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] Key Associate Stock Plan Key Associate Stock Plan [Member] Key Associate Stock Plan. Financial Advisor Capital Accumulation Award Plan [Member] Financial Advisor Capital Accumulation Award Plan [Member] Financial Advisor Capital Accumulation Award Plan [Member] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Stock-settled Restricted Stock and Restricted Stock Units Stock-settled Restricted Stock and Restricted Stock Units [Member] Stock-settled Restricted Stock and Restricted Stock Units [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Number of vesting installments Share-based Compensation Arrangement by Share-based Payment Award, Number of Vesting Installments Share-based Compensation Arrangement by Share-based Payment Award, Number of Vesting Installments Period vesting of restricted stock units begins Share-based Compensation Arrangement by Share-based Payment Award, Requisite Period from Grant Date prior to Vesting Share-based Compensation Arrangement by Share-based Payment Award, Requisite Period from Grant Date prior to Vesting Share-based compensation expense Allocated Share-based Compensation Expense Tax benefit from compensation expense Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Number of shares authorized Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Restricted Stock Units, grants in period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Options outstanding (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Period of recognition Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Restricted Stock Units, outstanding Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Loans and Leases Receivable Disclosure [Abstract] Schedule of Financing Receivables Past Due [Table] Schedule of Financing Receivables Past Due [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Information by portfolio segment of financing receivables. Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] [Domain] for Information by portfolio segment of financing receivables. Residential Portfolio Segment Residential Portfolio Segment [Member] Consumer Portfolio Segment Consumer Portfolio Segment [Member] Commercial Portfolio Segment Commercial Portfolio Segment [Member] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Carrying Value Reported Value Measurement [Member] Estimate of Fair Value Measurement Estimate of Fair Value Measurement [Member] Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Fully Insured Loans Fully Insured Loans [Member] Fully Insured Loans [Member] Nonperforming Financing Receivable Nonperforming Financing Receivable [Member] Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] Pay option Pay option [Member] Pay Option. Dealer Financial Services Loans Dealer Financial Services Loans [Member] Dealer Financial Services Loans [Member] Unsecured Consumed Lending Loans Unsecured Consumed Lending Loans [Member] Unsecured Consumed Lending Loans [Member] Securities Based Lending Loans Securities Based Lending Loans [Member] Securities Based Lending Loans [Member] Student Loans Student Loans [Member] Student Loans [Member] Other Loans Other Loans [Member] Other Loans [Member] Consumer Finance Loans Consumer Finance Loans [Member] Consumer Finance Loans [Member] Consumer Leases Consumer Leases [Member] Consumer Leases [Member] Consumer Overdrafts Consumer Overdrafts [Member] Consumer Overdrafts [Member] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Federal National Mortgage Association Certificates and Obligations (FNMA) and Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) Federal National Mortgage Association Certificates and Obligations (FNMA) and Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member] Federal National Mortgage Association Certificates and Obligations (FNMA) and Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member] Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Core Portfolio, Residential Financing Receivable Core Portfolio, Residential Financing Receivable [Member] Core Portfolio, Residential Financing Receivable [Member] Core Portfolio, Home Equity Financing Receivable Core Portfolio, Home Equity Financing Receivable [Member] Core Portfolio, Home Equity Financing Receivable [Member] Legacy Assets and Servicing Portfolio, Residential Financing Receivable Legacy Assets and Servicing Portfolio, Residential Financing Receivable [Member] Legacy Assets and Servicing Portfolio, Residential Financing Receivable [Member] Legacy Assets and Servicing Portfolio, Home Equity Financing Receivable Legacy Assets and Servicing Portfolio, Home Equity Financing Receivable [Member] Legacy Assets and Servicing Portfolio, Home Equity Financing Receivable [Member] Credit Card Receivable Credit Card Receivable [Member] Direct/Indirect Consumer Direct and Indirect Financing Receivable [Member] Class of financing receivables related to direct and indirect consumer financing receivables. Such receivables include dealer financial services loans, consumer lending, U.S. securities-based lending margin loans, student loans, non-U.S. consumer loans, and other consumer loans. Other consumer Other Financing Receivables [Member] Other Financing Receivables [Member] Commercial Real Estate Real Estate Loan [Member] Loan to finance the purchase of real estate, including but not limited to, land or building. Commercial Lease Financing Finance Leases Financing Receivable [Member] Small Business Commercial Small Business Financing Receivable [Member] Class of financing receivables related to small business commercial financing receivables. Residential Mortgage Residential Mortgage [Member] Home equity lines of credit Home Equity Line of Credit [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] United States UNITED STATES Non United States Non United States [Member] Non United States Financing Receivable, Recorded Investment, Past Due [Line Items] Financing Receivable, Recorded Investment, Past Due [Line Items] 30-59 Days Past Due Financing Receivable, Recorded Investment, 30 to 59 Days Past Due 60-89 Days Past Due Financing Receivable, Recorded Investment, 60 to 89 Days Past Due 90 Days or More Past Due Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due Total Past Due 30 Days or More Financing Receivable, Recorded Investment, 30 Days or More Past Due Recorded Investment in financing receivables that are past due 30 days or more, at the balance sheet date. Total Current or Less Than 30 Days Past Due Financing Receivable, Recorded Investment, Current and 1 To 29 Days Past Due Financing Receivable, Recorded Investment, Current and 1 To 29 Days Past Due Carrying value gross of valuation allowance Financing Receivable, Acquired with Deteriorated Credit Quality Loans and leases, measured at fair value Loans Receivable, Fair Value Disclosure Total Outstandings Loans and Leases Receivable, Net of Deferred Income Percentage outstanding, 30-59 days past due Financing Receivable, Recorded Investment, 30 to 59 Days Past Due, Percentage of Total Outstanding Financing Receivable, Recorded Investment, 30 to 59 Days Past Due, Percentage of Total Outstanding Percentage outstanding, 60-90 days past due Financing Receivable, Recorded Investment, 60 to 90 Days Past Due, Percentage of Total Outstanding Financing Receivable, Recorded Investment, 60 to 90 Days Past Due, Percentage of Total Outstanding Percentage outstanding, Equal to Greater than 90 days past due Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due, Percentage of Total Outstanding Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due, Percentage of Total Outstanding Percentage outstanding, 30 days or more past due Financing Receivable, Recorded Investment, 30 Days or More Past Due, Percentage of Total Outstanding Financing Receivable, Recorded Investment, 30 Days or More Past Due, Percentage of Total Outstanding Percentage outstanding, current or less than 30 days past due Financing Receivable, Recorded Investment, Current and 1 to 29 Days Past Due, Percentage of Total Outstanding Financing Receivable, Recorded Investment, Current and 1 to 29 Days Past Due, Percentage of Total Outstanding Percentage outstanding, purchase credit-impaired Financing Receivable, Acquired with Deteriorated Credit Quality, Percentage of Total Outstanding Financing Receivable, Acquired with Deteriorated Credit Quality, Percentage of Total Outstanding Percentage outstanding, loans accounted for under the fair value option Loans Receivable, Fair Value Disclosure, Percentage of Total Outstanding Loans Receivable, Fair Value Disclosure, Percentage of Total Outstanding Percentage outstanding, total outstanding Loans and Leases Receivable, Net of Deferred Income, Percentage of Total Outstanding Loans and Leases Receivable, Net of Deferred Income, Percentage of Total Outstanding Unpaid Principal Balance of Loans Covered by Protection Agreements Long Term Credit Protection Agreements, Amount Covered Long Term Credit Protection Agreements, Amount Covered Representations and Warranties Obligations and Corporate Guarantees [Abstract] Representations and Warranties Obligations and Corporate Guarantees [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] 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] Mortgage Loans Originated between 2004 and 2008 Mortgage Loans Originated between 2004 and 2008 [Member] Mortgage Loans Originated between 2004 and 2008 [Member] Mortgage Loans Originated 2009 and Prior Mortgage Loans Originated 2009 and Prior [Member] Mortgage Loans Originated 2009 and Prior [Member] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Private-label securitization trustees, whole-loan investors, including third-party securitization sponsors and other Private-Label Securitization Trustees, Whole-Loan Investors Including Third-Party Sponsors and Other [Member] Debt securities collateralized by real estate mortgage loans (mortgages), issued through whole loan sales, private label securitizations, and other. Monolines Monoline [Member] Monoline. GSEs Government Sponsored Enterprises [Member] Government Sponsored Enterprises(GSEs) [Member] Private-Label Investors Private-Label Investors [Member] Private-Label Investors [Member] Whole-Loan Investors Whole-loan Investors [Member] Whole-loan Investors [Member] Private-Label Securitization Trustees Private-Label Securitization Trustees [Member] Private-Label Securitization Trustees [Member] Private Label Securitization Trustees, Whole-Loan Investors And The Government Sponsored Enterprises Private Label Securitization Trustees, Whole-Loan Investors And The Government Sponsored Enterprises [Member] Private Label Securitization Trustees, Whole-Loan Investors And The Government Sponsored Enterprises [Member] Sponsors of Third-Party Securitizations Sponsors of Third-Party Securitizations [Member] Sponsors of Third-Party Securitizations [Member] Prime loans Prime loans [Member] Prime Loans. Alt-A Alt-A [Member] Alt-A. Subprime Subprime [Member] Subprime. Other Other Product Type [Member] Other. Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] Bank of New York Mellon, As Trustee Settlement Bank of New York Mellon, As Trustee Settlement [Member] Bank of New York Mellon, As Trustee Settlement Loss Contingencies [Line Items] Loss Contingencies [Line Items] Notional amount of unresolved repurchase claims Unresolved Repurchase Claims, Amount Unresolved Repurchase Claims, Amount Duplicate claims Unresolved Repurchase Claims, Duplicated Claims, Amount Unresolved Repurchase Claims, Duplicated Claims, Amount Unresolved repurchase claims, net of duplicated claims Unresolved Repurchase Claims, Net of Duplicated Claims, Amount Unresolved Repurchase Claims, Net of Duplicated Claims, Amount Outstanding claims with review Unresolved Repurchase Claims, Amount, With Individual File Review Unresolved Repurchase Claims, Amount, With Individual File Review Outstanding claims without review Unresolved Repurchase Claims, Amount, Without Individual File Review Unresolved Repurchase Claims, Amount, Without Individual File Review Number of duplicate claims outstanding (more than) Unresolved Repurchase Claims, Number of Duplicate Claims Outstanding Unresolved Repurchase Claims, Number of Duplicate Claims Outstanding Duplicate claims submitted without individual loan file review Unresolved Repurchase Claims, Duplicate Claims Submitted Without Individual Loan File Review Unresolved Repurchase Claims, Duplicate Claims Submitted Without Individual Loan File Review New purchase claims Unresolved Repurchase Claims, Additions Unresolved Repurchase Claims, Additions Individual loan file reviews on repurchase claims Unresolved Repurchase Claims, Additions, Without Individual File Review Unresolved Repurchase Claims, Additions, Without Individual File Review Additional unresolved repurchase claims with individual file review Unresolved Repurchase Claims, Additions, With Individual File Review Unresolved Repurchase Claims, Additions, With Individual File Review Amount of loan repurchase claims resolved Unresolved Repurchase Claims, Portion Resolved Unresolved Repurchase Claims, Portion Resolved Amount of loan repurchase claims resolved through settlement Unresolved Repurchase Claims, Portion Resolved Through Settlement Unresolved Repurchase Claims, Portion Resolved Through Settlement Amount of loan repurchase claims resolved through rescission Unresolved Repurchase Claims, Portion Resolved Through Rescissions Amount of Loan Repurchase Claims Resolved Through Rescissions Amount of loan repurchase claims resolved through repurchase and make whole payments Unresolved Repurchase Claims, Amount Resolved Through Mortgage Repurchases and Make-Whole Payments Unresolved Repurchase Claims, Amount Resolved Through Mortgage Repurchases and Make-Whole Payments Unresolved repurchase claims sold Unresolved Repurchase Claims, Sold Unresolved Repurchase Claims, Sold Unresolved repurchase claims principal paid Unresolved Repurchase Claims, Principal Paid Unresolved Repurchase Claims, Principal Paid Principal amount of delinquent loans Mortgage Loans on Real Estate, Principal Amount of Delinquent Loans Unresolved repurchase claims notional amount Unresolved Repurchase Claims, Notional Amount Unresolved Repurchase Claims, Notional Amount Fair Value Option [Abstract] Fair Value Option [Abstract] Fair Value, Option, Quantitative Disclosures [Table] Fair Value, Option, Quantitative Disclosures [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Trading Account Profits (Losses) Trading Gain (Loss) [Member] Trading Gain (Loss) Mortgage Banking Income (Loss) Mortgage Banking Income (Loss) [Member] Mortgage Banking Income Loss Member. Other Income (Loss) Other Operating Income (Expense) [Member] Eligible Item or Group for Fair Value Option [Axis] Eligible Item or Group for Fair Value Option [Axis] Fair Value, Option, Eligible Item or Group [Domain] Fair Value, Option, Eligible Item or Group [Domain] Loans reported as trading account assets Trading Securities [Member] Trading inventory – other Trading Inventory - Other [Member] Trading Inventory - Other [Member] Loans and leases Loans Receivable [Member] Loans Held-for-Sale Loans Held-for-Sale [Member] Loans Held-for-Sale [Member] Securities financing agreements Securities Financing Transaction, Fair Value [Member] Other assets Other Assets [Member] Long-term deposits Long-term Deposits [Member] Long Term Deposits Member. Asset-backed securities Asset-backed Securities [Member] Unfunded loan commitments Unfunded Loan Commitment [Member] Undisbursed funds of a credit facility in which the borrower may draw upon. Short-term borrowings Short-term Debt [Member] Long-term debt Long-term Debt [Member] Fair Value, Option, Quantitative Disclosures [Line Items] Fair Value, Option, Quantitative Disclosures [Line Items] Gains (Losses) Relating to Assets and Liabilities Accounted for Under the Fair Value Option Fair Value, Option, Changes in Fair Value, Gain (Loss) Accounting Policies [Abstract] 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] Building Building [Member] Furniture and Equipment Furniture and Equipment [Member] Furniture and Equipment [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Premises and equipment, estimated useful lives Property, Plant and Equipment, Useful Life Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Loan Restructuring Modification [Axis] Loan Restructuring Modification [Axis] Information by concessions made to the terms of loan contracts. Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] Concessions made to the terms of loan contracts, including but not limited to, interest rate reductions, maturity extensions, principal forgiveness, and payment deferral. Contractual interest rate reduction Contractual Interest Rate Reduction [Member] Contractual Interest Rate Reduction [Member] Capitalization of past due amounts Capitlization Of Past Due Amounts [Member] Capitlization Of Past Due Amounts [Member] Principal and/or interest forbearance Principal Interest Forbearance [Member] Principal Interest Forbearance [Member] Other modifications Other Modifications [Member] Other Modifications [Member] Loan Restructuring Modification Name [Axis] Loan Restructuring Modification Name [Axis] Information by name of loan modification, for example, but not limited to, modifications under government programs. Loan Restructuring Modification Name [Domain] Loan Restructuring Modification Name [Domain] [Domain] for Information by name of loan modification, for example, but not limited to, modifications under government programs. Modifications under government programs Government Modifications [Member] Government Modifications [Member] Modifications under proprietary programs Proprietary Modifications [Member] Proprietary Modifications [Member] Trial modifications Trial Modifications [Member] Trial Modifications [Member] Loans discharged in Chapter 7 bankruptcy Chapter Seven Bankruptcy [Member] Chapter Seven Bankruptcy [Member] Financing Receivable, Troubled Debt Restructuring [Axis] Financing Receivable, Troubled Debt Restructuring [Axis] Financing Receivable, Troubled Debt Restructuring [Domain] Financing Receivable, Troubled Debt Restructuring [Domain] Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications [Line Items] Carrying Value Financing Receivable, Modifications, Post-Modification Recorded Investment Representations and Warranties Obligations and Corporate Guarantees Representations and Warranties Obligations and Corporate Guarantees [Text Block] Representations and Warranties Obligations and Corporate Guarantees Text Block. Offsetting Assets And Liabilities [Abstract] Offsetting Assets And Liabilities [Abstract] Securities borrowed or purchased under agreements to resell: Securities Purchased under Agreements to Resell, Securities Borrowed [Abstract] Securities Purchased under Agreements to Resell, Securities Borrowed [Abstract] Gross Assets Securities Purchased under Agreements to Resell, Securities Borrowed, Gross Amount, before effects of master netting arrangements, of securities purchased under agreements to resell and securities borrowed. