Deposits and Borrowings [Abstract] Deposits and Borrowings [Abstract] Components of Deposits, Short-term Borrowings and Long-term Debt Schedule of Debt [Table Text Block] Schedule of Maturity Profile of Borrowings and Debt Schedule of Maturities of Time Deposits with Contractual Maturity Date Short Term Debt and Long term Debt [Table Text Block] [Table Text Block] for Schedule of Maturities of Time Deposits with Contractual Maturity Date Short Term Debt and Long term Debt [Table] Schedule of Components of Interest Expense on Short-Term Borrowings and Long-Term Debt Schedule of Components of Interest Expense on Borrowings [Table Text Block] Tabular disclosure of interest expense attributable to short-term borrowings and long-term debt. Banking and Thrift [Abstract] Schedule of Comparison of Capital Ratios Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] Amended and Restated 2004 Stock Incentive Plan Stock Incentive Plan 2004 [Member] The active stock-based employee compensation plan. Under the plan, we reserve common shares for issuance in various forms including incentive stock options, nonstatutory stock options, stock appreciation rights, restricted stock awards, restricted stock units, and performance share units. Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Performance Shares Awards Performance Shares [Member] Performance Share Units Performance Share Units [Member] Performance share units. Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Shares/Units Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Unvested as of beginning of the period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Unvested as of end of period Weighted Average Grant Date Fair Value per Share (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Unvested as of beginning of the period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Unvested as of end of the period Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Current Reporting Status Entity Current Reporting Status Entity Voluntary Filers Entity Voluntary Filers Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Public Float Entity Public Float Condensed Financial Information of Parent Company Only Disclosure [Abstract] Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Parent Company Parent Company [Member] Condensed Balance Sheet Statements, Captions [Line Items] Condensed Balance Sheet Statements, Captions [Line Items] Assets: Assets [Abstract] Cash and cash equivalents Cash, Cash Equivalents, and Federal Funds Sold Investment in subsidiaries Investments in Subsidiaries Investments in Subsidiaries Loans to subsidiaries Receivables From Subsidiaries Receivables From Subsidiaries Securities available for sale Available-for-sale Securities Other assets Other Assets Total assets Assets Liabilities: Liabilities [Abstract] Senior and subordinated notes Unsecured Debt Other borrowings Other Borrowings Accrued expenses and other liabilities Other Liabilities Total liabilities Liabilities Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Total stockholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders’ equity Liabilities and Equity Accounting Policies [Abstract] Schedule of Collaborative Arrangements and Non-collaborative Arrangement Transactions [Table] Schedule of Collaborative Arrangements and Non-collaborative Arrangement Transactions [Table] Type of Arrangement and Non-arrangement Transactions [Axis] Type of Arrangement and Non-arrangement Transactions [Axis] Arrangements and Non-arrangement Transactions [Domain] Arrangements and Non-arrangement Transactions [Domain] Collaborative Arrangement [Member] Collaborative Arrangement [Member] Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] Reduction in Interest Income Interest and Fee Income, Loans and Leases Variable Interest Entities and Securitization [Abstract] Variable Interest Entities and Securitization [Abstract] Variable Interest Entities and Securitizations Variable Interest Entity Disclosure [Text Block] Fair Value Disclosures [Abstract] Fair Value Inputs, Liabilities, Quantitative Information [Table] Fair Value Inputs, Liabilities, Quantitative Information [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring [Member] Fair Value, Measurements, Recurring [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 3 Fair Value, Inputs, Level 3 [Member] Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Derivative liabilities Derivative Financial Instruments, Liabilities [Member] Valuation Technique [Axis] Valuation Technique [Axis] Valuation Technique [Domain] Valuation Technique [Domain] Discounted cash flows Income Approach Valuation Technique [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Weighted Average Weighted Average [Member] Fair Value Inputs, Liabilities, Quantitative Information [Line Items] Fair Value Inputs, Liabilities, Quantitative Information [Line Items] Derivative Liabilities, Gross Amount Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement Fair Value Inputs [Abstract] Fair Value Inputs [Abstract] Swap rates (percent) Fair Value Inputs, Swap Rate Fair value inputs, swap rate. Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Qualitative and Quantitative Information, Transferor's Continuing Involvement, Transferred Financial Assets, by Transfer or Transferee [Axis] Qualitative and Quantitative Information, Transferor's Continuing Involvement, Transferred Financial Assets, by Transfer or Transferee [Axis] Qualitative and Quantitative Information, Transferor's Continuing Involvement in Transferred Financial Assets, Transfer or Transferee [Domain] Qualitative and Quantitative Information, Transferor's Continuing Involvement in Transferred Financial Assets, Transfer or Transferee [Domain] Variable Interest Entity, Not Primary Beneficiary Variable Interest Entity, Not Primary Beneficiary [Member] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Option- ARM Option Arm [Member] Presentation of information regarding securitization programs containing mortgage option arm loan receivables. GreenPoint HELOCs Gpm Helocs [Member] Presentation of information regarding securitization programs containing home equity line of credit loan receivables. GreenPoint Manufactured Housing Gpm Mfh [Member] Presentation of information regarding securitization programs containing manufactured housing loan receivables. Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Affordable housing entities Affordable Housing Entities [Member] The Company invests in affordable housing properties. Affordable housing VIEs can be corporations, partnerships, trusts, or any other legal structure used for investing in affordable housing properties. The Company consolidates those VIEs in which it has a variable interest, power to direct significant activities of the VIE, and obligation to absorb losses or right to receive benefits that could be significant to the VIE. The Company's exposure to losses is limited to its variable interests. Entities that provide capital to low-income and rural communities Investment Companies Providing Capital to Low-Income and Rural Communities [Member] Investment Companies Providing Capital to Low-Income and Rural Communities Other Other Investments [Member] Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Securities held by third-party investors, mortgage Continuing Involvement with Derecognized Transferred Financial Assets, Liabilities Incurred Continuing Involvement with Derecognized Transferred Financial Assets, Liabilities Incurred Funded HELOCs advances Qualitative and Quantitative Information, Transferor's Continuing Involvement, Arrangements of Financial Support, Cumulative Amount Advanced Qualitative and Quantitative Information, Transferor's Continuing Involvement, Arrangements of Financial Support, Cumulative Amount Advanced Unfunded commitment on residual interests on trusts Qualitative and Quantitative Information, Transferor's Continuing Involvement, Arrangements of Financial Support, Unfunded Commitment On Residual Interests On Trusts Qualitative and Quantitative Information, Transferor's Continuing Involvement, Arrangements of Financial Support, Unfunded Commitment On Residual Interests On Trusts Continuing Involvement with Derecognized Transferred Financial Assets, Amount Outstanding Continuing Involvement with Derecognized Transferred Financial Assets, Amount Outstanding Maximum exposure to loss Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount Letters of credit funded Qualitative and Quantitative Information, Transferor's Continuing Involvement, Arrangements of Financial Support, Letters of Credit Qualitative and Quantitative Information, Transferor's Continuing Involvement, Arrangements of Financial Support, Letters of Credit Qualitative and Quantitative Information, Transferor's Continuing Involvement, Arrangements of Financial Support, Amount Qualitative and Quantitative Information, Transferor's Continuing Involvement, Arrangements of Financial Support, Amount Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities Amortization Method Qualified Affordable Housing Project Investments, Amortization Amortization Method Qualified Affordable Housing Project Investments, Amortization Affordable Housing Tax Credits And Other Tax Benefits, Amount Affordable Housing Tax Credits and Other Tax Benefits, Amount Amortization Method Qualified Affordable Housing Project Investments Amortization Method Qualified Affordable Housing Project Investments Qualified Affordable Housing Project Investments, Commitment Qualified Affordable Housing Project Investments, Commitment Affordable Housing Tax Credits Commitment, Year to be Paid Affordable Housing Tax Credits Commitment, Year to be Paid Carrying amounts of assets, unconsolidated Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets Total assets of the unconsolidated VIE investment funds Variable Interest Entity, Nonconsolidated, Total Assets Variable Interest Entity, Nonconsolidated, Total Assets VIEs consolidated assets Variable Interest Entity, Consolidated, Carrying Amount, Assets Compensation and Retirement Disclosure [Abstract] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plan, Asset Categories [Axis] Defined Benefit Plan, Asset Categories [Axis] Plan Asset Categories [Domain] Plan Asset Categories [Domain] Common collective trusts Common Collective Trusts [Member] Common collective trusts. Corporate bonds (S&P rating of A or higher) Corporate Bonds, Standard & Poor's, A Rating or Higher [Member] Corporate Bonds, Standard & Poor's, A Rating or Higher [Member] Corporate bonds (S&P rating of lower than A) Corporate Bonds, Standard & Poor's, Lower Than A Rating [Member] Corporate Bonds, Standard & Poor's, Lower Than A Rating [Member] US Treasury and Government US Treasury and Government [Member] Mortgage-backed securities Collateralized Mortgage Backed Securities [Member] Municipal bonds Municipal Bonds [Member] Money market funds Money Market Funds [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Plan asset allocation percentage Defined Benefit Plan, Actual Plan Asset Allocations Investments, Debt and Equity Securities [Abstract] Schedule Of Expected Maturity And Weighted Average Yield Of Securities [Table] Schedule Of Expected Maturity And Weighted Average Yield Of Securities [Table] Schedule of expected maturity and weighted average yield of securities. Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] U.S. Treasury securities US Treasury Securities [Member] Corporate debt securities guaranteed by U.S. government agencies US Government-sponsored Enterprises Debt Securities [Member] RMBS Residential Mortgage Backed Securities [Member] CMBS Commercial Mortgage Backed Securities [Member] Other ABS Other Asset-backed Securities [Member] Other Asset-backed Securities [Member] Other securities Other Debt and Equity Securities [Member] Other Debt and Equity Securities [Member] Debt Security [Axis] Debt Security [Axis] Major Types of Debt Securities [Domain] Major Types of Debt Securities [Domain] Agency Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Non-Agency Mortgage-backed Securities, Issued by Private Enterprises [Member] Schedule Of Expected Maturity And Weighted Average Yield Of Securities [Line Items] Schedule Of Expected Maturity And Weighted Average Yield Of Securities [Line Items] Schedule of expected maturity and weighted average yield of securities line items. Securities available for sale Available-for-sale Securities, Expected Debt Maturities, Fair Value, Rolling Maturity [Abstract] Available-for-sale Securities, Expected Debt Maturities, Fair Value, Rolling Maturity [Abstract] Due in 1 Year or Less Available-for-sale Securities, Expected Debt Maturities, Next Rolling Twelve Months, Fair Value Available-for-sale Securities, Expected Debt Maturities, Next Rolling Twelve Months, Fair Value Due 1 Year through 5 Years Available-for-sale Securities, Expected Debt Maturities, Rolling Year Two Through Five, Fair Value Available-for-sale Securities, Expected Debt Maturities, Rolling Year Two Through Five, Fair Value Due 5 Years through 10 Years Available-for-sale Securities, Expected Debt Maturities, Rolling Year Six Through Ten, Fair Value Available-for-sale Securities, Expected Debt Maturities, Rolling Year Six Through Ten, Fair Value Due 10 Years Available-for-sale Securities, Expected Debt Maturities, Rolling after Year Ten, Fair Value Available-for-sale Securities, Expected Debt Maturities, Rolling after Year Ten, Fair Value Available-for-sale Securities Amortized cost of securities available for sale Available-for-sale Securities, Expected Debt Maturities, Amortized Cost Basis, Rolling Maturity Available-for-sale Securities, Expected Debt Maturities, Amortized Cost Basis, Rolling Maturity Due in 1 Year or Less Available-for-sale Securities, Expected Debt Maturities, Next Rolling Twelve Months, Amortized Cost Basis Available-for-sale Securities, Expected Debt Maturities, Next Rolling Twelve Months, Amortized Cost Basis Due 1 Year through 5 Years Available-for-sale Securities, Expected Debt Maturities, Rolling Year Two Through Five, Amortized Cost Basis Available-for-sale Securities, Expected Debt Maturities, Rolling Year Two Through Five, Amortized Cost Basis Due 5 Years through 10 Years Available-for-sale Securities, Expected Debt Maturities, Rolling Year Six Through Ten, Amortized Cost Basis Available-for-sale Securities, Expected Debt Maturities, Rolling Year Six Through Ten, Amortized Cost Basis Due 10 Years Available-for-sale Securities, Expected Debt Maturities, Rolling after Year Ten, Amortized Cost Basis Available-for-sale Securities, Expected Debt Maturities, Rolling after Year Ten, Amortized Cost Basis Total Amortized Cost Available-for-sale Securities, Amortized Cost Basis Weighted average yield for securities available for sale Available-for-sale Securities, Weighted Average Yield [Abstract] Available-for-sale Securities, Weighted Average Yield [Abstract] Due in 1 Year or Less Available-for-sale Securities, Expected Debt Maturities, Next Rolling Twelve Months, Weighted Average Yield Available-for-sale Securities, Expected Debt Maturities, Next Rolling Twelve Months, Weighted Average Yield Due 1 Year through 5 Years Available-for-sale Securities, Expected Debt Maturities, Rolling Year Two Through Five, Weighted Average Yield Available-for-sale Securities, Expected Debt Maturities, Rolling Year Two Through Five, Weighted Average Yield Due 5 Years through 10 Years Available-for-sale Securities, Expected Debt Maturities, Rolling Year Six Through Ten, Weighted Average Yield Available-for-sale Securities, Expected Debt Maturities, Rolling Year Six Through Ten, Weighted Average Yield Due 10 Years Available-for-sale Securities, Expected Debt Maturities, Rolling after Year Ten, Weighted Average Yield Available-for-sale Securities, Expected Debt Maturities, Rolling after Year Ten, Weighted Average Yield Total weighted average yield Available-for-sale Securities, Weighted Average Yield Available-for-sale Securities, Weighted Average Yield Carrying value of securities held to maturity Held-to-maturity Securities, Expected Debt Maturities, Net Carrying Amount [Abstract] Held-to-maturity Securities, Expected Debt Maturities, Net Carrying Amount [Abstract] Due in 1 Year or Less Held-to-maturity Securities, Expected Debt Maturities, within One Year, Net Carrying Amount Held-to-maturity Securities, Expected Debt Maturities, within One Year, Net Carrying Amount Due 1 Year through 5 Years Held-to-maturity Securities, Expected Debt Maturities, after One Through Five Years, Net Carrying Amount Held-to-maturity Securities, Expected Debt Maturities, after One Through Five Years, Net Carrying Amount Due 5 Years through 10 Years Held-to-maturity Securities, Expected Debt Maturities, after Five Through Ten Years, Net Carrying Amount Held-to-maturity Securities, Expected Debt Maturities, after Five Through Ten Years, Net Carrying Amount Due 10 Years Held-to-maturity Securities, Expected Debt Maturities, after Ten Years, Net Carrying Amount Held-to-maturity Securities, Expected Debt Maturities, after Ten Years, Net Carrying Amount Carrying Value Held-to-maturity Securities Fair value of securities held to maturity Held-to-maturity Securities, Expected Debt Maturities, Fair Value, Rolling Maturity [Abstract] Held-to-maturity Securities, Expected Debt Maturities, Fair Value, Rolling Maturity [Abstract] Due in 1 Year or Less Held-to-maturity Securities, Expected Debt Maturities, Next Rolling Twelve Months, Fair Value Held-to-maturity Securities, Expected Debt Maturities, Next Rolling Twelve Months, Fair Value Due 1 Year through 5 Years Held-to-maturity Securities, Expected Debt Maturities, Rolling Year Two Through Five, Fair Value Held-to-maturity Securities, Expected Debt Maturities, Rolling Year Two Through Five, Fair Value Due 5 Years through 10 Years Held-to-maturity Securities, Expected Debt Maturities, Rolling Year Six Through Ten, Fair Value Held-to-maturity Securities, Expected Debt Maturities, Rolling Year Six Through Ten, Fair Value Due 10 Years Held-to-maturity Securities, Expected Debt Maturities, Rolling after Ten Years, Fair Value Held-to-maturity Securities, Expected Debt Maturities, Rolling after Ten Years, Fair Value Fair Value Held-to-maturity Securities, Fair Value Weighted average yield for securities held to maturity Held-to-maturity Securities, Expected Debt Maturities, Weighted Average Yield [Abstract] Held-to-maturity Securities, Expected Debt Maturities, Weighted Average Yield [Abstract] Due in 1 Year or Less Held-to-maturity Securities, Expected Debt Maturities, Next Rolling Twelve Months, Weighted-Average Yield Held-to-maturity Securities, Expected Debt Maturities, Next Rolling Twelve Months, Weighted-Average Yield Due 1 Year through 5 Years Held-to-maturity Securities, Expected Debt Maturities, Rolling Year Two Through Five, Weighted-Average Yield