Fair Value Disclosure Interest Expense, Deposits Interest Expense, Deposits Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Financing Receivable, Originated in Current Fiscal Year Financing Receivable, Year One, Originated, Current Fiscal Year Noninterest Income [Abstract] Noninterest Income [Abstract] Financing Receivable, Revolving Financing Receivable, Revolving Finance Lease, Liability, to be Paid, Year Two Finance Lease, Liability, to be Paid, Year Two Forward Commitments to Sell Residential Mortgage Loans Forward Commitments to Sell Residential Mortgage Loans [Member] Forward Commitments to Sell Residential Mortgage Loans Interest Income (Expense), before Provision Interest Income (Expense), before Provision Interest Income (Expense), before Provision SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount Two Thousand Twenty Four Senior Notes Two Thousand Twenty Four Senior Notes [Member] Two Thousand Twenty Four Senior Notes Entity Central Index Key Entity Central Index Key PEO Name PEO Name Noninterest-Bearing Domestic Deposit, Demand Noninterest-bearing Domestic Deposit, Demand Noninterest-Bearing Domestic Deposit, Demand Revenues, Total Revenues Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Financing Receivable Credit Quality Indicators [Table Text Block] Financing Receivable Credit Quality Indicators [Table Text Block] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Length Of Time Held To Maturity Securities Are In Continuous Unrealized Loss Position [Axis] Length Of Time Held To Maturity Securities Are In Continuous Unrealized Loss Position [Axis] Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plan [Table] Investment Program, Proportional Amortization Method, Elected, Commitment Investment Program, Proportional Amortization Method, Elected, Commitment Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Business Combination, Separately Recognized Transaction, Acquisition-Related Cost, Expensed Business Combination, Separately Recognized Transaction, Acquisition-Related Cost, Expensed Business Combination, Separately Recognized Transaction, Acquisition-Related Cost, Expensed Business Combination, Description of Acquiree Business Combination, Description of Acquiree Other Consumer [Member] Other Consumer [Member] Installment. Lessee, Operating Lease, Lease Not yet Commenced, Liability Lessee, Operating Lease, Lease Not yet Commenced, Liability Lessee, Operating Lease, Lease Not yet Commenced, Liability Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Class of Stock [Domain] Class of Stock [Domain] Net intersegment interest income (expense) Net intersegment interest income (expense) Net intersegment interest income (expense) Finite-Lived Intangible Asset, Expected Amortization, Year Three Finite-Lived Intangible Asset, Expected Amortization, Year Three Balance Sheet Location [Axis] Statement of Financial Position Location, Balance [Axis] Financing Receivable, before Allowance for Credit Loss Financing Receivable, before Allowance for Credit Loss, Total Financing Receivable, before Allowance for Credit Loss Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Entity Address, Address Line One Entity Address, Address Line One Summary of Derivative Instruments Impact on Results of Operations [Abstract] AOCI Attributable to Parent [Member] AOCI Attributable to Parent [Member] AOCI Attributable to Parent [Member] Investments [Domain] Investments [Domain] Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Stock Issued Stock Issued Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Off-Balance Sheet, Credit Loss, Liability [Roll Forward] Off-Balance-Sheet, Credit Loss, Liability [Roll Forward] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Loans and Leases Receivable Disclosure [Line Items] Loans and Leases Receivable Disclosure [Line Items] Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivative Instruments and Hedging Activities Disclosure [Text Block] Proceeds from Sale and Maturity of Other Investments Proceeds from Sale and Maturity of Other Investments Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Other Liabilities [Member] Other Liabilities [Member] Other Liabilities [Member] Fair Value as of Grant Date Award Grant Date Fair Value Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax Derivative Instrument Detail [Abstract] Derivative Instruments Not Designated as Hedging Instruments [Abstract] Derivative Instrument Detail [Abstract] Undistributed Earnings, Basic, Total Undistributed Earnings, Basic Financing Receivable, Modified, Subsequent Default [Line Items] Financing Receivable, Modified, Subsequent Default [Line Items] Payments of Financing Costs Payments of Loan Costs Labor and Related Expense Labor and Related Expense Labor and Related Expense Derivative