Schedule of short-term debt Schedule of Short-Term Debt [Table Text Block] Commodities contracts Derivatives hedging commodity price risk Commodity Contract [Member] Less: Cash collateral applied Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash, Offset Against Derivative Asset Award Timing Predetermined Award Timing Predetermined [Flag] Entity File Number Entity File Number Net benefit (expense) included in Noninterest income Noninterest Income, Net Benefit [Member] Noninterest Income, Net Benefit Additional Paid-in Capital Additional Paid-in Capital [Member] Reclassification of net (gains) losses to earnings Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Tabular List, Table Tabular List [Table Text Block] Indirect expenses Noninterest Expense, Indirect Expenses, Adjusted Noninterest Expense, Indirect Expenses, Adjusted Assets and liabilities measured at fair value Fair Value, by Balance Sheet Grouping [Table Text Block] Total debt securities available for sale, at fair value Debt Securities [Member] Other Other Expenses Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] NONINTEREST INCOME Revenue from Contract with Customer [Text Block] Education Student Loan [Member] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Dividends paid to preferred stockholders Dividends Paid Payments of Ordinary Dividends, Preferred Stock and Preference Stock Recoveries Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Derivative Assets Derivative Asset, Including Not Subject to Master Netting Arrangement, after Offset and Deduction [Abstract] Amortized Cost, Debt securities available for sale, Maturity After 10 Years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost Less: Cash collateral applied Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset Adjustment to Compensation, Amount Adjustment to Compensation Amount Other derivative contracts Other Derivative Contracts [Member] Other Derivative Contracts [Member] Unamortized deferred issuance costs and/or discounts Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Net (increase) decrease in Other assets Increase (Decrease) in Other Operating Assets Consolidation Consolidation, Policy [Policy Text Block] Employee Stock Option Share-Based Payment Arrangement, Option [Member] Derivative contracts used to hedge equity price risk Price Risk Derivative [Member] Dividends declared - common stock Dividends, Common Stock, Cash TOTAL STOCKHOLDERS’ EQUITY Beginning balance Ending balance Equity, Attributable to Parent Measurement Frequency [Axis] Measurement Frequency [Axis] Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-Sale [Table] Insider Trading Policies and Procedures [Line Items] Amortized Cost, Debt securities held to maturity, Total Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date Common stock, authorized (in shares) Common Stock, Shares Authorized Assets Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Special Purpose Entities Special Purpose Entities [Member] Special Purpose Entities [Member] LIABILITIES AND STOCKHOLDERS’ EQUITY: Liabilities and Equity [Abstract] Commercial letters of credit Commercial Letter of Credit [Member] A document typically issued by a financial institution which acts as a guarantee of payment to a beneficiary, or as the source of payment for a commercial transaction (for example, wiring funds to a foreign exporter if and when specified merchandise is accepted pursuant to the terms of the letter of credit). Cover [Abstract] Cover [Abstract] Maximum Maximum [Member] Share repurchase excise tax Treasury Stock, Value, Acquired, Cost Method, Excise Tax Treasury Stock, Value, Acquired, Cost Method, Excise Tax Total Debt Securities, Available-for-Sale, Unrealized Loss Position Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Losses on assets and liabilities measured on a nonrecurring basis included in earnings Fair Value, Measured On Nonrecurring Basis, Gain (Loss) Included In Earnings [Table Text Block] Tabular disclosure of gains (losses) on assets and liabilities measured at fair value on a nonrecurring basis and recorded in earnings. Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, Credit Quality Indicator [Table] Series B Series B Preferred Stock [Member] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Interest-bearing deposits in banks Interest Income, Deposits with Financial Institutions Weighted-Average Term Extension (in Months) Financing Receivable, Modified, Weighted Average Term Increase from Modification Income before income tax expense Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Common stock: Common Stock, Number of Shares, Par Value and Other Disclosure [Abstract] Converted to Term Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Net unrealized gains (losses) arising during the period Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Other intangible assets Other Intangible Assets, Net Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Total interest expense Interest Expense, Operating Amortized Cost, Debt securities held to maturity, Maturity of 1 Year or Less Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Year One Letters of credit Letter of Credit [Member] Document Fiscal Period Focus Document Fiscal Period Focus Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Fair value option Fair Value Option, Disclosures [Table Text Block] Award Timing Method Award Timing Method [Text Block] Loans and leases, nonaccrual Financing Receivable, Excluding Accrued Interest, Nonaccrual Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss Award Type Award Type [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Parent Company Parent Company [Member] Changes in fair value Servicing Asset at Fair Value, Other Changes in Fair Value Mortgage Banking [Abstract] Mortgage Banking [Abstract] Investment, Name [Domain] Investment, Name [Domain] Trading Symbol Trading Symbol Sensitivity analysis, basis spread Sensitivity Analysis of Fair Value Inputs, Basis Spread Sensitivity Analysis of Fair Value Inputs, Basis Spread Available-for-sale Securities and Held-to-maturity Securities, Debt Maturities [Abstract] [Abstract] Available-for-sale Securities and Held-to-maturity Securities, Debt Maturities [Abstract] [Abstract] Available-for-sale Securities and Held-to-maturity Securities, Debt Maturities [Abstract] [Abstract] Long-term borrowed funds Interest Expense, Long-Term Debt Share-based compensation plans (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Entity Address, City or Town Entity Address, City or Town 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 Net increase (decrease) in Short-term borrowed funds Proceeds from (Repayments of) Short-Term Debt Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Mortgage loans collateralized by OREO Mortgage Loans Collateralized By OREO Recorded investment in financing receivables that are on nonaccrual status and are collateralized by land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement as of the balance sheet date. Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Total fair value of debt securities, Maturity of 5-10 Years Available-for-sale Securities and Held-to-maturity Securities, Debt Maturities, After Five Through Ten Years, Fair Value Fair value of available for sale and held-to-maturity debt securities maturing in the sixth through tenth rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Short-term borrowed funds Interest Expense, Short-Term Borrowings Entity Emerging Growth Company Entity Emerging Growth Company 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] Unfunded loan commitment Unfunded Loan Commitment [Member] Amounts recognized in noninterest income Derivative, Gain (Loss) on Derivative, Net 5.253% fixed/floating-rate senior unsecured notes, due March 2031 5.253% Fixed Rate Subordinated Debt, Due March 2031 [Member] 5.253% Fixed Rate Subordinated Debt, Due March 2031 Total noninterest income Noninterest income Noninterest Income Risk participation agreements, average term Risk Participation Agreements, Average Term Average period covered by risk participation contracts in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Commercial Banking Commercial Banking Segment [Member] Commercial Banking [Member] Common stock, outstanding (in shares) Common Stock, Shares, Outstanding Defined benefit plans: Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent [Abstract] Gross Unrealized Gains Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss NONINTEREST EXPENSE: Noninterest Expense [Abstract] Components of revenue from contracts with customers Disaggregation of Revenue [Table Text Block] Cash and due from banks Cash and Due from Banks Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Amounts capitalized Servicing Asset At Fair Value, Amount Capitalized Servicing Asset At Fair Value, Amount Capitalized Decline in fair value from 10% adverse change Sensitivity Analysis Of Fair Value, Fair Value Method, Transferor's Interests In Transferred Financial Assets, Impact of 0.5 Percent Adverse Change In Prepayment Speed Sensitivity Analysis Of Fair Value, Fair Value Method, Transferor's Interests In Transferred Financial Assets, Impact of 0.5 Percent Adverse Change In Prepayment Speed 