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. Amounts Offset Securities Purchased under Agreements to Resell, Securities Borrowed, Liability Securities Purchased Under Agreements to Resell, Securities Borrowed, Liability Net Balance Sheet Amount Securities Purchased under Agreements to Resell, Securities Borrowed Securities Purchased Under Agreements to Resell, Securities Borrowed Financial Instruments Securities Purchased under Agreements to Resell, Securities Borrowed, Collateral, Obligation to Return Securities Securities Purchased under Agreements to Resell, Securities Borrowed, Collateral, Obligation to Return Securities Net Assets Securities Purchased under Agreements to Resell, Securities Borrowed, Amount Offset Against Collateral Securities Purchased under Agreements to Resell, Securities Borrowed, Amount Offset Against Collateral Securities loaned or sold under agreements to repurchase: Securities Sold under Agreements to Resell, Securities Loaned [Abstract] Securities Sold under Agreements to Resell, Securities Loaned [Abstract] Gross Liabilities Securities Sold under Agreements to Repurchase, Securities Loaned, Gross Securities Sold under Agreements to Repurchase, Securities Loaned, Gross Amounts Offset Securities Sold under Agreements to Repurchase, Securities Loaned, Asset Securities Sold under Agreements to Repurchase, Securities Loaned, Asset Net Balance Sheet Amount Securities Sold under Agreements to Repurchase, Securities Loaned Securities Sold under Agreements to Repurchase, Securities Loaned Financial Instruments Securities Sold under Agreements to Repurchase, Securities Loaned, Collateral, Right to Reclaim Securities Securities Sold under Agreements to Repurchase, Securities Loaned, Collateral, Right to Reclaim Securities Net Liabilities Securities Sold under Agreements to Repurchase, Securities Loaned, Amount Offset Against Collateral Securities Sold under Agreements to Repurchase, Securities Loaned, Amount Offset Against Collateral Other: Securities Financing Agreements Liability, Other [Abstract] Securities Financing Agreements Liability, Other [Abstract] Gross Liabilities Securities Financing Agreements Liability, Other, Gross Securities Financing Agreements Liability, Other, Gross Amounts Offset Securities Financing Agreements Liability, Other, Asset Securities Financing Agreements Liability, Other, Asset Net Balance Sheet Amount Securities Financing Agreements Liability, Other Securities Financing Agreements Liability, Other Financial Instruments Securities Financing Agreements Liability, Other, Collateral, Right to Reclaim Securities Securities Financing Agreements Liability, Other, Collateral, Right to Reclaim Securities Net Liabilities Securities Financing Agreements Liability, Other, Amount Offset Against Collateral Securities Financing Agreements Liability, Other, Amount Offset Against Collateral Total Securities Financing Agreements Liability: Securities Financing Agreements Liability [Abstract] Securities Financing Agreements Liability [Abstract] Gross Liabilities Securities Financing Agreements Liability, Gross Securities Financing Agreements Liability, Gross Amounts Offset Securities Financing Agreements Liability, Asset Securities Financing Agreements Liability, Asset Net Balance Sheet Amount Securities Financing Agreements Liability Securities Financing Agreements Liability Financial Instruments Securities Financing Agreements Liability, Collateral, Right to Reclaim Securities Securities Financing Agreements Liability, Collateral, Right to Reclaim Securities Net Liabilities Securities Financing Agreements Liability, Amount Offsett Against Collateral Securities Financing Agreements Liability, Amount Offsett Against Collateral Loans and leases repurchase activity Loans and Leases, Repurchased Loans and Leases, Repurchased Schedule of Loans and Leases Outstanding Past Due Financing Receivables [Table Text Block] Schedule of Financing Receivables, Non Accrual Status Schedule of Financing Receivables, Non Accrual Status [Table Text Block] Financing Receivable Credit Quality Indicators Financing Receivable Credit Quality Indicators [Table 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 Receivables Impaired Financing Receivables [Table Text Block] Troubled Debt Restructurings on Financing Receivables Troubled Debt Restructurings on Financing Receivables [Table Text Block] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Table Text Block] Accretable Yield Activity Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield [Table Text Block] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Consolidated VIEs Variable Interest Entity, Primary Beneficiary [Member] Statement [Line Items] Statement [Line Items] Assets Assets [Abstract] Cash and due from banks Cash and Due from Banks Interest-bearing deposits with the Federal Reserve and non-U.S. central banks Interest-bearing Deposits in Banks and Other Financial Institutions Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Time deposits placed and other short-term investments Time Deposits and Other Short-term Investments Time deposits in other financial institutions for relatively short periods of time and other short-term investments. Federal funds sold and securities borrowed or purchased under agreements to resell (includes $62,182 and $68,656 measured at fair value) Federal Funds Sold and Securities Purchased under Agreements to Resell Trading account assets (includes $110,923 and $111,817 pledged as collateral) Trading Securities Derivative assets Derivative Asset Debt securities: Marketable Securities [Abstract] Carried at fair value (includes $46,976 and $52,283 pledged as collateral) Debt Securities Carried at Fair Value Debt Securities Carried at Fair Value Held-to-maturity, at cost (fair value – $59,641 and $52,430; $17,124 and $20,869 pledged as collateral) Held-to-maturity Securities Total debt securities Marketable Securities Loans and leases (includes $8,681 and $10,042 measured at fair value and $52,959 and $71,579 pledged as collateral) Allowance for loan and lease losses Loans and Leases Receivable, Allowance Loans and leases, net of allowance Loans and Leases Receivable, Net Amount Premises and equipment, net Property, Plant and Equipment, Net Mortgage servicing rights (includes $3,530 and $5,042 measured at fair value) Servicing Asset Goodwill Goodwill Intangible assets Finite-Lived Intangible Assets, Net Loans held-for-sale (includes $6,801 and $6,656 measured at fair value) Disposal Group, Including Discontinued Operation, Loans Receivable, Net Customer and other receivables Other Receivables Other assets (includes $13,873 and $18,055 measured at fair value) Other Assets Total assets Assets On-balance sheet liabilities Liabilities [Abstract] Deposits in U.S. offices: Deposits, Domestic [Abstract] Noninterest-bearing Noninterest-bearing Deposit Liabilities, Domestic Interest-bearing (includes $1,469 and $1,899 measured at fair value) Interest-bearing Deposit Liabilities, Domestic Deposits in non-U.S. offices: Deposits, Foreign [Abstract] Noninterest-bearing Noninterest-bearing Deposit Liabilities, Foreign Interest-bearing Interest-bearing Deposit Liabilities, Foreign Total deposits Deposits Federal funds purchased and securities loaned or sold under agreements to repurchase (includes $35,357 and $26,500 measured at fair value) Federal Funds Purchased and Securities Sold under Agreements to Repurchase Trading account liabilities Trading Liabilities Derivative liabilities Derivative Liability Short-term borrowings (includes $2,697 and $1,520 measured at fair value) Other Short-term Borrowings Accrued expenses and other liabilities (includes $12,055 and $11,233 measured at fair value and $528 and $484 of reserve for unfunded lending commitments) Accrued Liabilities and Other Liabilities Long-term debt (includes $36,404 and $47,035 measured at fair value) Long-term Debt All other liabilities (includes $84 and $138 of non-recourse liabilities) Other Liabilities Total liabilities Liabilities Commitments and contingencies Commitments and Contingencies Shareholders’ equity Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $0.01 par value; authorized – 100,000,000 shares; issued and outstanding – 3,647,790 and 3,407,790 shares Preferred Stock, Redeemable and NonRedeemable, Value Aggregate par or stated value of issued nonredeemable and redeemable preferred stock (including Series T which may be exercised, at the option of the holder, through tendering the Series T Preferred Stock or paying cash). Common stock and additional paid-in capital, $0.01 par value; authorized – 12,800,000,000 shares; issued and outstanding – 10,516,542,476 and 10,591,808,296 shares Common Stocks, Including Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Total shareholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and shareholders’ equity Liabilities and Equity Core Portfolio Home Equity Junior Lien Home Equity Financing Receivable Junior Lien Home Equity Financing Receivable [Member] Junior Lien Home Equity Financing Receivable [Member] Personal Property Secured Loans Personal Property Secured Loans [Member] Personal Property Secured Loans [Member] Credit Card and Other Unsecured Consumer Loans Credit Card and Other Unsecured Consumer Loans [Member] Credit Card and Other Unsecured Consumer Loans [Member] Business Card Loans Business Card Loans [Member] Business Card Loans [Member] Chapter Seven Bankruptcy Death or Bankruptcy Death or Bankruptcy [Member] Death or Bankruptcy [Member] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Second Mortgage Second Mortgage [Member] Probability of default measurement period Fair Value Inputs, Probability of Default Measurement Period Fair Value Inputs, Probability of Default Measurement Period Loss severity Fair Value Inputs, Loss Severity 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 Period for sustained repayment performance Threshold Period of Consecutive Payments to Remove from Nonaccrual Status Threshold Period of Consecutive Payments to Remove from Nonaccrual Status Threshold period past due for write-off of renegotiated financing receivable placed on a fixed payment plan Threshold Period Past Due for Write-off of Renegotiated Financing Receivable Placed on a Fixed Payment Plan Threshold Period Past Due for Write-off of Renegotiated Financing Receivable Placed on a Fixed Payment Plan Receivables [Abstract] 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] Federal National Mortgage Association FNMA Federal National Mortgage Association FNMA [Member] Federal National Mortgage Association FNMA [Member] 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] Contractually required payments including interest Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition Less: Nonaccretable difference Certain Loans Acquired in Transfer Not Accounted for as Debt Securities. Acquired During Period, Nonaccretable Difference Certain Loans Acquired in Transfer Not Accounted for as Debt Securities. Acquired During Period, Nonaccretable Difference Cash flows expected to be collected Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition Less: Accretable yield Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Fair value of loans acquired Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value 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 L Preferred Stock Series L Preferred Stock [Member] Series L Preferred Stock Member. Preferred Stock, Excluding Series T Preferred Preferred Stock, Excluding Series T Preferred [Member] Preferred Stock, Excluding Series T Preferred [Member] Class of Stock [Line Items] Class of Stock [Line Items] Per Annum Dividend Rate Preferred Stock, Dividend Rate, Percentage Preferred stock to be convertible into common shares Convertible Preferred Stock, Shares Issued upon Conversion Number of trading days Preferred Stock, Convertible, Threshold Trading Days Preferred Stock, Convertible, Threshold Trading Days Period of consecutive trading days Preferred Stock, Convertible, Threshold Consecutive Trading Days Preferred Stock, Convertible, Threshold Consecutive Trading Days Threshold percentage of common stock closing price Preferred Stock, Convertible, Threshold Percentage of Common Stock Closing Price Preferred Stock, Convertible, Threshold Percentage of Common Stock Closing Price Preferred stock, par value (in usd per share) Preferred Stock, Par or Stated Value Per Share Number of semi annual periods in arrears (or more) Preferred Stock, Voting Rights, Dividend Payable, Number of Semi Annual Periods in Arrears Preferred Stock, Voting Rights, Dividend Payable, Number of Semi Annual Periods in Arrears Number of quarterly periods in arrears (or more) Preferred Stock, Voting Rights, Dividend Payable, Number of Quarterly Periods in Arrears Preferred Stock, Voting Rights, Dividend Payable, Number of Quarterly Periods in Arrears Number of additional directors to be elected Preferred Stock, Voting Rights, Dividends in Arrears, Number of Additional Directors to be Elected Preferred Stock, Voting Rights, Dividends in Arrears, Number of Additional Directors to be Elected Number of semi annual periods for termination (or more) Preferred Stock, Termination of Voting Rights, Dividend Paid, Number of Semi Annual Periods Preferred Stock, Termination of Voting Rights, Dividend Paid, Number of Semi Annual Periods Number of quarterly periods for termination (or more) Preferred Stock, Termination of Voting Rights, Dividend Paid, Number of Quarterly Periods Preferred Stock, Termination of Voting Rights, Dividend Paid, Number of Quarterly Periods Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Preferred Stock Preferred Stock [Member] Common Stock and Additional Paid-in Capital Common Stock Including Additional Paid in Capital [Member] Retained Earnings Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning Balance Beginning Balance, Shares Shares, Outstanding Net income Net Income (Loss) Attributable to Parent Net change in available-for-sale debt and marketable equity securities Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Net change in derivatives Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent Employee benefit plan adjustments Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax, Portion Attributable to Parent Net change in foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Dividends paid: Dividends [Abstract] Common Dividends, Common Stock, Cash Preferred Dividends, Preferred Stock, Cash Issuance of preferred stock Stock Issued During Period, Value, New Issues Redemption of preferred stock Stock Redeemed or Called During Period, Value Common stock issued in connection with exchanges of preferred stock and trust preferred securities Stock Issued During Period, Value, Exchange of Stock The changes in value of stock that was converted from one type or class to another during the period. Conversion may be among classes of common or nonredeemable preferred stock or from common stock or nonredeemable preferred stock to nonredeemable preferred stock or common stock, respectively. Common stock issued in connection with exchanges of preferred stock and trust preferred securities, shares Stock Issued During Period, Shares, Exchange of Stock Change in the number of shares due to a conversion of stock from one class to another during the period. Conversion may be among classes of common or nonredeemable preferred stock or from common stock or nonredeemable preferred stock to nonredeemable preferred stock or common stock, respectively. Common stock issued under employee plans and related tax effects, Shares Stock Issued During Period, Shares, Employee Benefit Plan Common stock issued under employee plans and related tax effects Stock Issued During Period, Value, Employee Benefit Plan Common stock repurchased, Shares Stock Repurchased and Retired During Period, Shares Common stock repurchased Stock Repurchased and Retired During Period, Value Other Stock Issued During Period, Value, Other Ending Balance Ending Balance, Shares Carrying value of loans entered into payment default that are no longer held Financing Receivable, Modifications, Subsequent Default, Recorded Investment, No Longer Held Financing Receivable, Modifications, Subsequent Default, Recorded Investment, No Longer Held Number of missing payments causing default Financing Receivable, Modifications, Number of Missing Payments Causing Default Financing Receivable, Modifications, Number of Missing Payments Causing Default Threshold period considered past due after modification Threshold Period Past Due after Modification of Financing Receivable Threshold Period Past Due after Modification of Financing Receivable Trouble debt restructurings entered payment default that were modified during the preceding twelve months Financing Receivable, Modifications, Subsequent Default, Recorded Investment Fair Value Disclosures [Abstract] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Recurring Fair Value, Measurements, Recurring [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] 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. government and agency securities US Government Corporations and Agencies Securities [Member] Corporate securities, trading loans and other Corporate securities, trading loans and other [Member] Corporate securities, trading loans and other Member. Equity securities Equity Securities [Member] Non-U.S. sovereign debt Foreign Government Debt Securities [Member] Mortgage trading loans and ABS Mortgage trading loans and asset-backed securities [Member] Mortgage trading loans and asset backed securities Member. U.S. government and government agency securities US Treasury and Government [Member] Agency Mortgage Backed Securities, Agency [Member] Agency backed (GN, FN, FR) pass-through mortgage backed security. Cash flows are not structured. Agency-collateralized mortgage obligations Mortgage Backed Securities, Agency-Collateralized Mortgage Obligation [Member] Agency backed (GN, FN, FR) collateralized mortgage obligation. Underlying collateral is agency MBS. Cash flows are structured/tranched Non-agency residential Residential Mortgage Backed Securities [Member] Commercial Commercial Mortgage Backed Securities [Member] Non-U.S. securities Foreign Corporate Debt Securities [Member] Corporate/Agency bonds Corporate Bond Securities [Member] Other taxable securities Other Taxable Securities [Member] Other Taxable Securities. Tax-exempt securities Tax-Exempt Securities [Member] Tax exempt securities Member. US Government-sponsored Enterprises Debt Securities US Government-sponsored Enterprises Debt Securities [Member] 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] Fair value Assets and liabilities measure on Recurring basis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] Financial assets Assets, Fair Value Disclosure [Abstract] Federal funds sold and securities borrowed or purchased under agreements to resell Federal Funds Sold and Securities Borrowed or Purchased under Agreements to Resell, Fair Value Disclosure Trading account assets Gross Derivative Assets Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement Netting adjustments Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset Derivative assets Total available-for-sale debt securities Available-for-sale Securities, Debt Securities Other debt securities carried at fair value Other Debt Securities Carried at Fair Value Other Debt Securities Carried at Fair Value Loans and leases Mortgage servicing rights Servicing Asset at Fair Value, Amount Loans held-for-sale Loans Held-for-sale, Fair Value Disclosure Other assets Other Assets, Fair Value Disclosure Total assets Assets, Fair Value Disclosure Liabilities Liabilities, Fair Value Disclosure [Abstract] Interest-bearing deposits in U.S. offices Interest-bearing Deposit Liabilities, Domestic, Fair Value Disclosure Interest-bearing Deposit Liabilities, Domestic, Fair Value Disclosure Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value Federal Funds Purchased and Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure Total trading account liabilities Trading Liabilities, Fair Value Disclosure Gross Derivative Liabilities Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement Netting adjustment Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset Derivative Liability Short-term borrowings Short-term Debt, Fair Value Accrued expenses and other liabilities Accrued Expenses and Other Liabilities, Fair Value Disclosure Carrying amount as of the balance sheet date of liabilities not otherwise specified in the taxonomy. Also, serves as the sum of liabilities not individually reported in the financial statements, or not separately disclosed in the notes. Long-term debt Long-term Debt, Fair Value Total liabilities Financial and Nonfinancial Liabilities, Fair Value Disclosure Assets and Liabilities, Recurring Basis, Supplemental Information: Fair Value, Transfers Between Level 1 and Level 2, Description and Policy [Abstract] Assets transferred from Level 1 to Level 2 Fair Value, Assets, Level 1 to Level 2 Transfers, Amount Liabilities transferred from Level 1 to Level 2 Fair Value, Liabilities, Level 1 to Level 2 Transfers, Amount Banking and Thrift [Abstract] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Bank of America Corporation Parent Company [Member] Bank of America, N.A. Subsidiaries, Bank of America, N.A. [Member] Subsidiaries, Bank of America, N.A. [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Tier 1 capital ratio Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Total capital ratio Capital Required for Capital Adequacy to Risk Weighted Assets Tier 1 leverage required for capital adequacy Tier One Leverage Capital Required for Capital Adequacy to Average Assets Increase in capital required for capital adequacy to reach well capitalized to risk weighted assets Increase In Capital Required For Capital Adequacy To Reach Well Capitalized To Risk Weighted Assets Increase In Capital Required For Capital Adequacy To Reach Well Capitalized To Risk Weighted Assets Tier 1 leverage ratio Tier One Leverage Capital Required to be Well Capitalized to Average Assets Tier 1 capital ratio Tier One Risk Based Capital to Risk Weighted Assets Total capital ratio Capital to Risk Weighted Assets Tier 1 leverage ratio Tier One Leverage Capital to Average Assets Percentage increase in Tier 1 capital ratio Basel Three Transition, Percentage Increase in Tier One Based Capital Required for Capital Adequacy to Risk Weighted Assets Basel Three Transition, Percentage Increase in Tier One Based Capital Required for Capital Adequacy to Risk Weighted Assets Fair Value Inputs, Assets, Quantitative Information [Table] Fair Value Inputs, Assets, Quantitative Information [Table] Instruments backed by residential real estate assets Instruments Backed by Residential Real Estate Assets [Member] Instruments Backed by Residential Real Estate Assets [Member] Commercial loans, debt securities and other Commercial Loans, Debt Securities and Other [Member] Commercial Loans, Debt Securities and Other [Member] Auction rate securities Auction Rate Securities [Member] Structured liabilities Structured Finance [Member] Major Types of Debt and Equity Securities [Axis] Mortgage trading loans and ABS Other taxable securities, substantially all asset-backed securities Tax-exempt securities Private equity funds Private Equity Funds [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Credit derivatives Credit Risk Contract [Member] Equity contracts Equity Contract [Member] Commodity contracts Commodity Contract [Member] Interest rate contracts Interest Rate Contract [Member] Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Trading Securities Available-for-sale Securities Available-for-sale Securities [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Weighted Average Weighted Average [Member] Valuation Technique [Axis] Valuation Technique [Axis] Valuation Technique [Domain] Valuation Technique [Domain] Income and Market Approach Technique Income and Market Approach Technique [Member] Income and Market Approach Technique [Member] Income Approach Valuation Technique Income Approach Valuation Technique [Member] Fair Value Inputs, Assets, Quantitative Information [Line Items] Fair Value Inputs, Assets, Quantitative Information [Line Items] Assets, fair value Long-term debt Net derivative asset (liability) Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Fair Value Inputs [Abstract] Fair Value Inputs [Abstract] Yield Fair Value Inputs Yield Yield on loans or leases or portolios of loans and leases used as an input to measure fair value. Prepayment speed Fair Value Inputs, Prepayment Rate Default rate Fair Value Inputs, Probability of Default Enterprise value/EBITDA multiple Fair Value Inputs, Earnings before Interest, Taxes, Depreciation, and Amortization Multiple Duration Fair Value Input, Duration Fair Value Input, Duration Projected tender price to refinancing level Fair Value Inputs, Projected Tender Price to Refinancing Level Expected ratio of projected tender offers to the refinancing level, used as an input to measure fair value. Price Fair Value Inputs, Offered Quotes Loans held-for-sale, measured at fair value Equity correlation Fair Value Inputs, Equity Correlation Equity Correlation, used as an input to measure fair