Held-to-maturity Securities, Expected Debt Maturities, Rolling Year Two Through Five, Weighted-Average Yield Due 5 Years through 10 Years Held-to-maturity Securities, Expected Debt Maturities, Rolling Year Six Through Ten, Weighted-Average Yield Held-to-maturity Securities, Expected Debt Maturities, Rolling Year Six Through Ten, Weighted-Average Yield Due 10 Years Held-to-maturity Securities, Expected Debt Maturities, Rolling after Ten Years, Weighted-Average Yield Held-to-maturity Securities, Expected Debt Maturities, Rolling after Ten Years, Weighted-Average Yield Total weighted average yield Held To Maturity Securities, Expected Debt Maturities, Weighted Average Yield Held to maturity securities expected debt maturities weighted average yield Receivables [Abstract] Loans and Leases Receivable Disclosure [Table] Loans and Leases Receivable Disclosure [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Credit Card Portfolio Segment [Member] Credit Card Portfolio Segment [Member] Credit Card Portfolio Segment [Member] Geographic Distribution [Axis] Geographic Distribution [Axis] Geographic Distribution [Domain] Geographic Distribution [Domain] Geographic Distribution, Domestic [Member] Geographic Distribution, Domestic [Member] Geographic Distribution, Foreign [Member] Geographic Distribution, Foreign [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] California CALIFORNIA Texas TEXAS New York NEW YORK Florida FLORIDA Illinois ILLINOIS Pennsylvania PENNSYLVANIA Ohio OHIO New Jersey NEW JERSEY Michigan MICHIGAN Other Other States [Member] Other states not individually listed. Canada CANADA United Kingdom UNITED KINGDOM Loans and Leases Receivable Disclosure [Line Items] Loans and Leases Receivable Disclosure [Line Items] Loans held for investment Loans and Leases Receivable, Gross Percentage of portfolio Concentration Risk, Percentage Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Residential Mortgage Backed Securities [Member] Non-agency RMBS and CMBS, Non-agency ABS and Other Securities Non-agency RMBS and CMBS, Non-agency ABS and Other Securities [Member] Non-agency RMBS and CMBS, Non-agency ABS and Other Securities [Member] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Investment Securities Portfolio Investment Securities Portfolio [Member] Investment Securities Portfolio [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Gross Unrealized Losses on Available-for-sale Securities Gross Unrealized Losses on Available-for-sale Securities [Member] Gross Unrealized Losses on Available-for-sale Securities [Member] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, before Tax, Including Portion Attributable to Noncontrolling Interest, Available-for-sale Securities Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, before Tax, Including Portion Attributable to Noncontrolling Interest, Available-for-sale Securities Number of sale securities exceeding amortized cost over fair value Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Difference in amortized cost and fair value of securities that had been in a loss position for 12 months or longer Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Securities held to maturity Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Fair value of securities pledged Available-for-sale Securities Pledged as Collateral Carrying value of securities pledged Held-to-maturity Securities Pledged as Collateral Encumbered amount of securities pledged as collateral Marketable Securities, Restricted Fair value of securities pledged, accepted Derivative, Collateral, Obligation to Return Securities Held-to-maturity Securities, Accumulated Unrecognized Holding Loss Held-to-maturity Securities, Accumulated Unrecognized Holding Loss Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating Segments Operating Segments [Member] Other Corporate, Non-Segment [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Credit Card Credit Card [Member] Credit card portfolio segment. Consumer Banking Consumer Banking [Member] Consists of our branch-based lending and deposit gathering activities for small business customers, as well as branch-based consumer deposit gathering and lending activities, national deposit gathering, national automobile lending, consumer mortgage lending and servicing activities. Commercial Banking Commercial Banking [Member] Consists of lending, deposit gathering and treasury management services to commercial real estate and middle market customers. Our Commercial Banking business results also include the results of a national portfolio of small ticket commercial real-estate loans that are in run-off mode. Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Net interest income Interest Income (Expense), Net Non-interest income Noninterest Income Total net revenue Revenues Provision for loan, lease and other losses Provision for Loan, Lease, and Other Losses Total non-interest expense Noninterest Expense Income from continuing operations before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax provision (benefit) Income Tax Expense (Benefit) Income from continuing operations, net of tax Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Total deposits Deposits Effective income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Changes in Accretable Yield of Acquired Securities [Roll Forward] Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] Accretable yield beginning balance Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Additions from new acquisitions Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Additions Accretion recognized in earnings Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Accretion Reduction due to payoffs, disposals, transfers and other Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Disposals of Loans Net reclassifications from (to) nonaccretable difference Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Reclassifications from (to) Nonaccretable Difference Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Reclassifications from (to) Nonaccretable Difference Accretable yield ending balance Earnings Per Share [Abstract] Income (loss) from discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Net income Net Income (Loss) Attributable to Parent Dividends and undistributed earnings allocated to participating securities Participating Securities, Distributed and Undistributed Earnings (Loss), excluding Preferred Stock Dividends, Basic Participating Securities, Distributed and Undistributed Earnings (Loss), excluding Preferred Stock Dividends, Basic Preferred stock dividends Preferred Stock Dividends, Income Statement Impact Net income available to common stockholders Net Income (Loss) Available to Common Stockholders, Basic Total weighted-average basic shares outstanding Weighted Average Number of Shares Outstanding, Basic Effect of dilutive securities: Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract] Stock options Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Other contingently issuable shares Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares Warrants Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants Total effect of dilutive securities Weighted Average Number Diluted Shares Outstanding Adjustment Total weighted-average diluted shares outstanding Weighted Average Number of Shares Outstanding, Diluted Basic earnings per common share: Earnings Per Share, Basic [Abstract] Net income from continuing operations (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Income (loss) from discontinued operations (in dollars per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Net income per basic common share (in dollars per share) Earnings Per Share, Basic Diluted earnings per common share: Earnings Per Share, Diluted [Abstract] Net income from continuing operations (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share Income (loss) from discontinued operations (in dollars per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Net income per diluted common share (in dollars per share) Earnings Per Share, Diluted Quarterly Financial Information Disclosure [Abstract] Quarterly Financial Statement Information [Table] Quarterly Financial Statement Information [Table] Quarterly Financial Statement Information [Table] Quarterly Financial Statement Information [Line Items] Quarterly Financial Statement Information [Line Items] [Line Items] for Quarterly Financial Statement Information [Table] Total interest income Interest and Dividend Income, Operating Interest expense Interest Expense Net interest income after provision for credit losses Interest Income (Expense), after Provision for Loan Loss Non-interest expense Income (loss) discontinued operations (in dollars per share) Income (loss) from discontinued operations (in dollars per share) Weighted average common shares outstanding: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Basic common shares Diluted common shares Average balance sheet data: Average Balance Sheet Data [Abstract] Average Balance Sheet Data [Abstract] Interest-earning assets Interest-Earning Assets Interest-Earning Assets Interest-bearing deposits Interest-bearing Deposit Liabilities Borrowings Debt, Long-term and Short-term, Combined Amount Total stockholders’ equity Commitments and Contingencies Disclosure [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Subsidiaries Subsidiaries [Member] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Representation and Warranty Liability [Member] Representation and Warranty Liability [Member] Representation and Warranty Liability [Member] Operating Activities [Axis] Operating Activities [Axis] Operating Activities [Domain] Operating Activities [Domain] Continuing Operations Continuing Operations [Member] Discontinued Operations Discontinued Operations [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Loss Contingency Accrual [Roll Forward] Loss Contingency Accrual [Roll Forward] Representation and warranty repurchase reserve, beginning of period Loss Contingency Accrual Provision (benefit) for mortgage representation and warranty losses Loss Contingency Accrual, Provision Net realized losses Loss Contingency Accrual, Payments Representation and warranty repurchase reserve, end of period Employee Benefit Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] Defined Pension Benefits Pension Plan [Member] Other Postretirement Benefits Other Postretirement Benefit Plan [Member] Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Actuarial Gain (Loss), before Tax [Abstract] Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Actuarial Gain (Loss), before Tax [Abstract] Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax Defined Benefit Plan, Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rates [Abstract] Defined Benefit Plan, Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rates [Abstract] Effect of one percentage point increase on accumulated postretirement benefit obligation Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation Effect of one percentage point decrease on accumulated postretirement benefit obligation Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation Schedule of letter of credit and other loan commitments [Table Text Block] Schedule of letter of credit and other loan commitments [Table Text Block] Schedule of letter of credit and other loan commitments [Table Text Block] Schedule of Unpaid Principal Balance of Mortgage Loans Originated and Sold to Third Parties Based on Category of Purchaser Unpaid Principal Balance of Mortgage Loans Originated and Sold to Third Parties Based on Category of Purchaser [Table Text Block] Schedule of unpaid principal balance of mortgage loans originated and sold to third parties based on category of purchaser. Schedule of Open Claims in Pipeline Schedule of Unresolved Repurchase Requests [Table Text Block] Schedule of Unresolved Repurchase Requests Schedule of Changes in Representation and Warranty Reserve Changes in Representation and Warranty Reserve [Table Text Block] Schedule of changes in representation and warranty reserves. Schedule of Allocation of Representation and Warranty Reserves Allocation of Representation and Warranty Reserve [Table Text Block] Schedule of allocation of representation and warranty reserves. Short-term borrowings: Short-term Debt [Abstract] Federal funds purchased and securities loaned or sold under agreements to repurchase Interest Expense, Federal Funds Purchased and Securities Sold under Agreements to Repurchase FHLB advances Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Short-term Total short-term borrowings Interest Expense, Short-term Borrowings Long-term debt: Interest Expense, Long-term Debt [Abstract] Securitized debt obligations Interest Expense, Secured Debt Interest Expense, Secured Debt Senior and subordinated notes Interest Expense, Unsecured Debt Interest expense incurred during the reporting period on senior and subordinated notes. Other long-term borrowings Interest Expense, Other Long-term Debt Total long-term debt Interest Expense, Long-term Debt Total interest expense Interest Expense, Borrowings Securities available for sale, at fair value Securities held to maturity, at carrying value Total investments securities Marketable Securities Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Capital One Bank (USA), N.A. Capital One Bank (USA) N.A. [Member] Capital One Bank (USA) N.A. [Member] Capital One, N.A. Capital One, N.A. [Member] Capital One, N.A. [Member] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Common equity Tier 1 capital: Tier One Common Equity [Abstract] Tier One Common Equity [Abstract] Common equity Tier 1 Capital Common Equity Tier One Capital Common equity Tier 1 capital under BASEL III Common equity Tier 1 capital, capital ratio Common Equity Tier One Capital to Risk-Weighted Assets Common equity Tier 1 capital ratio is a regulatory capital measure under Basel III calculated based on common equity Tier 1 capital divided by risk-weighted assets. Common equity Tier 1 capital, minimum capital adequacy Tier One Common Capital Required for Capital Adequacy to Risk Weighted Assets Tier One Common Capital Required for Capital Adequacy to Risk Weighted Assets TierOneCommonCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets TierOneCommonCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets Tier One Common Capital Required To Be Well Capitalized To Risk Weighted Assets Tier 1 risk-based capital: Risk Based Ratios [Abstract] Tier 1 capital Tier One Risk Based Capital Tier 1 capital, capital ratio Tier One Risk Based Capital to Risk Weighted Assets Tier 1 capital, minimum capital adequacy Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Tier 1 capital, well-capitalized Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Total risk-based capital: Capital [Abstract] Total capital Capital Total capital, capital ratio Capital to Risk Weighted Assets Total capital, minimum capital adequacy Capital Required for Capital Adequacy to Risk Weighted Assets Total capital, well-capitalized Capital Required to be Well Capitalized to Risk Weighted Assets Tier 1 leverage capital: Tier One Leverage Capital [Abstract] Tier 1 leverage capital Tier One Leverage Capital Tier 1 leverage, capital ratio Tier One Leverage Capital to Average Assets Tier 1 leverage, minimum capital adequacy Tier One Leverage Capital Required for Capital Adequacy to Average Assets Tier 1 leverage, well-capitalized Tier One Leverage Capital Required to be Well Capitalized to Average Assets Tier one capital under BaselIII standardized approach Tier one capital under Basel III standardized approach Tier one capital calculated under Basel III standardized approach Basel III supplementary leverage ratio Basel III supplementary leverage ratio Basel III supplementary leverage ratio calculated based on Tier 1 capital under the Basel III standardized approach divided by total leverage exposure Schedule of Segment Results and Reconciliation Schedule of Segment Reporting Information, by Segment [Table Text Block] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Buildings and improvements Building and Building Improvements [Member] Furniture and equipment Furniture And Equipment [Member] Long lived, depreciable assets, commonly used in workplaces and equipment not directly used in the production process for inventories or facilities. Computers and software Software and Software Development Costs [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Useful Lives, years Property, Plant and Equipment, Useful Life Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Property, Plant and Equipment and Lease Commitments [Abstract] Property, Plant and Equipment and Lease Commitments [Abstract] Schedule of Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] Schedule of Future Minimum Rental Payments for Operating Leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Realized gains (losses): Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments [Abstract] Gross realized gains Available-for-sale Securities, Gross Realized Gains Gross realized losses Available-for-sale Securities, Realized Losses, Excluding Other than Temporary Impairments Net realized gains (losses) gains Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments OTTI recognized in earnings: Other than Temporary Impairment Losses, Investments, Available-for-sale Securities [Abstract] Credit-related OTTI Other than Temporary Impairment, Credit Losses Recognized In Earnings, Additions Other than Temporary Impairment, Credit Losses Recognized In Earnings, Additions Intent to Sell OTTI Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities, Intent to Sell Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities, Intent to Sell Total OTTI recognized in earnings Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities Net securities gains (losses) Available-for-sale Securities, Gross Realized Gain (Loss) Proceeds from sales Proceeds from Sale of Available-for-sale Securities Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract] Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract] Other assets Defined Benefit Plan, Assets for Plan Benefits Other liabilities Pension and Other Postretirement Defined Benefit Plans, Liabilities Net amount recognized as of December 31, Defined Benefit Plan, Amounts Recognized in Balance Sheet Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Derivatives designated as accounting hedges Designated as Hedging Instrument [Member] Derivatives not designated as accounting hedges Not Designated as Hedging Instrument [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest rate contracts Interest Rate Contract [Member] Foreign exchange contracts Foreign Exchange Contract [Member] Other contracts Other Contract [Member] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Fair value hedges Fair Value Hedging [Member] Cash flow hedges Cash Flow Hedging [Member] Net investment hedges Net Investment Hedging [Member] Underlying Asset Class [Axis] Underlying Asset Class [Axis] Underlying Asset Class [Domain] Underlying Asset Class [Domain] MSRs Mortgage Servicing Rights Interest Rate Contracts [Member] Derivative instruments not designated as hedges used to offset changes in the fair value of mortgage servicing rights attributable to interest rate fluctuations. Customer accommodation Customer Accommodation Interest Rate Contracts [Member] Customer oriented interest rate derivatives not designated as hedging instruments. Other interest rate exposures Other Interest Rate Exposures Interest Rate Contracts [Member] Non-customer oriented interest rate derivatives not designated as hedging instruments. Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Notional or Contractual Amount Derivative, Notional Amount Derivative Assets, Gross Amount Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement Derivative Asset, Netting Adjustment Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset Derivative Liability, Netting Adjustment Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset Derivative Assets Derivative Asset Derivative Liability Derivative Liability Credit card loan securitizations Credit Card Receivable [Member] Home loan Residential Mortgage [Member] Total securitization-related VIEs Securitization-Related Variable Interest Entities [Member] Securitization-Related Variable Interest Entities Total Other VIEs Nonsecuritization-Related Variable Interest Entities [Member] Nonsecuritization-Related Variable Interest Entities Carrying Amount of Assets, Consolidated Carrying Amount of Liabilities, Consolidated Variable Interest Entity, Consolidated, Carrying Amount, Liabilities Carrying Amount of Assets, Unconsolidated Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities Variable Interest Entities, nonconsolidated, Carrying amount of Assets included in certain investment structures Variable Interest Entities, nonconsolidated, Carrying amount of Assets included in certain investment structures In certain investment structures, we consolidate a VIE which in turn holds as its primary asset an investment in an unconsolidated VIE. This concept represents the carrying amount of assets related to these investment structures. Variable Interest Entities, nonconsolidated, Carrying amount of liabilities included in certain investment structures Variable Interest Entities, nonconsolidated, Carrying amount of liabilities included in certain investment structures In certain investment structures, we consolidate a VIE which in turn holds as its primary asset an investment in an unconsolidated VIE. This concept represents the carrying amount of liabilities related to these investment structures. Defined Benefit Plan, Net Periodic Benefit Cost [Abstract] Defined Benefit Plan, Net Periodic Benefit Cost [Abstract] Service cost Defined Benefit Plan, Service Cost Interest cost Defined Benefit Plan, Interest Cost Expected return on plan assets Defined Benefit Plan, Expected Return on Plan Assets Amortization of transition obligation, prior service credit, and net actuarial loss (gain) Defined Benefit Obligation, Amortization of (Gains) Losses, Transition Obligations (Assets), and Prior Service Cost (Credit) Defined Benefit Obligation, Amortization of (Gains) Losses, Transition Obligations (Assets), and Prior Service Cost (Credit) Net periodic benefit gain Defined Benefit Plan, Net Periodic Benefit Cost Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] GE Healthcare [Member] GE Healthcare [Member] GE Healthcare [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Payments to Acquire Businesses, Net of Cash Acquired Payments to Acquire Businesses, Net of Cash Acquired Cash Acquired from Acquisition Cash Acquired from Acquisition Business Combination, Total Assets Acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Receivable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Receivable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Receivable Business Combination, Acquired Intangibles Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Goodwill, Acquired During Period Goodwill, Acquired During Period Number of Operating Segments Number of Operating Segments Statement of Financial Position [Abstract] Preferred stock, par value Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Treasury stock, common, shares Treasury Stock, Common, Shares Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract] Loss Sharing Agreement [Member] Loss Sharing Agreement [Member] Loss Sharing Agreement [Member] Expected reimbursement from loss sharing partners Loss Sharing Agreements, Loans and Leases Receivable, Allowance, Covered, Expected Reimbursement Loss Sharing Agreements, Loans and Leases Receivable, Allowance, Covered, Expected Reimbursement Impact to net charge-offs Financing Receivable, Allowance for Credit Losses, Write-downs Impact to provision for credit losses Provision for Loan and Lease Losses Deposits: Deposits [Abstract] Non-interest-bearing deposits Noninterest-bearing Deposit Liabilities Schedule of Short-term Debt [Table] Schedule of Short-term Debt [Table] Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Federal funds purchased and securities loaned or sold under agreements to repurchase Federal Funds Purchased and Securities Sold under Agreements to Repurchase [Member] Short-term Debt [Line Items] Short-term Debt [Line Items] Short-term borrowings Short-term Debt Derivative, Collateral, Obligation to Return Cash Derivative, Collateral, Obligation to Return Cash Derivatives assets(1)(2) Offsetting Derivative Assets [Abstract] Gross Amounts Derivative Asset, Offsetting Financial Instruments Derivative Asset, Fair Value, Gross Liability Derivative Assets, Offsetting Cash Collateral Derivative Asset, Collateral, Obligation to Return Cash, Offset Derivative Asset, Securities Not Netted Derivative Asset, Fair Value of Collateral Net Exposure Derivative Asset, Fair Value, Amount Offset Against Collateral Derivative Asset, Not Subject to Master Netting Arrangement Derivative Asset, Not Subject to Master Netting Arrangement Derivative, Collateral, Obligation to Return Securities Derivative, Collateral, Right to Reclaim Cash Derivative, Collateral, Right to Reclaim Cash Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Domain] Financial Instrument Performance Status [Domain] Performing Performing Financial Instruments [Member] Loan Restructuring Modification [Axis] Loan Restructuring Modification [Axis] Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] Reduced Interest Rate Contractual Interest Rate Reduction [Member] Term Extension Extended Maturity [Member] Balance Reduction Principal Forgiveness [Member] Consumer Portfolio Segment [Member] Consumer Portfolio Segment [Member] Commercial Banking Commercial Portfolio Segment [Member] Class of Financing Receivable, Type [Axis] Class of Financing Receivable, Type [Axis] Class of Financing Receivable, Type [Domain] Class of Financing Receivable, Type [Domain] Auto Automobile Loan [Member] Home loan Retail banking Retail Banking [Member] Any loan or extension of credit to an individual for personal, family, or household. Total commercial lending Commercial Lending [Member] Commercial Lending [Member] Commercial and multifamily real estate Commercial And Multifamily Real Estate [Member] Property that is used for business purposes or multifamily residential. Commercial and industrial Commercial And Industrial [Member] Commercial and industrial. Small-ticket commercial real estate Small Ticket Real Estate [Member] Loans issued to businesses to acquire, develop, construct, improve, or refinance land or a building. Includes but is not limited to commercial mortgage loans and construction financing. Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications [Line Items] Total Loans Modified Financing Receivable, Modifications, Post-Modification Recorded Investment % of TDR Activity Financing Receivable, Modifications, Percentage of Troubled Debt Restructuring Activity Financing Receivable, Modifications, Percentage of Troubled Debt Restructuring Activity Average Rate Reduction Financing Receivable, Modifications, Average Rate Reduction Financing Receivable, Modifications, Average Rate Reduction Average Term Extension (Months) Financing Receivable, Modifications, Average Term Extension Financing Receivable, Modifications, Average Term Extension Gross Balance Reduction Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Municipal bonds Total plan assets Total plan assets [Member] Total plan assets [Member] Assets in fair value hierarchy Defined Benefit Plan, Fair Value of Plan Assets Goodwill and Intangible Assets Disclosure [Abstract] Actual for the year ended Amortization [Abstract] Amortization of intangibles Amortization of Intangible Assets Estimated future amounts for the year ended December 31, Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] 2017 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2018 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Net Carrying Amount Finite-Lived Intangible Assets, Net Equity [Abstract] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Series B Preferred Stock Series B Preferred Stock [Member] Series C Preferred Stock Series C Preferred Stock [Member] Series D Preferred Stock Series D Preferred Stock [Member] Series E Preferred Stock Series E Preferred Stock [Member] Series F Preferred Stock Series F Preferred Stock [Member] Series G Preferred Stock Series G Preferred Stock [Member] Series H Preferred Stock [Member] Series H Preferred Stock [Member] Class of Stock [Line Items] Class of Stock [Line Items] Depository Share, Percent Interest in Preferred Stock Depository Share, Percent Interest in Preferred Stock Depository Share, Percent Interest in Preferred Stock Preferred Stock, Dividend Rate, Percentage Preferred Stock, Dividend Rate, Percentage Redemption Price per Depositary Share (in dollars per share) Preferred Stock, Redemption Price Per Share Number of Depositary Shares (in shares) Preferred Stock, Depositary Shares Issued Preferred Stock, Depositary Shares Issued Preferred Stock, Including Additional Paid in Capital, Net of Discount Preferred Stock, Including Additional Paid in Capital, Net of Discount Preferred Stock, Dividend Payment Rate, Variable Preferred Stock, Dividend Payment Rate, Variable Preferred Stock Dividend Rate, Variable Dividend Basis Spread On Variable Rate The percentage points added to the reference rate to compute the dividend rate. Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Interest Income (Expense) Interest Income (Expense) [Member] Interest Income (Expense) [Member] Other Non-Interest Income Other Non-Interest Income [Member] Other Non-Interest Income [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Gains (losses) recorded in AOCI Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net Gains (losses) reclassified from AOCI into earnings Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net Gains (losses) recognized in earnings due to ineffectiveness Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net Net derivative gains recognized in earnings Derivative, Gain (Loss) on Derivative, Net Income Tax Disclosure [Abstract] Income Tax Contingency [Table] Income Tax Contingency [Table] Nature of Uncertainty [Axis] Nature of Uncertainty [Axis] Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Nature of Uncertainty [Domain] Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Nature of Uncertainty [Domain] Gross Unrecognized Tax Benefits Gross Unrecognized Tax Benefits [Member] The balance of unrecognized tax benefits and changes in the period. Accrued Interest and Penalties Accrued Interest And Penalties [Member] The balance of unrecognized tax benefits and changes in the period. Gross Tax, Interest and Penalties Gross Tax Interest And Penalties [Member] The total of the unrecognized tax benefit and changes in the period and accrued interest and penalties related to the benefit. Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Accrued interest and penalties expense (benefit) related to income taxes included in income tax expense Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Beginning balance Unrecognized Tax Benefits Additions for tax positions related to prior years Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Reductions for tax positions related to prior years due to IRS and other settlements Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Ending balance Portion of balance at December 31, that, if recognized, would impact the effective income tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Income Statement [Abstract] Interest income: Interest and Dividend Income, Operating [Abstract] Loans, including loans held for sale Investment securities Interest and Dividend Income, Securities, Operating Other Other Interest and Dividend Income Total interest income Interest expense: Interest Expense [Abstract] Deposits Interest Expense, Deposits Other borrowings Interest Expense Other Borrowings Interest expense incurred during the reporting period on other borrowings. Total interest expense Net interest income Net interest income after provision for credit losses Non-interest income: Noninterest Income [Abstract] Service charges and other customer-related fees Service Charges and Other Customer-Related Fees Amount of income earned from loan services (including debt and credit protection, over limit, membership and annual fees). Excludes interest income earned on credit card balances and transactions. Interchange fees, net Interchange Fees, Net Revenues earned from switch fees charged to financial institutions for accessing our network to process transactions and other fees, net of reward costs. Gain (Loss) on Sale of Securities, Net Gain (Loss) on Sale of Securities, Net Other Noninterest Income, Other Total non-interest income Non-interest expense: Noninterest Expense [Abstract] Salaries and associate benefits Labor and Related Expense Occupancy and equipment Occupancy, Net Marketing Marketing Expense Professional services Professional and Contract Services Expense Communications and data processing Communications and Information Technology Other Other Noninterest Expense Total non-interest expense Income from continuing operations before income taxes Income tax provision Income from continuing operations, net of tax Net income Net income available to common stockholders Net income per basic common share (in dollars per share) Net income per diluted common share (in dollars per share) Dividends paid per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Capital One Financial Corporation (Parent Company Only) Condensed Financial Information of Parent Company Only Disclosure [Text Block] Fair Value Inputs, Assets, Quantitative Information [Table] Fair Value Inputs, Assets, Quantitative Information [Table] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Foreign government bonds Foreign Government Debt Securities [Member] Derivative assets Derivative Financial Instruments, Assets [Member] Consumer MSRs Servicing Contracts [Member] Retained interest in securitizations Retained Interest [Member] Fair Value Inputs, Assets, Quantitative Information [Line Items] Fair Value Inputs, Assets, Quantitative Information [Line Items] Consumer MSRs Servicing Asset at Fair Value, Amount Retained interests in securitizations Retained Interest, Fair Value Disclosure Yield (percent) Fair Value Inputs, Interest Rate Correlation Interest rate correlation, used as an input to measure fair value. Life of receivables (months) Fair Value Inputs, Life of Receivables Fair Value Inputs, Life of Receivables Constant prepayment rate (percent) Fair Value Inputs, Prepayment Rate Default rate (percent) Fair Value Inputs, Probability of Default Loss severity (percent) Fair Value Inputs, Loss Severity Total prepayment rate (percent) Fair Value Inputs, Total Prepayment Rate Rate at which loans or a loan portfolio are expected to prepay principal balances with consideration of defaults, used as an input to measure fair value Discount rate (percent) Fair Value Inputs, Discount Rate Option adjusted spread rate (percent) Fair Value Inputs, Option Adjusted Spread Rate Fair Value Inputs, Option Adjusted Spread Rate Servicing cost ($ per loan) Fair value Inputs, Servicing Cost Per Loan Fair value Inputs, Servicing Cost Per Loan Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Table] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Table] Impaired Loans Impaired Loans At Acquisition [Member] Loan receivables where evidence exists indicating a deterioration of credit quality since origination and it is probable the Company will be unable to collect all amounts due according to the contractual provisions. Non-Impaired Loans Non Impaired Loans At Acquisition [Member] A long term asset whose expected cash flows to be collected over the life of the loan has not decreased in value to an amount that is less than the amount shown under the cost principal acquired in an acquisition. Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] Accretable yield, beginning balance Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Addition due to acquisition Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Additions Accretion recognized in earnings Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion Reclassifications from nonaccretable differences(1) Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications to Nonaccretable Difference Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications to Nonaccretable Difference Changes in accretable yield for non-credit related changes in expected cash flows(2) Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Increase (Decrease) Due to Non-Credit Related Changes in Expected Cash Flows Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Increase (Decrease) Due to Non-Credit Related Changes in Expected Cash Flows Accretable yield, ending balance Stock-Based Compensation Plans Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Investment Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Gpm Mfh [Member] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Loss Sharing Agreement Insurance Claims [Member] Insurance Claims [Member] Loss Contingency, Range of Possible Loss, Portion Not Accrued Loss Contingency, Range of Possible Loss, Portion Not Accrued Guarantee obligation Guarantor Obligations, Current Carrying Value Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount Contractual amounts of standby letters of credit and commercial letters of credit Line of Credit Facility, Maximum Borrowing Capacity Loss contingency accrual Loss accrual increase (decrease) Loss Contingency Accrual, Period Increase (Decrease) Customer Reward Program Customer Loyalty Program Liability Carrying amount as of the balance sheet date of liability related to rewards benefits earned by card holders. Loan Commitment and Origination Fees and Discounts or Premiums, Amortization Period Loan Commitment and Origination Fees and Discounts or Premiums, Amortization Period Loan Commitment and Origination Fees and Discounts or Premiums, Amortization Period Partnership Agreement Initial Term Partnership Agreement Initial Term Partnership agreement initial term. Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Loans Held for Investment Loans Held For Investment [Member] Loans held for investment. Appraisal Value Appraisal Value [Member] Appraisal value. 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] Non-recoverable rate Fair Value Inputs Non Recoverable Rate Amount cannot be recovered through foreclosure or bankruptcy procedures in event of a default, expressed as a percentage of face value. Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Stock Option Employee Stock Option [Member] Warrant Warrant [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Anti-dilutive options excluded from the computation of diluted earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Minimum exercise price range Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit Maximum exercise price range Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit Warrants outstanding Class of Warrant or Right, Outstanding Unused lines of Credit [Member] Unused lines of Credit [Member] Other Unallocated Financing Receivables [Member] Other Portfolio Segments, Excluding Credit Card Other Portfolio Segments, Excluding Credit Card [Member] Other Portfolio Segments, Excluding Credit Card [Member] Home Loans Consumer Home Loan [Member] Home loan portfolio segment. Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other Assets Other Assets [Member] Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Criticized Criticized [Member] Noncriticized Pass [Member] Pledged Financial Instruments, Not separately reported, Loans Receivable, for Federal Home Loan Bank Debt, UPB Pledged Financial Instruments, Not separately reported, Loans Receivable, for Federal Home Loan Bank Debt, UPB Pledged Financial Instruments, Not separately reported, Loans Receivable, for Federal Home Loan Bank Debt, Unpaid Principle Balance Unused Commitments to Extend Credit Unused Commitments to Extend Credit Loans held for sale Loans Receivable Held-for-sale, Net, Not Part of Disposal Group Mortgage loans in process of foreclosure Mortgage Loans in Process of Foreclosure, Amount Threshold Period Past Due for Entering Foreclosure Process Status of Financing Receivables Threshold Period Past Due for Entering Foreclosure Process Status of Financing Receivables Threshold period past due for entering foreclosure process status of financing receivables Real estate acquired through foreclosure Real Estate Acquired Through Foreclosure Minimum loan amount reviewed quarterly by management for further deterioration Loans and Leases Receivable, Minimum Individual Loan Balance Requiring Quarterly Review Loans and Leases Receivable, Minimum Individual Loan Balance Requiring Quarterly Review Minimum loan amount requiring annual review Loans and Leases Receivable, Minimum Individual Loan Balance Requiring Annual Review Loans and Leases Receivable, Minimum Individual Loan Balance Requiring Annual Review Troubled debt restructurings included in impaired loans Financing Receivable, Modifications, Recorded Investment Advised Line of Credit Advised Line of Credit The contractual amount of line of credit that drawings are subject to our satisfactory evaluation of the customer and are cancelable upon proper notice. Uncollectible Portion of Billed Finance Charges and Fees Uncollectible Portion of Billed Finance Charges and Fees Uncollectible Portion of Billed Finance Charges and Fees Finance Charge And Fees Reserves Finance Charge And Fees Reserves Finance charge and fees reserves. Payments for Origination of Mortgage Loans Held-for-sale Payments for Origination of Mortgage Loans Held-for-sale Loans Sold, Percent Retained Servicing Loans Sold, Percent Retained Servicing Loans Sold, Percent Retained Servicing Loans and Leases Receivable, Impaired, Commitment to Lend Loans and Leases Receivable, Impaired, Commitment to Lend Additional Collateral, Independent Margin Additional Collateral, Independent Margin Additional Collateral, Independent Margin Derivative net liability position (less than $1 million) Derivative, Net Liability Position, Aggregate Fair Value Cumulative counterparty credit risk valuation adjustment Derivative Credit Risk Valuation Adjustment, Derivative Assets Cumulative credit risk valuation adjustment related to our credit quality (less than $1 million) Derivative Credit Risk Valuation Adjustment, Derivative Liabilities Gain (net after-tax) recorded in AOCI related to derivatives designated as cash flow hedges expected to be reclassified to earnings over the next 12 months Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months Maximum length of time over which forecasted transactions were hedged, years Maximum Length of Time Hedged in Cash Flow Hedge Schedule of Financing Receivables Past Due [Table] Schedule of Financing Receivables Past Due [Table] Financing Receivable, Recorded Investment, Past Due [Line Items] Financing Receivable, Recorded Investment, Past Due [Line Items] 90 Days Past Due and Accruing Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Nonperforming Loans Financing Receivable, Recorded Investment, Nonaccrual Status Percent 90 days past due and still accruing Financing Receivable, Percent 90 Days Past Due and Still Accruing Financing Receivable, Percent 90 Days Past Due and Still Accruing Financing Receivable, Nonaccrual, Percent Past Due Financing Receivable, Nonaccrual, Percent Past Due Earnings Per Common Share Earnings Per Share [Text Block] Statement [Table] Statement [Table] Unsecuritized loans held for investment Loans held in consolidated trusts Variable Interest Entity, Primary Beneficiary [Member] Statement [Line Items] Statement [Line Items] Cash and cash equivalents: Cash and Cash Equivalents [Abstract] Cash and due from banks Cash and Due from Banks Interest-bearing deposits and other short-term investments Interest-bearing Deposits in Banks and Other Financial Institutions Total cash and cash equivalents Restricted cash for securitization investors Restricted Cash and Cash Equivalents Loans held for investment: Loans and Leases Receivable, Net Amount [Abstract] Total loans held for investment Allowance for Loan and Lease losses Loans and Leases Receivable, Allowance Net loans held for investment Loans and Leases Receivable, Net Amount Loans held for sale, at lower of cost or fair value Premises and equipment, net Property, Plant and Equipment, Net Interest receivable Interest Receivable Goodwill Goodwill Total assets Interest payable Interest Payable Total deposits Securitized debt obligations Secured Debt Other debt: Other Debt [Abstract] Other debt. Federal funds purchased and securities loaned or sold under agreements to repurchase Federal Funds Purchased and Securities Sold under Agreements to Repurchase Total other debt Debt, Excluding Secured Debt Debt, Excluding Secured Debt Other liabilities Preferred stock (par value $.01 per share; 50,000,000 shares authorized; 4,475,000 and 3,375,000 shares issued and outstanding as of December 31, 2016 and 2015, respectively) Preferred Stock, Value, Issued Common stock (par value $.01 per share; 1,000,000,000 shares authorized; 653,736,607 and 648,317,395 shares issued as of December 31, 2016 and 2015, respectively, 480,218,547 and 527,259,920 shares outstanding as of December 31, 2016 and 2015, respectively) Common Stock, Value, Issued Additional paid-in capital, net Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Treasury stock, at cost (par value $.01 per share; 173,518,060 and 121,057,475 shares as of December 31, 2016 and 2015, respectively) Treasury Stock, Common, Value Total stockholders’ equity Total liabilities and stockholders’ equity Associate Stock Purchase Plan Associate Stock Purchase Plan [Member] A stock purchase plan under which our associates are eligible to purchase common stock through monthly salary deductions of a maximum of 15% and a minimum of 1% of monthly base pay. Dividend Reinvestment Stock Purchase Plan Dividend Reinvestment Stock Purchase Plan [Member] A dividend reinvestment and stock purchase plan which allows participating stockholders to purchase additional shares of our common stock through automatic reinvestment of dividends or optional cash investments. Employee Stock Option Restricted Stock Restricted Stock [Member] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Cash-Settled Units Cash-Settled Units [Member] Cash-Settled Units [Member] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Number of active stock plans Number of Active Stock Plans Number of Active Stock Plans Shares authorized under plans (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Shares available for grant under plans (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Compensation expense from award Allocated Share-based Compensation Expense Recognized tax benefit from stock-based compensation arrangements Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Maximum contractual term (Years) Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Award vesting period (in years) Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Weighted-average fair value of options granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Unrecognized compensation expense related to unvested awards, options Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options Weighted-average period of recognition of unrecognized compensation costs (Years) Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Total fair value of awards vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Weighted-average fair value of awards granted (in dollars per share) Unrecognized compensation expense related to unvested awards, awards other than options Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options Potential annual reduction in vesting based on performance (percent) Share-based Compensation Arrangement by Share-based Payment Award, Potential Annual Reduction in Vesting Based on Performance, Percentage Share-based Compensation Arrangement by Share-based Payment Award, Potential Annual Reduction in Vesting Based on Performance, Percentage Performance vesting period (in years) Share-based Compensation Arrangement by Share-based Payment Award, Performance Period Share-based Compensation Arrangement by Share-based Payment Award, Performance Period Percentage of target award opportunities Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Target Number of Common Shares Granted Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Target Number of Common Shares Granted Number of common stock trading days required under vesting condition Share-based Compensation Arrangement by Share-based Payment Award, Number of Common Stock Trading Days Preceding the Vesting Date Share-based Compensation Arrangement by Share-based Payment Award, Number of Common Stock Trading Days Preceding the Vesting Date Cash payments to settle awards Employee Service Share-based Compensation, Cash Flow Effect, Cash Used to Settle Awards Minimum percentage of monthly base pay required for the purchase plan Share Based Compensation Arrangement By Share Based Payment Award, Minimum Employee Subscription Rate An entity may opt to disclose the lowest percentage of annual salary that an employee is permitted to utilize with respect to the plan. Maximum percentage of monthly base pay eligible for the purchase plan Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate Percentage of company's match on Associate Stock Purchase Plan contributions by employees (percent) Percentage of Company's match on Associate Stock Purchase Plan contributions Percentage of Company's match on Associate Stock Purchase Plan contributions Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Preferred Stock Preferred Stock [Member] Common Stock Common Stock [Member] Additional Paid-In Capital Additional Paid-in Capital [Member] Retained Earnings Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Treasury Stock Treasury Stock [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance Beginning balance (shares) Shares, Issued Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Common Stock Dividends, Shares Common Stock Dividends, Shares Dividends, Common Stock Dividends, Common Stock Dividends, Share-based Compensation, Stock Dividends, Share-based Compensation, Stock Cash dividends - preferred series Dividends, Preferred Stock, Cash Purchases of treasury stock Treasury Stock, Value, Acquired, Cost Method Issuances of common stock and restricted stock, shares, net of forfeitures Stock Issued During Period, Shares, New Issues and Restricted Stock, Net of Forfeitures (in shares) Stock Issued During Period, Shares, New Issues and Restricted Stock, Net of Forfeitures Issuances of common stock and restricted stock, value, net of forfeitures Stock Issued During Period, Value, New Issues and Restricted Stock, Net of Forfeitures Stock Issued During Period, Value, New Issues and Restricted Stock, Net of Forfeitures Exercise of stock options and warrants, tax effects of exercises and restricted stock vesting, shares Stock Issued During Period, Shares, Stock Options and Warrants Exercised and Restricted Stock Vesting Stock Issued During Period, Shares, Stock Options and Warrants Exercised and Restricted Stock Vesting Exercise of stock options and warrants, tax effects of exercises and restricted stock vesting, value Stock Issued During Period, Value, Stock Options and Warrants Exercised and Restricted Stock Vesting Stock Issued During Period, Value, Stock Options and Warrants Exercised and Restricted Stock Vesting Stock Issued During Period, Shares, New Issues Stock Issued During Period, Shares, New Issues Stock Issued During Period, Value, New Issues Stock Issued During Period, Value, New Issues Compensation expense for restricted stock awards, restricted stock units and stock options Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Ending balance Ending balance (shares) Loans Receivable Loans Receivable [Member] Geographic Concentration Risk Geographic Concentration Risk [Member] Internal Risk Rating Concentration Risk Internal Risk Rating Concentration Risk [Member] Internal Risk Rating Concentration Risk [Member] Northeast Northeast [Member] Northeast US region. Mid-Atlantic Mid Atlantic [Member] Mid-Atlantic US region. South South [Member] South US region. Criticized performing Criticized nonperforming Nonperforming Financial Instruments [Member] Receivables Acquired with Deteriorated Credit Quality [Axis] Receivables Acquired with Deteriorated Credit Quality [Axis] Receivables Acquired with Deteriorated Credit Quality [Domain] Receivables Acquired with Deteriorated Credit Quality [Domain] Receivables Acquired with Deteriorated Credit Quality [Member] Receivables Acquired with Deteriorated Credit Quality [Member] Schedule of Significant Components of Provision for Income Taxes Attributable to Continuing Operations Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Income Tax Provision (Benefit) Reported in Stockholders' Equity Income Tax Effects Allocated Directly To Equity [Table Text Block] Disclosure of the income tax benefit reported in shareholders' equity. Schedule of Effective Income Tax Rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Significant Components of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of Reconciliation of Change in Unrecognized Tax Benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Gains (losses) recognized in earnings on derivatives Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments Gains (losses) recognized in earnings on hedged items Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge Net fair value hedge ineffectiveness gains (losses) Gain (Loss) on Fair Value Hedge Ineffectiveness, Net Gains (losses) on derivatives not designated as accounting hedges Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Net derivative gains recognized in earnings Carrying Amount of Assets and Liabilities of Variable Interest Entities Schedule of Variable Interest Entities [Table Text Block] External Debt and Receivable Balances of Securitization Programs Qualitative and Quantitative Information, Transferor's Continuing Involvement [Table Text Block] GreenPoint Subsidiary GreenPoint Subsidiary [Member] GreenPoint Subsidiary [Member] Litigation Status [Axis] Litigation Status [Axis] Litigation Status [Domain] Litigation Status [Domain] Pending Litigation Pending Litigation [Member] Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] Interchange Litigation Interchange Litigation [Member] Interchange Litigation [Member] U.S. Bank Litigation Us Bank Litigation [Member] GreenPoint is a defendant in a lawsuit wherein plaintiffs allege GreenPoint is obligated to repurchase an entire portfolio of mortgage loans based on alleged breaches of representations and warranties. FHFA Litigation FHFA Litigation [Member] FHFA Litigation [Member] Intellectual Ventures Corp Intellectual Ventures Corp [Member] Intellectual Ventures Corp [Member] Loss contingency, estimate of possible loss Loss Contingency, Estimate of Possible Loss Litigation settlement, attributable to reporting entity and third party Litigation Settlement, Amount Attributable to Reporting Entity and Third Party Litigation Settlement, Amount Attributable to Reporting Entity and Third Party Litigation settlement, attributable to reporting entity and third party, percent of transactions Litigation Settlement, Attributable to Reporting Entity and Third Party, Percent of Transactions Litigation Settlement, Attributable to Reporting Entity and Third Party, Percent of Transactions Litigation settlement, attributable to reporting entity and third party, period of payment of settlement Litigation Settlement, Attributable to Reporting Entity and Third Party, Period of Payment of Settlement Litigation Settlement, Attributable to Reporting Entity and Third Party, Period of Payment of Settlement Number of contracts breached Litigation, Number of Contracts Breached Litigation, Number of Contracts Breached Number of mortgage loans sold to third party under litigation Litigation, Number of Mortgage Loans Sold to Third Party Under Litigation Litigation, Number of Mortgage Loans Sold to Third Party Under Litigation Mortgage loans sold to third party, face amount under litigation Mortgage Loans on Real Estate, Sold to Third Party, Face Amount Under Litigation Mortgage Loans on Real Estate, Sold to Third Party, Face Amount Under Litigation Number of summons