Instruments and 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Latest Fiscal Year Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year Other Noninterest Expense Other Noninterest Expense Other Noninterest Expense Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Interest Rate Related Instruments Customer and Mirror [Member] Interest Rate Related Instruments Customer and Mirror [Member] Interest rate related instruments customer and mirror. Loan Restructuring Modification [Axis] Loan Restructuring Modification [Axis] Pass [Member] Pass [Member] Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax Interest Rate Contract Interest Rate Contract [Member] Equity Securities without Readily Determinable Fair Value [Line Items] Equity Securities without Readily Determinable Fair Value [Line Items] Time Deposits, at Carrying Value Time Deposits, at Carrying Value Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Proceeds from Sale and Maturity of Marketable Securities Proceeds from Sale and Maturity of Marketable Securities Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Equity securities with readily determinable fair values, Fair Value Equity Securities, FV-NI, Current Stock Issued During Period, Value, Acquisitions Stock Issued During Period, Value, Acquisitions Assumption for Fair Value of Financing Receivable, Individually Evaluated for Credit Loss, Collateral Realization Assumption for Fair Value of Financing Receivable, Individually Evaluated for Credit Loss, Collateral Realization Assumption for Fair Value of Financing Receivable, Individually Evaluated for Credit Loss, Collateral Realization Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less) Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted Average Number of Shares Outstanding, Diluted [Abstract] Schedule of Held-to-maturity Securities [Line Items] Schedule of Held-to-Maturity Securities [Line Items] Financing Receivable, Past Due [Table Text Block] Financing Receivable, Past Due [Table Text Block] Schedule Of Lending Related And Other Commitments [Table] Other Commitments [Table] Net Cash Provided by (Used in) Financing Activities, Total Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Unvested Share based Payment Awards Unvested Share based Payment Awards Unvested Share based Payment Awards. Measure: Measure [Axis] Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract] Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract] Credit Rating, Moody's [Axis] Credit Rating, Moody's [Axis] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Finite-Lived Intangible Asset, Expected Amortization, after Year Five Finite-Lived Intangible Asset, Expected Amortization, after Year Five American National [Member] American National [Member] American National [Member] Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Consumer Portfolio Segment [Member] Consumer Portfolio Segment [Member] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Interests Continued to be Held by Transferor in Financial Assets that It has Securitized or Servicing Assets or Liabilities Relating to Assets that It has Securitized [Abstract] Interests Continued to be Held by Transferor in Financial Assets that It has Securitized or Servicing Assets or Liabilities Relating to Assets that It has Securitized [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Entity Tax Identification Number Entity Tax Identification Number Discounted Cash Flow Valuation Technique, Discounted Cash Flow [Member] Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value Derivative [Member] Derivative [Member] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price, Beginning Balance Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price, Ending Balance Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Two Thousand Fourteen Subordinated Notes [Member] Two Thousand Fourteen Subordinated Notes [Member] Two Thousand Fourteen Subordinated Notes [Member] Debt Securities, Available-for-Sale, Unrealized Loss Debt Securities, Available-for-Sale, Unrealized Loss Common Stock, Shares, Issued Common Stock, Shares, Issued Operating Lease, Weighted Average Remaining Lease Term Operating Lease, Weighted Average Remaining Lease Term Commercial Mortgage-Backed Securities [Member] Commercial Mortgage-Backed Securities [Member] Commercial Mortgage-Backed Securities [Member] Derivatives Not Designated as Hedging Instruments [Table Text Block] Derivatives Not Designated as Hedging Instruments [Table Text Block] Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Loan and Lease, Transfer from Held-in-Portfolio to Held-for-Sale Loan and Lease, Transfer from Held-in-Portfolio to Held-for-Sale Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Series E Preferred Stock Series E Preferred Stock [Member] Security