value. Long-dated equity volatilities Fair Value Assumptions, Expected Volatility Rate Correlation (IR/IR) Fair Value Inputs, Correlation Interest Rate to Interest Rate Correlation of interest rate to interest rate, used as an input to measure fair value. Long-dated inflation volatilities Fair Value Inputs, Long-dated Inflation Rate Volatilities Long-dated inflation rate volatilities, used as an input to measure fair value. Upfront points Fair Value Inputs, Upfront Points Upfront points, used as an input to measure fair value. Spread to index Fair Value Inputs, Spread to Index Spread to Index, used as an input to measure fair value. Credit correlation Fair Value Inputs, Credit Correlation Credit correlation, used as an input to measure fair value. Natural gas forward price Fair Value Inputs, Natural Gas Basis Curve Natural gas basis cure, used as an input to measure fair value. Correlation Fair Value Inputs, Correlation Correlation, used as an input to measure fair value. Correlation (FX/IR) Fair Value Inputs, Correlation of Foreign Exchange Rates to Interest Rates Correlation of foreign exchange rates to interest rates, used as an input to measure fair value. Long-dated inflation rates Fair Value Inputs, Long-dated Inflation Rates Long-dated inflation rates, used as an input to measure fair value. Other assets, measured at fair value Compensation and Retirement Disclosure [Abstract] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] Qualified Pension Plan Qualified Pension Plans [Member] Qualified Pension Plans Member. Non-U.S. Pension Plans Foreign Pension Plan [Member] Nonqualified and Other Pension Plans Nonqualified and Other Pension Plans [Member] Nonqualified and Other Pension Plans. Postretirement Health and Life Plans Postretirement Health Coverage and Life Insurance [Member] Postretirement Health Coverage and Life Insurance [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax [Abstract] Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax [Abstract] Current year actuarial loss Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax Amortization of actuarial gain (loss) Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax Current year prior service cost Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost (Credit) Arising During Period, before Tax Amortization of prior service cost Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), before Tax Amounts recognized in OCI Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax Statement of Cash Flows [Abstract] Operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Adjustments to reconcile net income to net cash provided by (used in) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Provision for credit losses Provision for Loan, Lease, and Other Losses Gains on sales of debt securities Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments Fair value adjustments on structured liabilities Fair Value, Option, Structured Liabilities, Changes in Fair Value, Gain (Loss) Fair Value, Option, Structured Liabilities, Changes in Fair Value, Gain (Loss) Depreciation and premises improvements amortization Depreciation and Amortization of Premise Improvements Depreciation and Amortization of Premise Improvements Amortization of intangibles Amortization of Intangible Assets Net amortization of premium/discount on debt securities Accretion (Amortization) of Discounts and Premiums, Investments Deferred income taxes Deferred Income Tax Expense (Benefit) Loans held-for-sale: Payments for Origination and Purchases of Loans Held-for-sale [Abstract] Originations and purchases Payments for Origination and Purchases of Loans Held-for-sale Proceeds from sales and paydowns of loans originally classified as held-for-sale Proceeds from Sales and Paydowns of Loans Originally Classified as Held-for-Sale Proceeds from sales and paydowns of loans originally classified as held for sale. Net change in: Increase (Decrease) in Operating Assets [Abstract] Trading and derivative instruments Increase (Decrease) in Financial Instruments Used in Operating Activities and Derivative Assets Increase (Decrease) in Financial Instruments Used in Operating Activities and Derivative Assets Other assets Increase (Decrease) in Other Operating Assets Accrued expenses and other liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Other operating activities, net Increase (Decrease) in Other Operating Assets and Liabilities, Net Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Net change in: Increase (Decrease) in Investing Activities [Abstract] Increase (Decrease) in Investing Activities [Abstract] Time deposits placed and other short-term investments Increase (Decrease) in Time Deposits and Other Short-term Investments Increase (Decrease) in Time Deposits and Other Short-term Investments Federal funds sold and securities borrowed or purchased under agreements to resell Proceeds from (Payments for) Federal Funds Sold and Securities Purchased under Agreements to Resell, Net Debt securities carried at fair value: Debt Securities Carried at Fair Value [Abstract] Debt Securities Carried at Fair Value [Abstract] Proceeds from sales Proceeds from Sale of Debt Securities, Fair Value The cash inflow associated with the sale of debt securities carried at fair value. Proceeds from paydowns and maturities Proceeds from Maturities Prepayments and Calls of Debt Securities, Fair Value The cash inflow associated maturities (principal being due), prepayments and calls (requests of early payments) on securities not classified as either held-to-maturity securities or trading securities which are classified as debt securities carried at fair value. Purchases Payments to Acquire Debt Securities Carried at Fair Value The cash outflow to acquire debt securities carried at fair value, because they are not classified as either held-to-maturity securities or trading securities. Held-to-maturity debt securities: Proceeds from Sale and Maturity of Held-to-maturity Securities [Abstract] Proceeds from paydowns and maturities Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities Purchases Payments to Acquire Held-to-maturity Securities Loans and leases: Proceeds from Sale of Loans and Leases Held-for-investment [Abstract] Proceeds from sales Proceeds from Sale of Loans and Leases Held-for-investment Purchases Payments to Acquire Loans and Leases Held-for-investment Other changes in loans and leases, net Payments for (Proceeds from) Other Loans and Leases Net sales (purchases) of premises and equipment Payments for (Proceeds from) Productive Assets Proceeds from sales of foreclosed properties Proceeds from Sale of Foreclosed Assets Proceeds from sales of investments Proceeds from Sale of Other Investments Other investing activities, net Payments for (Proceeds from) Other Investing Activities Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations Financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Net change in: Increase (Decrease) in Financing Activities [Abstract] Increase (Decrease) in Financing Activities [Abstract] Deposits Increase (Decrease) in Deposits Federal funds purchased and securities loaned or sold under agreements to repurchase Increase (Decrease) in Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Net Short-term borrowings Proceeds from (Repayments of) Short-term Debt Long-term debt: Proceeds from (Repayments of) Long-term Debt and Capital Securities [Abstract] Proceeds from issuance Proceeds from Issuance of Long-term Debt Retirement of long-term debt Repayments of Long-term Debt Preferred stock: Proceeds from (Repurchase of) Equity [Abstract] Proceeds from issuance Proceeds from Issuance of Preferred Stock and Preference Stock Redemption Payments for Repurchase of Redeemable Preferred Stock Common stock repurchased Payments for Repurchase of Common Stock Cash dividends paid Payments of Ordinary Dividends Excess tax benefits on share-based payments Excess Tax Benefit from Share-based Compensation, Financing Activities Other financing activities, net Proceeds from (Payments for) Other Financing Activities Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations Net increase (decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at January 1 Cash and cash equivalents at December 31 Supplemental cash flow disclosures Supplemental Cash Flow Information [Abstract] Interest paid Interest Paid, Net Income taxes paid Income Taxes Paid Income taxes refunded Proceeds from Income Tax Refunds Income Tax Disclosure [Abstract] Other comprehensive income (loss), tax Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Tax effect on common stock and additional paid in capital from employee stock purchase plan activity Adjustments Related to Tax Withholding for Share-based Compensation Unrecognized tax benefits that would impact effective rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Number of jurisdictions for filing income tax returns (more than) Number of Jurisdictions Filed Number of Jurisdictions Filed Unrecognized tax benefits is reasonable possible, amount of unrecorded benefit Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit Penalties and interest expense Income Tax Examination, Penalties and Interest Expense Penalties and interest accured Income Tax Examination, Penalties and Interest Accrued Undistributed earnings of foreign subsidiaries Undistributed Earnings of Foreign Subsidiaries Deferred tax liabilities, undistributed foreign earnings Deferred Tax Liabilities, Undistributed Foreign Earnings Organization, Consolidation and Presentation of Financial Statements [Abstract] Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Variable Interest Entities [Axis] Variable Interest Entities [Axis] Variable Interest Entity, Classification [Domain] Variable Interest Entity, Classification [Domain] Unconsolidated VIEs Variable Interest Entity, Not Primary Beneficiary [Member] Agency Residential Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Residential Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Non-agency Residential Mortgage-backed Securities, Issued by Private Enterprises [Member] Residential Mortgage-backed Securities, Issued by Private Enterprises [Member] Commercial Mortgage Prime Prime [Member] Prime Loan [Member]. Subprime Subprime Loan [Member] Subprime Loan [Member]. Alt-A Alt-A Loan [Member] Alt-A Loan [Member] Lien Category [Axis] Lien Category [Axis] Securities by Priority Classification [Axis] Lien Category [Domain] Lien Category [Domain] Securities by Priority Classification [Domain] Senior Lien Senior Lien [Member] Senior Lien [Member] Junior Lien Junior Lien [Member] Junior Lien [Member] Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Maximum loss exposure Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount On-balance sheet assets Debt securities carried at fair value Held-to-maturity securities Loans and leases Residual interests held Retained Interest, Fair Value Disclosure All other assets Principal balance outstanding Continuing Involvement with Transferred Financial Assets, Principal Amount Outstanding Long-term debt All other liabilities Unpaid principal balance of mortgage loans eligible for repurchase Unpaid Principal Balance of Mortgage Loans Eligible for Repurchase Unpaid principal balance of mortgage loans eligible for repurchase from unconsolidated residential mortgage securitization vehicles, principally guaranteed by GNMA, included in All other assets Principal amount that would be payable to the securitization vehicles Principal Amount That Would Be Payable To Securitization Vehicles Under Repurchase Option Principal amount, included in All other liabilities, that would be payable to the securitization vehicles if the Corporation were to exercise the repurchase option Debt Disclosure [Abstract] Schedule of Financial Instruments Subject to Mandatory Redemption [Table] Schedule of Financial Instruments Subject to Mandatory Redemption [Table] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] 3-Month London Interbank Offered Rate (LIBOR) 3-Month London Interbank Offered Rate (LIBOR) [Member] 3-Month London Interbank Offered Rate (LIBOR) [Member] Schedule of Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Axis] Schedule of Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Axis] Financial Instruments Subject to Mandatory Redemption, Financial Instrument [Domain] Financial Instruments Subject to Mandatory Redemption, Financial Instrument [Domain] Trust Preferred Securities Subject to Mandatory Redemption Trust Preferred Securities Subject to Mandatory Redemption [Member] Junior subordinated notes Junior Subordinated Debt [Member] Capital Trust VI Bank of America, Capital Trust Six [Member] Bank of America, Capital Trust Six [Member] Capital Trust VII Bank of America, Capital Trust Seven [Member] Bank of America, Capital Trust Seven [Member] Capital Trust VIII Bank of America, Capital Trust Eight [Member] Bank of America, Capital Trust Eight [Member] Capital Trust XI Bank of America, Capital Trust Eleven [Member] Bank of America, Capital Trust Eleven [Member] Capital Trust XV Bank of America, Capital Trust Fifteen [Member] Bank of America, Capital Trust Fifteen [Member] Capital Trust III NationsBank, Capital Trust Three [Member] NationsBank, Capital Trust Three [Member] Capital III BankAmerica, Capital Three [Member] BankAmerica, Capital Three [Member] Capital III Barnett, Capital Three [Member] Barnett, Capital Three [Member] Capital Trust V Fleet, Capital Trust Five [Member] Fleet, Capital Trust Five [Member] Capital Trust III BankBoston, Capital Trust Three [Member] BankBoston, Capital Trust Three [Member] Capital Trust IV BankBoston, Capital Trust Four [Member] BankBoston, Capital Trust Four [Member] Capital Trust B MBNA, Capital Trust B [Member] MBNA, Capital Trust B [Member] Capital III Countrywide, Capital Three [Member] Countrywide, Capital Three [Member] Capital IV Countrywide, Capital Four [Member] Countrywide, Capital Four [Member] Capital V Countrywide, Capital Five [Member] Countrywide, Capital Five [Member] Preferred Capital Trust III Merrill Lynch, Preferred Capital Trust Three [Member] Merrill Lynch, Preferred Capital Trust Three [Member] Preferred Capital Trust IV Merrill Lynch, Preferred Capital Trust Four [Member] Merrill Lynch, Preferred Capital Trust Four [Member] Preferred Capital Trust V Merrill Lynch, Preferred Capital Trust Five [Member] Merrill Lynch, Preferred Capital Trust Five [Member] Capital Trust I Merrill Lynch, Capital Trust One [Member] Merrill Lynch, Capital Trust One [Member] Capital Trust II Merrill Lynch, Capital Trust Two [Member] Merrill Lynch, Capital Trust Two [Member] Capital Trust III Merrill Lynch, Capital Trust Three [Member] Merrill Lynch, Capital Trust Three [Member] Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items] Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items] Aggregate Principal Amount of Trust Securities Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Share Value, Amount Aggregate Principal Amount of the Notes Debt Instrument, Face Amount Per Annum Interest Rate of the Notes Debt Instrument, Interest Rate, Stated Percentage Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast Scenario, Forecast [Member] Subsidiaries, FIA Card Services, N.A. Subsidiaries, FIA Card Services, N.A. [Member] Subsidiaries, FIA Card Services, N.A. [Member] Subsidiaries, Bank of America California, N.A. Subsidiaries, Bank of America California, N.A. [Member] Subsidiaries, Bank of America California, N.A. [Member] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Average daily reserve balances required by federal reserve Average Daily Reserve Balances Required By Federal Reserve Represents the average daily reserve balances required by the Federal Reserve. Average daily reserve balances in excess of vault cash held with federal reserve Average Daily Reserve Balances In Excess Of Vault Cash Held With Federal Reserve Represents the average daily reserve balances, in excess of vault cash, held with the Federal Reserve. Cash segregated under other regulations Cash Segregated under Other Regulations Securities segregated under other regulations Securities Segregated under Other Regulations Cash dividends paid to parent company by consolidated subsidiaries Cash Dividends Paid to Parent Company by Consolidated Subsidiaries Return of capital paid to parent company by consolidated subsidiaries Return of Capital Paid to Parent Company by Consolidated Subsidiaries Return of Capital Paid to Parent Company by Consolidated Subsidiaries Cash dividends allowable to be declared and paid by parent company by consolidated subsidiaries Cash Dividends Allowable to be Declared and Paid to Parent Company By Consolidated Subsidiaries Cash Dividends Allowable to be Declared and Paid to Parent Company By Consolidated Subsidiaries Investments, Debt and Equity Securities [Abstract] Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Net Interest Income Net Interest Income [Member] Net Interest income received. Negotiated Exchange Agreement Information [Axis] Negotiated Exchange Agreement Information [Axis] Negotiated Exchange Agreement Information [Axis] Negotiated Exchange Agreement Information [Domain] Negotiated Exchange Agreement Information [Domain] Negotiated Exchange Agreement Information [Domain] Exchange Agreements Exchange Agreements [Member] Exchange Agreements [Member] Common Stock Common Stock [Member] Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Warrants Expiring January 16, 2019 Warrants Expiring January 16, 2019 [Member] Warrants Expiring January 16, 2019 [Member] Warrants Expiring October 18, 2018 Warrants Expiring October 18, 2018 [Member] Warrants Expiring October 18, 2018 [Member] Series 1 Preferred Stock Series 1 Preferred Stock [Member] Series 1 Preferred Stock [Member] Series T Preferred Stock Series T Preferred Stock [Member] Series T Preferred Stock [Member] Series V, X, W, and Z Preferred Stock Series V, X, W, and Z Preferred Stock [Member] Series V, X, W, and Z Preferred Stock [Member] Series V Preferred Stock Series V Preferred Stock [Member] Series V Preferred Stock [Member] Series X Preferred Stock Series X Preferred Stock [Member] Series X Preferred Stock [Member] Series W Preferred Stock Series W Preferred Stock [Member] Series W Preferred Stock [Member] Series Z Preferred Stock Series Z Preferred Stock [Member] Series Z Preferred Stock [Member] Series X, W, Z Preferred Stock Series X, W, Z Preferred Stock [Member] Series X, W, Z Preferred Stock [Member] Series Y Preferred Stock Series Y Preferred Stock [Member] Series Y Preferred Stock [Member] Preferred Stock Series H, J, 6, 7, and 8 Preferred Stock Series H, J, 6, 7, and 8 [Member] Preferred Stock Series H, J, 6, 7, and 8 [Member] Series U Preferred Stock Series U Preferred Stock [Member] Series U Preferred Stock [Member] Trust Preferred Securities Trust Preferred Securities [Member] Trust Preferred Securities [Member] Non-Convertible Preferred Stock and Trust Preferred Securities Non-Convertible Preferred Stock and Trust Preferred Securities [Member] Non-Convertible Preferred Stock and Trust Preferred Securities [Member] Series F and G Preferred Stock Series F and G Preferred Stock [Member] Series F and G Preferred Stock [Member] Common dividends (in dollars per share) Common Stock, Dividends, Per Share, Declared Redempmtion of stock (shares) Redempmtion of stock Warrants outstanding Class of Warrant or Right, Number of Securities Called by Warrants or Rights Exercise price per warrant Class of Warrant or Right, Exercise Price of Warrants or Rights Minimum required dividend rate Class of Warrant or Right, Minimum Dividends Per Share Declared Triggering Adjustment to Exercise Price of Warrant Class of Warrant or Right, Minimum Dividends Per Share Declared Triggering Adjustment to Exercise Price of Warrant Cash dividends declared per common share (dollars per share) Common Stock, Dividends, Per Share, Cash Paid Stock issued (shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Shares paid for tax withholding for share based compensation (shares) Shares Paid for Tax Withholding for Share Based Compensation Share-based compensation, number of shares authorized (shares) Common Stock, Capital Shares Reserved for Future Issuance Preferred stock dividends Shares issued during the period (shares) Stock Issued During Period, Shares, New Issues Liquidation preference (in usd per share) Preferred Stock, Liquidation Preference Per Share Common stock issued in connection with exchanges of preferred stock and trust preferred securities Redeemable and nonredeemable preferred stock Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Share Value, Amount Exchanged Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Share Value, Amount Exchanged Payments Included in Exchange of Preferred Stock and Trust Preferred Securities for Common Stock Payments Included in Exchange of Preferred Stock and Trust Preferred Securities for Common Stock The cash outlow to reacquire preferred stock and trust preferred securities in addition to the fair value of common stock issued in the exchange. Increase In Retained Earnings And Net Income Applicable To Common Shareholders Excess Carrying Value of the Preferred Stock and Trust Preferred Securities Over Common Stock Issued in Exchange Excess Carrying Value of the Preferred Stock and Trust Preferred Securities Over Common Stock Issued in Exchange Other income (loss) Gain (Loss) on Exchange of Preferred Stock and Trust Preferred Securities Recorded in Income Gain (Loss) on Exchange of Preferred Stock and Trust Preferred Securities Recorded in Income 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] Balance, January 1 Unrecognized Tax Benefits Increases related to positions taken during the current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Increases related to positions taken during prior years Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Decreases related to positions taken during prior years Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Settlements Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Expiration of statute of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Balance, December 31 Changes in prior period UTBs, including interest