filed Litigation, Number of Summons Filed Litigation, Number of Summons Filed Number of residential mortgage backed securities trusts Litigation, Number of Residential Mortgage Backed Securities Trusts Litigation, Number of Residential Mortgage Backed Securities Trusts Number of claims dismissed Loss Contingency, Claims Dismissed, Number Number of patents not infringed Loss Contingency, Patents Found Not Infringed, Number Number of claims pending Loss Contingency, Pending Claims, Number Available-for-sale Securities, Gross Unrealized Loss Available-for-sale Securities, Gross Unrealized Loss Less than 12 Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Less than 12 Months, Gross Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 12 Months or Longer, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 12 Months or Longer, Gross Unrealized Losses Total Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Total Gross Unrealized Losses Debt Security Category [Axis] Debt Security Category [Axis] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain] Available-for-sale Securities Available-for-sale Securities [Member] Securities Held to Maturity Held-to-maturity Securities [Member] Schedule of Investment Portfolio Marketable Securities [Table Text Block] Schedule of Available-for-Sale Securities Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Investment Securities Held to Maturity Held-to-maturity Securities [Table Text Block] Schedule of Available-for-Sale Securities in Gross Unrealized Loss Position Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block] Schedule of Contractual Maturities for Securities Investments Classified by Contractual Maturity Date [Table Text Block] Schedule of Credit Losses Related to Debt Securities Recognized in Earnings Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table Text Block] Schedule of Gross Realized Gains and Losses on Sale and Redemption of Available-for-Sale Securities Recognized in Earnings Schedule of Realized Gain (Loss) [Table Text Block] Schedule of Outstanding Contractual Balance and Carrying Value of Credit-Impaired ING Direct Debt Securities Certain Loans Acquired in Transfer Accounted for as Debt Securities, Outstanding Contractual Balance and Carrying Value [Table Text Block] Certain Loans Acquired in Transfer Accounted for as Debt Securities, Outstanding Contractual Balance and Carrying Value Schedule of Changes in Accretable Yield of Acquired Securities Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement [Table Text Block] Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement Discontinued Operations and Disposal Groups [Abstract] Summary of Results from Discontinued Operations Disposal Groups, Including Discontinued Operations [Table Text Block] Statement of Comprehensive Income [Abstract] After Tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Net unrealized gains (losses) on securities available for sale Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Net changes in securities held to maturity Other Comprehensive Income (Loss), Securities Transferred To Held To Maturity Adjustment, Net Of Tax, Portion Attributable To Parent Other Comprehensive Income (Loss), Securities Transferred To Held To Maturity Adjustment, Net Of Tax, Portion Attributable To Parent Net unrealized gains (losses) on cash flow hedges Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Other Other Comprehensive Income Other, Net Of Tax, Attributable To Parent Other Comprehensive Income Other, Net Of Tax, Attributable To Parent Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Comprehensive income Before Tax Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent [Abstract] Net unrealized gains (losses) on securities available for sale Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax, Portion Attributable to Parent Net changes in securities held to maturity Other Comprehensive Income (Loss) Securities Transferred To Held To Maturity Adjustment Before Tax Portion Attributable To Parent Other Comprehensive Income (Loss) Securities Transferred To Held To Maturity Adjustment Before Tax Portion Attributable To Parent Net unrealized gains (losses) on cash flow hedges Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax, Portion Attributable to Parent Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Portion Attributable to Parent Other Other Comprehensive Income (Loss), Before Tax, Attributable To Parent Other Comprehensive Income (Loss), Other, Before Tax, Attributable To Parent Other comprehensive income before taxes Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Provision (Benefit) Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent, Parenthetical Disclosures [Abstract] Net unrealized gains (losses) on securities available for sale Other Comprehensive Income (Loss), Available-for-sale Securities, Tax, Portion Attributable to Parent Net changes in securities held to maturity Other Comprehensive Income (Loss) Securities Transferred To Held To Maturity Adjustment, Tax, Portion Attributable To Parent Other Comprehensive Income (Loss) Securities Transferred To Held To Maturity Adjustment, Tax, Portion Attributable To Parent Net unrealized gains (losses) on cash flow hedges Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax, Portion Attributable to Parent Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Portion Attributable to Parent Other Other Comprehensive Income (Loss), Other Tax, Attributable To Parent Other Comprehensive Income (Loss), Other Tax, Attributable To Parent Other comprehensive income (loss), provision (benefit) Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Net unrealized gains (losses) on securities available for sale Net changes in securities held to maturity Net unrealized gains (losses) on cash flow hedges Foreign currency translation adjustments Other Home Loans Receivable Home Loans Receivable [Member] Home Loans Receivable [Member] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] Loans excluding Acquired Loans Receivables Excluding Receivables Acquired With Deteriorated Credit Quality [Member] Receivables Excluding Receivables Acquired With Deteriorated Credit Quality [Member] Acquired Loans Origination Year Concentration Risk Origination Year Concentration Risk [Member] Origination Year Concentration Risk [Member] Lien Type Concentration Risk Lien Type Concentration Risk [Member] Lien Type Concentration Risk [Member] Interest Rate Type Concentration Risk Interest Rate Type Concentration Risk [Member] Interest Rate Type Concentration Risk [Member] Mortgage Loan, Origination Year [Axis] Mortgage Loan, Origination Year [Axis] Mortgage Loan, Origination Year [Axis] Mortgage Loan, Origination Year [Domain] Mortgage Loan, Origination Year [Domain] [Domain] for Mortgage Loan, Origination Year [Axis] Origination during or before 2007 Origination during or before 2007 [Member] Origination during or before 2007 [Member] 2008 Origination 2008 [Member] Origination 2008 2009 Origination 2009 [Member] Origination 2009 2010 Origination 2010 [Member] Origination 2010 2011 Origination 2011 [Member] Year six. 2012 Origination 2012 [Member] Origination 2012 2013 Origination 2013 [Member] Origination 2013 2014 Origination 2014 [Member] Origination 2014 2015 Origination 2015 [Member] Origination 2015 [Member] 2016 Origination 2016 [Member] Origination 2016 [Member] Maryland MARYLAND Virginia VIRGINIA Louisiana LOUISIANA Arizona ARIZONA Washington WASHINGTON Lien Category [Axis] Lien Category [Axis] Lien Category [Domain] Lien Category [Domain] 1st lien Senior Lien [Member] 2nd lien Junior Lien [Member] Mortgage Loans on Real Estate, Loan Type [Axis] Mortgage Loans on Real Estate, Loan Type [Axis] Mortgage Loans on Real Estate, Loan Type [Domain] Mortgage Loans on Real Estate, Loan Type [Domain] Fixed rate Fixed Rate Residential Mortgage [Member] Adjustable rate Adjustable Rate Residential Mortgage [Member] US Treasury securities Assets: Assets, Fair Value Disclosure [Abstract] Securities available for sale: Available-for-sale Securities [Abstract] Other assets: Other Assets, Fair Value Disclosure [Abstract] Other Assets, Fair Value Disclosure [Abstract] Other Assets Fair Value, Amount Other Assets Fair Value, Amount Other assets that were recorded at fair value on the consolidated balance sheets, including Consumer Mortgage Servicing rights, Retained interest in securities trust and deferred compensation plan assets Retained interests in securitizations Deferred Compensation Plan Assets Deferred Compensation Plan Assets Total assets Assets, Fair Value Disclosure Liabilities: Financial Liabilities Fair Value Disclosure [Abstract] Total liabilities Financial Liabilities Fair Value Disclosure Derivative Asset Derivative Liabilities Derivative Credit Risk Valuation Adjustment, Derivative Assets (Liabilities) Derivative Credit Risk Valuation Adjustment, Derivative Assets (Liabilities) Derivative Credit Risk Valuation Adjustment, Derivative Assets (Liabilities) Effective Income Tax Rate Reconciliation, Percent [Abstract] Effective Income Tax Rate Reconciliation, Percent [Abstract] Income tax at U.S. federal statutory tax rate State taxes, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Low-income housing, new markets tax credits, and other credits Effective Income Tax Rate Reconciliation, Tax Credit, Percent Other foreign tax differences, net Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent Other, net Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Effective tax rate Effective Income Tax Rate Reconciliation, Percent Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Internal Revenue Service (IRS) Internal Revenue Service (IRS) [Member] State and Local Jurisdiction State and Local Jurisdiction [Member] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Net operating loss carryforwards Operating Loss Carryforwards Increase in valuation allowance to adjust tax benefit of certain state deferred tax assets and net operating loss carryforwards Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Schedule of Computation of Basic and Diluted Earnings Per Common Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Government-sponsored enterprises (“GSEs”) Government Sponsored Enterprises [Member] Includes Fannie Mae, Freddie Mac and the Federal Home Loan banks. Insured Securitizations Insured Securitizations [Member] Insured securitizations of originated mortgage loans sold by subsidiaries. Uninsured Securitizations and Other Uninsured Securitizations And Other Whole Loans Sales [Member] Uninsured securitizations and whole loan sales of originated mortgage loans sold by subsidiaries. Uninsured Securitizations Uninsured Securitizations [Member] Uninsured Securitizations [Member] Private Investors Private Investors [Member] Private investors. Various Known and Unknown Investors Various Known and Unknown Investors [Member] Various Known and Unknown Investors [Member] Mortgage Loan, Origination Period [Axis] Mortgage Loan, Origination Period [Axis] Mortgage Loan, Origination Period [Axis] Mortgage Loan, Origination Period [Domain] Mortgage Loan, Origination Period [Domain] [Domain] for Mortgage Loan, Origination Period [Axis] 2005 to 2008 Year Mortgage Loans Originated between 2005 and 2008 [Member] Mortgage Loans Originated between 2005 and 2008 2008 Mortgage Loans Originated, 2008 [Member] Mortgage Loans Originated, 2008 2007 Mortgage Loans Originated, 2007 [Member] Mortgage Loans Originated, 2007 2006 Mortgage Loans Originated, 2006 [Member] Mortgage Loans Originated, 2006 2005 Mortgage Loans Originated, 2005 [Member] Mortgage Loans Originated, 2005 Number of subsidiaries acquired that originated residential mortgage loans Number of Acquired Subsidiaries that Originated Mortgages Loans and Sold to Third Party The number of subsidiaries acquired that originated and sold residential mortgage loans. Mortgage Loans on Real Estate, Sold to Third Party [Abstract] Mortgage Loans on Real Estate, Sold to Third Party [Abstract] Mortgage Loans on Real Estate, Sold to Third Party [Abstract] Estimated Unpaid Principal Balance Mortgage Loans on Real Estate, Unpaid Principal Balances, Sold to Third Party Mortgage Loans on Real Estate, Unpaid Principal Balances, Sold to Third Party Original Principal Balance Mortgage Loans on Real Estate, Face Amount of Mortgages, Sold to Third Party Mortgage Loans on Real Estate, Face Amount of Mortgages, Sold to Third Party Percent covered by bond insurance Mortgage Loans on Real Estate, Face Amount of Mortgages, Sold to Third Party, Percent Covered by Bond Insurance Original principal balance of mortgage loans originated and sold to non affiliates by subsidiaries between two thousand five and two thousand eight percent. Original principal balance, sold to third party with repurchase requests Mortgage Loans on Real Estate, Face Amount of Mortgages, Sold to Third Party, With Repurchase Requests Mortgage Loans on Real Estate, Face Amount of Mortgages, Sold to Third Party, With Repurchase Requests Original principal balance, sold to third party without repurchase requests Mortgage Loans on Real Estate, Face Amount of Mortgages, Sold to Third Party, Without Repurchase Requests Mortgage Loans on Real Estate, Face Amount of Mortgages, Sold to Third Party, Without Repurchase Requests Unpaid principal balance, delinquent 90 days or greater Mortgage Loans on Real Estate, Sold to Third Party, Unpaid Principal Balance, Delinquent, 90 Days or Greater Original principal balance of mortgage loans under current holders or underlying credit performance. Losses realized by third party Mortgage Loans on Real Estate, Sold to Third Parties, Losses Realized by Third Party Mortgage Loans on Real Estate, Sold to Third Parties, Losses Realized by Third Party Unresolved Repurchase Claims, Face Amount Unresolved Repurchase Claims, Face Amount Unresolved Repurchase Claims, Face Amount Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract] Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract] 2017 Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months 2018 Defined Benefit Plan, Expected Future Benefit Payments, Year Two 2019 Defined Benefit Plan, Expected Future Benefit Payments, Year Three 2020 Defined Benefit Plan, Expected Future Benefit Payments, Year Four 2021 Defined Benefit Plan, Expected Future Benefit Payments, Year Five 2022-2026 Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter Schedule of Preferred Stock Schedule of Stock by Class [Table Text Block] Change in AOCI Gain (Loss) by Component (Net of Tax) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Reclassifications from AOCI Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Components of Other Comprehensive Income (Loss) and Related Tax Impact Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] Allowance for Loans and Lease Losses Allowance for Credit Losses [Text Block] Number of Contracts Financing Receivable, Modifications, Subsequent Default, Number of Contracts Total Loans Financing Receivable, Modifications, Subsequent Default, Recorded Investment Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Groups, Including Discontinued Operations, Name [Domain] Disposal Group Name [Domain] Wholesale Mortgage Banking Unit Wholesale Mortgage Banking Unit [Member] Wholesale Mortgage Banking Unit [Member] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Non-interest income (expense), net Disposal Group, Including Discontinued Operation, Noninterest Income (Expense), Net Disposal Group, Including Discontinued Operation, Noninterest Income (Expense), Net Income (loss) from discontinued operations before income taxes Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Income tax provision (benefit) Discontinued Operation, Tax Effect of Discontinued Operation Income (loss) from discontinued operations, net of tax Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Carrying Amount Reported Value Measurement [Member] Estimated Fair Value Estimate of Fair Value Measurement [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Financial assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Restricted cash for securitization investors Restricted Cash and Cash Equivalents, Fair value Disclosure Restricted Cash and Cash Equivalents, Fair value Disclosure Securities held to maturity Net loans held for investment Loans Receivable, Fair Value Disclosure Loans held for sale Loans Held-for-sale, Fair Value Disclosure Interest receivable Interest Receivable, Fair Value Disclosure This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure and may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. This item represents interest earned but not received as of the balance sheet date. Other investments Cost Method Investments, Fair Value Disclosure Financial liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Deposits Deposits, Fair Value Disclosure Securitized debt obligations Secured Debt, Fair Value Disclosure Secured Debt, Fair Value Disclosure Senior and subordinated notes Unsecured Debt, Fair Value Disclosure Unsecured Debt, Fair Value Disclosure Federal funds purchased and securities loaned or sold under agreements to repurchase Federal Funds Purchased and Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure Other borrowings Other Borrowings Fair Value Disclosure This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure and may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. This item represents the aggregate of other miscellaneous borrowings owed by the company as of the balance sheet date. Interest payable Interest Payable Fair Value Disclosure This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure and may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. This item represents accrued interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid as of the balance sheet date. Defined Benefit Plan, Amount to be Amortized from Accumulated Other Comprehensive Income (Loss) Next Fiscal Year [Abstract] Defined Benefit Plan, Amount to be Amortized from Accumulated Other Comprehensive Income (Loss) Next Fiscal Year [Abstract] Prior service cost Defined Benefit Plan, Future Amortization of Prior Service Cost (Credit) Net actuarial gain (loss) Defined Benefit Plan, Future Amortization of Gain (Loss) Net gain (loss) Defined Benefit Plan, Amount to be Amortized from Accumulated Other Comprehensive Income (Loss) Next Fiscal Year Income Tax Effects Allocated Directly to Equity [Abstract] Income Tax Effects Allocated Directly to Equity [Abstract] Income tax provision (benefit) recorded in AOCI (1) Income Tax Effects Allocated Directly to Equity, Employee Stock Options Income tax provision (benefit) recorded in additional paid in capital Income Tax Effects Allocated Directly to Equity, Other Foreign currency translation gains Income Tax Effects Allocated Directly to Equity, Foreign Currency Translation Gain (Loss) Income Tax Effects