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] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Weighted-Average Interest Rate Reduction Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification Pledged Status [Domain] Pledged Status [Domain] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Investment securities Interest and Dividend Income, Securities, Operating Income tax expense Income tax expense Income tax expense Income Tax Expense (Benefit) Other assets Other Assets Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Mortgage servicing rights, measurement input Servicing Asset, Measurement Input Principal balance Unsecured Debt Preferred stock, issued (in shares) Preferred Stock, Shares Issued Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Derivatives designated as hedging instruments: Designated as Hedging Instrument [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Hedging Relationship [Axis] Hedging Relationship [Axis] Other retail Consumer, Other Retail [Member] Consumer, Other Retail [Member] Long-term Purchase Commitment [Table] Long-Term Purchase Commitment [Table] Other tax benefits recognized Income Tax Expense, Other Tax Benefits [Member] Income Tax Expense, Other Tax Benefits Letter of credit and loan fees Letter Of Credit And Loan Fees Letter Of Credit And Loan Fees 2.638% fixed-rate subordinated debt, due September 2032 2.638% Subordinated Debt, Due September 2032 [Member] 2.638% Subordinated Debt, Due September 2032 [Member] Notes Payable, Other Payables Notes Payable, Other Payables [Member] Other Income and Expenses [Abstract] Other Income and Expenses [Abstract] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [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] Less: Preferred stock dividends Preferred Stock Dividends, Income Statement Impact Weighted average life (years) Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Weighted Average Life Total revenue from other sources Noninterest Income, Other Operating Income Equity securities, at cost, fair value Other assets, fair value Equity Securities, FV-NI, Current, Other Equity Securities, FV-NI, Current, Other Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Net change due to operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Other income Noninterest Income, Other Income [Member] Noninterest Income, Other Income Tax-Advantaged Investments Tax-Advantaged Investments [Member] Tax-Advantaged Investments Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Proceeds from sales of debt securities available for sale Proceeds from Sale of Debt Securities, Available-for-Sale Debt securities available for sale, at fair value (including $119 and $108 pledged to creditors, respectively) Fair Value Debt securities available for sale Debt Securities, Available-for-Sale, Excluding Accrued Interest Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Net interest income Net interest income Interest Income (Expense), Operating Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Derivative liabilities Total derivative liabilities Derivative Liability, Subject to Master Netting Arrangement, before Offset Interest income on direct financing lease Direct Financing Lease, Interest Income Equity Components [Axis] Equity Components [Axis] Year four Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Number of segments Number of Reportable Segments Commercial real estate Commercial Real Estate [Member] Total amortized cost of debt securities, Total Available-for-sale Securities and Held-to-maturity Securities, Debt Maturities, Amortized Cost Amount of investment in available for sale and held-to-maturity debt securities with a single maturity date, after other than temporary (OTTI) accretion. Entity Address, State or Province Entity Address, State or Province Substandard Accrual Substandard [Member] Total interest income Interest and Dividend Income, Operating Interest-bearing cash and due from banks Interest-Bearing Cash And Due From Banks For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing cash in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet. Financial Asset, Period Past Due [Domain] Financial Asset, Aging [Domain] Special Mention Special Mention [Member] Dividends Declared Dividends, Common Stock Renewable Energy Renewable Energy Investments [Member] Renewable Energy Investments Other serviced loans Servicing Asset Net loans and leases, fair value Loans Receivable, Fair Value Disclosure Available borrowing capacity Debt Instrument, Unused Borrowing Capacity, Amount Other Other Long-term Debt [Member] Other Long-term Debt [Member] Individual: Individual [Axis] Dividends paid to common stockholders Dividends Paid Payments of Ordinary Dividends, Common Stock Net change in Loans held for sale Increase (Decrease) in Loan, Held-for-Sale Entities [Table] Entities [Table] Principal Forgiveness Principal Forgiveness [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Repayments of long-term borrowed funds Repayments of Long-Term Debt Wealth fees Wealth Fees Income from services rendered by trust or wealth management departments acting in a fiduciary capacity. This may include fees earned for (1) acting as an agent for fiduciary placement and loans and (2) custody or investment advisory services. This item excludes commissions and fees received for the accumulation or disbursement of funds deposited to Individual Retirement or Keogh plan accounts when such are not handled by the reporting entity's trust department Entity Interactive Data Current Entity Interactive Data Current Letters of Credit [Abstract] Letters of Credit [Abstract] Letters of Credit [Abstract] Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Financing Receivable, Troubled Debt Restructuring [Line Items] Financing Receivable, Modified [Line Items] Net Income (Loss) Attributable To Parent, Net Benefit Net Income (Loss) Attributable To Parent, Net Benefit [Member] Net Income (Loss) Attributable To Parent, Net Benefit INTEREST INCOME: Interest and Dividend Income, Operating [Abstract] Total noninterest expense Noninterest Expense Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Payment Delay Payment Deferral [Member] CREDIT QUALITY AND THE ALLOWANCE FOR CREDIT LOSSES Allowance for Credit Losses [Text Block] Deposits Interest Expense, Deposits NONINTEREST INCOME: Noninterest Income [Abstract] Education Loans Education Loans [Member] Education Loans Other loans held for sale Other Loans Receivable Held-For-Sale, Amount The amount of other loans receivable that will be sold to other entities. Entity Central Index Key Entity Central Index Key PEO Name PEO Name Total revenue Revenues 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] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Schedule of classes of loans and leases, amortized cost basis by credit quality indicator Financing Receivable Credit Quality Indicators [Table Text Block] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Total comprehensive income (loss): Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Noninterest-bearing Noninterest-Bearing Deposit Liabilities Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Fair Value, Debt securities held to maturity, Maturity of 5-10 Years Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years Schedule of other operating expense Schedule of Other Operating Cost and Expense, by Component [Table Text Block] Schedule of derivative instruments in consolidated balance sheets Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Customer foreign exchange contracts Foreign Exchange Contract, Customer [Member] Foreign Exchange Contract, Customer [Member] Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Class of Stock [Domain] Class of Stock [Domain] Preferred stock Dividends, Preferred Stock [Abstract] Cumulative amount of fair value hedging adjustments included in the carrying amount of the hedged items Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease) Wealth fees Wealth Fees [Member] Wealth Fees Total fair value of debt securities, Total Available-for-sale Securities and Held-to-maturity Securities, Debt Maturities, Fair Value Fair value of investment in held-to-maturity and available for sale debt securities with a single maturity date. Preferred stock: Preferred Stock, Number of Shares, Par Value and Other Disclosure [Abstract] Education Student Loans Serviced For Others [Member] Student Loans Serviced For Others [Member] 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 Accumulated Other Comprehensive Income (Loss) Total AOCI AOCI Attributable to Parent [Member] Converted to Term Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Unfunded lending commitments [Roll Forward] Off-Balance-Sheet, Credit Loss, Liability [Roll Forward] Residential mortgage loans held for sale Residential loans held for sale Residential Loans Held-for-sale [Member] Residential Loans Held-for-sale [Member] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] DERIVATIVES Derivative Instruments and Hedging Activities Disclosure [Text Block] Investment securities: Proceeds from Sale and Maturity, Debt Security, Trading, and Equity Security, FV-NI, Held-for-Investment [Abstract] Schedule of preferred stock Schedule of Stock by Class [Table Text