Effective Income Tax Rate Reconciliation, Changes in Prior Period Unrealized Tax Benefits, Including Interest, Amount Effective Income Tax Rate Reconciliation, Changes in Prior Period Unrealized Tax Benefits, Including Interest, Amount Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract] Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract] 2015 Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months 2016 Defined Benefit Plan, Expected Future Benefit Payments, Year Two 2017 Defined Benefit Plan, Expected Future Benefit Payments, Year Three 2018 Defined Benefit Plan, Expected Future Benefit Payments, Year Four 2019 Defined Benefit Plan, Expected Future Benefit Payments, Year Five 2020 - 2024 Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter Defined Benefit Plan, Expected Future Medicare Subsidy Received, Fiscal Year Maturity [Abstract] Prescription Drug Subsidy Receipts, Fiscal Year Maturity [Abstract] 2015 Prescription Drug Subsidy Receipts, Next Twelve Months 2016 Prescription Drug Subsidy Receipts, Year Two 2017 Prescription Drug Subsidy Receipts, Year Three 2018 Prescription Drug Subsidy Receipts, Year Four 2019 Prescription Drug Subsidy Receipts, Year Five 2020-2024 Prescription Drug Subsidy Receipts, after Year Five U.S. Commercial Real estate acquired through foreclosure Real Estate Acquired Through Foreclosure Impaired Financing Receivable, Unpaid Principal Balance [Abstract] Impaired Financing Receivable, Unpaid Principal Balance [Abstract] With no recorded allowance Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance With an allowance recorded Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Total Impaired Financing Receivable, Unpaid Principal Balance Impaired Financing Receivable, Recorded Investment [Abstract] Impaired Financing Receivable, Recorded Investment [Abstract] With no recorded allowance Impaired Financing Receivable, with No Related Allowance, Recorded Investment With an allowance recorded Impaired Financing Receivable, with Related Allowance, Recorded Investment Total Impaired Financing Receivable, Recorded Investment Related Allowance Impaired Financing Receivable, Related Allowance Impaired Financing Receivable, Average Recorded Investment [Abstract] Impaired Financing Receivable, Average Recorded Investment [Abstract] With no recorded allowance Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment With an allowance recorded Impaired Financing Receivable, with Related Allowance, Average Recorded Investment Total Impaired Financing Receivable, Average Recorded Investment Impaired Financing Receivable, Interest Income, Accrual and Cash Basis Method [Abstract] Impaired Financing Receivable, Interest Income, Accrual and Cash Basis Method [Abstract] Impaired Financing Receivable, Interest Income, Accrual and Cash Basis Method [Abstract] With no recorded allowance Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method and Cash Method Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method and Cash Method With an allowance recorded Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method and Cash Method Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method and Cash Method Total Impaired Financing Receivable, Interest Income, Accrual Method and Cash Method Impaired Financing Receivable, Interest Income, Accrual Method and Cash Method Terminated cash flow hedges, maximum length of time over which forecasted transactions are hedges Terminated Cash Flow Hedges, Maximum Length of Time Over Which Forecasted Transactions Are Hedged Terminated Cash Flow Hedges, Maximum Length of Time Over Which Forecasted Transactions Are Hedged Terminated cash flow hedges, maximum length of time over which forecasted transactions are hedged for substantial number Terminated Cash Flow Hedges, Length of Time Over Which Forecasted Transactions Are Substantially Hedged Terminated Cash Flow Hedges, Length of Time Over Which Forecasted Transactions Are Substantially Hedged For open or future cash flow hedges, maximum length of time over which forecasted transactions hedged Open or Future Cash Flow Hedges, Maximum Length of Time over Which Forecasted Transactions Hedged Open or Future Cash Flow Hedges, Maximum Length of Time over Which Forecasted Transactions Hedged 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] ALM activities Segment Reconciling Items, Asset and Liability Management Activities [Member] Segment Reconciling Items, Asset and Liability Management Activities Equity investment income Segment Reconciling Items, Equity Investment Income (Loss) [Member] Segment Reconciling Items, Equity Investment Income (Loss) Liquidating businesses and other Segment Reconciling Items, Liquidating Businesses and Other [Member] Segment Reconciling Items, Liquidating Businesses and Other FTE basis adjustment Segment Reconciling Items, Fully Taxable Equivalent Basis Adjustment [Member] Segment Reconciling Items, Fully Taxable Equivalent Basis Adjustment Elimination of segment asset allocations to match liabilities Intersegment Eliminations [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Segments’ total revenue, net of interest expense (FTE basis) Revenues, Net of Interest Expense, Full Tax Equivalent Basis Revenue, at full tax equivalent basis, net of interest expense. Revenues Revenues Reclassification to net income Year-end total assets Earnings Per Share [Abstract] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Series L Preferred Stock Antidilutive Securities Excluded from Computation of Earnings Per Share, by Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Warrant Warrant [Member] Convertible Preferred Stock Subject to Mandatory Redemption Convertible Preferred Stock Subject to Mandatory Redemption [Member] Stock Options Employee Stock Option [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Average options to purchase shares of common stock Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Segments, Geographical Areas [Abstract] Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] Fair Value, Option Fair Value, Option [Text Block] Unpaid Principal Balance Financing Receivable, Modifications, Post-Modification, Unpaid Principal Balance Financing Receivable, Modifications, Unpaid Principal Balance Net Charge-offs Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down Schedule of Fair Value Option Elections Fair Value, Option, Quantitative Disclosures [Table Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Interest rate risk on long-term debt Interest Rate Risk On Long-Tern Debt [Member] Interest Rate Risk On Long Tern Debt [Member] Interest rate and foreign currency risk on long-term debt Interest Rate and Foreign Currency Risk on Long-Term Debt [Member] Interest rate and foreign currency risk on long-term debt. Interest rate risk on AFS securities Interest Rate Risk on Available-For-Sale Securities [Member] Interest Rate Risk On Available For Sale Securities Member. Price risk on commodity inventory Interest expense Interest Expense [Member] Interest income Interest Income [Member] Trading gain (loss) Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Effect of Fair Value Hedges on Results of Operations [Abstract] Effect of Fair Value Hedges on Results of Operations [Abstract] Derivative Gain (Loss) on Fair Value Hedges Recognized in Earnings Hedged Item Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge Hedge Ineffectiveness Gain (Loss) on Fair Value Hedge Ineffectiveness, Net Interest rate risk on variable-rate portfolios Interest Rate Risk on Variable-Rate Portfolios [Member] Interest Rate Risk On Variable Rate Portfolios Member. Price risk on restricted stock awards Price Risk on Restricted Stock Awards [Member] Price Risk On Restricted Stock Awards Foreign exchange risk Foreign Exchange Contract [Member] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Cash flow hedges Cash Flow Hedging [Member] Net investment hedges Net Investment Hedging [Member] Gains (Losses) Recognized in Accumulated OCI on Derivatives Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net Gains (Losses) in Income Reclassified from Accumulated OCI Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net Hedge Ineffectiveness and Amounts Excluded from Effectiveness Testing Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net Defined Benefit Plan, Asset Categories [Axis] Plan Asset Categories [Domain] Debt securities Debt Securities [Member] Real Estate Real Estate [Member] Other Other1 [Member] Other [Member] Defined Benefit Plan, Assets, Target Allocations [Abstract] Defined Benefit Plan, Assets, Target Allocations [Abstract] Equity Securities Minimum Defined Benefit Plan, Target Plan Asset Allocations Range Minimum Equity Securities Maximum Defined Benefit Plan, Target Plan Asset Allocations Range Maximum All Other All Other, Non-Segment [Member] All Other, Non-Segment [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Consumer & Business Banking Consumer & Business Banking Segment [Member] CBB which is comprised of our Deposits, Card Services and Business Banking businesses, offers a diversified range of credit, banking and investment products and services to consumers and business clients. Our CBB clients have access to a franchise that stretches coast to coast through 32 states and the District of Columbia, including 5,700 banking centers, 17,750 ATMs, nationwide call centers, and leading online and mobile platforms. Consumer Real Estate Services Consumer Real Estate Services Segment [Member] Consumer Real Estate Services Segment Global Wealth & Investment Management Global Wealth and Investment Management Segment [Member] GWIM provides comprehensive wealth management capabilities to a broad base of clients from emerging affluent to the ultra-high-net-worth. These services include investment and brokerage services, estate and financial planning, fiduciary portfolio management, cash and liability management and specialty asset management. GWIM also provides retirement and benefit plan services, philanthropic management and asset management to individual and institutional clients. In addition, GWIM includes the results of BofA Capital Management, the cash and liquidity asset management business that the Corporation retained following the sale of the Columbia long-term asset management business, and other miscellaneous items. GWIM also reflects the impact of migrating clients and their related deposit and loan balances to or from GWIM and Deposits, Home Loans & Insurance and the Corporation’s ALM activities. Subsequent to the date of migration, the associated net interest income, noninterest income and noninterest expense are recorded in the business to which the clients migrated. Global Banking Global Banking Segment [Member] Global Commercial Banking provides a wide range of lending-related products and services, integrated working capital management and treasury solutions to clients through the Corporation’s network of offices and client relationship teams along with various product partners. Clients include business banking and middle-market companies, commercial real estate firms and governments, and are generally defined as companies with sales up to $2 billion. Lending products and services include commercial loans and commitment facilities, real estate lending, asset-based lending and indirect consumer loans. Capital management and treasury solutions include treasury management, foreign exchange and short-term investing options. Global Markets Global Markets Segment [Member] Global Markets provides financial products, advisory services, financing, securities clearing, settlement and custody services globally to institutional investor clients in support of their investing and trading activities. Global Markets also works with commercial and corporate clients to provide debt and equity underwriting and distribution capabilities, merger-related and other advisory services, and risk management products using interest rate, equity, credit, currency and commodity derivatives, foreign exchange, fixed-income and mortgage-related products. As a result of the Corporation’s market-making activities in these products, it may be required to manage positions in government securities, equity and equity-linked securities, high-grade and high-yield corporate debt securities, commercial paper, MBS and ABS. Corporate banking services provide a wide range of lending-related products and services, integrated working capital management and treasury solutions to clients through the Corporation’s network of offices and client relationship teams along with various product partners. Corporate clients are generally defined as companies with sales greater than $2 billion. Net interest income (FTE basis) Interest Income (Expense) Net, Full Tax Equivalent Basis Interest Income (Expense) Net, Full Tax Equivalent Basis Noninterest income Noninterest Income Total revenue, net of interest expense (FTE basis) Other noninterest expense Noninterest Expense, Excluding Amortization of Intangible Assets Segment reporting information other noninterest expenses. Income (loss) before income taxes (FTE basis) Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest, Full Tax Equivalent Basis Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest, Full Tax Equivalent Basis Income tax expense (benefit) (FTE basis) Income Tax Expense (Benefit), Full Tax Equivalent Basis The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations and derived on a full tax equivalent basis (an adjustment for tax exempt income). Net income Year-end total assets Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Credit Score, Fico [Axis] Credit Score, Fico [Axis] Information by credit scores as defined by Fair Isaac Corporation (FICO), for example, but not limited to, greater than 740. Credit Score, Fico [Domain] Credit Score, Fico [Domain] [Domain] for Information by credit scores as defined by Fair Isaac Corporation (FICO), for example, but not limited to, greater than 740. Less than 620 Refreshed FICO, Score Less Than 620 [Member] Refreshed FICO, Score Less Than 620 Greater than or equal to 620 and less than 680 Refreshed FICO, Score between 620 and 680 [Member] Refreshed FICO, Score between 620 and 680 Greater than or equal to 680 and less than 740 Refreshed FICO, Score between 680 and 740 [Member] Refreshed FICO, Score between 680 and 740 Greater than or equal to 740 Refreshed FICO, Score Greater Than Or Equal To 740 [Member] Refreshed FICO, Score Greater Than Or Equal To 740 Other internal credit metrics Other Internal Credit Metrics [Member] Other Internal Credit Metrics [Member] Financing Receivable, Recorded Investment [Line Items] Financing Receivable, Recorded Investment [Line Items] Percentage from exited businesses Loans and Leases Receivable, Percentage From Exited Businesses Loans and Leases Receivable, Percentage From Exited Businesses Securities based lending overcollateralized Loans and Leases Receivable, Securities Based Lending Overcollateralized Loans and Leases Receivable, Securities Based Lending Overcollateralized Loans no longer originated by corporation Loans and Leases Receivable, Loans No Longer Originated by Corporation Loans and Leases Receivable, Loans No Longer Originated by Corporation Percentage outstanding, 30-89 days past due Financing Receivable, Recorded Investment, 30 to 89 Days Past Due, Percentage of Total Outstanding Financing Receivable, Recorded Investment, 30 to 89 Days Past Due, Percentage of Total Outstanding Deposits [Abstract] U.S. certificates of deposit and other time deposits Contractual Maturities, Time Deposits, Domestic, $100,000 or More [Abstract] Contractual Maturities, Time Deposits, Domestic, $100,000 or More [Abstract] Three Months or Less Time Deposits, $100,000 or More, Domestic, Three Months or Less Time Deposits, $100,000 or More, Domestic, Three Months or Less Over Three Months to Twelve Months Time Deposits, $100,000 or More, Domestic, Over Three Months to Twelve Months Time Deposits, $100,000 or More, Domestic, Over Three Months to Twelve Months Thereafter Time Deposits, $100,000 or More, Domestic, after 12 Months Time Deposits, $100,000 or More, Domestic, after 12 Months Total Time Deposits, $100,000 or More, Domestic Non-U.S. certificates of deposit and other time deposits Time Deposits, $100,000 or More, Foreign [Abstract] Time Deposits, $100,000 or More, Foreign [Abstract] Three Months or Less Time Deposits, $100,000 or More, Foreign, Three Months or Less Time Deposits, $100,000 or More, Foreign, Three Months or Less Over Three Months to Twelve Months Time Deposits, $100,000 or More, Foreign, Over Three Months To Twelve Months Time Deposits, $100,000 or More, Foreign, Over Three Months To Twelve Months Thereafter Time Deposits, $100,000 or More, Foreign, after 12 Months Time Deposits, $100,000 or More, Foreign, after 12 Months Total Time Deposits, $100,000 or More, Foreign Tax Credit Carryforward [Table] Tax Credit Carryforward [Table] Tax Credit Carryforward [Axis] Tax Credit Carryforward [Axis] Tax Credit Carryforward, Name [Domain] Tax Credit Carryforward, Name [Domain] General business credits General Business Tax Credit Carryforward [Member] Foreign tax credits Foreign Tax Credits [Member] Foreign Tax Credits [Member] Tax Credit Carryforward [Line Items] Tax Credit Carryforward [Line Items] Deferred Tax Asset Tax Credit Carryforward, Deferred Tax Asset Valuation Allowance Tax Credit Carryforward, Valuation Allowance Net Deferred Tax Asset Deferred Tax Assets, Tax Credit Carryforwards, Net Valuation Allowance Deferred Tax Assets, Tax Credit Carryforwards, Net of Valuation Allowance Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] UNITED KINGDOM UNITED KINGDOM Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Net operating losses – U.S. Domestic Tax Authority [Member] Net operating losses – U.K. and other Foreign Tax Authority [Member] Net operating losses – U.S. states State and Local Jurisdiction [Member] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Deferred Tax Asset Deferred Tax Assets, Operating Loss Carryforwards Valuation Allowance Operating Loss Carryforwards, Valuation Allowance Net Deferred Tax Asset Deferred Tax Assets, Operating Loss Carryforwards, Net Valuation Allowance Deferred Tax Assets, Operating Loss Carryforwards, Net of Valuation Allowance Net operating losses before benefit of federal deductions Deferred Tax Asset, Operating Loss Carryforwards, Before Federal Deductions Deferred Tax Asset, Operating Loss Carryforwards, Before Federal Deductions Valuation allowance before considering benefit of federal deductions Operating Loss Carryforwards, Valuation Allowance, Before Federal Deductions Operating Loss Carryforwards, Valuation Allowance, Before Federal Deductions Income Statement [Abstract] Interest income Interest and Dividend Income, Operating [Abstract] Loans and leases Interest and Fee Income, Loans and Leases Debt securities Interest and Dividend Income, Securities, Operating Federal funds sold and securities borrowed or purchased under agreements to resell Interest Income, Federal Funds Sold and Securities Purchased under Agreements to Resell Trading account assets Interest and Dividend Income, Securities, Operating, Trading or Measured at Fair Value Other interest income Other Interest and Dividend Income Total interest income Interest and Dividend Income, Operating Interest expense Interest Expense [Abstract] Deposits Interest Expense, Deposits Short-term borrowings Interest Expense, Short-term Borrowings Trading account liabilities Interest Expense, Trading Liabilities Long-term debt Interest Expense, Long-term Debt Total interest expense Interest Expense Net interest income Interest Income (Expense), Net Noninterest income Noninterest Income [Abstract] Card income Fees and Commissions, Credit and Debit Cards Service charges Fees and Commissions, Depositor Accounts Investment and brokerage services Brokerage Commissions Revenue Investment banking income Investment Banking Revenue Equity investment income Principal Investment Gain (Loss) Trading account profits Trading Gain (Loss) Mortgage banking income Fees and Commissions, Mortgage Banking Gains on sales of debt securities Marketable Securities, Realized Gain (Loss), Excluding Other than Temporary Impairments Other income (loss) Noninterest Income, Other Operating Income Total noninterest income Total revenue, net of interest expense Noninterest expense Noninterest Expense [Abstract] Personnel Labor and Related Expense Occupancy Occupancy, Net Equipment Equipment Expense Marketing Marketing and Advertising Expense Professional fees Professional Fees Data processing Information Technology and Data Processing Telecommunications Communication Other general operating Other Noninterest Expense Total noninterest expense Noninterest Expense Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Income tax expense (benefit) Income Tax Expense (Benefit) Preferred stock dividends Preferred Stock Dividends, Income Statement Impact Net income applicable to common shareholders Net Income (Loss) Available to Common Stockholders, Basic Per common share information Earnings (in dollars per share) Earnings Per Share, Basic Diluted earnings (in dollars per share) Earnings Per Share, Diluted Dividends paid (in dollars per share) Average common shares issued and outstanding (in thousands) Weighted Average Number of Shares Outstanding, Basic Average diluted common shares issued and outstanding (in thousands) Weighted Average Number of Shares Outstanding, Diluted Transfers and Servicing [Abstract] Schedule of Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets [Table] Schedule of Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets [Table] Fixed Fixed Rate Residential Mortgage [Member] Adjustable Adjustable Rate Residential Mortgage [Member] Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items] Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items] Impact of 10 percent decrease Sensitivity Analysis of Fair Value, Transferor's Interest in Transferred Financial Assets, Impact of 10 Percent Decrease in Prepayment Weighted Average Life Sensitivity Analysis of Fair Value, Transferor's Interest in Transferred Financial Assets, Impact of 10 Percent Decrease