Allocated Directly to Equity, Foreign Currency Translation Gain (Loss) Total income tax provision (benefit) recorded in stockholders’ equity Income Tax Effects Allocated Directly to Equity Defined Contribution Plan [Table] Defined Contribution Plan [Table] Defined Contribution Plan Name [Axis] Defined Contribution Plan Name [Axis] Defined Contribution Plan Name [Domain] Defined Contribution Plan Name [Domain] Associate Savings Plan Associate Savings Plan [Member] Associate Savings Plan [Member] Defined Contribution Plan Disclosure [Line Items] Defined Contribution Plan Disclosure [Line Items] Defined contribution plan, age eligible to participate Defined Contribution Plan, Age Eligible to Participate Defined Contribution Plan, Age Eligible to Participate Defined contribution plan, cost Defined Contribution Plan, Cost Recognized Shares Subject to Options (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Outstanding as of beginning of the period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Expired Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Outstanding as of end of the period Exercisable as of end of the period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Weighted- Average Exercise Price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Outstanding as of beginning of the period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Granted Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Exercised Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Forfeited Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Expired Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Outstanding as of end of the period Exercisable as of end of the period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted-Average Remaining Contractual Term, Outstanding at end of period, years Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Weighted-Average Remaining contractual Term Exercisable, at end of period years Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Aggregate Intrinsic Value, Outstanding, at end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Aggregate Intrinsic Value, Exercisable, at end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Fair Value Measurement Fair Value Disclosures [Text Block] Carrying Value Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract] Due after 1 year through 5 years Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount Due after 5 years through 10 years Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount Due after 10 years Held-to-maturity Securities, Debt Maturities, after Ten Years, Net Carrying Amount Fair Value Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Fair Value, Rolling Maturity [Abstract] Due after 1 year through 5 years Held-to-maturity Securities, Debt Maturities, Year Two Through Five, Fair Value Due after 5 years through 10 years Held-to-maturity Securities, Debt Maturities, Rolling Year Six Through Ten, Fair Value Due after 10 years Held-to-maturity Securities, Debt Maturities, Rolling after Ten Years, Fair Value Deposits and Borrowings Debt and Deposit Liabilities Disclosures [Text Block] Information about short-term and long-term debt arrangements, including amounts of borrowings, repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements. Also includes the entire disclosure for deposit liabilities including data and tables. Loans held for investment Gain (Loss) On Fair Value Loans Held For Investment Recognized In Earnings Gain (Loss) On Fair Value Loans Held For Investment Recognized In Earnings Loans held for sale Gain (Loss) On Fair Value Loans Held For Sale Recognized In Earnings Gain (Loss) On Fair Value Loans Held For Sale Recognized In Earnings Other assets Gain (Loss) On Fair Value Other Assets Recognized In Earnings Gain (Loss) On Fair Value Other Assets Recognized In Earnings Total Gain (Loss) On Fair Value Assets Recognized In Earnings Gain (Loss) On Fair Value Assets Recognized In Earnings Qualitative and Quantitative Information, Transferor's Continuing Involvement [Table] Qualitative and Quantitative Information, Transferor's Continuing Involvement [Table] Variable Interest Entity, Primary Beneficiary Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items] Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items] Securities held by third-party investors, non-mortgage Continuing Involvement with Continued to be Recognized Transferred Financial Assets, Liabilities Incurred Continuing Involvement with Continued to be Recognized Transferred Financial Assets, Liabilities Incurred Receivables in the trust, non-mortgage Continuing Involvement with Continued to be Recognized Transferred Financial Assets, Amount Outstanding Receivables in the trust, mortgage Cash balance of spread or reserve accounts, non-mortgage Continuing Involvement with Continued to be Recognized Transferred Financial Assets, Cash Balance in Spread and Reserve Accounts Continuing Involvement with Continued to be Recognized Transferred Financial Assets, Cash Balance in Spread and Reserve Accounts Cash balance of spread or reserve accounts, mortgage Continuing Involvement with Derecognized Transferred Financial Assets, Cash Balance of Reserve or Spread Accounts Continuing Involvement with Derecognized Transferred Financial Assets, Cash Balance of Reserve or Spread Accounts Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statements, Captions [Line Items] Condensed Cash Flow Statements, Captions [Line Items] Operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) to net cash provided by operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Equity in undistributed earnings of subsidiaries Equity in undistributed Net Income including Discontinued Ops Equity in undistributed Net Income (loss) of subsidiaries and Net income (loss) from Discontinued Ops Attributable to Parent Other operating activities Other Operating Activities, Cash Flow Statement Net cash from operating activities Net Cash Provided by (Used in) Operating Activities Investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Net payments (to) from subsidiaries Increase (Decrease) in Investment in Subsidiaries Increase (Decrease) in Investment in Subsidiaries Proceeds from paydowns and maturities of securities available for sale Proceeds from Sale and Maturity of Available-for-sale Securities Purchase of securities available for sale Payments to Acquire Available-for-sale Securities Changes in loans to subsidiaries Increase (Decrease) in Loans to Subsidiaries Increase (Decrease) in Loans to Subsidiaries Net cash from investing activities Net Cash Provided by (Used in) Investing Activities Financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Changes in borrowings from subsidiaries Increase (Decrease) in Borrowings From Subsidiaries Increase (Decrease) in Borrowings From Subsidiaries Proceeds from issuance of senior notes and sub notes Proceeds from issuance of senior notes and sub notes Proceeds from issuance of senior notes and sub notes Proceeds from paydowns and maturities of senior and subordinated notes Maturities of Senior Debt Common Stock Common Stock, Financing Activities [Abstract] Common Stock, Financing Activities [Abstract] Net proceeds from issuances Proceeds from Issuance of Common Stock Dividends paid Payments of Ordinary Dividends, Common Stock Preferred Stock Preferred Stock, Financing Activities [Abstract] Preferred Stock, Financing Activities [Abstract] Net proceeds from issuances Proceeds from Issuance of Preferred Stock and Preference Stock Dividends paid Payments of Ordinary Dividends, Preferred Stock and Preference Stock Purchases of treasury stock Payments for Repurchase of Common Stock Proceeds from share-based payment activities Proceeds from Stock Plans Net cash from financing activities Net Cash Provided by (Used in) Financing Activities Changes in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of the period Cash and cash equivalents at end of the period Regulatory and Capital Adequacy Regulatory Capital Requirements under Banking Regulations [Text Block] Summary of Stock Option Activity Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Summary of Stock Options Cash Flow Impact Schedule of Cash Proceeds Received from Share-based Payment Awards [Table Text Block] Weighted Average Assumptions Used to value Stock Options Granted Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Summary of Activity for Restricted Stock Awards and Units Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Schedule of Activity for Performance Share and Performance Units Share-based Compensation, Performance Shares and Performance Units Award Unvested Activity [Table Text Block] Share-based Compensation, Performance Shares and Performance Units Award Unvested Activity [Table Text Block] Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract] Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract] Prior service cost Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax Net actuarial loss (gain) Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Gains (Losses), before Tax Accumulated other comprehensive (loss) income Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax Assumptions for benefit obligations at measurement date: Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract] Discount rate Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Assumptions for periodic benefit cost for the year ended: Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] Discount rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Expected long-term rate of return on plan assets Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets Assumptions for year-end valuations: Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract] Health care cost trend rate assumed for next year, pre-age 65 Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year, Pre Age 65 Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year, Pre Age 65 Health care cost trend rate assumed for next year, post-age 65 Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year, Post Age 65 Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year, Post Age 65 Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) Defined Benefit Plan, Ultimate Health Care Cost Trend Rate Year the rate reaches the ultimate trend rate Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate Schedule of Goodwill [Table] Schedule of Goodwill [Table] Goodwill [Line Items] Goodwill [Line Items] Goodwill [Roll Forward] Goodwill [Roll Forward] Goodwill, Beginning Balance Other adjustments Goodwill, Other Increase (Decrease) Goodwill, Ending Balance Summary of Significant Accounting Policies Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Customer Net Revenue Range Customer Net Revenue Range Range of annual net revenue for our commercial and industrial customers. Change in benefit obligation: Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Defined benefit obligation Defined Benefit Plan, Accumulated Benefit Obligation Benefits paid Defined Benefit Plan, Benefits Paid Net actuarial loss (gain) Defined Benefit Plan, Actuarial Gain (Loss) Change in plan assets: Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Fair value of plan assets as of January 1, Actual return on plan assets Defined Benefit Plan, Actual Return on Plan Assets Employer contributions Defined Benefit Plan, Contributions by Employer Benefits paid Fair value of plan assets as of December 31, Over (under) funded status as of December 31, Defined Benefit Plan, Funded Status of Plan Income Taxes Income Tax Disclosure [Text Block] Land Land [Member] Computer software In progress Construction in Progress [Member] Total premises and equipment, gross Property, Plant and Equipment, Gross Less: Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Total premises and equipment, net Active Insured Securitizations and GSEs Gses And Active Insured Securitizations [Member] Government sponsored enterprises and purchasers who placed loans into private-label securitizations supported by financial guaranty bond insurers that have made repurchase requests. Inactive Insured Securitizations and Others Inactive Insured Securitizations And Other [Member] Purchasers who placed the loans into private-label securitizations supported by financial guaranty bond insurers where the bond insurer is not currently making repurchase requests and other whole loan purchasers. Loans sold 2005 to 2008 Reserve liability Loss Contingency Accrual, Provision Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] 2017 Operating Leases, Future Minimum Payments Due, Next Twelve Months 2018 Operating Leases, Future Minimum Payments, Due in Two Years 2019 Operating Leases, Future Minimum Payments, Due in Three Years 2020 Operating Leases, Future Minimum Payments, Due in Four Years 2021 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total Operating Leases, Future Minimum Payments Due Goodwill [Member] Goodwill [Member] Impairment of Intangible Assets Impairment of Intangible Assets (Excluding Goodwill) Goodwill accumulated impairment Goodwill, Impaired, Accumulated Impairment Loss Goodwill impairment loss Goodwill, Impairment Loss Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Accumulated Net Unrealized Investment Gain (Loss) Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Cash Flow Hedges Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Other Accumulated Other Comprehensive Income (Loss), Other Component [Member] Accumulated other comprehensive income or loss from pension, other postretirement benefit plans, and others. Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Member] Reclassification out of Accumulated Other Comprehensive Income [Member] Securities Available for Sale Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Non-interest income Non-interest income - OTTI Interest income Amortized Cost Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Rolling Maturity [Abstract] Due in 1 year or less Available-for-sale Securities, Debt Maturities, Next Rolling Twelve Months, Amortized Cost Basis Due after 1 year through 5 years Available-for-sale Securities, Debt Maturities, Rolling Year Two Through Five, Amortized Cost Basis Due after 5 years through 10 years Available-for-sale Securities, Debt Maturities, Rolling Year Six Through Ten, Amortized Cost Basis Due after 10 years Available-for-sale Securities, Debt Maturities, Rolling after Year Ten, Amortized Cost Basis Fair Value Available-for-sale Securities, Debt Maturities, Fair Value, Rolling Maturity [Abstract] Due in 1 year or less Available-for-sale Securities, Debt Maturities, Next Rolling Twelve Months, Fair Value Due after 1 year through 5 years Available-for-sale Securities, Debt Maturities, Rolling Year Two Through Five, Fair Value Due after 5 years through 10 years Available-for-sale Securities, Debt Maturities, Rolling Year Six Through Ten, Fair Value Due after 10 years Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Foreign Currency Translation Adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI beginning balance Other comprehensive income (loss) before reclassifications Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Net realized (gains) losses reclassified from AOCI into earnings Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Other comprehensive income (loss), net of tax AOCI ending balance Business Segments Segment Reporting Disclosure [Text Block] Current income tax provision: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal taxes Current Federal Tax Expense (Benefit) State taxes Current State and Local Tax Expense (Benefit) International taxes Current Foreign Tax Expense (Benefit) Total current provision Current Income Tax Expense (Benefit) Deferred income tax (benefit) provision: Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal taxes Deferred Federal Income Tax Expense (Benefit) State taxes Deferred State and Local Income Tax Expense (Benefit) International taxes Deferred Foreign Income Tax Expense (Benefit) Total deferred (benefit) provision Deferred Income Tax Expense (Benefit) Income tax provision (benefit) Pre-tax earnings from foreign operations Income (Loss) from Continuing Operations before Income Taxes, Foreign Other Portfolio Segments, Excluding Credit Card Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Letter of Credit [Member] Letter of Credit [Member] Line of Credit Facility, Maximum Borrowing Capacity off-balance sheet lending commitment carrying value off-balance sheet lending commitment carrying value The carrying value of off-balance sheet lending-related financial instruments (e.g., commitments and guarantees), which represents the allowance for lending-related commitments, deferred revenue and the guarantee liability. Letter of credit issued contractual amount and unused commitment to extend credit Letter of credit issued contractual amount and unused commitment to extend credit Letter of credit issued contractual amount and unused commitment to extend credit Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] Credit loss component, beginning of period Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held Additions: Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions [Abstract] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions Initial credit impairment Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment Subsequent credit impairment Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses Total additions Reductions due to payoffs, disposals, transfers and other Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions Credit loss component, end of period Domestic Equity Domestic Equity Securities [Member] Domestic Equity Securities [Member] International Equity Foreign Equity Securities [Member] Foreign Equity Securities [Member] Fixed Income Securities Fixed Income Securities [Member] Asset allocation targets Defined Benefit Plan, Target Plan Asset Allocations Asset allocation targets, minimum Defined Benefit Plan, Target Plan Asset Allocations Range Minimum Asset allocation targets, maximum Defined Benefit Plan, Target Plan Asset Allocations Range Maximum Contributions are expected to be made Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year Related Party Transactions [Abstract] Related Party Transactions Related Party Transactions Disclosure [Text Block] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Total Allowance Allowance for Loan and Lease Losses [Member] Unfunded Lending Commitments Reserve Unfunded Loan Commitment [Member] Combined Allowance & Unfunded Reserve Combined Allowance And Unfunded Reserve [Member] Combined allowance and unfunded reserve. Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Allowance for Loan and Lease Losses [Roll Forward] Allowance for Loan and Lease Losses [Roll Forward] Balance as beginning of the period Provision (benefit) for loan and lease losses Charge-offs Allowance for Loan and Lease Losses, Write-offs Recoveries Allowance for Loan and Lease Loss, Recovery of Bad Debts Net charge-offs Allowance for Loan and Lease Losses Write-offs, Net Other changes Allowance for Loan and Lease Losses, Adjustments, Other Balance at end of the period Net charge-offs Percentage annualized net charge-off by average loans held for investment Percentage Annualized Net Charge-Offs by Average Loans Held for Investment Percentage Annualized Net Charge-Offs by Average Loans Held for Investment Loans Loans, Notes, Trade and Other Receivables, Excluding Allowance for Credit Losses [Text Block] Deferred tax assets: Deferred Tax Assets, Net of Valuation Allowance [Abstract] Allowance for loan and lease losses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses Rewards programs Deferred Tax Assets, Rewards Programs Deferred tax assets rewards programs Security and loan valuations Deferred Tax Assets, Security and Loan Valuations Deferred tax assets security and loan valuations. Goodwill and intangibles Deferred Tax Assets, Goodwill and Intangible Assets Compensation and employee benefits Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits Representation and warranty reserve Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Warranty Reserves Net operating loss and tax credit carryforwards Deferred Tax Assets, Operating Loss Carryforwards and Tax Credit Carryforward Amount before allocation of valuation allowances of deferred tax asset attributable to operating loss and tax credit carryforwards. Unearned income Deferred Tax Assets, Deferred Income Net unrealized losses on derivatives Deferred Tax Assets, Derivative Instruments Other assets Deferred Tax Assets, Other Subtotal Deferred Tax Assets, Gross Valuation allowance Deferred Tax Assets, Valuation Allowance Total deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Deferred tax liabilities: Deferred Tax Liabilities, Gross [Abstract] Original issue discount Deferred Tax Liabilities, Original Issue Discount The amount as of the balance sheet date of the estimated future tax effects attributable to interchange, late fees, cash advance fees and over limit fees. These items are generally treated as original issue discount ("OID") for tax purposes and recognized over the life of the related credit card receivables. Fixed assets and leases Deferred Tax Liabilities, Property, Plant and Equipment Deferred Tax Liabilities, Derivatives Deferred Tax Liabilities, Derivatives Other liabilities Deferred Tax Liabilities, Other Total deferred tax liabilities Deferred Tax Liabilities, Gross Net deferred tax assets Deferred Tax Assets, Net Condensed Income Statement Condensed Income Statement [Table Text Block] Condensed Balance Sheet Condensed Balance Sheet [Table Text Block] Condensed Cash Flow Statement Condensed Cash Flow Statement [Table Text Block] Georgia GEORGIA Commitments, Contingencies, Guarantees, and Others Commitments Contingencies and Guarantees [Text Block] Deposits and Borrowings [Table] Deposits and Borrowings [Table] Deposits and Borrowings [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Senior notes Senior Notes [Member] Subordinated notes Subordinated Debt [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Total unsecured senior debt Unsecured Senior Debt [Member] Unsecured senior debt. Floating unsecured senior debt Floating Unsecured Senior Debt [Member] Floating unsecured senior debt. Fixed unsecured senior debt Fixed Unsecured Senior Debt [Member] Fixed unsecured senior debt. Deposits And Borrowings [Line Items] Deposits And Borrowings [Line Items] Deposits and borrowings. Domestic time deposits Interest-bearing Domestic Deposit, Time Deposits Time Deposits, $100,000 or More Time Deposits, $100,000 or More Interest-bearing Deposit Liabilities, Foreign Interest-bearing Deposit Liabilities, Foreign Proceeds from Issuance of Secured Debt Proceeds from Issuance of Secured Debt Maturities of secured debt Maturities of Secured Debt Secured debt maturities over the period. Fair value hedging losses Debt Instrument, Fair Value Hedging Losses Debt Instrument, Fair Value Hedging Losses Proceeds from issuance of unsecured debt Proceeds from Issuance of Unsecured Debt Repayments of Unsecured Debt Repayments of Unsecured Debt Federal Home Loan Bank Stock and Federal Reserve Bank Stock Federal Home Loan Bank Stock and Federal Reserve Bank Stock Advances from Federal Home Loan Banks Advances from Federal Home Loan Banks Sum of investment in Federal Reserve stock used as security with Federal Reserve Federal Reserve Bank Stock Loss Contingency Accrual Unresolved Repurchase Claims [Roll Forward] Unresolved Repurchase Claims [Roll Forward] Unresolved Repurchase Claims [Roll Forward] Open claims, beginning balance Gross new demands received Unresolved Repurchase Claims, New Demands Received Unresolved Repurchase Claims, New Demands Received Loans repurchased/made whole Unresolved Repurchase Claims, Repurchased or Made Whole Unresolved Repurchase Claims, Repurchased or Made Whole Demands rescinded Unresolved Repurchase Claims, Demands Rescinded Unresolved Repurchase Claims, Demands Rescinded Open claims, ending balance Schedule of Changes in Benefit Obligation and Plan Assets Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block] Schedule of Amounts Recognized in Balance Sheet Schedule of Amounts Recognized in Balance Sheet [Table Text Block] Schedule of Net Periodic Benefit Cost Schedule of Net Benefit Costs [Table Text Block] Schedule of Changes Recognized in Accumulated Other Comprehensive Income Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] Schedule of Pre-Tax Amounts in Accumulated Other Comprehensive Income Schedule of Net Periodic Benefit Cost Not yet Recognized [Table Text Block] Schedule of Pre-Tax Amount In Accumulated Other Comprehensive Income That Are Expected To Be Recognized Of Net Periodic Benefit Cost Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year [Table Text Block] Schedule Of Weighted Average Assumptions Used in Accounting for Plans Schedule of Assumptions Used and Health Care Cost Trend Rates [Table Text Block] Schedule of Assumptions Used and Health Care Cost Trend Rates Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block] Schedule of Allocation of Plan Assets Schedule of Allocation of Plan Assets [Table Text Block] Schedule of Expected Future Benefit Payments Schedule of Expected Benefit Payments [Table Text Block] Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Dividend yield (percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Volatility (percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Risk-free interest rate (percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Expected option lives (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Nonrecurring Fair Value, Measurements, Nonrecurring [Member] Other Assets, Fair Value Disclosure Other Assets, Fair Value Disclosure Total Assets, Fair Value Disclosure, Nonrecurring Foreclosed Properties and Repossessed Assets Other Real Estate, Foreclosed Assets, and Repossessed Assets Long Lived Assets Held for Sale Assets Held-for-sale, Long Lived, Fair Value Disclosure Condensed Income Statement [Table] Condensed Income Statement [Table] Condensed Income Statements, Captions [Line Items] Condensed Income Statements, Captions [Line Items] Interest from temporary investments Dividends from Subsidiaries Dividends from Subsidiaries Dividends from Subsidiaries Income before income taxes and equity in undistributed earnings of subsidiaries Income (Loss) from Continuing Operations before Equity in Undistributed Earnings of Subsidiaries Income (Loss) from Continuing Operations before Equity in Undistributed Earnings of Subsidiaries Income tax (benefit) Income (loss) from subsidiary including discontinued operations, net of tax Income (loss) from subsidiary including discontinued operations, net of tax Income (loss) from subsidiary including discontinued operations, net of tax Other Comprehensive Income (Loss), Net of Tax Other Comprehensive Income (Loss), Net of Tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent Allowance for Credit Losses on Financing Receivables Allowance for Credit Losses on Financing Receivables [Table Text Block] Schedule of Loss sharing arrangement impact Schedule of Loss sharing arrangement impact [Table Text Block] Schedule of Loss sharing arrangement impact [Table Text Block] Schedule of Intangible Assets by Major Class [Table] Schedule of Intangible Assets by Major Class [Table] Schedule of Intangible Assets by Major Class [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] PCCR intangibles Customer Relationships [Member] Core deposit intangibles Core Deposits [Member] Other Intangible Assets [Member] Other Intangible Assets [Member] Intangible Assets by Major Class [Axis] Intangible Assets by Major Class [Axis] Intangible Assets by Major Class [Axis] Intangible Assets by Major Class [Domain] Intangible Assets by Major Class [Domain] Intangible Assets by Major Class [Domain] Schedule of Intangible Assets by Major Class [Line Items] Schedule of Intangible Assets by Major Class [Line Items] [Line Items] for Schedule of Intangible Assets by Major Class [Table] Goodwill, Gross Goodwill, Gross Intangible Assets, Gross (Excluding Goodwill) Intangible Assets, Gross (Excluding Goodwill) Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Intangible Assets, Net (Excluding Goodwill) Intangible Assets, Net (Excluding Goodwill) Intangible Assets Gross Including Goodwill Intangible Assets Gross Including Goodwill Intangible Assets Gross Including Goodwill Total goodwill and other intangible assets, Net Carrying Value Intangible Assets, Net (Including Goodwill) Commercial MSRs, Gross Mortgage Servicing Asset at Amortized Cost, Gross Mortgage Servicing Asset at Amortized Cost, Gross Commercial MSR, Accumulated Amortization Servicing Asset at Amortized Cost, Accumulated Amortization Servicing Asset at Amortized Cost, Accumulated Amortization Total MSRs, Gross Servicing Asset, Gross Servicing Asset, Gross Servicing Asset at Amortized Cost Servicing Asset at Amortized Cost Total MSRs, Net Servicing Asset Servicing Asset at Amortized Cost, Amortization Servicing Asset at Amortized Cost, Amortization Finite-Lived Intangible Assets, Remaining Amortization Period Finite-Lived Intangible Assets, Remaining Amortization Period Outstanding Balance and Carrying Value of Acquired Securities Certain Loans Acquired in Transfer Accounted for as Debt Securities [Abstract] Outstanding balance Certain Loans Acquired in Transfer Accounted for as Debt Securities, Outstanding Balance Carrying value Certain Loans Acquired in Transfer Accounted for as Debt Securities, Carrying Amount, Net Statement of Cash Flows [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Depreciation and amortization, net Depreciation, Depletion and Amortization, Nonproduction Deferred tax benefit Net (gain) loss on sales of securities available for sale Impairment losses on securities available for sale Gain on sales of loans held for sale Gain (Loss) on Sales of Loans, Net Stock plan compensation expense Share-based Compensation Other noncash income Other Noncash Income Loans held for sale: Increase (Decrease) in Loans Held-for-sale [Abstract] Originations and purchases Payments for Origination and Purchases of Loans Held-for-sale Proceeds from sales and paydowns Proceeds from Sale and Collection of Loans Held-for-sale Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Changes in interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Changes in other assets Increase (Decrease) in Other Operating Assets Changes in interest payable Increase (Decrease) in Interest Payable, Net Changes in other liabilities Increase (Decrease) in Other Operating Liabilities Net change from discontinued operations Cash Provided by (Used in) Operating Activities, Discontinued Operations Investing activities: Securities available for sale: Proceeds from Sale and Maturity of Available-for-sale Securities [Abstract] Purchases Proceeds from paydowns and maturities Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Proceeds from sales Securities held to maturity: Proceeds from Sale and Maturity of Held-to-maturity Securities [Abstract] Purchases Payments to Acquire Held-to-maturity Securities Proceeds from paydowns and maturities Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities Loans: Payments for (Proceeds from) Loans and Leases [Abstract] Net changes in loans held for investment Payments for (Proceeds from) Loans and Leases Principal recoveries of loans previously charged off Proceeds from Recoveries of Loans Previously Charged off Purchases of premises and equipment Payments to Acquire Property, Plant, and Equipment Payments to Acquire Businesses, Net of Cash Acquired Net cash from other investing activities Payments for (Proceeds from) Other Investing Activities Changes in restricted cash for securitization investors Proceeds from (Repayments of) Restricted Cash, Financing Activities Changes in deposits Increase (Decrease) in Deposits Maturities and paydowns of securitized debt obligations Repayments of Secured Debt Issuance of senior and subordinated notes and long-term FHLB advances Proceeds from Issuance of Unsecured Debt and Long Term FHLB Advances, Net of Issuance Cost Proceeds from issuance of senior and sub notes and long term FHLB advances, Net of Issuance Cost Maturities and paydowns of senior and subordinated notes and long-term FHLB advances Repayments of Unsecured Debt and Long Term FHLB Advances The cash outflow to repay senior and subordinated notes and long term FHLB Advances. Changes in other short-term borrowings Proceeds from (Repayments of) Other Debt Common stock: Dividends paid Preferred stock: Net proceeds from issuances Dividends paid Purchases of treasury stock Proceeds from share-based payment activities Changes in cash and cash equivalents Supplemental cash flow information: Supplemental Cash Flow Information [Abstract] Non-cash item: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Net transfers from loans held for investment to loans held for sale Transfer of Portfolio Loans and Leases to Held-for-sale Interest paid Interest Paid Income tax paid Income Taxes Paid Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Derivative Financial Instruments, Liabilities [Member] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Beginning balance Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss) Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Transfers Into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3 Transfers Out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 Ending balance Net Unrealized Gains (Losses) Included in Net Income Related to Assets and Liabilities Still Held Fair Value, Liabilities Measured on Recurring Basis, Change in Unrealized Gain (Loss) Small Business Banking Loans Small Business Banking Loans [Member] Small Business Banking Loans [Member] Other Consumer Loans Other Consumer Loans [Member] Other Consumer Loans [Member] Privileges Revoked Privileges Revoked [Member] Privileges Revoked [Member] Notification of Death Notification of Death [Member] Notification of Death [Member] Chapter Seven Bankruptcy Chapter Seven Bankruptcy [Member] Chapter Seven Bankruptcy [Member] Loan origination fees and direct loan origination costs amortization period Maximum term for loan modification under fixed payment plans Maximum Term For Loan Modification Under Fixed Payment Plans Maximum term for loan modification under fixed payment plans. Threshold period past due for delinquency status of financing receivables Threshold Period Past Due for Delinquency Status of Financing Receivables Threshold Period Past Due for Delinquency Status of Financing Receivables Threshold period past due for nonperforming status of financing receivables Threshold Period Past Due for Nonperforming Status of Financing Receivables Threshold Period Past Due for Nonperforming Status of Financing Receivables Threshold period past due for write-off of financing receivable Threshold Period Past Due for Write-off of Financing Receivable Threshold Period Following Bankruptcy Notice for Write-off of Financing Receivable Threshold Period Following Bankruptcy Notice for Write-off of Financing Receivable Threshold Period Following Bankruptcy Notice for Write-off of Financing Receivable Threshold period of consecutive payments to remove from nonaccrual status Threshold Period of Consecutive Payments to Remove from Nonaccrual Status Threshold Period of Consecutive Payments to Remove from Nonaccrual Status Number of components used to develop allowance for loan and lease losses Number of Components Used to Develop Allowance for Loan and Lease Losses Number of Components Used to Develop Allowance for Loan and Lease Losses Loan Portfolio Composition and Aging Analysis Past Due Financing Receivables [Table Text Block] 90 Plus Day Delinquent Loans Accruing Interest and Nonperforming Loans Schedule of Financing Receivables, Non Accrual Status [Table Text Block] Schedule of Concentration Risk, by Risk Factor, Including Delinquency and Performing Status Schedules of Concentration of Risk, by Risk Factor, Including Delinquency and Performing Status [Table Text Block] Schedules of Concentration of Risk by Risk Factor Including Delinquency and Performing Status [Table Text Block] Schedule of Net Charge-Offs Schedule of Net Charge-Offs and Nonperforming Loans [Table Text Block] Schedule of Net Charge-Offs and Nonperforming Loans [Table Text Block] Schedule of Concentration of Risk, by Risk Factor Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Individually Impaired Loans, Excluding Acquired Loans Impaired Financing Receivables [Table Text Block] TDR Disclosures in Progress Financial Impact of Modification Troubled Debt Restructurings on Financing Receivables [Table Text Block] Outstanding Balance and Carrying Value of Acquired Loans Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Table Text Block] Changes in Accretable Yield on Acquired Loans Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Table Text Block] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule Premises, Equipment & Lease Commitments Property Plant Equipment and Operating Lease Commitments Disclosure [Text Block] Disclosure of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. This includes assets that are purchased or leased. Examples include land, building and production equipment. This disclosure may include a schedule of property, plant and equipment gross, depreciation, and net, accumulated depreciation, depletion, useful lives, and income statement disclosures. Percentage annualized net charge-off by average loans held for investment, excluding loans acquired (as percent) Percentage Annualized Net Charge-Offs by Average Loans Held for Investment, Excluding Loans Acquired