Exchange Name Security Exchange Name Fair Value, Net Derivative Asset (Liability) Measured On Recurring Basis With Unobservable Inputs - Interest Rate Lock Commitements Fair Value, Net Derivative Asset (Liability) Measured On Recurring Basis With Unobservable Inputs - Interest Rate Lock Commitements Fair Value, Net Derivative Asset (Liability) Measured On Recurring Basis With Unobservable Inputs - Interest Rate Lock Commitements Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Amortization of Net Unrealized Losses on Available-for-Sale Securities Transfered to Held-to-maturity Securities Amortization of Net Unrealized Losses on Available-for-Sale Securities Transfered to Held-to-maturity Securities Amortization of Net Unrealized Losses on Available-for-Sale Securities Transfered to Held-to-maturity Securities Amortization of Net Unrealized Losses on Available-for-Sale Securities Transfered to Held-to-maturity Securities Balance at beginning of period Balance at end of period Allowance for Credit Losses on Loans Allowance for Credit Losses on Loans Business Combination, Separately Recognized Transaction [Line Items] Business Combination, Separately Recognized Transaction [Line Items] Asset Class [Domain] Asset Class [Domain] Financing Receivable, Modified, Subsequent Default [Table] Financing Receivable, Modified, Subsequent Default [Table] Statement [Line Items] Statement [Line Items] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Common Stock [Member] Common Stock [Member] Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Schedule of Assumptions for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Table] Schedule of Assumptions for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Table] Business Combination, Recognized Asset Acquired, Asset, Current Business Combination, Recognized Asset Acquired, Asset, Current Common Stock, Dividends, Per Share, Cash Paid Common Stock, Dividends, Per Share, Cash Paid Federal Funds Purchased Federal Funds Purchased Statistical Measurement [Domain] Statistical Measurement [Domain] Business Combination [Abstract] Business Combination [Abstract] Business Combination, Separately Recognized Transaction [Table] Business Combination, Separately Recognized Transaction [Table] Loans and Leases Receivable, Net Amount Loans and Leases Receivable, Net Amount Loans and Leases Receivable, Net Amount Finance Lease, Payments Finance Lease, Payments Finance Lease, Payments Short-term Debt, Fair Value Short-Term Debt, Fair Value Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Financing Receivable, Nonaccrual, Interest Income Financing Receivable, Nonaccrual, Interest Income Asset Class [Axis] Asset Class [Axis] Payments of Financing Costs Payments of Financing Costs Lending Related Commitments Lending Related Commitments Lending related commitments. Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Leases [Abstract] Leases [Abstract] Total fair value of unrealized losses on held to maturity securities Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value Earnings Per Share, Basic [Abstract] Earnings Per Share, Basic [Abstract] Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year Gross losses on HTM securities Debt Securities, Held-to-maturity, Sold, Realized Loss Debt Securities, Held-to-maturity, Sold, Realized Loss Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares Credit Risk Credit Risk [Member] Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Earnings Per Share, Basic Earnings Per Share, Basic Earnings Per Share, Basic Liabilities, Fair Value Disclosure Liabilities, Fair Value Disclosure [Abstract] Make Whole Requests, Loan Origination Date, Majority Make Whole Requests, Loan Origination Date, Majority Make Whole Requests, Loan Origination Date, Majority Additional Collateral, Aggregate Fair Value Additional Collateral, Aggregate Fair Value Other Comprehensive Income (Loss), Net of Tax, Total Other Comprehensive Income (Loss), Net of Tax Other Comprehensive Income (Loss), Net of Tax Selected segment information Schedule of Segment Reporting Information, by Segment [Table Text Block] Short-Term Debt Short-Term Debt Increase (Decrease) in Accrued Interest Receivable, Net Increase (Decrease) in Accrued Interest Receivable, Net Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Business Combination, Pro Forma Information, Nonrecurring Adjustment [Table Text Block] Business Combination, Pro Forma Information, Nonrecurring Adjustment [Table Text Block] Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] Increase (Decrease) in Fair Value of Interest Rate Fair Value Hedging Instruments Increase (Decrease) in Fair Value of Interest Rate Fair Value Hedging Instruments Fair Value Measurements, Nonrecurring [Table Text Block] Fair Value Measurements, Nonrecurring [Table Text Block] Finance Lease, Liability, to be Paid, Year Three Finance Lease, Liability, to be Paid, Year Three Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Assumption for Fair Value of Financing Receivable, Individually Evaluated for Credit Loss, Discount factor Assumption for Fair Value of Financing Receivable, Individually Evaluated for Credit Loss, Discount factor Assumption for Fair Value of Financing Receivable, Individually Evaluated for Credit Loss, Discount factor Schedule of Servicing Assets at Fair Value [Table Text Block] Schedule of Servicing Assets at Fair Value [Table Text Block] Interest Income, Securities, Operating, Taxable Interest Income, Securities, Operating, Taxable Accounts and Financing Receivables [Table] Accounts and Financing Receivables [Table] Share-Based Payment Arrangement, Expense Share-Based Payment Arrangement, Expense Hedging Designation [Domain] Hedging Designation [Domain] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Fair Value Measurements (Textuals) [Abstract] Fair Value Measurement Inputs and Valuation Techniques [Abstract] Liabilities and Equity, Total Liabilities and Equity Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Stock Issued During Period, Shares, Acquisitions Stock Issued During Period, Shares, Acquisitions Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Available-for-sale Securities [Member] Available-for-sale Securities [Member] Available-for-Sale Securities [Member] Offsetting Derivative Assets [Abstract] Offsetting Derivative Assets [Abstract] Derivative Collateral Obligation to Return Collateral Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Security Not Offset Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Forward Contracts [Member] Forward Contracts [Member] Schedule Of Financing Receivables Purchased Seasoned Loans [Table Text Block] Schedule Of Financing Receivables Purchased Seasoned Loans [Table Text Block] Schedule Of Financing Receivables Purchased Seasoned Loans Treasury Stock, Common Treasury Stock, Common [Member] Pay vs Performance Disclosure [Line Items] Operating Lease, Liability Operating Lease, Liability Operating Lease, Liability Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Increase (Decrease) in Derivative Assets and Liabilities Increase (Decrease) in Derivative Assets and Liabilities Business Combination Business Combination [Text Block] Automobile Loan [Member] Automobile Loan [Member] Goodwill, Impairment Loss Goodwill, Impairment Loss Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Lessee, Operating Lease, Liability, to be Paid, Year Three Lessee, Operating Lease, Liability, to be Paid, Year Three Defined Benefit Plan, Plan Assets, Contributions by Employer Defined Benefit Plan, Plan Assets, Contributions by Employer Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax [Abstract] Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax [Abstract] Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total Comprehensive Income (Loss), Net of Tax, Attributable to Parent Future Accounting Pronouncements Future Accounting Pronouncements [Policy Text Block] Future Accounting Pronouncements Name Measure Name Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Investment Program, Proportional Amortization Method, Elected [Line Items] Investment Program, Proportional Amortization Method, Elected [Line Items] Increase (Decrease) in Deposits Increase (Decrease) in Deposits Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Interest Rate Below Market Reduction [Member] Interest Rate Below Market Reduction [Member] Marketable Securities, Gain (Loss) Marketable Securities, Gain (Loss) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Period Increase (Decrease) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Period Increase (Decrease) SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] Financing Receivable, Modified, Subsequent Default [Table Text Block] Financing Receivable, Modified, Subsequent Default [Table Text Block] Available for Sale Available-for-Sale Securities, Debt Maturities [Abstract] Long-term Debt Long-Term Debt Measurement Input, Quoted Price Measurement Input, Quoted Price [Member] Assets, Total Assets Assets Finite-Lived Intangible Asset, Expected Amortization, Year One Finite-Lived Intangible Asset, Expected Amortization, Year One Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Financing Receivable, Allowance for Credit Loss [Roll Forward] Financing Receivable, Allowance for Credit Loss [Roll Forward] Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Receivable Type [Axis] Receivable Type [Axis] Business Combination, Pro Forma Information [Line Items] Business Combination, Pro Forma Information [Line Items] Total Common Equity Total Common Equity Total Common