Block] Fair Value as of Grant Date Award Grant Date Fair Value Equity Securities, Amortized Cost Equity Securities, FV-NI, Cost Fair value: Available-for-sale Securities and Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract] Available-for-sale Securities and Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract] Year five Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year Financing Receivable, Modified, Subsequent Default [Line Items] Financing Receivable, Modified, Subsequent Default [Line Items] Schedule of long-term borrowed funds Schedule of Long-Term Debt Instruments [Table Text Block] Salaries and employee benefits Labor and Related Expense Other/non-agency Mortgage-Backed Securities, Issued by Private Enterprises [Member] Document Quarterly Report Document Quarterly Report Less than 12 Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Bank-owned life insurance income Bank Owned Life Insurance Income Long-term borrowed funds, fair value Long-Term Debt, Fair Value Fair value measurement inputs and valuation techniques Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] Schedule of Available-for-sale and Held-to-maturity Securities [Line Items] Schedule of Available-for-sale and Held-to-maturity Securities [Line Items] [Line Items] for Schedule of Available-for-sale and Held-to-maturity Securities [Table] Schedule of nonaccrual loans and leases and loans accruing and 90 days or more past due Financing Receivable, Nonaccrual [Table Text Block] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Short-term borrowed funds Short-Term Borrowed Funds Short-Term Borrowed Funds Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Service charges and fees Service Charges and Fees [Member] Service Charges and Fees [Member] Non-PEO NEO Non-PEO NEO [Member] Employee stock purchase plan Stock Issued During Period, Value, Employee Stock Purchase Plan Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax All Award Types Award Type [Domain] Amortization of actuarial (gain) loss to earnings Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] Pre-tax net gains (losses) recognized in OCI Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Losses on assets measured at fair value Fair Value, Measurement with Unobservable Inputs Reconciliation, Nonrecurring Basis, Asset, Gain (Loss) Included in Earnings Amount of unrealized (holding) gain (loss) which is included in the statement of income (or changes in net assets) related to those assets still held at the reporting date for which fair value is measured on a nonrecurring basis. Equity Awards Adjustments Equity Awards Adjustments [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Compensation Amount Outstanding Recovery Compensation Amount Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Foreign exchange contracts Derivatives hedging foreign exchange risk Foreign Exchange Contract [Member] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Total equity securities, at cost, Amortized Cost Other assets, carrying value Equity Securities, FV-NI, Cost, Other Equity Securities, FV-NI, Cost, Other Financing Receivable, Past Due [Line Items] Financing Receivable, Past Due [Line Items] Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Total fair value of debt securities, Maturity After 10 Years Available-for-sale Securities and Held-to-maturity Securities, Debt Maturities, After Ten Years, Fair Value Fair value of available for sale and held-to-maturity debt securities maturing after the tenth rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Long-term Purchase Commitment [Line Items] Long-Term Purchase Commitment [Line Items] Financial Instruments [Domain] Financial Instruments [Domain] Schedule of effect of cash flow hedges on net income and stockholders' equity Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Reclassification of net (gains) losses to earnings Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Pledging Purpose [Domain] Pledging Purpose [Domain] Minimum Minimum [Member] Net interest income after provision (benefit) for credit losses Interest Income (Expense), after Provision for Loan Loss Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Company Selected Measure Name Company Selected Measure Name Schedule of outstanding off balance sheet arrangements Schedule of Fair Value, off-Balance-Sheet Risks [Table Text Block] BORROWED FUNDS Debt Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Collateral-dependent loans Loans, Collateral Dependent, Impaired Fair value of impaired collateral-dependent loans net of impairments. Amortized Cost, Debt securities held to maturity, Maturity After 10 Years Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 10 Collateral Held [Domain] Collateral Held [Domain] Profit (loss) before provision for credit losses Profit (Loss) Before Provision for Credit Losses Sum of net interest income (expense) and nonoperating income or expense before provision for credit losses, income or loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest. Capital markets fees Capital Markets Fees Capital market fee income earned including (for example): corporate syndication, referral, merger and acquisition fees, and other capital market fee income COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Diluted (in Shares) Weighted-average common shares outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Equity securities, at fair value Equity Securities, FV-NI, Excluding Net Asset Value Equity Securities, FV-NI, Excluding Net Asset Value Derivative [Table] Derivative [Table] Entity Small Business Entity Small Business Other operating expense Other Cost and Expense, Operating Preferred stock, outstanding (in shares) Preferred Stock, Shares Outstanding Document Transition Report Document Transition Report Schedule of other serviced loans Schedule Of Other Serviced Loans [Table Text Block] Schedule Of Other Serviced Loans [Table Text Block] Cash-related financial instruments not recorded at fair value in the consolidated balance sheet Cash Related Financial Instruments Cash Related Financial Instruments Underlying Securities Award Underlying Securities Amount Gains Debt Securities, Available-for-Sale, Realized Gain Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date Commitment amount Contractual Obligation Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Commercial loans held for sale Commercial Real Estate Loans Held-for-sale [Member] Commercial Real Estate Loans Held-for-sale [Member] Document Type Document Type Level 3 Fair Value, Inputs, Level 3 [Member] EARNINGS PER SHARE Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Marketing Marketing and Advertising Expense Additional paid-in capital Additional Paid in Capital Product and Service [Axis] Product and Service [Axis] Within the Revolving Period Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff Revenue from contracts with customers Revenue from Contract with Customer, Excluding Assessed Tax Card fees Fees And Commissions, Credit And Debit Cards1 Fees And Commissions, Credit And Debit Cards1 Tax Credit Program [Axis] Tax Credit Program [Axis] Tax Credit Program Statistical Measurement [Axis] Statistical Measurement [Axis] Sales of loans Proceeds from Sale of Finance Receivables Credit Score, FICO [Domain] Credit Score, FICO [Domain] Year two Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff Interest and fees on loans and leases Interest and Fee Income, Loan and Lease, Held-in-Portfolio Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Current Financial Asset, 1 to 29 Days Past Due [Member] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Fair Value, Debt securities available for sale, Maturity of 1-5 Years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value Net income available to common stockholders Net income available to common stockholders Net Income (Loss) Available to Common Stockholders, Basic Mortgage banking fees Fees and Commissions, Mortgage Banking and Servicing Financial standby letters of credit Financial Standby Letter of Credit [Member] Entity Information [Line Items] Entity Information [Line Items] Total other comprehensive income (loss), net Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Interest Rate Reduction and Term Extension Extended Maturity and Interest Rate Reduction [Member] Other liabilities Other Liabilities, Fair Value Disclosure Schedule of effect of derivative Instruments on net income Derivative Instruments, Gain (Loss) [Table Text Block] Level 1 Fair Value, Inputs, Level 1 [Member] Net gain on sale of assets Gain (Loss) on Disposition of Assets Beginning balance (in shares) Ending balance (in shares) Shares, Outstanding Diluted earnings (in dollars per share) Diluted (in dollars per share) Earnings Per Share, Diluted Deposit insurance Federal Deposit Insurance Corporation Premium Expense Nonprepayable Fixed-Rate Afs Securities Portfolio Nonprepayable Fixed-Rate Afs Securities Portfolio [Member] Nonprepayable Fixed-Rate Afs Securities Portfolio Non-cash items: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Accumulated Other Comprehensive Income (Loss), 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 Dividends declared - preferred stock Dividends, Preferred Stock, Cash Loans held for sale (includes $917 and $1,065, respectively, measured at fair value) Total loans held for sale Loans held for sale Aggregate Fair Value Financing Receivable, Held-for-Sale Increase to allowance for credit loss Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Period Increase (Decrease) Commercial and industrial Commercial Loan [Member] Treasury stock (in shares) Treasury Stock, Common, Shares Consolidation Items [Domain] Consolidation Items [Domain] Short-term investments Short Term Investments, Fair Value Disclosure Short Term Investments, Fair Value Disclosure Federal Home Loan Bank Advances and Letters of Credit Federal Home Loan Bank Advances and Letters of Credit [Member] Borrowings from letters of credit and the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and also in times of liquidity shortages. The member institution executes a promissory note, which is generally collateralized by government securities to the Federal Reserve or loans. Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Variable Interest Entity, Not Primary Beneficiary Variable Interest Entity, Not Primary Beneficiary [Member] VARIABLE INTEREST ENTITIES Equity Method Investments and Joint Ventures Disclosure [Text Block] Schedule of proportionally amortized tax credit investments Schedule Of Proportionally Amortized Tax Credit Investments [Table Text Block] Schedule Of Proportionally Amortized Tax Credit Investments Cumulative basis adjustment Debt Securities, Available-for-Sale, Cumulative Basis Adjustment Debt Securities, Available-for-Sale, Cumulative Basis Adjustment Term Extension Extended Maturity [Member] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Commitments to extend credit Residential loan commitments Commitments to Extend Credit [Member] Fair Value, Debt securities held to maturity, Total Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date TBA contracts TBA Contract [Member] TBA Contract [Member] 740-799 FICO Score, 740 To 799 [Member] FICO Score, 740 To 799 [Member] Net unrealized gains (losses) on AFS securities arising during the period OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Subsidiaries Subsidiaries [Member] Fair Value, Debt securities available for sale, Maturity of 5-10 Years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years, Fair Value Loans and leases Total Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss MSR loans Securities Sold under Agreements to Repurchase Schedule of unrealized loss on investments Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Expiration Date Trading Arrangement Expiration Date Portfolio level basis adjustments excluded from amortized cost Hedged Asset, Fair Value Hedge, Portfolio Layer Method, Hedged Layer, Fair Value, Cumulative Increase (Decrease), Excluded from Amortized Cost Other Commitments [Domain] Other Commitments [Domain] Net increase (decrease) in Other liabilities Increase (Decrease) in Other Operating Liabilities Allowance for credit loss recognized Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest Premises and equipment, net Property, Plant and Equipment, Net Numerator (basic and diluted): Net Income (Loss) Attributable to Parent [Abstract] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Entity Current Reporting Status Entity Current Reporting Status 6.645% fixed/floating-rate senior unsecured notes, due April 2035 6.645% Subordinated Debt, Due April 2035 [Member] 6.645% Subordinated Debt, Due April 2035 Receivables [Abstract] Receivables [Abstract] Derivative [Line Items] Derivative [Line Items] Capital expenditures Payments for (Proceeds from) Productive Assets Series I Series I Preferred Stock [Member] Series I Preferred Stock Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] Collateral Held [Axis] Collateral Held [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Pull through rate Measurement Input, Pull Through Rate [Member] Measurement Input, Pull Through Rate [Member] Total net derivatives presented in the Consolidated Balance Sheets Derivative Liability, Subject to Master Netting Arrangement, after Offset 5.641% fixed-rate reset subordinated debt, due May 2037 Subordinated Debt, 5.641% Fixed Rate, Due May 2037 [Member] Subordinated Debt, 5.641% Fixed Rate, Due May 2037 Financial Instrument [Axis] Financial Instrument [Axis] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Executive Category: Executive Category [Axis] 12 Months or Longer Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Proceeds from issuance of long-term borrowed funds Proceeds from Issuance of Long-Term Debt Current Fiscal Year End Date Current Fiscal Year End Date Tax Credit Program [Domain] Tax Credit Program [Domain] Tax Credit Program [Domain] Less than 12 Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Total deposits Deposits, carrying value Deposits Schedule of loans and leases Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Outside services Professional Fees Commercial loans held for sale Commercial and Commercial Real Estate Loans Held-for-sale [Member] Commercial and Commercial Real Estate Loans Held-for-sale [Member] Other operating expense Other Noninterest Expense Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Loan Restructuring Modification [Axis] Loan Restructuring Modification [Axis] Pass Pass [Member] Derivatives hedging interest rate risk Interest Rate Contract [Member] Amounts related to interest settlements on derivatives Change in Unrealized Gain (Loss) on Settlements on Derivatives Change in Unrealized Gain (Loss) on Settlements on Derivatives Cash proceeds from residential mortgage loans sold with servicing retained Cash Flows Between Transferor and Transferee, Proceeds from New Transfers Amount of Principal Forgiven Financing Receivable, Excluding Accrued Interest, Modified, Increase (Decrease) from Modification Total Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Assets and liabilities measured on recurring basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Equity Securities, Fair Value Equity securities excluded from investments Equity Securities, FV-NI, Current Nonaccrual Financial Asset, Nonaccrual [Member] Financial Asset, Nonaccrual Share-based awards excluded from diluted earnings per share computation (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Weighted-average common shares outstanding: Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Interest-bearing Interest-Bearing Deposit Liabilities Other Commitments [Table] Other Commitments [Table] Net change due to financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Measure: Measure [Axis] Depository share interest percentage Preferred Stock, Depositary Share Interest Percentage Preferred Stock, Depositary Share Interest Percentage Decline in fair value from 10% adverse change Sensitivity Analysis Of Fair Value, Fair Value Method, Transferor's Interests In Transferred Financial Assets, Impact of 0.5 Percent Adverse Change Option Adjusted Spread Sensitivity Analysis Of Fair Value, Fair Value Method, Transferor's Interests In Transferred Financial Assets, Impact of 0.5 Percent Adverse Change Option Adjusted Spread Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation and Significant Accounting Policies [Text Block] Net actuarial gain (loss) arising during the period Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] Debt Securities, Held-to-Maturity, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract] Debt Securities, Held-to-Maturity, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract] Retail Residential Mortgages Consumer Portfolio Segment [Member] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Fair Value, Debt securities held to maturity, Maturity of 1 Year or Less Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Rolling within One Year Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Total net derivatives presented in the Consolidated Balance Sheets Derivative Asset, Subject to Master Netting Arrangement, after Offset Entity Tax Identification Number Entity Tax Identification Number Discounted Cash Flow Valuation Technique, Discounted Cash Flow [Member] Schedule of fair value assumptions used to estimate the value of Mortgage Servicing Rights Schedule of Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets [Table Text Block] Year four Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff Schedule of variable interest entities Schedule of Variable Interest Entities [Table Text Block] Common stock, issued (in shares) Common Stock, Shares, Issued Loans held for sale, fair value Other Loans Receivable Held-for-sale, Fair Value Disclosure Fair value portion of other loans receivable held-for-sale. Allowance for Loan and Lease Losses [Roll Forward] Allowance for Loan and Lease Losses [Roll Forward] Transfer of loans from loans held for investment to LHFS Loan and Lease, Transfer from Held-in-Portfolio to Held-for-Sale Federal agencies and U.S. government sponsored entities Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Aggregate Fair Value Greater (Less) Than Aggregate Unpaid Principal Fair Value, Option, Aggregate Differences, Loans and Long-Term Receivables Series E Series E Preferred Stock [Member] Other Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Security