in Prepayment Weighted Average Life Impact of 20 percent decrease Sensitivity Analysis of Fair Value, Transferor's Interest in Transferred Financial Assets, Impact of 20 Percent Decrease in Prepayment Weighted Average Life Sensitivity Analysis of Fair Value, Transferor's Interest in Transferred Financial Assets, Impact of 20 Percent Decrease in Prepayment Weighted Average Life Impact of 10 percent increase Sensitivity Analysis of Fair Value, Transferor's Interest in Transferred Financial Assets, Impact of 10 Percent Increase in Prepayment Weighted Average Life This represents the hypothetical impact of a 10 percent change on the fair value and weighted average lives of interests that continue to be held by the transferor, servicing assets, or servicing liabilities as of the balance sheet date. Impact of 20 percent increase Sensitivity Analysis of Fair Value, Transferor's Interest in Transferred Financial Assets, Impact of 20 Percent Increase in Prepayment Weighted Average Life This represents the hypothetical impact of a 20 percent change on the fair value and weighted average lives of interests that continue to be held by the transferor, servicing assets, or servicing liabilities as of the balance sheet date. Prepayment rates, impact of 10 percent increase Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 10 Percent Increase in Prepayment Speed Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 10 Percent Increase in Prepayment Speed Prepayment rates, impact of 20 percent increase Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 20 Percent Increase in Prepayment Speed Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 20 Percent Increase in Prepayment Speed Prepayment rates, impact of 10 percent decrease Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 10 Percent Decrease in Prepayment Speed Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 10 Percent Decrease in Prepayment Speed Prepayment rates, impact of 20 percent decrease Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 20 Percent Decrease in Prepayment Speed Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 20 Percent Decrease in Prepayment Speed OAS level, impact of 100 bps decrease Sensitivity Analysis of Fair Value, Transferor's Interest in Transferred Financial Assets, Impact of 100 Basis Points Decrease in Option Adjusted Spread Sensitivity Analysis of Fair Value, Transferor's Interest in Transferred Financial Assets, Impact of 100 Basis Points Decrease in Option Adjusted Spread OAS level, impact of 200 bps decrease Sensitivity Analysis of Fair Value, Transferor's Interest in Transferred Financial Assets, Impact of 200 Basis Points Decrease in Option Adjusted Spread Sensitivity Analysis of Fair Value, Transferor's Interest in Transferred Financial Assets, Impact of 200 Basis Points Decrease in Option Adjusted Spread OAS level, impact of 100 bps increase Sensitivity Analysis of Fair Value, Transferor's Interest in Transferred Financial Assets, Impact of 100 Basis Points Increase in Option Adjusted Spread Sensitivity Analysis of Fair Value, Transferor's Interest in Transferred Financial Assets, Impact of 100 Basis Points Increase in Option Adjusted Spread OAS level, impact of 200 bps increase Sensitivity Analysis of Fair Value, Transferor's Interest in Transferred Financial Assets, Impact of 200 Basis Points Increase in Option Adjusted Spread This represents the hypothetical impact of a 200bps change to the option adjusted spread level on the fair value of interests that continue to be held by the transferor, servicing assets, or servicing liabilities as of the balance sheet date. Condensed Financial Information of Parent Company Only Disclosure [Abstract] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Successor Successor [Member] Predecessor Predecessor [Member] 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] Equity in undistributed (earnings) losses of subsidiaries Income (Loss) from Subsidiaries, Net of Tax Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Net sales (purchases) of securities Payments for (Proceeds from) Investments Net payments from (to) subsidiaries Payments for (Proceeds from) Subsidiaries Represents net payments from (to) subsidiaries. Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Net increase (decrease) in other advances Proceeds from (Repayments of) Other Advances Proceeds from (Repayments of) Other Advances Proceeds from issuance of preferred stock Redemption of preferred stock Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Loans held-for-sale Proceeds including cash and securities from sales securitizations and paydowns of loans held for sale Proceeds from Sale and Collection of Loans Held-for-sale Marketable Securities [Table] Marketable Securities [Table] Marketable Securities [Table] Fannie Mae Federal National Mortgage Association Certificates and Obligations (FNMA) [Member] Government National Mortgage Association Government National Mortgage Association Certificates and Obligations (GNMA) [Member] U.S. Treasury US Treasury Securities [Member] Freddie Mac Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member] Marketable Securities [Line Items] Marketable Securities [Line Items] [Line Items] for Marketable Securities [Table] Amortized Cost Debt Securities, Amortized Cost, Amount of Debt Securities Exceeds 10 Percent of Stockholders' Equity Debt Securities, Amortized Cost, Amount of Debt Securities Exceeds 10 Percent of Stockholders' Equity Fair Value Debt Securities, Fair Value, Amount of Debt Securities Exceeds 10 Percent of Stockholders' Equity Debt Securities, Fair Value, Amount of Debt Securities Exceeds 10 Percent of Stockholders' Equity Other income (loss) Other Income (Loss) [Member] Other Income (Loss) [Member] Trust certificates outstanding Trust certificates outstanding This represents the amount of trust certificates outstanding for both consolidated and unconsolidated trusts in rapid amortization related to home equity securitization transactions. Remaining borrowing capacity on home equity line Unused Commitments to Extend Credit Assets deconsolidated Deconsolidation, Total Assets Deconsolidation, Total Assets Liabilities deconsolidated Deconsolidation, Total Liabilities Deconsolidation, Total Liabilities Gain (loss) on deconsolidation Deconsolidation, Gain (Loss), Amount Mortgage banking income Fees and Commissions, Mortgage Banking [Member] Fees and Commissions, Mortgage Banking [Member] Other income Noninterest Income, Other Operating Income [Member] Noninterest Income, Other Operating Income [Member] Personnel expense Labor and Related Expense [Member] Labor and Related Expense [Member] Interest rate risk on mortgage banking income Interest Rate Risk on Mortgage Banking Income [Member] Interest Rate Risk on Mortgage Banking Income [Member] Credit risk on loans Credit Risk on Loans [Member] Credit Risk on Loans [Member] Interest rate and foreign currency risk on ALM activities Interest Rate and Foreign Currency Risk on Asset Liability Management Activities [Member] Interest Rate and Foreign Currency Risk on Asset Liability Management Activities [Member] Other Other Contract [Member] Interest rate lock commitments Interest Rate Lock Commitments [Member] Gain (loss) on derivatives not designated as hedging Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Commitments and Contingencies Disclosure [Abstract] Merchant Processing Servicers, Sponsored Entities Merchant Processing Servicers, Sponsored Entities [Member] Merchant Processing Servicers, Sponsored Entities [Member] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] Merchant Servicing Joint Venture Merchant Servicing Joint Venture [Member] Merchant Servicing Joint Venture [Member] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Payment Protection Insurance Payment Protection Insurance [Member] Payment Protection Insurance [Member] Other Commitments [Axis] Other Commitments [Axis] Other Commitments [Domain] Other Commitments [Domain] Loan commitments Loan Purchase Commitments [Member] Forward-Dated Resale and Securities Borrowing Agreements Forward-Dated Resale and Securities Borrowing Agreements [Member] Forward-Dated Resale and Securities Borrowing Agreements [Member] Forward-Dated Repurchase and Securities Lending Agreements Forward-Dated Repurchase and Securities Lending Agreements [Member] Forward-Dated Repurchase and Securities Lending Agreements [Member] Unfunded Equity Investment Commitments Unfunded Equity Investment Commitments [Member] Unfunded Equity Investment Commitments [Member] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Life Insurance Book Value Protection Life Insurance Book Value Protection [Member] Life Insurance Book Value Protection [Member] Employee Retirement Protection Employee Retirement Protection [Member] Employee Retirement Protection [Member] Merchant Services Merchant Services [Member] Merchant Services [Member] Other Guarantee Other Guarantees [Member] Other Guarantees [Member] Commercial Banks Commercial Banks [Member] Commercial Banks [Member] Other commitments Other Commitment Operating Leases, Future Minimum Payments Due [Abstract] Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] 2015 Operating Leases, Future Minimum Payments Receivable, Current 2016 Operating Leases, Future Minimum Payments, Due in Two Years 2017 Operating Leases, Future Minimum Payments, Due in Three Years 2018 Operating Leases, Future Minimum Payments, Due in Four Years 2019 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Notional amount of derivatives Derivative, Notional Amount Net fair value of bank-owned life insurance book value protection Guarantees, Fair Value Disclosure Transactions processed and settled by sponsored entities Merchant Services, Transactions Processed And Settled By Sponsored Entities The amount of merchant services transactions processed and settled by sponsored merchant processing servicers that process credit and debit card transactions on behalf of various merchants. Losses as result of cardholder disputed transactions Merchant Services, Losses Recorded by Sponsored Entities This represents losses recorded by the Corporation as a result of cardholder disputed transactions. Equity method investment ownership percentage Equity Method Investment, Ownership Percentage Merchant escrow deposits held as collateral Merchant Services, Escrow Deposits Held As Collateral by Sponsored Entities This amount represents merchant escrow deposits held as collateral on behalf of the joint venture which may be used to offset amounts due from individual merchants. Maximum potential exposure Guarantor Obligations, Maximum Exposure, Undiscounted Loss contingency accrual Loss Contingency Accrual Provision Loss Contingency Accrual, Provision Derivative [Table] Derivative [Table] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Trading and Other Risk Management Derivatives Not Designated as Hedging Instrument [Member] Qualifying Accounting Hedges Designated as Hedging Instrument [Member] Derivative, by Nature [Axis] Derivative, by Nature [Axis] Derivative, Name [Domain] Derivative, Name [Domain] Swaps Swap [Member] Spot, futures and forwards Spot Futures and Forwards [Member] Spot Futures And Forwards. Futures and forwards Futures and Forwards [Member] Futures And Forwards Member. Options Options Held [Member] Total return swaps/other Other Credit Derivatives [Member] Position [Axis] Position [Axis] Position [Domain] Position [Domain] Written options Short [Member] Purchased options Long [Member] Credit Derivatives Contract Type [Axis] Credit Derivatives Contract Type [Axis] Credit Derivatives Contract Type [Domain] Credit Derivatives Contract Type [Domain] Purchased credit derivatives Credit Default Swap, Buying Protection [Member] Written credit derivatives Credit Default Swap, Selling Protection [Member] Derivative [Line Items] Derivative [Line Items] Notional Amount of Derivatives, [Abstract] Notional Disclosures [Abstract] Contract/Notional Derivative Assets [Abstract] Derivative Asset [Abstract] Less: Legally enforceable master netting agreements Derivative Asset, Fair Value, Gross Liability Less: Cash collateral received/paid Derivative Asset, Collateral, Obligation to Return Cash, Offset Derivative Liabilities [Abstract] Derivative Liability [Abstract] Less: Legally enforceable master netting agreements Derivative Liability, Fair Value, Gross Asset Less: Cash collateral received/paid Derivative Liability, Collateral, Right to Reclaim Cash, Offset Regulatory Agency [Axis] Regulatory Agency [Axis] Regulatory Agency [Domain] Regulatory Agency [Domain] Federal Housing Administration Federal Housing Administration [Member] Federal Housing Administration [Member] Non-performing troubled debt with no change in repayment terms at time of discharge, current with contractual payments Financing Receivable, Recorded Investment, Current Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due Nonperforming loans discharged more than twelve months prior (greater than) Loans and Leases Receivable, Nonperforming, Amount Discharged More than Twelve Months Prior Loans and Leases Receivable, Nonperforming, Amount Discharged More than Twelve Months Prior Nonperforming loans discharged more than twenty four months prior (greater than) Loans and Leases Receivable, Nonperforming, Amount Discharged More than Twenty Four Months Prior Loans and Leases Receivable, Nonperforming, Amount Discharged More than Twenty Four Months Prior Gain (loss) on the sale of loans and leases receivable Loans and Leases Receivable, Gain (Loss) on Sales, Net Nonperforming loans and leases Financing Receivable, Recorded Investment, Nonaccrual Status Accruing past due 90 days or more Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Nonaccruing troubled debt restructurings excluded from nonperforming loans Nonaccruing Troubled Debt Restructurings Excluded from Nonperforming Loans Nonaccruing troubled debt restructurings excluded from nonperforming loans. Basel 3 tier 1 common capital transition percentage Basel Three Transition, Annual Increment Basel Three Transition, Annual Increment Pension and Other Postretirement Benefits Disclosure Pension and Other Postretirement Benefits Disclosure [Text Block] Summary of Significant Accounting Principles Significant Accounting Policies [Text Block] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract] Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments [Abstract] Gross gains Available-for-sale Securities, Gross Realized Gains Gross losses Available-for-sale Securities, Realized Losses, Excluding Other than Temporary Impairments Net gains on sales of AFS debt securities Income tax expense attributable to realized net gains on sales of AFS debt securities Available-for-sale Securities, Income Tax Expense on Realized Gain (Loss) Excluding Other Than Temporary Impairments Available-for-sale Securities, Income Tax Expense on Realized Gain (Loss) Excluding Other Than Temporary Impairments Loans and Loan Commitments Loans [Member] Fair value option, changes in borrower specific credit risk, gains (losses) on assets Fair Value, Option, Credit Risk, Gains (Losses) on Assets Fair Value Carrying Amount Assets Fair Value, Option, Fair Value Carrying Amount, Assets Fair Value, Option, Fair Value Carrying Amount, Assets Fair Value Carrying Amount Liabilities Fair Value, Option, Fair Value Carrying Amount, Liabilities Fair Value, Option, Fair Value Carrying Amount, Liabilities Contractual Principal Outstanding Assets Fair Value, Option, Contractual Principal Outstanding, Assets Fair Value, Option, Contractual Principal Outstanding, Assets Contractual Principal Outstanding Liabilities Fair Value, Option, Contractual Principal Outstanding, Liabilities Fair Value, Option, Contractual Principal Outstanding, Liabilities Fair Value Carrying Amount Less Unpaid Principal Assets Fair Value, Option, Aggregate Differences, Assets Fair Value, Option, Aggregate Differences, Assets Fair Value Carrying Amount Less Unpaid Principal Liabilities Fair Value, Option, Aggregate Differences, Liabilities Fair Value, Option, Aggregate Differences, Liabilities Pre-Modification Interest Rate Financing Receivable, Modifications, Pre-Modification Interest Rate Financing Receivable, Modifications, Pre-Modification Interest Rate Post-Modification Interest Rate Financing Receivable, Modifications, Post-Modification Interest Rate Financing Receivable, Modifications, Post-Modification Interest Rate Principal Forgiveness Financing Receivable, Modifications, Principal Forgiveness This represents the amount of principal forgiven in a troubled debt restructuring modification. U.S. Treasury and agency securities Non-U.S. securities Foreign Securities [Member] Foreign Securities Corporate/Agency bonds Corporate and Agency Bonds [Member] Corporate and Agency Bonds [Member] Total taxable securities Taxable Securities [Member] Taxable Securities Member. Available-for-sale debt securities Accumulated Net Unrealized Investment Gain (Loss) [Member] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Domain] Financial Instrument Performance Status [Domain] [Domain] for Financial Instrument Performance Status [Axis] Nonperforming Financial Instruments Nonperforming Financial Instruments [Member] Nonperforming Financial Instruments [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Available-for-sale Debt Securities: Available-for-sale Debt Securities, Amortized Cost Basis [Abstract] Amortized Cost Available-for-sale Debt Securities, Amortized Cost Basis Gross Unrealized Gains Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax Debt securities carried at fair value Available-for-sale Equity Securities: Available-for-sale Equity Securities, Amortized Cost Basis [Abstract] Amortized Cost Available-for-sale Equity Securities, Amortized Cost Basis Gross Unrealized Gains Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax Fair Value Available-for-sale Securities, Equity Securities Available-for-sale securities, percent held by rating Available-for-sale Debt Securities, Underlying Collateral Type By Credit Rating Percentage Available-for-sale Securities, Debt Maturities, Percent Held by Rating Accumulated other comprehensive income tax benefit Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Tax Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Tax Other Debt Securities, Carried at Fair Value: Other Debt Securities, Carried at Fair Value [Abstract] Other Debt Securities, Carried at Fair Value [Abstract] Amortized Cost Other Debt Securities Carried at Fair Value, Amortized Cost Other Debt Securities Carried at Fair Value, Amortized Cost Gross Unrealized Gains Other Debt Securities Carried at Fair Value, Gross Unrealized Gain Other Debt Securities Carried at Fair Value, Gross Unrealized Gain Gross Unrealized Losses Other Debt Securities Carried at Fair Value, Gross Unrealized Loss Other Debt Securities Carried at Fair Value, Gross Unrealized Loss Fair Value Amortized Cost Debt Securities Carried at Fair Value, Amortized Cost Debt Securities Carried at Fair Value, Amortized Cost Gross Unrealized Gains Debt Securities Carried at Fair Value, Gross Unrealized Gain Debt Securities Carried at Fair Value, Gross Unrealized Gain Gross Unrealized Losses Debt Securities Carried at Fair Value, Gross Unrealized Loss Debt Securities Carried at Fair Value, Gross Unrealized Loss Held-to-maturity Securities: Held-to-maturity Securities [Abstract] Amortized Cost Gross Unrealized Gains Held-to-maturity Securities, Accumulated Unrecognized Holding Gain Gross Unrealized Losses Held-to-maturity Securities, Accumulated Unrecognized Holding Loss Held-to-maturity, fair value Held-to-maturity Securities, Fair Value Debt securities: Debt Securities [Abstract] Debt securities [Abstract] Amortized Cost Debt Securities Amortized Cost Debt Securities Amortized Cost Gross Unrealized Gains Debt Securities Gross Unrealized Gain Debt Securities Gross Unrealized Gain Gross Unrealized Losses Debt Securities Gross Unrealized Loss Debt Securities Gross Unrealized Loss Fair Value Mortgage Servicing Rights Transfers and Servicing of Financial Assets [Text Block] Defined Benefit Plan, Asset Categories [Axis] Plan Asset Categories [Domain] Postretirement Health and Life Plans Other Postretirement Benefit Plan [Member] Service period to become vested Defined Benefit Plan, Requisite Service Period Defined Benefit Plan, Requisite Service Period Threshold of highest consecutive paid years Defined Benefit Plan, Threshold of Highest Consecutive Paid Years Defined Benefit Plan, Threshold of Highest Consecutive Paid Years Threshold of years of employment Defined Benefit Plan, Threshold of Years of Employment Defined Benefit Plan, Threshold of Years of Employment Plan amendments Defined Benefit Plan, Plan Amendments Increase in AOCI, net of tax Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost (Credit) Arising During Period, Net of Tax Curtailments Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments Increase from change in mortality assumption Defined Benefit Plan, Benefit Obligation, Increase (Decrease) From Change in Mortality Assumption Defined Benefit Plan, Benefit Obligation, Increase (Decrease) From Change in Mortality Assumption Increase from change in weighted average discount rates Defined Benefit Plan, Benefit Obligation, Increase (Decrease) From Change in Weighted Average Discount Rates Defined Benefit Plan, Benefit Obligation, Increase (Decrease) From Change in Weighted Average Discount Rates Expected return on plan assets Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets Percentage of prior years market gains (losses) recognized at next measurement date Defined Benefit Plans, Percentage of Prior Years Market Gains (Losses) Recognized at Next Measurement Date Represents the prior years market gains losses recognized by asset valuation method for qualified pension plans. Percentage of prior years market gains (losses) recognized equally over 4 year period Defined Benefit Plans, Percentage of Prior Years Market Gains (Losses) Recognized Equally Over Four Year Period Represents the remaining market gains losses recognized by asset valuation method for qualified pension plans. Estimated future employer contributions in next fiscal year Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year Percentage of unrecognized gain (loss) recognized during the period Defined Benefit Plans, Percentage of Unrecognized Gain (Loss) Recognized During Period Represents the unrecognized gain loss percentage for post retirement health care plan. Effect of 25 basis point decline in discount rate on net periodic benefit cost Defined Benefit Plans, Effect of 25 Basis Point Decline in Discount Rate on Net Periodic Benefit Cost Defined Benefit Plans, Effect of 25 Basis Point Decline in Discount Rate on Net Periodic Benefit Cost Effect of 25 basis point decline in expected return on plan assets on net periodic benefit cost Defined Benefit Plans, Effect of 25 Basis Point Decline in Expected Return of Plan Assets on Net Periodic Benefit Cost Defined Benefit Plans, Effect of 25 Basis Point Decline in Expected Return of Plan Assets on Net Periodic Benefit Cost Plan assets recognized in the next fiscal year with respect to decline in discount rate Defined Benefit Plans, Effect of 25 Basis Point Decline in Discount Rate on Net Periodic Benefit Cost Recognized in Next Fiscal Year Defined Benefit Plans, Effect of 25 Basis Point Decline in Discount Rate on Net Periodic Benefit Cost Recognized in Next Fiscal Year Plan assets recognized in the next fiscal year with respect to decline in expected return Defined Benefit Plans, Effect of 25 Basis Point Decline in Expected Return of Plan Assets on Net Periodic Benefit Cost Recognized in Next Fiscal Year Defined Benefit Plans, Effect of 25 Basis Point Decline in Expected Return of Plan Assets on Net Periodic Benefit Cost Recognized in Next Fiscal Year Health care cost trend rate assumed for next fiscal year Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year Ultimate health care cost trend rate Defined Benefit Plan, Ultimate Health Care Cost Trend Rate Effect of 1% increase on service and interest cost components Defined Benefit Plan, Effect of One Percentage Point Increase on Service and Interest Cost Components Effect of 1% increase on accumulated postretirement benefit obligatio Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation Effect of 1% decrease on service and interest cost components Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components Effect of 1% decrease on accumulated postretirement benefit obligation Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation Amount of employer and related party securities included in plan assets Defined Benefit Plan, Amount of Employer and Related Party Securities Included in Plan Assets Actual plan asset allocations Defined Benefit Plan, Actual Plan Asset Allocations Defined Contribution Plan: Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract] Cost recognized Defined Contribution Plan, Cost Recognized Number of common stock shares held in plan Defined Contribution Plan, Number of Common Stock Shares Held in Plan Represents the common stock held by defined contribution plans shares. Dividend payments to the plan Defined Contribution Plan, Dividend Payments to the Plan Represents the payments to plans for dividends on common stock. Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Available-for-sale Securities, before Tax Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax, [Abstract] Net change in fair value, before Tax Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax Net realized gains reclassified into earnings, before Tax Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI For Sale and Write-down Of Securities, Before Tax Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI For Sale and Write-down Of Securities, Before Tax Net change, before Tax Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax, Portion Attributable to Parent Available-for-sale Securities, Tax Other Comprehensive Income (Loss), Available-for-sale Securities, Tax [Abstract] Net change in fair value, Tax Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Net realized gains reclassified into earnings, Tax Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI For Sale and Write-down Of Securities, Tax Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI For Sale and Write-down Of Securities, Tax Net change, Tax Other Comprehensive Income (Loss), Available-for-sale Securities, Tax, Portion Attributable to Parent Available-for-sale Securities, after Tax Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax [Abstract] Net change in fair value, after Tax Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Net realized gains reclassified into earnings, after Tax Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI For Sale and Write-down Of Securities, Net of Tax Other Comprehensive Income (Loss), Reclassification Adjustment From AOCI For Sale and Write-down Of Securities, Net of Tax Net changer, after Tax Derivatives, before Tax Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax [Abstract] Net change in fair value, before Tax Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Net realized losses reclassified into earnings, before Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax Net change, before Tax Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax, Portion Attributable to Parent Derivatives, Tax Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Effect [Abstract] Net change in fair value, Tax Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax Net realized losses reclassified into earnings, Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax Net change, Tax Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax, Portion Attributable to Parent Derivatives, after Tax Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax [Abstract] Net change in fair value, after Tax Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Net realized losses reclassified into earnings, after Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax Net change, after Tax Employee benefit plans, before Tax Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax, [Abstract] Net increase in fair value, before tax Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment Excluding Finalization, before Reclassification Adjustments and Tax Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment Excluding Finalization, before Reclassification Adjustments and Tax Net realized losses reclassified into earnings, before Tax Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax Settlements and curtailments, before Tax Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, before Tax Net change, before Tax Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax, Portion Attributable to Parent Employee benefit plans, Tax Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax [Abstract] Net increase in fair value, tax Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans Excluding Finalization, before Reclassification Adjustments, Tax Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans Excluding Finalization, before Reclassification Adjustments, Tax Net realized losses reclassified into earnings, Tax Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Tax Settlements and curtailments, Tax Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, Tax Net change, Tax Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax, Portion Attributable to Parent Employee benefit plans, after Tax Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax [Abstract] Net increase in fair value, after tax Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment Excluding Finalization, before Reclassification Adjustments, Net of Tax Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment Excluding Finalization, before Reclassification Adjustments, Net of Tax Net realized losses reclassified into earnings, after Tax Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Net of Tax Settlements and curtailments, after Tax Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, Net of Tax Net change, after Tax Foreign currency, before Tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax [Abstract] Net increase (decrease) in fair value, before Tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax Net realized (gains) losses reclassified into earnings, before Tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax Net change, before tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Portion Attributable to Parent Foreign currency, Tax Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax [Abstract] Net increase (decrease) in fair value, Tax Other Comprehensive Income (Loss), Foreign Currency Translation Gain (Loss) Arising During Period, Tax Net realized losses reclassified into earnings, Tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Tax Net change, Tax Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Portion Attributable to Parent Foreign currency, after Tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax [Abstract] Net increase (decrease) in fair value, after Tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Net realized losses reclassified into earnings, after Tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax Net change, after tax Other comprehensive income (loss), net-of-tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Other Comprehensive Income (Loss), before Tax Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Statement of Comprehensive Income [Abstract] Other comprehensive income (loss), net-of-tax: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Net change in available-for-sale debt and marketable equity securities Net change in derivatives Employee benefit plan adjustments Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Common Equity Tier 1 Capital [Abstract] Common Equity Tier 1 Capital [Abstract] Common Equity Tier 1 Capital [Abstract] Ratio Tier One Common Equity to Risk Weighted Assets Tier One Common Equity to Risk Weighted Assets Amount Tier One Common Equity Tier One Common Equity Minimum Required Tier One Risk Based Equity Required For Capital Adequacy To Risk Weighted Assets Tier One Risk Based Equity Required For Capital Adequacy To Risk Weighted Assets Tier 1 Common Capital [Abstract] Tier 1 Common Capital [Abstract] Tier 1 Common Capital [Abstract] Ratio Tier One Common Capital to Risk Weighted Assets Tier One Common Capital to Risk Weighted Assets Amount Tier One Common Capital Tier One Common Capital Tier One Risk Based Capital [Abstract] Tier One Risk Based Capital [Abstract] Ratio Amount Tier One Risk Based Capital Minimum Required Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Capital [Abstract] Capital [Abstract] Ratio Amount Capital Minimum Required Capital Required to be Well Capitalized to Risk Weighted Assets Tier One Leverage Capital [Abstract] Tier One Leverage Capital [Abstract] Ratio Amount Tier One Leverage Capital Minimum Required Risk Weighted Assets Risk Weighted Assets Adjusted Quarterly Average Assets Adjusted Quarterly Average Assets Adjusted Quarterly Average Assets Derivatives Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Employee Benefit Plans Accumulated Defined Benefit Plans Adjustment [Member] Foreign currency Accumulated Translation Adjustment [Member] Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] Beginning balance Net change Ending balance Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Subsidiaries Subsidiaries [Member] Consolidated Entity Excluding Variable Interest Entities (VIE) [Member] Consolidated Entity Excluding Variable Interest Entities (VIE) [Member] 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] Senior structured notes Senior Subordinated Notes [Member] Subordinated notes Subordinated Debt [Member] Advances from Federal Home Loan Banks Federal Home Loan Bank Advances [Member] Securitizations and other BANA VIEs Securitizations [Member] Securitizations [Member] Non-core/non-bank VIEs Non-core/Non-bank Variable Interest Entity [Member] Non-core/Non-bank Variable Interest Entity [Member] Other Other Long-term Debt [Member] Other long-term debt member. Debt Instrument [Line Items] Debt Instrument [Line Items] Long-term Debt, Fiscal Year Maturity [Abstract] Long-term Debt, Fiscal Year Maturity [Abstract] 2015 Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 2016 Long-term Debt, Maturities, Repayments of Principal in Year Two 2017 Long-term Debt, Maturities, Repayments of Principal in Year Three 2018 Long-term Debt, Maturities, Repayments of Principal in Year Four 2019 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Long-term Debt Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [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] Purchased credit card relationships Purchased credit card relationships [Member] Purchased credit card relationships. Core deposit intangibles Core Deposits [Member] Customer relationships Customer Relationships [Member] Affinity relationships Affinity Relationships [Member] Affinity relationships. Other intangibles Other Intangible Assets [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Intangible Assets [Abstract] Finite-Lived Intangible Assets, Net [Abstract] Gross Carrying Value Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Net Carrying Value Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Type of Subsidiary [Axis] Type of Subsidiary [Axis] Type of Subsidiary [Axis] Type of Subsidiary [Domain] Type of Subsidiary [Domain] [Domain] for Type of Subsidiary [Axis] Bank Holding Companies and Related Subsidiaries Bank Holding Companies and Related Subsidiaries [Member] Bank Holding Companies and Related Subsidiaries [Member] Banks and Related Subsidiaries Banks and Related Subsidiaries [Member] Banks and Related Subsidiaries [Member] Nonbank Companies and Related Subsidiaries Nonbank Companies and Related Subsidiaries [Member] Nonbank Companies and Related Subsidiaries [Member] Condensed Balance Sheet Statements, Captions [Line Items] Condensed Balance Sheet Statements, Captions [Line Items] Cash held at bank subsidiaries Securities Receivables from subsidiaries Receivables From Subsidiaries Receivables From Subsidiaries Investments in subsidiaries Investments in Subsidiaries Investments in Subsidiaries Total assets Liabilities and Equity [Abstract] Liabilities and Equity [Abstract] Short-term borrowings Short-term Debt Accrued expenses and other liabilities Payables to subsidiaries Payables to Subsidiaries Payables to Subsidiaries Total liabilities Shareholders’ equity Third party cash held Cash and Cash Equivalents, Held for Third Party Cash and Cash Equivalents, Held for Third Party Earnings (loss) per common share Earnings Per Share, Basic [Abstract] Preferred stock dividends Dividends and undistributed earnings allocated to participating securities Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Net income allocated to common shareholders Net Income (Loss) Allocated to Common Shareholders, Basic This represents net income (loss) applicable to common shareholders (net income (loss) adjusted for preferred stock dividends including dividends declared, accretion of discounts on preferred stock including accelerated accretion when preferred stock is repaid early, and cumulative dividends related to the current dividend period that have not been declared as of period end) less income allocated to participating securities. Average common shares issued and outstanding Earnings (loss) per common share (in dollars per share) Diluted earnings (loss) per common share Earnings Per Share, Diluted [Abstract] Add preferred stock dividends due to assumed conversions Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities Dividends and undistributed earnings allocated to participating securities Participating Securities, Distributed and Undistributed Earnings (Loss), Diluted Net income allocated to common shareholders Net Income (Loss) Available to Common Stockholders, Diluted Dilutive potential common shares Weighted Average Number Diluted Shares Outstanding Adjustment Total diluted average common shares issued and outstanding (in thousands) Diluted earnings (loss) per common share (in dollars per share) Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] U.S. government and agency securities Mortgage servicing rights Servicing Contracts [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] Balance, beginning Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Gains (Losses) in Earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Gains (Losses) 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 Gross Transfers into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Gross Transfers out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Balance, ending Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] Balance, beginning Gains (Losses) in Earnings Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings Gains (Losses) in OCI Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss) Purchases Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Purchases Sales Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Sales Issuances Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Issues Settlements Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements Gross Transfers into Level 3 Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers into Level 3 Gross Transfers out of Level 3 Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers out of Level 3 Balance, ending Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Accrued expenses and other liabilities Accrued Expenses and Other Liabilities [Member] -- None. No documentation exists for this element. -- 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] Balance, beginning Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value Gains (Losses) in Earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Gains (Losses) in OCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss) Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, 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 Gross Transfers into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3 Gross Transfers out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 Balance, ending Transfers between asset classes Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers Between Asset Classes Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers Between Asset Classes Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] First Mortgage First Mortgage [Member] Credit Default Swap Credit Default Swap [Member] Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) Federal Housing Finance Agency (FHFA) Settlement Federal Housing Finance Agency (FHFA) Settlement [Member] Federal Housing Finance Agency (FHFA) Settlement [Member] FGIC Settlement Financial Guaranty Insurance Company (FGIC), Settlement [Member] Financial Guaranty Insurance Company (FGIC) Settlement [Member] MBIA Inc. Settlement MBIA Inc. Settlement [Member] MBIA Inc. Settlement [Member] Syncora Holdings Ltd Settlement Syncora Holdings Ltd Settlement [Member] Syncora Holdings Ltd Settlement [Member] Payments for legal settlements Payments for Legal Settlements Marketable securities received in legal settlement Litigation Settlement, Marketable Securities Received Litigation Settlement, Marketable Securities Received Settlement payment Litigation Settlement, Amount Original principal balance Mortgage Loans on Real Estate, Face Amount of Mortgages Aggregate outstanding principal balance Mortgage Loans on Real Estate, Carrying Amount of Mortgages Unpaid principal balance of unresolved repurchase claims Unresolved Repurchase Claims, Unpaid Principal Balance Unresolved Repurchase Claims, Unpaid Principal Balance Cash paid for repurchases Litigation Settlement, Mortgage Loans Repurchased Litigation Settlement, Mortgage Loans Repurchased Number of trusts involved in settlement agreement Litigation Settlement, Number of Trusts Involved In Settlement Agreement Litigation Settlement, Number of Trusts Involved In Settlement Agreement Fair market value of notes transferred in settlement Litigation Settlement, Fair Market Value of Notes Transferred Litigation Settlement, Fair Market Value of Notes Transferred Percentage of common stock received as warrants in settlement Litigation Settlement, Percentage of Common Stock Received as Warrants Litigation Settlement, Percentage of Common Stock Received as Warrants Exercise price of common stock received as warrants in settlement Litigation Settlement, Exercise Price of Common Stock Received as Warrants Litigation Settlement, Exercise Price of Common Stock Received as Warrants Credit facility borrowing capacity Litigation Settlement, Line of Credit Provided Litigation Settlement, Line of Credit Provided Fair value of derivatives Derivative, Fair Value, Net Number of institutional investors involved in settlement agreement Litigation Settlement, Number Of Institutional Investors In Support Of Settlement Agreement Litigation Settlement, Number Of Institutional Investors In Support Of Settlement Agreement Number of trusts involved in settlement agreement in which parent is not trustee Litigation Settlement, Number of Trusts Involved In Settlement Agreement in which Parent is Not Trustee Litigation Settlement, Number of Trusts Involved In Settlement Agreement in which Parent is Not Trustee Accumulated Other Comprehensive Income (Loss) Comprehensive Income (Loss) Note [Text Block] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] U.S. North America [Member] Asia Asia [Member] Europe, Middle East and Africa EMEA [Member] Latin America and the Caribbean Latin America [Member] Total Non-U.S. Foreign [Member] Foreign Member. China Construction Bank China Construction Bank [Member] Investment in China Construction Bank ("CCB") [Member] Revenues from External Customers and Long-Lived Assets [Line Items] Revenues from External Customers and Long-Lived Assets [Line Items] Total revenue, net of interest expense Income Before Income Taxes Realized gain (loss) on sale of equity method investment Equity Method Investment, Realized Gain (Loss) on Disposal Equity method investment, realized gain (loss) on disposal net of tax Equity Method Investment, Realized Gain (Loss) On Disposal, Net of Tax Equity Method Investment, Realized Gain (Loss) On Disposal, Net of Tax Less than or equal to 90 percent Refreshed