Equity Allowance for Credit Losses on Loans [Abstract] Allowance for Credit Losses on Loans [Abstract] Allowance for Credit Losses on Loans, includes unfunded commitments Assets, Fair Value Disclosure [Abstract] Assets, Fair Value Disclosure [Abstract] Community, Consumer and Business [Member] Community, Consumer and Business [Member] Community, Consumer and Business [Member] Finite-Lived Intangible Asset, Expected Amortization, Year Four Finite-Lived Intangible Asset, Expected Amortization, Year Four Debt Securities, Held-to-Maturity, Fair Value Debt Securities, Held-to-Maturity, Fair Value Debt Securities, Held-to-Maturity, Fair Value Finance Lease, Liability, to be Paid, Year One Finance Lease, Liability, to be Paid, Year One Other Investments Other Investments Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Provision for Loan, Lease, and Other Losses at Acquisition Provision for Loan, Lease, and Other Losses at Acquisition Provision for Loan, Lease, and Other Losses at Acquisition Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] Debt Instrument Call Date Earliest Month Year Debt Instrument Call Date Earliest Month Year Debt Instrument Call Date Earliest Month Year Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Business Combination [Domain] Business Combination [Domain] Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Residential Mortgage [Member] Residential Mortgage [Member] Document Information [Table] Document Information [Table] PEO PEO [Member] Investments Classified by Contractual Maturity Date [Table Text Block] Investments Classified by Contractual Maturity Date [Table Text Block] Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest, Total Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Not Rated [Member] Not Rated [Member] Not Rated Financial Asset Acquired with Credit Deterioration [Member] Financial Asset Acquired with Credit Deterioration [Member] Interest-Bearing Domestic Deposit, Demand Interest-Bearing Domestic Deposit, Demand Time Deposits Time Deposits Loss on Sale of Investments Loss on Sale of Investments Retained Earnings [Member] Retained Earnings [Member] Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Beginning Balance Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Ending Balance Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Derivative Asset Derivative Asset Derivative Asset Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Preferred Stock, Dividends, Per Share, Cash Paid Preferred Stock, Dividends, Per Share, Cash Paid Interest Expense Interest Expense [Member] Fair Value, Nonrecurring [Member] Fair Value, Nonrecurring [Member] Increase (Decrease) in Interest Payable, Net Increase (Decrease) in Interest Payable, Net Intangible Assets, Net (Excluding Goodwill) Intangible Assets, Net (Excluding Goodwill) Financing Receivable, Modified [Table] Financing Receivable, Modified [Table] Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) Federal Reserve Bank Stock Federal Reserve Bank Stock Product and Service [Domain] Product and Service [Domain] Financing Receivable, Revolving, Converted To Term Loan Financing Receivable, Revolving, Converted to Term Loan Dividends [Abstract] Dividends [Abstract] Payments to Acquire Federal Home Loan Bank Stock Payments to Acquire Federal Home Loan Bank Stock Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Liabilities, Fair Value Disclosure Liabilities, Fair Value Disclosure Business Combination [Table] Business Combination [Table] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Business Acquisition Equity Consideration Per Share Conversion Ratio Business Acquisition Equity Consideration Per Share Conversion Ratio Business Acquisition Equity Consideration Per Share Conversion Ratio Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] Other Real Estate Other Real Estate City Area Code City Area Code Financing Receivable, Allowance for Credit Loss [Table Text Block] Financing Receivable, Allowance for Credit Loss [Table Text Block] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] BusinessAcquisitionEquityInterestIssuedOrIssuableExchangeRatio BusinessAcquisitionEquityInterestIssuedOrIssuableExchangeRatio BusinessAcquisitionEquityInterestIssuedOrIssuableExchangeRatio Affordable Housing Projects and Other [Member] Affordable Housing Projects and Other [Member] Affordable Housing Projects and Other Total Leases Total Leases [Abstract] Total Leases Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Impaired Finance Receivable [Member] Impaired Finance Receivable [Member] Impaired Finance Receivable [Member] Allowance Type [Domain] Allowance Type [Domain] Allowance Type Interest Receivable Interest Receivable Fair Value Hedging [Member] Fair Value Hedging [Member] Summary of Changes in MSR [Table] Servicing