Exchange Name Security Exchange Name Purchases of loans Payments to Acquire Finance Receivables Schedule of securities held Securities [Table Text Block] Tabular disclosure of available-for-sale, held to maturity, and other investment securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, and amortized cost basis. SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] Total mortgage-backed securities Mortgage-backed securities Collateralized Mortgage-Backed Securities [Member] Dividends Declared Dividends, Preferred Stock Pledging Purpose [Axis] Pledging Purpose [Axis] Home Equity Loan and Residential Mortgages Home Equity Loan And Residential Mortgages [Member] Home Equity Loan And Residential Mortgages [Member] Asset Class [Domain] Asset Class [Domain] Changes in fair value recognized in earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Financing Receivable, Modified, Subsequent Default [Table] Financing Receivable, Modified, Subsequent Default [Table] Statement [Line Items] Statement [Line Items] Total average assets Assets, Average Outstanding Carrying amount of hedged assets Hedged Asset, Fair Value Hedge Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Common Stock Common Stock [Member] Accrued interest receivable on debt securities Debt Securities, Interest Receivable Debt Securities, Interest Receivable Other short-term borrowed funds Other Short-Term Borrowings Net change in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Dilutive common shares: share-based awards (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment MSRs Servicing Asset at Fair Value, Amount [Roll Forward] Statistical Measurement [Domain] Statistical Measurement [Domain] Short-term borrowed funds Short-Term Debt, Fair Value Asset Class [Axis] Asset Class [Axis] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Interest rate contracts Interest rate swap Interest Rate Swap [Member] Bank-owned life insurance Bank Owned Life Insurance OTHER OPERATING EXPENSE Other Income and Other Expense Disclosure [Text Block] Total amortized cost of debt securities, Maturity of 1 Year or Less Available-for-sale Securities and Held-to-maturity Securities, Debt Maturities, Within One Year, Amortized Cost Amount of investment in available for sale and held-to-maturity debt securities maturing in the next fiscal year following the latest fiscal year. 5.299% fixed-reset subordinated notes, due January 2036 5.299% Fixed-Reset Subordinated Notes, Due January 2036 [Member] 5.299% Fixed-Reset Subordinated Notes, Due January 2036 Schedule of dividends Dividends Declared [Table Text Block] Total allowance for credit losses, end of period Financing Receivable, Allowance For Credit Loss, Excluding Accrued Interest And Off-Balance-Sheet, Credit Loss, Liability Financing Receivable, Allowance For Credit Loss, Excluding Accrued Interest And Off-Balance-Sheet, Credit Loss, Liability Loans and leases, nonaccrual with no related ACL Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance Pledged Status [Axis] Pledged Status [Axis] Less than 620 FICO Score, Less Than 620 [Member] FICO Score, Less Than 620 [Member] Gross Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Basic earnings (in dollars per share) Basic (in dollars per share) Earnings Per Share, Basic Dividends declared per share of preferred stock (in usd per share) Preferred Stock, Dividends Per Share, Declared Trailing commission income Contract with Customer, Liability, Change in Timeframe, Performance Obligation Satisfied, Revenue Recognized Weighted average constant prepayment rate Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed Schedule of segment reporting information Schedule of Segment Reporting Information, by Segment [Table Text Block] Interest and fees on loans held for sale Interest and Fee Income, Loan, Mortgage, Held-for-Sale Short-term borrowed funds Total short-term borrowed funds Short-Term Debt Deposits, fair value Deposits, Fair Value Disclosure Gross Unrealized Gains Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Measurement Input Type [Domain] Measurement Input Type [Domain] Fair value of assets and liabilities measured on a nonrecurring basis Fair Value Measurements, Nonrecurring [Table Text Block] Charge-offs Total Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Servicing asset at fair value Schedule of Servicing Assets at Fair Value [Table Text Block] Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts and Financing Receivables [Table] Net unrealized gains (losses), net Other comprehensive income (loss) before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Aggregate Unpaid Principal Fair Value, Option, Loans Held As Assets, Aggregate Unpaid Principal The aggregate unpaid principal balance of loans measured at fair value. Share-based compensation Share-Based Payment Arrangement, Expense Hedging Designation [Domain] Hedging Designation [Domain] TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity Defined benefit plans Defined Benefit Plans Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value [Abstract] Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value [Abstract] Reclassification from AOCI, net Amounts reclassified from AOCI to earnings Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Schedule of Equity Method Investments [Table] Equity Method Investment [Table] Derivatives hedging residential loan commitments and mortgage loans held for sale, at fair value Forward Contracts [Member] Education, commercial and industrial, and commercial real estate loans Education, Commercial And Industrial, Commercial Real Estate Loans [Member] Education, Commercial And Industrial, Commercial Real Estate Loans Treasury Stock, at Cost Treasury Stock, Common [Member] Year one Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year Pay vs Performance Disclosure [Line Items] Collateralized loan obligations Collateralized Debt Obligations [Member] 90+ Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Preferred stock, liquidation preference per share (in dollars per share) Preferred Stock, Liquidation Preference Per Share LIABILITIES: Liabilities [Abstract] Total liabilities Financial Liabilities Fair Value Disclosure Mortgage banking fees Mortgage Banking Fees [Member] Mortgage Banking Fees [Member] 620-679 FICO Score, 620 To 679 [Member] FICO Score, 620 To 679 [Member] Net charge-offs Net charge-offs Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) Automobile Automobile Loan [Member] 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] Hedged items Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge Schedule of Variable Interest Entities [Table] Variable Interest Entity [Table] Year three 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 to year five Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff 4.192% fixed/floating-rate senior unsecured notes, due January 2029 4.192% Fixed/Floating-Rate Senior Unsecured Notes, Due January 2029 [Member] 4.192% Fixed/Floating-Rate Senior Unsecured Notes, Due January 2029 Total comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Measurement Input Type [Axis] Measurement Input Type [Axis] Held-to-maturity, zero expected credit loss, percent of portfolio Debt Securities, Held To Maturity, Zero Expected Credit Loss, Percent Of Portfolio Debt Securities, Held To Maturity, Zero Expected Credit Loss, Percent Of Portfolio Name Measure Name Fair Value, Debt securities available for sale, Maturity of 1 Year or Less 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 Secured Debt Secured Debt [Member] Total other comprehensive income (loss), before tax Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Net increase (decrease) in Deposits Increase (Decrease) in Deposits Proceeds from maturities and paydowns of debt securities available for sale Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Class of Stock [Line Items] Class of Stock [Line Items] Financing receivable, modified, subsequent default Financing Receivable, Modified, Subsequent Default [Table Text Block] Comprehensive income (loss) Comprehensive Income (Loss) [Table Text Block] Long-term borrowed funds Long-term borrowed funds Long-Term Debt TOTAL ASSETS Assets Financing Receivable, Credit Quality Indicator [Line Items] Financing Receivable, Credit Quality Indicator [Line Items] OPERATING ACTIVITIES Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Decline in fair value from 20% adverse change Sensitivity Analysis Of Fair Value, Fair Value Method, Transferor's Interests In Transferred Financial Assets, Impact Of 1 Percent Averse Change In Prepayment Speed Sensitivity Analysis Of Fair Value, Fair Value Method, Transferor's Interests In Transferred Financial Assets, Impact Of 1 Percent Averse Change In Prepayment Speed Amortized Cost, Debt securities available for sale, Maturity of 1-5 Years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost Variable Interest Entity Variable Interest Entity [Line Items] Credit Score, FICO [Axis] Credit Score, FICO [Axis] Securities held-to-maturity, fair value Fair Value Debt securities held to maturity, fair value Debt Securities, Held-to-Maturity, Fair Value Dividends declared per share of common stock (in usd per share) Common Stock, Dividends, Per Share, Declared Variable Interest Entity Consolidation, Variable Interest Entity, Policy [Policy Text Block] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Total amortized cost of debt securities, Maturity After 10 Years Available-for-sale Securities and Held-to-maturity Securities, Debt Maturities, After Ten Years, Amortized Cost Amount of investment in available for sale and held-to-maturity debt securities maturing after the tenth fiscal year following the latest fiscal year. Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Level 2 Fair Value, Inputs, Level 2 [Member] Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Asset Pledged as Collateral Asset Pledged as Collateral [Member] Other derivative contracts, measurement input Derivative Asset (Liability) Net, Measurement Input Residential mortgages Mortgage servicing rights Mortgage Servicing Rights Residential Mortgage [Member] PEO PEO [Member] Total amortized cost of debt securities, Maturity of 1-5 Years Available-For-Sale Securities And Held-To-Maturity Securities, Debt Maturities, After One Through Five Years, Amortized Cost Amount of investment in available for sale and held-to-maturity debt securities maturing in the next fiscal year through the fifth fiscal year following the latest fiscal year. Schedule of investments classified by maturity date Investments Classified by Contractual Maturity Date [Table Text Block] Retained Earnings Retained Earnings [Member] Other banking fees Other Banking Fees [Member] Other Banking Fees [Member] Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] 12 Months or Longer Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Net unrealized gains (losses), before tax OCI, before Reclassifications, before Tax, Attributable to Parent Interest Expense Interest Expense [Member] Nonrecurring measurement basis Fair Value, Nonrecurring [Member] Total fair value of debt securities, Maturity of 1 Year or Less Available-for-sale Securities and Held-to-maturity Securities, Debt Maturities, Maturity Within One Year, Fair Value Fair value of available for sale and held-to-maturity debt securities maturing in the next rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Financing Receivable, Troubled Debt Restructuring [Table] Financing Receivable, Modified [Table] Other income Noninterest Income, Other Provision expense (benefit) for unfunded lending commitments Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) Product and Service [Domain] Product and Service [Domain] Interest Rate Reduction, Term Extension and Payment Delay Interest Rate Reduction, Term Extension and Payment Delay [Member] Interest Rate Reduction, Term Extension and Payment Delay Prepayable Fixed-Rate Afs Securities Portfolio Prepayable Fixed-Rate Afs Securities Portfolio [Member] Prepayable Fixed-Rate Afs Securities Portfolio Fair Value Debt Securities, Available-for-Sale [Abstract] Renewable energy wind investments Renewable Energy Wind Investments [Member] Renewable Energy Wind Investments Letters of credit outstanding, term Guarantor Obligation, Term Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Notional Amount Notional amount Derivative, Notional Amount Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Depositary shares issued (in shares) Preferred Stock, Depositary Shares Issued Preferred Stock, Depositary Shares Issued Loans sold with recourse Obligation to Repurchase Receivables Sold [Member] Series H Series H Preferred Stock [Member] Within the Revolving Period Financing Receivable, Excluding Accrued Interest, Revolving City Area Code City Area Code Schedule of changes in the allowance for credit losses Financing Receivable, Allowance for Credit Loss [Table Text Block] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Allocated income (loss) on investments Noninterest Income, Allocated Income (Loss) On Investments [Member] Noninterest Income, Allocated Income (Loss) On Investments Interest And Dividend Income, Investment Securities Interest And Dividend Income, Securities [Member] Interest And Dividend Income, Securities [Member] Short-term borrowed funds, fair value Short Term Borrowings Fair Value Disclosure Short Term Borrowings, Fair Value Disclosure INVESTING ACTIVITIES Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Accrued interest receivable on loans and leases held for investment Interest Receivable Economic hedges Fair Value Hedging [Member] Fair Value, Debt securities held to maturity, Maturity After 10 Years Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years Schedule of Servicing Assets at Fair Value [Table] Servicing Asset at Fair Value, Activity [Table] Securities gains, net Debt Securities, Realized Gain (Loss) Other Investments Investments, Other [Member] Investments, Other Other liabilities Other Liabilities Goodwill Goodwill Option adjusted spread Measurement Input, Option Adjusted Spread [Member] Measurement Input, Option Adjusted Spread [Member] Card fees Card Fees [Member] Card Fees [Member] Weighted-Average Payment Deferral Financing Receivable, Modified, Weighted Average Payment Deferral From Modification Financing Receivable, Modified, Weighted Average Payment Deferral From Modification Fair Value, Debt securities available for sale, Total Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value Net (increase) decrease in Interest-bearing deposits in banks Proceeds from (Payments for) in Interest-Bearing Deposits in Banks Amortization of actuarial (gain) loss to earnings Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax Amortized cost Debt Securities, Available-for-Sale, Amortized Cost Other Performance Measure, Amount Other Performance Measure, Amount U.S. Treasury and other US Treasury and Government [Member] Constant prepayment rate Measurement Input, Constant Prepayment Rate [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Liabilities Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Net change due to investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation 4.575% fixed/floating-rate senior unsecured notes, due August 2028 Senior Unsecured Notes, 4.575% Fixed/Floating-Rate, Due August 2028 [Member] Senior Unsecured Notes, 4.575% Fixed/Floating-Rate, Due August 2028 Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Document Fiscal Year Focus Document Fiscal Year Focus Servicing Assets at Fair Value [Line Items] Servicing Assets at Fair Value [Line Items] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Total net interest income recognized on fair value hedges Derivative, Fair Value Hedge, Included in Effectiveness, Gain (Loss) Equity [Abstract] Equity [Abstract] Capital markets fees Capital Markets Fees [Member] Capital Markets Fees [Member] BUSINESS SEGMENTS Segment Reporting Disclosure [Text Block] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] U.S. Treasury and other US Treasury Securities [Member] Derivatives not designated as hedging instruments: Not Designated as Hedging Instrument [Member] Decline in fair value from 20% adverse change Sensitivity Analysis Of Fair Value, Fair Value Method, Transferor's Interests In Transferred Financial Assets, Impact Of 1 Percent Adverse Change In Option Adjusted Spread Sensitivity Analysis Of Fair Value, Fair Value Method, Transferor's Interests In Transferred Financial Assets, Impact Of 1 Percent Adverse Change In Option Adjusted Spread Sales Servicing Asset at Fair Value, Disposals Other Commitments [Line Items] Other Commitments [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Gross Unrealized Losses Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] Nonaccrual Doubtful [Member] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Weighted Average Weighted Average [Member] Tax credits recognized Income Tax Expense, Tax Credit [Member] Income Tax Expense, Tax Credit Schedule of Available-for-sale and Held-to-maturity Securities [Table] Schedule of Available-for-sale and Held-to-maturity Securities [Table] Schedule of Available-for-sale and Held-to-maturity Securities [Table] Service charges and fees Service Charges and Fees Amount of revenue from servicing real estate mortgages, credit cards, and other financial assets held by others. Schedule of other comprehensive income Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Depreciation and amortization Depreciation, Depletion and Amortization Commercial and industrial Commercial and Industrial [Member] Commercial and Industrial Consumer and Commercial Portfolio Segment Consumer And Commercial Portfolio Segment [Member] Consumer And Commercial Portfolio Segment [Member] Low Income Housing Tax Credit Partnerships Low Income Housing Tax Credit Partnerships [Member] Low Income Housing Tax Credit Partnerships Arrangement Duration Trading Arrangement Duration Common stock Dividends, Common Stock [Abstract] Total fair value of debt securities, Maturity of 1-5 Years Available-for-sale Securities and Held-to-maturity Securities, Debt Maturities, After One Through Five Years, Fair value of available for sale and held-to-maturity debt securities maturing in the second through fifth rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Segments [Axis] Segments [Axis] Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Other Payment for (Proceeds from) Other Investing Activity