Loan To Value Less, Than Or Equal To Ninety Percent [Member] Refreshed Loan To Value Less, Than Or Equal To Ninety Percent Greater than 90 percent but less than or equal to 100 percent Refreshed Loan To Value, Greater Than Ninety Percent But Less Than Or Equal To Hundred Percent [Member] Refreshed Loan To Value, Greater Than Ninety Percent But Less Than Or Equal To Hundred Percent Greater than 100 percent Refreshed Loan To Value, Greater Than Hundred Percent [Member] Refreshed Loan To Value, Greater Than Hundred Percent Core Portfolio Residential Mortgage Legacy Assets & Servicing Residential Mortgage Residential Mortgage PCI Residential Mortgage, Purchase Credit Impaired, Financing Receivable [Member] Residential Mortgage, Purchase Credit Impaired, Financing Receivable [Member] Legacy Assets & Servicing Home Equity Home Equity PCI Home Equity, Purchase Credit Impaired, Financing Receivable [Member] Home Equity, Purchase Credit Impaired, Financing Receivable [Member] Refreshed loan to value high property value threshold Loans and Leases Receivable, Refreshed Loan to Value, High Value Property Value Threshold Loans and Leases Receivable, Refreshed Loan to Value, High Value Property Value Threshold Other Commitments [Table] Other Commitments [Table] Credit Card and Other Consumer Standby letters of credit and financial guarantees Financial Standby Letter of Credit [Member] Letters of credit Letter of Credit [Member] Legally binding commitments Commitments to Extend Credit [Member] Credit card lines Credit Card Lines [Member] Commitment to extend credit for credit cards. Investment grade Internal Investment Grade [Member] Internal Investment Grade [Member] Non-investment grade Internal Noninvestment Grade [Member] Internal Noninvestment Grade [Member] Other Commitments [Line Items] Other Commitments [Line Items] Expire in One Year or Less Credit Extension Commitments, Notional Amount, Expiration in One Year or Less Represents unfunded legally binding commitments, expiring within one year of the balance sheet date. Such commitments consist of the entity committing to lend a specified amount to named borrowers at a certain interest rate, during a certain period and, usually, for a certain purpose. Expire After One Year Through Three Years Credit Extension Commitments, Notional Amount, Expiration After One Year Through Three Years Represents unfunded legally binding commitments, expiring after one year through three years of the balance sheet date. Such commitments consist of the entity committing to lend a specified amount to named borrowers at a certain interest rate, during a certain period and, usually, for a certain purpose. Expire After Three Years Through Five Years Credit Extension Commitments, Notional Amount, Expiration After Three Years Through Five Years Represents unfunded legally binding commitments, expiring after three years through five years of the balance sheet date. Such commitments consist of the entity committing to lend a specified amount to named borrowers at a certain interest rate, during a certain period and, usually, for a certain purpose. Expire After Five Years Credit Extension Commitments, Notional Amount, Expiration After Five Years Represents unfunded legally binding commitments, expiring after five years of the balance sheet date. Such commitments consist of the entity committing to lend a specified amount to named borrowers at a certain interest rate, during a certain period and, usually, for a certain purpose. Notional Amount of Credit Extension Commitments Credit Extension Commitments, Notional Amount Represents unfunded legally binding commitments. Such commitments consist of the entity committing to lend a specified amount to named borrowers at a certain interest rate, during a certain period and, usually, for a certain purpose. Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Schedule of Credit Extension Commitment Expirations Schedule of Credit Extension Commitment Expirations [Table Text Block] Schedule of Credit Extension Commitment Expirations [Table Text Block] Schedule of Defined Benefit Plans Disclosures 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 Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block] Schedule of Benefit Obligations in Excess of Fair Value of Plan Assets Schedule of Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block] Schedule of Net Benefit Costs Schedule of Net Benefit Costs [Table Text Block] Schedule of Pretax Amounts Included in Accumulated OCI Schedule of Amounts Recognized in Accumulated Other Comprehensive Income [Table Text Block] Schedule of Amounts Recognized in Accumulated Other Comprehensive Income [Table Text Block] Schedule of Pretax Amounts Recognized in OCI Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] Schedule of Estimated Pretax Amounts Amortized from Accumulated OCI into Period Cost Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year [Table Text Block] Schedule of Allocation of Plan Assets Schedule of Allocation of Plan Assets [Table Text Block] Schedule of Changes in Fair Value of Plan Assets Schedule of Changes in Fair Value of Plan Assets [Table Text Block] Schedule of Expected Benefit Payments Schedule of Expected Benefit Payments [Table Text Block] Extinguishment of Debt [Axis] Extinguishment of Debt [Axis] Extinguishment of Debt, Type [Domain] Extinguishment of Debt, Type [Domain] Subordinated Debentures Subject to Mandatory Redemption Subordinated Debentures Subject to Mandatory Redemption [Member] Payments for repurchase of trust preferred securities Payments for Repurchase of Trust Preferred Securities Financial instruments subject to mandatory redemption, settlement Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Liquidation Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Liquidation Extinguishment of debt Extinguishment of Debt, Amount Internal Programs Internal Programs [Member] Internal Programs. External Programs External Programs [Member] External Programs. Other Other Program [Member] Other Program Member. Percent expected to be in payment default within 12 months after modification Financing Receivable, Modification, Subsequent Default, Percent Expected to Be in Payment Default Within 12 Months After Modification Financing Receivable, Modification, Subsequent Default, Percent Expected to Be in Payment Default Within 12 Months After Modification Period for payment default after modification Financing Receivable, Period for Payment Default after Modification Financing Receivable, Period for Payment Default after Modification Schedule of Dividends Dividends Declared [Table Text Block] Schedule of Stock by Class Schedule of Stock by Class [Table Text Block] First Lien Mortgages First-Lien Mortgages [Member] A loan to an individual to purchase or refinance residential real estate such as a home, in which the real estate itself serves as collateral for the loan, but consisting of only first-liens. Other Asset-backed Securitizations Collateralized Securities, Other [Member] Other Variable Interest Entities Other Variable Interest Entity Investment Vehicle [Member] Other Variable Interest Entity Investment Vehicle [Member] Mortgage Related Securitizations Schedule of Gain (Loss) on Securitizations or Asset-backed Financing Arrangements of Financial Assets Accounted for as Sale [Table Text Block] Schedule of Variable Interest Entities Schedule of Variable Interest Entities [Table Text Block] Calculation of earnings per common share and diluted earnings per common share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Debt Security [Axis] Debt Security [Axis] Major Types of Debt Securities [Domain] Major Types of Debt Securities [Domain] Resecuritization Trusts Resecuritization Trusts [Member] Resecuritization vehicles. Municipal Bond Trusts Municipal Bonds [Member] Automobile and Other Securitization Trusts Automobile And Other Securitization Trusts [Member] Automobile, student loan and other securitization trusts. Automobile Loan Automobile Loan [Member] Student Loan Student Loan [Member] Student Loan [Member] Other Loan and Receivable Other Loan and Receivable [Member] Other Loan and Receivable [Member] Unconsolidated total assets of VIEs Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets Short-term borrowings Cash proceeds from new securitizations Cash Flows Between Transferor and Transferee, Proceeds from New Transfers Gain (loss) on securitizations Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale, Gain (Loss) on Sale Liquidity commitments to unconsolidated securitization trusts Qualitative and Quantitative Information, Transferor's Continuing Involvement, Liquidity Commitment This represents the Corporation's liquidity commitments to unconsolidated securitization trusts, by asset backed financing arrangements. Weighted average remaining life of bonds held in the trusts in years Qualitative and Quantitative Information, Transferor's Continuing Involvement, Remaining Life of Bonds Held in Trust This represents the weighted-average remaining life of bonds held in municipal bond trusts. Components of net periodic benefit cost 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 Defined Benefit Plan, Amortization of Transition Obligations (Assets) Amortization of prior service cost (credits) Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Amortization of net actuarial loss (gain) Defined Benefit Plan, Amortization of Gains (Losses) Recognized loss due to settlements and curtailments Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments Net periodic benefit cost (income) Defined Benefit Plan, Net Periodic Benefit Cost Weighted-average assumptions used to determine net cost for years ended December 31 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 Rate of compensation increase Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase Predecessor Company Plans Assumed In Mergers Predecessor Company Plans Assumed In Mergers [Member] Predecessor Company Plans Assumed In Mergers [Member] Stock Options (in shares): Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Outstanding at beginning of period Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Outstanding at end of period Options vested and exercisable at end of 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 at beginning of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Forfeited Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Outstanding at end of period Options vested and exercisable at end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value Outstanding, Weighted average remaining contractual term Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Exercisable, weighted average remaining contractual term Long-term Debt Long-term Debt [Text Block] Fair Value, Assets Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table] Fair Value, Assets Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table] Fair Value, Assets Measured on Recurring Basis, Gain (Loss) Included in Earnings Table Other Equity investments Derivative assets Derivative Financial Instruments, Assets [Member] Net derivative assets and other assets Net Derivative Assets and Other Assets [Member] Net Derivative Assets and Other Assets [Member] Trading account liabilities – Corporate securities and other Corporate securities and other [Member] Corporate securities and other. Fair Value, Assets Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] Fair Value, Assets Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] Fair Value, Assets Measured on Recurring Basis, Gain (Loss) Included in Earnings Line Items Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings Level Three Realized And Unrealized Gains Losses Related To Assets Included In Earnings [Abstract] Level three realized and unrealized gains losses related to assets included in earnings. Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities Total Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date Level Three Changes In Unrealized Gains Losses Relating To Assets Still Held At Reporting Date [Abstract] Level 3 changes in unrealized gains losses relating to assets still held at reporting date. Change in unrealized Gains (losses) relating to assets still held at reporting date Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss) Change in Unrealized Gains (losses) relating to liabilities still held at reporting date Fair Value, Liabilities Measured on Recurring Basis, Change in Unrealized Gain (Loss) Total Fair Value, Assets, Liabilites and Net Derivative Asset (Liability), Measured on Recurring Basis, Change in Unrealized Gain (Loss) This represents the total changes in unrealized gains (losses) recorded in noninterest income, for Level 3 assets and liabilities, measured on a recurring basis. Impairment Type [Axis] Impairment Type [Axis] Impairment type. Impairment Type [Domain] Impairment Type [Domain] Impairment type. Temporarily impaired AFS debt securities Temporarily Impaired [Member] Temporarily impaired. Other-than-temporarily impaired AFS debt securities Other Than Temporarily Impaired [Member] Other than temporarily impaired. Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] Less than Twelve Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Less than Twelve Months, Gross Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Twelve Months or Longer, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Twelve Months or Longer, Gross Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Total, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Total, Gross Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Bank of America, N.A. Additional collateral required to be posted upon downgrade, one incremental notch Additional Collateral, Effect of Downgrade by One Incremental Notch, Aggregate Fair Value Additional Collateral, Effect of Downgrade by One Incremental Notch, Aggregate Fair Value Additional collateral required to be posted upon downgrade, second incremental notch Additional Collateral, Effect of Downgrade by Second Incremental Notch, Aggregate Fair Value Additional Collateral, Effect of Downgrade by Second Incremental Notch, Aggregate Fair Value Derivative liability subject to unilateral termination upon downgrade, one incremental notch Derivative, Net Liability Position, Effect of Downgrade by One Incremental Notch, Aggregate Fair Value, Including Triggering Circumstance Derivative, Net Liability Position, Effect of Downgrade by One Incremental Notch, Aggregate Fair Value, Including Triggering Circumstance Derivative liability subject to unilateral termination upon downgrade, second incremental notch Derivative, Net Liability Position, Effect of Downgrade by Second Incremental Notch, Aggregate Fair Value, Including Triggering Circumstance Derivative, Net Liability Position, Effect of Downgrade by Second Incremental Notch, Aggregate Fair Value, Including Triggering Circumstance Collateral posted subject to unilateral termination upon downgrade, one incremental notch Collateral Posted, Effect of Downgrade by One Incremental Notch, Aggregate Fair Value, Including Triggering Circumstances Collateral Posted, Effect of Downgrade by One Incremental Notch, Aggregate Fair Value, Including Triggering Circumstances Collateral posted subject to unilateral termination upon downgrade, second incremental notch Collateral Posted, Effect of Downgrade by Second Incremental Notch, Aggregate Fair Value, Including Triggering Circumstance Collateral Posted, Effect of Downgrade by Second Incremental Notch, Aggregate Fair Value, Including Triggering Circumstance Schedule of Credit Derivatives [Table] Schedule of Credit Derivatives [Table] Credit Derivatives [Line Items] Credit Derivatives [Line Items] Carrying Value of Derivatives [Abstract] Carrying Value of Derivatives [Abstract] Carrying Value of Derivatives [Abstract] Less than One Year Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement, Expiration Less Than One Year Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement, Expiration Less Than One Year One to Three Years Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement, Expiration From One to Three Years Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement, Expiration From One to Three Years Three to Five Years Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement, Expiration From Three To Five Years Derivative Liability, Fair Value, Gross Liability Not Subject to Master Netting Arrangement, Expiration From Three To Five Years Over Five Years Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement, Expiration Greater Than Five Years Derivative Liability, Fair Value, Gross Liability Not Subject to Master Netting Arrangement, Expiration Greater Than Five Years Total Carrying Value of Credit-Related Notes [Abstract] Carrying Value of Credit-Related Notes [Abstract] Carrying Value of Credit-Related Notes [Abstract] Less than One Year Credit Derivative, Maximum Exposure, Less Than One Year Credit Derivative, Maximum Exposure, Less Than One Year One to Three Years Credit Derivative, Maximum Exposure, One to Three Years Credit Derivative, Maximum Exposure, One to Three Years Three to Five Years Credit Derivative, Maximum Exposure, Three To Five Years Credit Derivative, Maximum Exposure, Three To Five Years Over Five Years Credit Derivative, Maximum Exposure, Greater Than Five Years Credit Derivative, Maximum Exposure, Greater Than Five Years Total Credit Derivative, Maximum Exposure, Undiscounted Less than One Year Derivative Liability, Notional Amount, Expiration Less Than One Year Derivative Liability, Notional Amount, Expiration Less Than One Year One to Three Years Derivative Liability, Notional Amount, Expiration From One to Three Years Derivative Liability, Notional Amount, Expiration From One to Three Years Three to Five Years Derivative Liability, Notional Amount, Expiration From Three to Five Years Derivative Liability, Notional Amount, Expiration From Three to Five Years Over Five Years Derivative Liability, Notional Amount, Greater Than Five Years Derivative Liability, Notional Amount, Greater Than Five Years Total Money market and interest-bearing cash Money Market And Interest Bearing Cash [Member] Money market and interest-bearing cash. Cash and cash equivalent commingled/mutual funds Cash and Cash Equivalent Commingled/Mutual Funds [Member] Cash and Cash Equivalent Commingled/Mutual Funds [Member] Corporate debt securities Corporate Debt Securities [Member] Non-U.S. debt securities Fixed income commingled/mutual funds Fixed Income Commingled/Mutual Funds [Member] Fixed Income Commingled/Mutual Funds [Member] Common and preferred equity securities Common and Preferred Equity Securities [Member] Common and preferred stocks. Equity commingled/mutual funds Equity Commingled/Mutual Funds [Member] Equity Commingled/Mutual Funds [Member] Public real estate investment trusts Public Real Estate Investment Trusts [Member] Public real estate investment trusts. Private real estate Private Real Estate [Member] Private real estate. Real estate commingled/mutual funds Real Estate Commingled/Mutual Funds [Member] Real Estate Commingled/Mutual Funds [Member] Limited partnerships Limited Partnerships [Member] Limited partnerships. Other investments Other Investments [Member] Interest Rate Swap Interest Rate Swap [Member] Participant Loans Participant Loans [Member] Participant Loans [Member] Commodity and Balanced Funds Commodity and Balanced Funds [Member] Commodity and Balanced Funds [Member] Other Various Investments Other Various Investments [Member] Other Various Investments [Member] Fair value of plan assets Defined Benefit Plan, Fair Value of Plan Assets Renegotiated TDRs Financing Receivable, Modifications, Recorded Investment Percent of balances current or less than 30 days past due Financing Receivable, Modifications, Recorded Investment, Percent of Balance Current or Less Than Thirty Days Past Due Represents the percentage of balances current or less than thirty days past due in total renegotiated TDR loans. Other assets Defined Benefit Plan, Assets for Plan Benefits Accrued expenses and other liabilities Pension and Other Postretirement Defined Benefit Plans, Liabilities Net amount recognized at December 31 Defined Benefit Plan, Amounts Recognized in Balance Sheet Valuation adjustments on derivative assets, gross Credit Valuation Gain (Loss) on Derivative Asset, Gross Counterparty credit risk valuation adjustments on derivative assets recorded to properly reflect the credit quality of the counterparty. Adjustments are necessary as the market quotes on derivatives do not fully reflect the credit risk of the counterparties to the derivative assets. Valuation adjustments on derivative assets, net Credit Valuation Gain (Loss) on Derivative Asset, Net Credit valuation gains (losses), net of hedges, recognized in trading account profits for counterparty credit risk. Funding valuation adjustment on derivative asset, gross Funding Valuation Gain (Loss) on Derivative Asset, Gross Funding Valuation Gain (Loss) on Derivative Asset, Gross Funding valuation adjustment on derivative asset, net Funding Valuation Gain (Loss) on Derivative Asset, Net Funding Valuation Gain (Loss) on Derivative Asset, Net Valuation adjustments on derivative liabilities, gross Debit Valuation Gain (Loss), on Derivative Liability, Gross The impact of the Corporation's own credit quality on the fair value of derivative liabilities. Credit valuation gains (losses) are recognized in trading account profits (losses). Valuation adjustments on derivative liabilities, net Debit Valuation Gain (Loss) on Derivative Liability, Net Debit Valuation Gain (Loss), Net Funding valuation adjustment on derivative liabilities, gross Funding Valuation Gain (Loss), on Derivative Liability, Gross Funding Valuation Gain (Loss), on Derivative Liability, Gross Funding valuation adjustment on derivative liabilities, net Funding Valuation Gain (Loss) on Derivative Liability, Net Funding Valuation Gain (Loss) on Derivative Liability, Net Cumulative credit valuation adjustment Derivative Credit Risk Valuation Adjustment, Derivative Assets Cumulative funding valuation adjustment Derivative Funding Risk Valuation Adjustment, Derivative Assets Derivative Funding Risk Valuation