Asset at Fair Value, Activity [Table] Defined Benefit Plan, Amortization of Gain (Loss) Defined Benefit Plan, Amortization of Gain (Loss) Equity Securities, FV-NI Equity Securities, FV-NI Equity Securities, FV-NI Disclosures Pertaining to Servicing Assets and Servicing Liabilities [Abstract] Other Liabilities Other Liabilities Goodwill Goodwill Goodwill Lease, Cost [Table Text Block] Lease, Cost [Table Text Block] Held to maturity, number of securities, less than 12 months Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than One Year [Member] Financing Receivable, Modified in Period, Amount Financing Receivable, Modified in Period, Amount Proceeds from Sale of Mortgage Portfolio Proceeds from Sale of Mortgage Portfolio Proceeds from Sale of Mortgage Portfolio Equipment [Member] Equipment [Member] Two Thousand Twenty Three Subordinated Notes [Member] Two Thousand Twenty Three Subordinated Notes [Member] Two Thousand Twenty Three Subordinated Notes Debt Instrument, Maturity Date Month, Year Debt Instrument, Maturity Date Supplemental Cash Flow Information [Abstract] Supplemental Cash Flow Information [Abstract] Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Beginning Balance Ending Balance Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Debt Securities, Available-for-Sale, Amortized Cost Available for Sale, Total debt securities Debt Securities, Available-for-Sale, Amortized Cost Business Combination, Recognized Asset Acquired, Receivable, Current Business Combination, Recognized Asset Acquired, Receivable, Current Other Performance Measure, Amount Other Performance Measure, Amount Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Payments of Debt Issuance Costs Payments of Debt Issuance Costs Financing Receivable, Allowance for Credit Loss, Purchased Seasoned Loan Financing Receivable, Allowance for Credit Loss, Purchased Seasoned Loan Amount of increase in allowance for credit loss for financing receivable from purchased seasoned loan. 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Amortization of Intangible Assets Amortization of Intangible Assets Amortization of Intangible Assets Loan, Mortgage, Held-for-Sale, Fair Value Disclosure Loan, Mortgage, Held-for-Sale, Fair Value Disclosure Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Table Text Block] Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Table Text Block] Business Combination, Control Obtained, Description Business Combination, Control Obtained, Description Exchange [Domain] Exchange [Domain] Debt Securities, Available-for-Sale, Measurement Input Debt Securities, Available-for-Sale, Measurement Input Allowance for Loans Losses and Unfunded Commitments [Member] Allowance for Loans Losses and Unfunded Commitments [Member] Allowance for Loans Losses and Unfunded Commitments Summary of activity in accumulated other comprehensive income (loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Residential Mortgage-Backed Securities 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and other intangibles Finite-Lived Intangible Assets, Net [Abstract] 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] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Statement [Table] Statement [Table] Business Combination, Recognized Asset Acquired, Investment in Debt and Equity Securities, Current Business Combination, Recognized Asset Acquired, Investment in Debt and Equity Securities, Current Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] External Credit Rating, Moody's [Domain] External Credit Rating, Moody's [Domain] Segment Income Statement Data Abstract Segment Reporting Information, Profit (Loss) [Abstract] Loan Pool CRA Investments [Member] Loan Pool CRA Investments [Member] Loan Pool CRA Investments Equity Securities, FV-NI Increase (Decrease) in Debt Securities, Trading, and Equity Securities, FV-NI Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] 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, Securities, Debt Securities Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Fair Value Amendment Flag Amendment Flag Fair Value of Assets Acquired Fair Value of Assets Acquired Schedule of Unrealized Loss on Investments [Table Text Block] Schedule of Unrealized Loss on Investments [Table Text Block] Other Postretirement Benefits Plan [Member] Other Postretirement Benefits Plan [Member] Termination Date Trading Arrangement Termination Date Interest on FHLB Funding Interest on FHLB Funding Interest on FHLB Funding Interest-Bearing Deposits in Banks and Other Financial Institutions Interest-bearing Deposits in Banks and Other Financial Institutions Interest-Bearing Deposits in Banks and Other Financial Institutions Servicing Assets and Servicing Liabilities Risk [Axis] Servicing Assets and Servicing Liabilities Risk [Axis] Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Debt Instrument, Issuance Date Month, Year Debt Instrument, Issuance Date Month, Year Debt Instrument, Issuance Date Month, Year Receivable [Domain] Receivable [Domain] Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Indefinite-Lived Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Indefinite-Lived Operating Lease, Weighted Average Discount Rate, Percent Operating Lease, Weighted Average Discount Rate, Percent Capital Market Fees [Member] Capital Market Fees [Member] Capital market fees. Loans and Finance Receivables [Member] Loans and Finance Receivables [Member] Share-Based Payment Arrangement, Option, Activity [Table Text Block] Share-Based Payment Arrangement, Option, Activity [Table Text Block] Financial Assets Sold under Agreements to Repurchase, Gross Including Not Subject to Master Netting Arrangement Financial Assets Sold under Agreements to Repurchase, Gross Including Not Subject to Master Netting Arrangement Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Shares Outstanding, Basic Interest Rate-Related Instruments - MSRs Hedge Interest Rate-Related Instruments - MSRs Hedge [Member] Interest Rate-Related Instruments - MSRs Hedge Calculations for basic and diluted earnings per common share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Loans Information [Table] Loans Information [Table] Loans Information Share-Based Compensation Arrangement by Share-Based 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Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax 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 Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common Stock, Par or Stated Value Per Share Common Stock, Par or Stated Value Per Share Derivative Instruments and Hedging Activities Disclosures [Line Items] Cash Flow Hedge Impacts on AOCI [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Increase (Decrease) in Fair Value of Foreign Currency Fair Value Hedging Instruments Increase (Decrease) in Fair Value of Foreign Currency Fair Value Hedging Instruments Increase (Decrease) in Fair Value of Foreign Currency Fair Value Hedging Instruments Equity Securities, FV-NI, Realized Gain (Loss) Equity Securities, FV-NI, Realized Gain (Loss) Occupancy, Net Occupancy, Net Occupancy, Net Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Subsequent Events Subsequent Events [Text Block] Insider Trading Arrangements [Line Items] Foreign Currency Contracts, Liability, Fair Value Disclosure Foreign Currency Contracts, Liability, Fair Value Disclosure Financial Asset, Not Past Due [Member] Financial Asset, Not Past Due [Member] Equity Securities [Member] Equity Securities [Member] FHLB Advances, Prepayment Penalty FHLB Advances, Prepayment Penalty FHLB Advances, Prepayment Penalty Noninterest Income In Scope of Topic 606 Noninterest Income In Scope of Topic 606 Noninterest Income In Scope of Topic 606 Liabilities, Total Liabilities Liabilities Accumulated Other Comprehensive Income (Loss) [Roll Forward] Accumulated Other Comprehensive Income (Loss) [Roll Forward] Accumulated Other Comprehensive Income (Loss) [Roll Forward] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Increase (Decrease) in Obligation, Pension Benefits Increase (Decrease) in Obligation, Pension Benefits Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements Interest Rate Lock Commitments [Member] Interest Rate Lock Commitments [Member] Interest Rate Lock Commitments [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] A portion of total depreciation Occupancy expense A portion of total depreciation Occupancy expense A portion of total depreciation Occupancy expense Payments for (Proceeds from) Loans and Leases Payments for (Proceeds from) Loans and Leases Deposits, Savings Deposits Deposits, Savings Deposits Offsetting Assets [Line Items] Offsetting Assets [Line Items] Derivative Collateral Right to Reclaim Collateral Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset Derivative Liability Notional Amount, Terminated Derivative Liability Notional Amount, Terminated Derivative Liability Notional Amount, Terminated Stock Issued During Period, Value, New Issues Stock Issued During Period, Value, New Issues Shares issued in connection with acquisition Shares issued in connection with acquisition Shares issued in connection with acquisition Consolidation Items [Axis] Consolidation Items [Axis] Lease, Liability, to be Paid, Due Year Three Lease, Liability, to be Paid, Due Year Three Lease, Liability, to be Paid, Due Year Three Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities Debt Securities, Available-for-Sale Available for Sale, Total debt securities Debt Securities, Available-for-Sale Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member]