Series F Preferred Stock [Member] Series F Preferred Stock [Member] Allowance for unfunded lending commitments, beginning of period Allowance for unfunded lending commitments, end of period Off-Balance-Sheet, Credit Loss, Liability ASSETS: Assets [Abstract] Credit Facility [Axis] Credit Facility [Axis] Other contracts Other Derivative Contracts Other Contract [Member] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Derivative Liabilities Derivative Liability, Including Not Subject to Master Netting Arrangement, after Offset and Deduction [Abstract] Other Commitments [Axis] Other Commitments [Axis] Debt Instrument [Axis] Debt Instrument [Axis] FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] Credit Facility [Domain] Credit Facility [Domain] STOCKHOLDERS’ EQUITY: Equity, Attributable to Parent [Abstract] Troubled debt restructurings on financing receivables Financing Receivable, Modified [Table Text Block] Treasury stock purchased Treasury stock purchased Treasury Stock, Value, Acquired, Cost Method Net loss (pre-tax) on derivatives expected to be reclassified in next 12 months Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net Debt securities at fair value Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value Interest rate Debt Instrument, Interest Rate, Stated Percentage Investment, Name [Axis] Investment, Name [Axis] 30-59 Financial Asset, 30 to 59 Days Past Due [Member] Debt Securities, Available-for-Sale, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract] Debt Securities, Available-for-Sale, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract] Mortgage servicing rights Mortgage Servicing Rights [Member] Mortgage Servicing Rights [Member] Collateral Dependent Collateral Dependent [Member] Collateral Dependent [Member] Amortized Cost, Debt securities held to maturity, Maturity of 5-10 Years Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 5 through 10 Derivative assets Derivative Asset, Subject to Master Netting Arrangement, before Offset Depreciation, amortization, and accretion Depreciation, Amortization and Accretion, Net Entity Registrant Name Entity Registrant Name Amortized cost: Available-for-sale Securities and Held-to-maturity Securities, Debt Maturities, Amortized Cost Basis [Abstract] Available-for-sale Securities and Held-to-maturity Securities, Debt Maturities, Amortized Cost Basis [Abstract] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Closed Portfolios Closed Portfolios [Member] Closed Portfolios Total assets Assets, Fair Value Disclosure Earnings per common share: Earnings Per Share, Basic And Diluted EPS [Abstract] Earnings Per Share, Basic And Diluted EPS Fair value as of beginning of the period Fair value at end of the period Fair value Mortgage servicing rights Servicing Asset at Fair Value, Amount Restatement Determination Date: Restatement Determination Date [Axis] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] 5.718% fixed/floating-rate senior unsecured notes, due July 2032 5.718% Fixed/Floating Rate Senior Unsecured Notes Due July 2032 [Member] 5.718% Fixed/Floating Rate Senior Unsecured Notes Due July 2032 Amortized Cost, Debt securities available for sale, Maturity of 5-10 Years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years, Amortized Cost Other Proceeds from (Payment for) Other Financing Activity Name Trading Arrangement, Individual Name 3.250% fixed-rate senior unsecured notes, due April 2030 3.250% Senior Unsecured Notes, Due April 2030 [Member] 3.250% Senior Unsecured Notes, Due April 2030 [Member] Amortized cost basis of modified loans that are in subsequent default Financing Receivable, Modified, Subsequent Default Loans held for sale at fair value Loan, Held-for-Sale, Fair Value Disclosure Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Term Extension and Payment Delay Extended Maturity And Payment Deferral [Member] Extended Maturity And Payment Deferral Preferred Stock Preferred Stock [Member] Total amortized cost of debt securities, Maturity of 5-10 Years Available-for-sale Securities and Held-to-maturity Securities, Debt Maturities, After Five Through Ten Years, Amortized Cost Amount of investment in available for sale and held-to-maturity debt securities maturing in the fifth through tenth fiscal year following the latest fiscal year. Direct expenses Noninterest Expense, Direct Expenses, Adjusted Noninterest Expense, Direct Expenses, Adjusted Name Awards Close in Time to MNPI Disclosures, Individual Name Amortized Cost, Debt securities held to maturity, Maturity of 1-5 Years Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year One through Five Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Commitment amount Other Commitment Share-based compensation plans APIC, Share-Based Payment Arrangement, Increase for Cost Recognition No FICO available FICO Score, No FICO Available [Member] FICO Score, No FICO Available [Member] Net unrealized gains (losses), tax Other Comprehensive Income (Loss) before Reclassifications, Tax MORTGAGE BANKING AND OTHER SERVICED LOANS Mortgage Servicing Rights [Text Block] The entire disclosure for an entity’s mortgage banking operations. Segments [Domain] Segments [Domain] Income Statement Location [Axis] Statement of Income Location, Balance [Axis] Changes in unpaid principal balance Servicing Asset at Fair Value, Other Changes that Affect Balance SECURITIES Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Consumer Banking Consumer Banking Segment [Member] Consumer Banking [Member] Greater than 800 FICO Score, Greater Than 800 [Member] FICO Score, Greater Than 800 [Member] Net unrealized gains (losses) on investment securities Net Unrealized Gains (Losses) on Investment Securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] INTEREST EXPENSE: Interest Expense, Operating and Nonoperating [Abstract] Less: Gross amounts offset in the Consolidated Balance Sheets Derivative Liability, Subject to Master Netting Arrangement, Asset Offset Senior Unsecured Notes Senior Notes [Member] Purchases of debt securities available for sale Payments to Acquire Debt Securities, Available-for-Sale $25.00 par value,100,000,000 shares authorized; 2,150,000 shares issued and outstanding at March 31, 2026 and December 31, 2025 Preferred stock, value, issued Preferred Stock, Value, Issued State and political subdivisions US States and Political Subdivisions Debt Securities [Member] 4.350% fixed-rate reset subordinated debt, due February 2031 4.350% Fixed Rate Subordinated Debt, Due February 2031 [Member] 4.350% Fixed Rate Subordinated Debt, Due February 2031 Net benefit (expense) included in Income tax expense Income Tax Expense, Net Benefit [Member] Income Tax Expense, Net Benefit Year two Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year Subordinated Debt Subordinated Debt [Member] Financial Asset, Period Past Due [Axis] Financial Asset, Aging [Axis] All Executive Categories All Executive Categories [Member] $0.01 par value, 1,000,000,000 shares authorized; 653,827,918 shares issued and 426,023,578 shares outstanding at March 31, 2026 and 652,238,745 shares issued and 429,242,174 shares outstanding at December 31, 2025 Common Stock, Value, Issued Derivatives Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Commitments and Contingencies (refer to Note 11) Commitments and Contingencies Year one Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff Fair Value Measured at Net Asset Value Per Share Fair Value Measured at Net Asset Value Per Share [Member] Interest Income Interest Income [Member] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Fair Value, Debt securities available for sale, Maturity After 10 Years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Other commitments Other Commitments [Member] Other Commitments 60-89 Financial Asset, 60 to 89 Days Past Due [Member] Hedging Designation [Axis] Hedging Designation [Axis] Provision (benefit) for credit losses Credit provision Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) And Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) And Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) Foreign exchange and derivative products Foreign Exchange And Trade Finance Fees Fee income earned related to foreign exchange, trade finance fees and other related income. Pre-tax net gains (losses) reclassified from AOCI into interest 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] Losses Debt Securities, Available-for-Sale, Realized Loss All Individuals All Individuals [Member] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Disclosure of Reclassification Amount [Text Block] Name Forgone Recovery, Individual Name 4.300% fixed-rate reset subordinated debt, due February 2031 4.300% Fixed Rate Subordinated Debt, Due February 2031 [Member] 4.300% Fixed Rate Subordinated Debt, Due February 2031 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] Securities Sold under Agreements to Repurchase Securities Sold under Agreements to Repurchase [Member] Securitized borrowings, weighted average interest rate Debt, Weighted Average Interest Rate Guaranteed residential mortgages FHA, VA And USDA Loans [Member] FHA, VA And USDA Loans Year five Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Derivative contracts used to hedge