Impact Percentage Annualized Net Charge-Offs by Average Loans Held for Investment, Excluding Loans Acquired Impact Nonperforming loans, excluding acquired loans (as percent) Loan Receivable, Nonaccrual, Percent Past Due, Excluding Acquired Loans Loan Receivable, Nonaccrual, Percent Past Due, Excluding Acquired Loans Discontinued Operations Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Schedule of Deposits and Borrowings Maturities [Table] Schedule of Deposits and Borrowings Maturities [Table] Schedule of Deposits and Borrowings Maturities [Table] Long-term and Short-term Debt Type [Axis] Long-term and Short-term Debt Type [Axis] Long-term and Short-term Debt Type [Axis] Long-term and Short-term Debt Type [Domain] Long-term and Short-term Debt Type [Domain] Long-term and Short-term Debt Type [Domain] Securitized debt obligations Secured Debt [Member] Senior and Subordinated Notes Senior And Subordinated Notes [Member] Senior and subordinated notes. FHLB advances FHLB Advance and Capital Lease Obligation [Member] FHLB Advance and Capital Lease Obligation Combined Member Deposits and Borrowings Maturities [Line Items] Deposits and Borrowings Maturities [Line Items] Deposits and Borrowings Maturities [Line Items] Time Deposits, Fiscal Year Maturity: Time Deposits With Contractual Maturity Dates, Fiscal Year Maturity [Abstract] Time Deposits With Contractual Maturity Dates, Fiscal Year Maturity [Abstract] 2017 Time Deposit Maturities With Contractual Maturity Dates, Next Twelve Months Time Deposit Maturities With Contractual Maturity Dates, Next Twelve Months 2018 Time Deposit Maturities With Contractual Maturity Dates, Year Two Time Deposit Maturities With Contractual Maturity Dates, Year Two 2019 Time Deposit Maturities With Contractual Maturity Dates, Year Three Time Deposit Maturities With Contractual Maturity Dates, Year Three 2020 Time Deposit Maturities With Contractual Maturity Dates, Year Four Time Deposit Maturities With Contractual Maturity Dates, Year Four 2021 Time Deposit Maturities With Contractual Maturity Dates, Year Five Time Deposit Maturities With Contractual Maturity Dates, Year Five Thereafter Time Deposit Maturities With Contractual Maturity Dates, After Year Five Time Deposit Maturities With Contractual Maturity Dates, After Year Five Total Time Deposits With Contractual Maturity Dates Time Deposits With Contractual Maturity Dates Debt Fiscal Year Maturity: Debt, Long-term and Short-term, Combined Amount, Fiscal Year Maturity [Abstract] Debt, Long-term and Short-term, Combined Amount, Fiscal Year Maturity [Abstract] 2017 Debt, Long-term and Short-term, Combined Amount, Repayments of Principal in Next Twelve Months Debt, Long-term and Short-term, Combined Amount, Repayments of Principal in Next Twelve Months 2018 Long-term Debt, Maturities, Repayments of Principal in Year Two 2019 Long-term Debt, Maturities, Repayments of Principal in Year Three 2020 Long-term Debt, Maturities, Repayments of Principal in Year Four 2021 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Secured Debt Total Total, Fiscal Year Maturity: Time Deposits Maturities With Contractual Maturity Dates, Debt, Long-term and Short-term, Combined Amount, Fiscal Year Maturity [Abstract] Time Deposits Maturities With Contractual Maturity Dates, Debt, Long-term and Short-term, Combined Amount, Fiscal Year Maturity [Abstract] 2017 Time Deposits Maturities With Contractual Maturity Dates, Debt, Long-term and Short-term, Combined Amount, Maturities, Next Twelve Months Time Deposits Maturities With Contractual Maturity Dates, Debt, Long-term and Short-term, Combined Amount, Maturities, Next Twelve Months 2018 Time Deposits Maturities With Contractual Maturity Dates and Long-Term Debt Maturities, Year Two Time Deposits Maturities With Contractual Maturity Dates and Long-Term Debt Maturities, Year Two 2019 Time Deposits Maturities With Contractual Maturity Dates and Long-Term Debt Maturities, Year Three Time Deposits Maturities With Contractual Maturity Dates and Long-Term Debt Maturities, Year Three 2020 Time Deposits Maturities With Contractual Maturity Dates and Long-Term Debt Maturities, Year Four Time Deposits Maturities With Contractual Maturity Dates and Long-Term Debt Maturities, Year Four 2021 Time Deposits Maturities With Contractual Maturity Dates and Long-Term Debt Maturities, Year Five Time Deposits Maturities With Contractual Maturity Dates and Long-Term Debt Maturities, Year Five Thereafter Time Deposits Maturities With Contractual Maturity Dates and Long-Term Debt Maturities, After Year Five Time Deposits Maturities With Contractual Maturity Dates and Long-Term Debt Maturities, After Year Five Total Time Deposits Maturities With Contractual Maturity Dates and Debt Long term and Short term Combined Amount Time Deposits Maturities With Contractual Maturity Dates and Debt Long term and Short term Combined Amount Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Voting Interest Entities Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block] Equity and Cost Method Investments Equity and Cost Method Investments, Policy [Policy Text Block] Variable Interest Entities Consolidation, Variable Interest Entity, Policy [Policy Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Securities Resale and Repurchase Agreements Repurchase and Resale Agreements Policy [Policy Text Block] Investment Securities Marketable Securities, Policy [Policy Text Block] Loans Finance, Loans and Leases Receivable, Policy [Policy Text Block] Allowance for Loans and Lease Losses Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] Securitization of Loans Transfers and Servicing of Financial Assets, Transfers of Financial Assets, Policy [Policy Text Block] Premises and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Goodwill and Other Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Mortgage Servicing Rights Transfers and Servicing of Financial Assets, Servicing of Financial Assets, Policy [Policy Text Block] Foreclosed Property and Repossessed Assets Finance, Loan and Lease Receivables, Held for Investments, Foreclosed Assets Policy [Policy Text Block] Representation and Warranty Reserve Guarantees, Indemnifications and Warranties Policies [Policy Text Block] Customer Rewards Reserve [Policy Text Block] Customer Rewards Reserve [Policy Text Block] Customer Rewards Reserve [Policy Text Block] Revenue Recognition Revenue Recognition, Policy [Policy Text Block] Stock-based Compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Marketing Expense Advertising Costs, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Derivative Instruments and Hedging Activities Derivatives, Policy [Policy Text Block] Fair Value Fair Value of Financial Instruments, Policy [Policy Text Block] Accounting for Acquisitions Business Combinations Policy [Policy Text Block] New Accounting Standards Adopted New Accounting Pronouncements, Policy [Policy Text Block] Offsetting of Financial Assets and Liabilities Derivatives, Offsetting Fair Value Amounts, Policy [Policy Text Block] Income Tax Examination [Table] Income Tax Examination [Table] Income Tax Examination [Line Items] Income Tax Examination [Line Items] Undistributed earnings of foreign subsidiaries Undistributed Earnings of Foreign Subsidiaries Amount of unrecognized deferred tax liability, bad debt reserve for tax purposes of qualified lender Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Bad Debt Reserve for Tax Purposes of Qualified Lender Bad debt reserve for tax purposes of qualified lender Bad Debt Reserve forTax Purposes of Qualified Lender Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Domain] Financing Receivables, Period Past Due [Domain] Financing Receivables, 30 to 59 Days Past Due [Member] Financing Receivables, 30 to 59 Days Past Due [Member] Financing Receivables, 60 to 89 Days Past Due [Member] Financing Receivables, 60 to 89 Days Past Due [Member] Financing Receivables, Equal to Greater than 90 Days Past Due [Member] Financing Receivables, Equal to Greater than 90 Days Past Due [Member] Financing Receivable, Recorded Investment, Aging [Abstract] Financing Receivable, Recorded Investment, Aging [Abstract] Current Financing Receivable, Recorded Investment, Current Past due Financing Receivable, Recorded Investment, Past Due Financing Receivable, Recorded Investment, Aging, Percent of Total Loan [Abstract] Financing Receivable, Recorded Investment, Aging, Percent of Total Loan [Abstract] Financing Receivable, Recorded Investment, Aging, Percent of Total Loan [Abstract] Financing Receivable, Percent Current Financing Receivable, Percent Current Financing Receivable, Percent Current Total Delinquent Loans (as percent) Financing Receivable, Percent Past Due Total Loans (as percent) Financing Receivable, Percentage of Total Loan Financing Receivable Percentage Of Total Loan Financing Receivable, Gross Financing Receivable, Gross Loans and Leases Receivable, Deferred Income Loans and Leases Receivable, Deferred Income Cash received for options exercised Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options Tax benefit realized for options exercised Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options Components of Goodwill, Intangible Assets and MSRs Schedule of Intangible Assets and Goodwill [Table Text Block] Goodwill Attributable to Business Segments Schedule of Goodwill [Table Text Block] Schedule of Finite-Lived Intangible Assets Amortization Expenses and Future Amortization Expense schedule of finite lived intangible assets Amortization Expenses and Future Amortization Expense [Table Text Block] schedule of finite lived intangible assets amortization expense and future amortization expense Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Derivative Financial Instruments, Assets [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] 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] Beginning balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Total Gains or (Losses) (Realized/Unrealized), Included in Net Income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Total Gains or (Losses) (Realized/Unrealized), Included in OCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Transfers Into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Transfers Out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Ending balance Net Unrealized Gains (Losses) Included in Net Income Related to Assets and Liabilities Still Held Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss) Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of Level 3 Inputs Reconciliation for Assets Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Schedule of Level 3 Inputs Reconciliation for Liabilities Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Schedule of Assets Measured at Fair Value on Recurring Basis Quantitative Information Fair Value Inputs, Assets, Quantitative Information [Table Text Block] Schedule of Liabilities Measured at Fair Value on Recurring Basis Quantitative Information Fair Value Inputs, Liabilities, Quantitative Information [Table Text Block] Schedule of Assets Measured at Fair Value on Nonrecurring Basis Fair Value Measurements, Nonrecurring [Table Text Block] Schedule of Earnings Related to Assets Measured at Fair Value on Nonrecurring Basis Fair Value Assets Measured On Non Recurring Basis Gain Loss Included In Earnings [Table Text Block] Fair Value Assets Measured On Non Recurring Basis Gain Loss Included In Earnings [Table Text Block] Schedule of Fair Value of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Allowance for loan and lease losses by impairment methodology: Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] Collectively evaluated Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Asset-specific Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Financing Receivable, Allowance for Credit Losses Financing Receivable, Allowance for Credit Losses Total allowance for loan and lease losses Loans held for investment by impairment methodology: Held For Investment Loans By Impairment Methodology [Abstract] Held for investment loans by impairment methodology. Collectively evaluated Financing Receivable, Collectively Evaluated for Impairment Asset-specific Financing Receivable, Individually Evaluated for Impairment Allowance as a percentage of period-end loans held for investment Financing Receivable, Allowance for Credit Losses, Percentage of Held for Investment Loans Financing Receivable, Allowance for Credit Losses, Percentage of Held for Investment Loans Schedule of Held-to-maturity Securities [Table] Schedule of Held-to-maturity Securities [Table] Schedule of Held-to-maturity Securities [Line Items] Schedule of Held-to-maturity Securities [Line Items] Amortized Cost Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment Unrealized Losses Recorded in AOCI Unrealized Losses Recorded In AOCI On Held To Maturity Securities Unrealized losses recorded in AOCI on held to maturity securities. Gross Unrealized Gains Held-to-maturity Securities, Accumulated Unrecognized Holding Gain Gross Unrealized Losses Fair Value Collateralized Credit Card Securities [Member] Collateralized Credit Card Securities [Member] Auto Dealer Floor Plan Inventory Loans and Leases Collateralized Auto Dealer Floor Plan Inventory Loans and Leases [Member] Collateralized by auto dealer floor plan inventory loans and leases. Other Asset-backed Securities Portfolio Other Asset-backed Securities Portfolio [Member] Other Asset-backed Securities Portfolio [Member] Investment securities available for sale: Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract] Gross Unrealized Gains Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Non-credit OTTI losses related to non-agency RMBS Selected Quarterly Financial Information Quarterly Financial Information [Text Block] Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Impaired Financing Receivable: Impaired Financing Receivable, Recorded Investment [Abstract] With an Allowance Impaired Financing Receivable, with Related Allowance, Recorded Investment Without an Allowance Impaired Financing Receivable, with No Related Allowance, Recorded Investment Total Recorded Investment Impaired Financing Receivable, Recorded Investment Related Allowance Impaired Financing Receivable, Related Allowance Net Recorded Investment Impaired Financing Receivable, Recorded Investment, Net of Related Allowance Impaired Financing Receivable, Recorded Investment, Net of Related Allowance Unpaid Principal Balance Impaired Financing Receivable, Unpaid Principal Balance Average Recorded Investment Impaired Financing Receivable, Average Recorded Investment Interest Income Recognized Impaired Financing Receivable, Interest Income, Accrual Method Outstanding balance Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance Carrying value Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net Provision for credit losses for Acquired Loans Financing Receivable, Allowance for Credit Losses, Period Increase (Decrease) Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Minimum [Member] Maximum [Member] Total senior and subordinated notes FHLB advances Federal Home Loan Bank Advances [Member] Capital Lease Obligations Capital Lease Obligations [Member] FHLB Advance and Capital Lease Obligation Fixed unsecured subordinated debt Fixed Unsecured Subordinated Debt [Member] Fixed unsecured subordinated debt. Debt Instrument [Line Items] Debt Instrument [Line Items] Debt Instrument, Interest Rate, Stated Percentage Debt Instrument, Interest Rate, Stated Percentage Weighted average interest rate Long-term Debt, Weighted Average Interest Rate Long-term debt Long-term Debt Long-term Debt and Capital Lease Obligations Long-term Debt and Capital Lease Obligations Debt and Capital Lease Obligations Debt and Capital Lease Obligations Depreciation Depreciation, Nonproduction Total rent expenses from continuing operations Operating Leases, Rent Expense Minimum sublease rental income due in future years Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals Regulated Operations [Abstract] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Forecast Scenario, Forecast [Member] Basel III Transition Provisions, Inclusion of AOCI and Intangible Asset Adjustments Basel III Transition Provisions, Inclusion of AOCI and Intangible Asset Adjustments Basel III Transition Provisions, Inclusion of AOCI and Intangible Asset Adjustments Statutory Accounting Practices, Statutory Amount Available for Dividend Payments Statutory Accounting Practices, Statutory Amount Available for Dividend Payments Notional and Fair Values of Derivative Instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Offsetting Assets Offsetting Assets [Table Text Block] Offsetting Liabilities Offsetting Liabilities [Table Text Block] Other Comprehensive Income Location [Axis] Other Comprehensive Income Location [Axis] Other Comprehensive Income Location [Domain] Other Comprehensive Income Location [Domain] Fair Value Hedging and Free-Standing Derivatives Fair Value Hedging and Free-Standing Derivatives [Member] Fair Value Hedging and Free-Standing Derivatives [Member] Cash Flow Hedging and Net Investment Hedging Cash Flow Hedging and Net Investment Hedging [Member] Cash Flow Hedging and Net Investment Hedging [Member] Derivative Instruments, Gain (Loss) Derivative Instruments, Gain (Loss) [Table Text Block] Derivatives liabilities(1)(2) Offsetting Derivative Liabilities [Abstract] Derivative Liabilities, Gross Amount Derivative Liability, Offsetting Financial Instruments Derivative Liability, Fair Value, Gross Asset Derivative Liability, Offsetting Cash Collateral Derivative Liability, Collateral, Right to Reclaim Cash, Offset Derivative Liability, Securities Collateral Not Netted Derivative Liability, Fair Value of Collateral Net Exposure Derivative Liability, Fair Value, Amount Offset Against Collateral Derivative Liability, Not Subject to Master Netting Arrangement Derivative Liability, Not Subject to Master Netting Arrangement Repurchase agreements(3)(4) Offsetting Securities Sold under Agreements to Repurchase [Abstract] Gross Amounts Securities Sold under Agreements to Repurchase, Gross Securities Sold under Agreements to Repurchase, Asset Securities Sold under Agreements to Repurchase, Asset Repurchase Agreement, Collateral, Right To Reclaim Cash, Offset Repurchase Agreement, Collateral, Right To Reclaim Cash, Offset Repurchase Agreement, Collateral, Right To Reclaim Cash, Offset Net Amounts as Recognized Securities Sold under Agreements to Repurchase Offsetting Amounts Not Netted, Collateral Pledged Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities Net Exposure Securities Sold under Agreements to Repurchase, Amount Offset Against Collateral Securities Sold under Agreements to Repurchase, Fair Value of Collateral Securities Sold under Agreements to Repurchase, Fair Value of Collateral