residential MSRs Interest Rate Contract, Mortgage Servicing Rights [Member] Interest Rate Contract, Mortgage Servicing Rights [Member] Internal Model Valuation Technique, Internal Model [Member] Valuation Technique, Internal Model [Member] Schedule of fair value hedges Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Commercial Commercial Portfolio Segment [Member] Risk participation agreements Loan Participations and Assignments [Member] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Title of 12(b) Security Title of 12(b) Security SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Schedule [Table] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Schedule [Table] Provision expense (benefit) for loans and leases Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) Amortized Cost, Debt securities available for sale, Maturity of 1 Year or Less Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Equipment and software Equipment Expense Per common share information: Earnings Per Share [Abstract] Year three Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff Liquidation preference per depository share (usd per share) Preferred Stock, Liquidation Preference Per Depository Share Preferred Stock, Liquidation Preference Per Depository Share MSR value Measurement Input, MSR Value [Member] Measurement Input, MSR Value [Member] 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] Treasury stock purchased (in shares) Treasury stock purchased (in shares) Treasury Stock, Shares, Acquired Collateral-dependent loans Loans, Collateral Dependent, Impaired [Member] Loans, Collateral Dependent, Impaired [Member] Contractually specified servicing, late and other ancillary fees Contractually Specified Servicing Fee, Late Fee, and Ancillary Fee Earned in Exchange for Servicing Financial Asset Award Timing Disclosures [Line Items] Schedule of income recognized on investment securities Gain (Loss) on Securities [Table Text Block] Measurement Frequency [Domain] Measurement Frequency [Domain] Federal Home Loan Bank Advances Federal Home Loan Bank advances Federal Home Loan Bank Advances [Member] STOCKHOLDERS' EQUITY Equity [Text Block] Loans held for sale, carrying value Other Loans Receivable Held-for-sale, Amount The amount of other loans receivable that will be sold to other entities. Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] Net loans and leases Loans pledged as collateral for FHLB borrowed funds Net loans and leases Lending to SPEs included in Loans and leases Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss Credit Quality Indicators Financing Receivable, Credit Quality Indicators, Policy [Policy Text Block] Financing Receivable, Credit Quality Indicators, Policy 680-739 FICO Score, 680 To 739 [Member] FICO Score, 680 To 739 [Member] NET INCOME Net income Net income Net Income (Loss) Attributable to Parent Renewable Energy Entities Renewable Energy Entities [Member] Renewable Energy Entities Schedule of mortgage banking activities Schedule Of Mortgage Banking Activities With Servicing Rights [Table Text Block] Schedule Of Mortgage Banking Activities With Servicing Rights Gain on sales Gain (Loss) on Sale of Mortgage Loans Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Preferred stock, authorized (in shares) Preferred Stock, Shares Authorized Treasury stock purchased Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Financing Receivable, Past Due [Table] Financing Receivable, Past Due [Table] Retained earnings Retained Earnings (Accumulated Deficit) 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] Weighted average option adjusted spread Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate Class of Stock [Axis] Class of Stock [Axis] Net unrealized gains (losses) on cash flow hedges Net Unrealized Gains (Losses) on Cash Flow Hedges 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] Statement [Table] Statement [Table] Deposits: Noninterest-Bearing Deposit Liabilities [Abstract] Deferred income tax expense (benefit) Deferred Income Tax Expense (Benefit) Adjustments to reconcile net income to net change due to 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] Risk Participation Agreements [Abstract] Risk Participation Agreements [Abstract] Risk Participation Agreements [Abstract] Customer interest rate contracts Interest Rate Contract, Customer [Member] Interest Rate Contract, Customer [Member] Series C Series C Preferred Stock [Member] Customer commodity contracts Customer Commodity Contract [Member] Customer Commodity Contract Fair Value, Debt securities held to maturity, Maturity of 1-5 Years Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Rolling after One through Five Years Assets measured at fair value on recurring basis and classified as Level 3 Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] All Adjustments to Compensation All Adjustments to Compensation [Member] Interest Rate Reduction Contractual Interest Rate Reduction [Member] Amendment Flag Amendment Flag Amortization Income Tax Expense, Amortization [Member] Income Tax Expense, Amortization Treasury stock, at cost, 227,804,340 and 222,996,571 shares at March 31, 2026 and December 31, 2025, respectively Treasury Stock, Common, Value Termination Date Trading Arrangement Termination Date Interest-bearing deposits in banks Interest-Bearing Deposits in Banks and Other Financial Institutions Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Less: Allowance for loan and lease losses Allowance for loan and lease losses, beginning of period Allowance for loan and lease losses, end of period Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 3.750% fixed-rate reset subordinated debt, due February 2031 3.750% Fixed Rate Subordinated Debt, Due February 2031 [Member] 3.750% Fixed Rate Subordinated Debt, Due February 2031 Basic (in shares) Weighted-average common shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Schedule of earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Segment Reporting [Abstract] Segment Reporting [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Reclassification from AOCI, tax Reclassification from AOCI, Current Period, Tax 5.841% fixed/floating-rate senior unsecured notes, due January 2030 5.841% Fixed/Floating-Rate Senior Unsecured Notes, Due January 2030 [Member] 5.841% Fixed/Floating-Rate Senior Unsecured Notes, Due January 2030 Reclassification from AOCI Reclassification from AOCI, Current Period, before Tax, Attributable to Parent 2.850% fixed-rate senior unsecured notes, due July 2026 2.850% Senior Unsecured Notes, Due 2026 [Member] 2.850% Senior Unsecured Notes, Due 2026 [Member] Securities gains, net Debt Securities, Available-for-Sale, Realized Gain (Loss) Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Consolidated Entities [Axis] Consolidated Entities [Axis] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Use of Estimates Use of Estimates, Policy [Policy Text Block] Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Total other comprehensive income (loss), tax Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Occupancy Occupancy, Net Less: Gross amounts offset in the Consolidated Balance Sheets Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Insider Trading Arrangements [Line Items] Prior to year five Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year Current Financial Asset, Not Past Due [Member] TOTAL LIABILITIES Liabilities 2.500% fixed-rate senior unsecured notes, due February 2030 2.500% Senior Unsecured Notes, Due February 2030 [Member] 2.500% Senior Unsecured Notes, Due February 2030 [Member] Amortized Cost, Debt securities available for sale, Total Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost Total as a % of Loan Class Financing Receivable, Excluding Accrued Interest, Modified in Period, to Total Financing Receivables, Percentage Series G Series G Preferred Stock [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Unfunded capital commitments Fair Value Disclosure, off-Balance-Sheet Risks, Amount, Liability LOANS AND LEASES Loans, Notes, Trade and Other Receivables, Excluding Allowance for Credit Losses [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Net (increase) decrease in Loans and leases Payments for (Proceeds from) Loans and Leases Asset-backed securities Asset-Backed Securities [Member] Consolidation Items [Axis] Consolidation Items [Axis] Weighted average rate Federal Home Loan Bank, Advances, Weighted Average Interest Rate Counterparty Name [Axis] Counterparty Name [Axis] Proceeds from maturities and paydowns of debt securities held to maturity Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities Debt securities held to maturity (fair value of $6,998 and $7,150, respectively, and including $68 and $67 pledged to creditors, respectively) Asset-backed investments included in Debt securities Amortized Cost Debt securities held to maturity, carrying value Debt Securities, Held-to-Maturity, Excluding Accrued Interest, after Allowance for Credit Loss Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Home equity Home Equity Loan And Line Of Credit [Member] Home Equity Loan And Line Of Credit [Member] Federal Home Loan Mortgage Corporation (FHLMC) Federal Home Loan Mortgage Corporation (FHLMC) [Member]