Adjustment, Derivative Assets Cumulative debit valuation adjustment Derivative Credit Risk Valuation Adjustment, Derivative Liabilities Trading Activities, Gain and Losses, by Type, by Income Statement Location [Table] Trading Activities, Gain and Losses, by Type, by Income Statement Location [Table] Trading Securities Trading Derivatives [Member] Trading Derivatives [Member] Trading Activity, by Type [Axis] Trading Activity [Axis] Trading Activity, by Type [Domain] Trading Activity, by Type [Domain] Interest rate risk Income Interest Rate [Member] Trading in a derivative or nonderivative instrument that provides a return in the form of periodic payments of interest and eventual return of principal at maturity. Foreign exchange risk Foreign Exchange [Member] Equity risk Equity [Member] Credit risk Credit [Member] Other risk Other Trading [Member] Trading Account Profits Net Interest Income Interest Income (Expense) [Member] Interest Income (Expense) Other Operating Income (Loss) and Brokerage Commissions and Asset Management Fee Revenue [Member] Operating Income (Loss) and Brokerage Commissions and Asset Management Fee Revenue [Member] Brokerage commissions and asset management fee revenue Brokerage Commissions And Asset Management Fee Revenue [Member] Brokerage Commissions And Asset Management Fee Revenue [Member] Trading Activity, Gains and Losses, Net [Line Items] Trading Activity, Gains and Losses, Net [Line Items] Sales and Trading Revenue U.S. Time Deposit Maturities, Domestic [Abstract] Time Deposit Maturities, Domestic [Abstract] Due in 2015 Time Deposit Maturities, Domestic, Next Twelve Months Time Deposit Maturities, Domestic, Next Twelve Months Due in 2016 Time Deposit Maturities, Domestic, Year Two Time Deposit Maturities, Domestic, Year Two Due in 2017 Time Deposit Maturities, Domestic, Year Three Time Deposit Maturities, Domestic, Year Three Due in 2018 Time Deposit Maturities, Domestic, Year Four Time Deposit Maturities, Domestic, Year Four Due in 2019 Time Deposit Maturities, Domestic, Year Five Time Deposit Maturities, Domestic, Year Five Thereafter Time Deposit Maturities, Domestic, after Year Five Time Deposit Maturities, Domestic, after Year Five Total time deposits Time Deposits, Domestic Time Deposits, Domestic Non-U.S. Time Deposit Maturities, Foreign [Abstract] Time Deposit Maturities, Foreign [Abstract] Due in 2015 Time Deposit Maturities, Foreign, Next Twelve Months Time Deposit Maturities, Foreign, Next Twelve Months Due in 2016 Time Deposit Maturities, Foreign, Year Two Time Deposit Maturities, Foreign, Year Two Due in 2017 Time Deposit Maturities, Foreign, Year Three Time Deposit Maturities, Foreign, Year Three Due in 2018 Time Deposit Maturities, Foreign, Year Four Time Deposit Maturities, Foreign, Year Four Due in 2019 Time Deposit Maturities, Foreign, Year Five Time Deposit Maturities, Foreign, Year Five Thereafter Time Deposit Maturities, Foreign, after Year Five Time Deposit Maturities, Foreign, after Year Five Total time deposits Time Deposits, Foreign Time Deposits, Foreign Total Time Deposits, Fiscal Year Maturity [Abstract] Due in 2015 Time Deposit Maturities, Next Twelve Months Due in 2016 Time Deposit Maturities, Year Two Due in 2017 Time Deposit Maturities, Year Three Due in 2018 Time Deposit Maturities, Year Four Due in 2019 Time Deposit Maturities, Year Five Thereafter Time Deposit Maturities, after Year Five Time Deposits Time Deposits Stock-based Compensation Plans Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Schedule of Share-based Compensation, Stock Options, Activity Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Derivatives Derivative Instruments and Hedging Activities Disclosure [Text Block] Representations and Warranties Obligations and Corporate Guarantees Representations and Warranties Obligations and Corporate Guarantees [Member] Representations and Warranties Obligations and Corporate Guarantees [Member] Accrued Liabilities And Other Liabilities Accrued Liabilities And Other Liabilities [Member] Accrued Liabilities And Other Liabilities [Member] Provision for Loan Lease and Other Losses Provision for Loan Lease and Other Losses [Member] Provision for Loan Lease and Other Losses [Member] Loss Contingency Accrual [Roll Forward] Loss Contingency Accrual [Roll Forward] Liability for representations and warranties and corporate guarantees, January 1 Additions for new sales Loss Contingency Accrual, Additions Loss Contingency Accrual, Additions Net reductions Loss Contingency Accrual, Payments Liability for representations and warranties and corporate guarantees, December 31 Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] Debt Maturities, Amortized Cost Basis, Rolling Maturity [Abstract] Debt Securities Carried at Fair Value, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] Due in One Year or Less, Amount Debt Maturities, Next Rolling Twelve Months, Amortized Cost Basis Debt Securities Carried at Fair Value, Debt Maturities, Within One Year, Amortized Cost Basis Due in One Year or Less, Yield Debt Maturities, Next Rolling Twelve Months, Amortized Cost Basis, Average Yield Debt Securities Carried at Fair Value Debt Maturities, Yield, Within One Year Due after One Year through Five Years, Amount Debt Maturities, Rolling Year Two Through Five, Amortized Cost Basis Debt Securities Carried at Fair Value, Debt Maturities, after One Through Five years, Amortized Cost Basis Due after One Year through Five Years, Yield Debt Maturities, Rolling Year Two Through Five, Amortized Cost Basis, Average Yield Debt Securities Carried at Fair Value, Debt Maturities, Yield, after One Through Five Years Due after Five Years though Ten Years, Amount Debt Maturities, Rolling Year Six Through Ten, Amortized Cost Basis Debt Securities Carried at Fair Value, Debt Maturities, after Five Through Ten years, Amortized Cost Basis Due after Five Years though Ten Years, Yield Debt Maturities, Rolling Year Six Through Ten, Amortized Cost Basis, Average Yield Debt Securities Carried at Fair Value, Debt Maturities, Yield, after Five Through Ten Years Due after Ten Years, Amount Debt Maturities, Rolling after Year Ten, Amortized Cost Basis Debt Securities Carried at Fair Value, Debt Maturities, after Ten Years, Amortized Cost Basis Due after Ten Years, Yield Debt Maturities, Rolling after Year Ten, Amortized Cost Basis, Average Yield Debt Securities Carried at Fair Value, Debt Maturities, Yield, after Ten Years Total, Amount Debt Securities Carried at Fair Value, Amortized Cost Basis Debt Securties Carried at Fair Value, Debt Maturities, Amortized Cost Basis Total, Yield Debt Securities Carried At Fair Value Amortized Cost Average Yield Debt Securities Carried at Fair Value, Debt Maturities, Yield Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract] Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract] Due in One Year or Less, Amount Held-to-maturity Securities, Debt Maturities, Next Rolling Twelve Months, Net Carrying Amount Held-to-maturity Securities, Debt Maturities, Next Rolling Twelve Months, Net Carrying Amount Due in One Year or Less, Yield Held-to-maturity Securities, Debt Maturities, Next Rolling Twelve Months, Net Carrying Amount, Average Yield Held-to-maturity Securities, Debt Maturities, Next Rolling Twelve Months, Net Carrying Amount, Average Yield Due after One Year through Five Years, Amount Held-to-maturity Securities, Debt Maturities, Rolling Year Two Through Five, Net Carrying Amount Held-to-maturity Securities, Debt Maturities, Rolling Year Two Through Five, Net Carrying Amount Due after One Year through Five Years, Yield Held-to-maturity Securities, Debt Maturities, Rolling Year Two Through Five, Net Carrying Amount, Average Yield Held-to-maturity Securities, Debt Maturities, Rolling Year Two Through Five, Net Carrying Amount, Average Yield Due after Five Years through Ten Years, Amount Held-to-maturity Securities, Debt Maturities, Rolling Year Six Through Ten, Net Carrying Amount Held-to-maturity Securities, Debt Maturities, Rolling Year Six Through Ten, Net Carrying Amount Due after Five Years though Ten Years, Yield Held-to-maturity Securities, Debt Maturities, Rolling Year Six Through Ten, Net Carrying Amount, Average Yield Held-to-maturity Securities, Debt Maturities, Rolling Year Six Through Ten, Net Carrying Amount, Average Yield Due after Ten Years, Amount Held-to-maturity Securities, Debt Maturities, Rolling after Ten Years, Net Carrying Amount Held-to-maturity Securities, Debt Maturities, Rolling after Ten Years, Net Carrying Amount Due after Ten Years, Yield Held-to-maturity Securities, Debt Maturities, Rolling After Ten Years, Net Carrying Amount, Average Yield Held-to-maturity Securities, Debt Maturities, Rolling After Ten Years, Net Carrying Amount, Average Yield Total, Yield Held-to-maturity Securities, Average Yield This item represents the total of all debt securities grouped by maturity dates, yield percent, which are categorized as held-to-maturity. Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] Debt Maturities, Fair Value, Rolling Maturity [Abstract] Debt Securities Carried at Fair Value, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] Due in One Year or Less, Amount Debt Maturities, Next Rolling Twelve Months, Fair Value Debt Securities Carried at Fair Value, Debt Maturities, Within One Year, Fair Value Due after One Year through Five Years, Amount Debt Maturities, Rolling Year Two Through Five, Fair Value Debt Securities Carried at Fair Value, Debt Maturities, after One Through Five years, Fair Value Due after Five Years though Ten Years, Amount Debt Maturities, Rolling Year Six Through Ten, Fair Value Debt Securities Carried at Fair Value, Debt Maturities, after Five Through Ten Years, Fair Value Due after Ten Years, Amount Debt Maturities, Rolling after Year Ten, Fair Value Debt Securities Carried at Fair Value, Debt Maturities, after Ten Years, Fair Value Debt Securities Carried at Fair Value Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract] Held-to-maturity Securities, Debt Maturities, Fair Value, Rolling Maturity [Abstract] Due in One Year or Less, Amount Held-to-maturity Securities, Debt Maturities, Next Rolling Twelve Months, Fair Value Due after One Year through Five Years, Amount Held-to-maturity Securities, Debt Maturities, Rolling Year Two Through Five, Fair Value Due after Five Years though Ten Years, Amount Held-to-maturity Securities, Debt Maturities, Rolling Year Six Through Ten, Fair Value Due after Ten Years, Amount Held-to-maturity Securities, Debt Maturities, Rolling after Ten Years, Fair Value Held-to-maturity Securities, Fair Value Long Term Debt, Excluding Senior Structured Notes Long Term Debt, Excluding Senior Structured Notes [Member] Long Term Debt, Excluding Senior Structured Notes [Member] Fixed Rate Debt Fixed Rate Debt [Member] Fixed Rate Debt [Member] Floating Rate Debt Floating Rate Debt [Member] Floating Rate Debt [Member] Subordinated Debt and Senior Notes Subordinated Debt and Senior Notes [Member] Subordinated Debt and Senior Notes [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Foreign Currency - Dominated Debt Foreign Currency - Dominated Debt [Member] Foreign Currency - Dominated Debt [Member] Other Asset-backed Securitizations Other Variable Interest Entities [Member] Other Variable Interest Entities [Member] Long-term debt, weighted average interest rate Long-term Debt, Weighted Average Interest Rate Repayments of long-term debt Gains (losses) on extinguishment of debt Gains (Losses) on Extinguishment of Debt Change in fair value of plan assets Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Fair value, January 1 Actual return on plan assets Defined Benefit Plan, Actual Return on Plan Assets Company contributions Defined Benefit Plan, Contributions by Employer Plan participant contributions Defined Benefit Plan, Contributions by Plan Participants Settlements and curtailments Defined Benefit Plan, Settlements and Curtailments, Plan Assets Defined Benefit Plan, Settlements and Curtailments, Plan Assets Benefits paid Defined Benefit Plan, Benefits Paid Federal subsidy on benefits paid Defined Benefit Plan, Gross Prescription Drug Subsidy Receipts Received Foreign currency exchange rate changes Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets Fair value, December 31 Change in projected benefit obligation Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Projected benefit obligation, January 1 Defined Benefit Plan, Benefit Obligation Plan participant contributions Settlements and curtailments Defined Benefit Plan, Curtailments and Settlements, Benefit Obligation Defined Benefit Plan, Curtailments and Settlements, Benefit Obligation Actuarial loss (gain) Defined Benefit Plan, Actuarial Gain (Loss) Benefits paid Federal subsidy on benefits paid Foreign currency exchange rate changes Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss) Projected benefit obligation, December 31 Amount recognized, December 31 Defined Benefit Plan, Funded Status of Plan Funded status, December 31 Defined Benefit Plan, Funded Status of Plan [Abstract] Accumulated benefit obligation Defined Benefit Plan, Accumulated Benefit Obligation Overfunded (unfunded) status of ABO Defined Benefit Plan, Funded Status of Plan Excluding Provision for Future Salaries This indicates the amount of overfunded or unfunded status of accumulated benefit obligation. Provision for future salaries Defined Benefit Plan, Provision For Future Salaries This represents the amount of provision for future salaries. Projected benefit obligation Weighted-average assumptions, December 31 Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract] Discount rate Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Rate of compensation increase Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase Net actuarial loss (gain) Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Gains (Losses), before Tax Prior service cost (credits) Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax Amounts recognized in accumulated OCI Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax Senior structured notes Junior subordinated notes (related to trust preferred securities) Nonbank VIEs Non-Bank Variable Interest Entities [Member] Non-Bank Variable Interest Entities [Member] Fixed, with a weighted-average rate of 4.67%, ranging from 1.25% to 8.83%, due 2015 to 2044 Bank of America Corporation, Senior Notes, Fixed [Member] Bank of America Corporation, Senior Notes, Fixed [Member] Floating, with a weighted-average rate of 1.32%, ranging from 0.09% to 4.98%, due 2015 to 2044 Bank of America Corporation, Senior Notes, Floating [Member] Bank of America Corporation, Senior Notes, Floating [Member] Fixed, with a weighted-average rate of 4.91%, ranging from 0.80% to 10.20%, due 2015 to 2038 Bank of America Corporation, Subordinated Notes, Fixed [Member] Bank of America Corporation, Subordinated Notes, Fixed [Member] Floating, with a weighted-average rate of 0.97%, ranging from 0.01% to 3.16%, due 2016 to 2026 Bank of America Corporation, Subordinated Notes, Floating [Member] Bank of America Corporation, Subordinated Notes, Floating [Member] Fixed, with a weighted-average rate of 6.78%, ranging from 5.25% to 8.05%, due 2027 to perpetual Bank of America Corporation, Junior Subordinated Notes, Fixed [Member] Bank of America Corporation, Junior Subordinated Notes, Fixed [Member] Floating, with a weighted-average rate of 0.92%, ranging from 0.78% to 1.24%, due 2027 to 2056 Bank of America Corporation, Junior Subordinated Notes, Floating [Member] Bank of America Corporation, Junior Subordinated Notes, Floating [Member] Fixed, with a weighted-average rate of 1.98%, ranging from 0.08% to 7.72%, due 2015 to 2187 Bank of America, N.A., Senior Notes, Fixed [Member] Bank of America, N.A., Senior Notes, Fixed [Member] Floating, with a weighted-average rate of 0.60%, ranging from 0.36% to 0.70%, due 2015 to 2041 Bank of America, N.A., Senior Notes, Floating [Member] Bank of America, N.A., Senior Notes, Floating [Member] Fixed, with a weighted-average rate of 5.68%, ranging from 5.30% to 6.10%, due 2016 to 2036 Bank of America, N.A., Subordinated Notes, Fixed [Member] Bank of America, N.A., Subordinated Notes, Fixed [Member] Floating, with a weighted-average rate of 0.53%, ranging from 0.26% to 0.54%, due 2016 to 2019 Bank of America, N.A., Subordinated Notes, Floating [Member] Bank of America, N.A., Subordinated Notes, Floating [Member] Fixed, with a weighted-average rate of 5.34%, ranging from 0.01% to 7.72%, due 2015 to 2034 Bank of America, N.A., Advances from Federal Home Loan Banks, Fixed [Member] Bank of America, N.A., Advances from Federal Home Loan Banks, Fixed [Member] Floating, with a weighted-average rate of 0.26%, ranging from 0.24% to 0.30%, due 2015 to 2016 Bank of America, N.A., Advances from Federal Home Loan Banks, Floating [Member] Bank of America, N.A., Advances from Federal Home Loan Banks, Floating [Member] Fixed, with a rate of 5.50%, due 2017 to 2021 Other Debt, Senior Notes, Fixed [Member] Other Debt, Senior Notes, Fixed [Member] Floating, with a rate of 1.88%, due 2015 Other Debt, Senior Notes, Floating [Member] Other Debt, Senior Notes, Floating [Member] Fixed, with a weighted-average rate of 7.14%, ranging from 7.00% to 7.28%, perpetual Other Debt, Junior Subordinated Notes, Fixed [Member] Other Debt, Junior Subordinated Notes, Fixed [Member] Floating, with a rate of 0.86%, due 2027 Other Debt, Junior Subordinated Notes, Floating [Member] Other Debt, Junior Subordinated Notes, Floating [Member] Retained Earnings Incremental common shares attributable to dilutive effect of conversion of preferred stock Incremental Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock Incremental common shares attributable to dilutive effect of call options and warrants Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants Noncash dividends Dividends, Preferred Stock, Stock Redemption of preferred stock Federal Funds Sold, Securities Borrowed or Purchased Under Agreements to Resell and Short-term Borrowings [Abstract] Federal Funds Sold, Securities Borrowed or Purchased Under Agreements to Resell and Short-term Borrowings [Abstract] Federal Funds Sold Securities Borrowed Or Purchased Under Agreements To Resell And Short Term Borrowings Federal Funds Sold Securities Borrowed Or Purchased Under Agreements To Resell And Short Term Borrowings [Table Text Block] Federal Funds Sold, Securities Borrowed or Purchased Under Agreements to Resell and Short-term Borrowings. Offsetting Liabilities [Table] Offsetting Liabilities [Table] Securities Borrowed and Securities Purchased Under Agreements to Resell Securities Borrowed and Securities Purchased Under Agreements to Resell [Member] Securities Borrowed and Securities Purchased Under Agreements to Resell [Member] Securities Loaned and Financial Assets Sold Under Agreements to Repurchase Securities Loaned and Financial Assets Sold Under Agreements to Repurchase [Member] Securities Loaned and Financial Assets Sold Under Agreements to Repurchase [Member] Offsetting Liabilities [Line Items] Offsetting Liabilities [Line Items] Offsetting Liabilities Offsetting Liabilities [Table Text Block] Offsetting Assets [Table] Offsetting Assets [Table] Offsetting Assets [Line Items] Offsetting Assets [Line Items] Offsetting Assets Offsetting Assets [Table Text Block] Purchased credit card and Affinity relationships Purchased Credit Card and Affinity Relationships [Member] Purchased Credit Card and Affinity Relationships [Member] Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] 2015 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2016 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2017 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2018 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Five Schedule of Components of Income Tax Expense (Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Reconciliation of Change in Unrecognized Tax Benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Summary of Income Tax Examinations Summary of Income Tax Examinations [Table Text Block] Schedule of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Deferred Tax Assets And Related Valuation Allowances Recognized For Net Operating And Other Loss Carryforwards And Tax Credit Carryforwards Summary of Operating Loss Carryforwards [Table Text Block] Summary of Tax Credit Carryforwards Summary of Tax Credit Carryforwards [Table Text Block] Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] Derivative Derivative [Member] Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Cash Flow and Net Investment Hedges Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Other Risk Management Derivatives Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Schedule of Derivative Instruments Included in Trading Activities Schedule of Derivative Instruments Included in Trading Activities [Table Text Block] Disclosure of Credit Derivatives Disclosure of Credit Derivatives [Table Text Block] Additional Collateral required to be posted upon downgrade Schedule of Additional Collateral Required Upon Downgrade [Table Text Block] Schedule of Additional Collateral Required Upon Downgrade Derivative Liability subject to unilateral termination upon downgrade Schedule of Derivative Liabilities Subject to Unilateral Termination Upon Downgrade [Table Text Block] Schedule of Derivative Liabilities Subject to Unilateral Termination Upon Downgrade Valuation Adjustments on Derivatives Valuation Adjustments on Derivatives [Table Text Block] [Table Text Block] for Valuation Adjustments on Derivatives [Table] Assets and Liabilities Carried at Fair Value on a Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table Text Block] Level 3 Changes in Unrealized Gains (Losses) Relating to Assets and Liabilities Still Held at Reporting Date Fair Value, Measured On Recurring Basis Change In Unrealized Gain Loss [Table Text Block] Level 3 Changes in Unrealized Gains (Losses) Relating to Assets and Liabilities Still Held at Reporting Date. Fair Value Inputs, Assets, Quantitative Information Fair Value Inputs, Assets, Quantitative Information [Table Text Block] Fair Value Inputs, Liabilities, Quantitative Information Fair Value Inputs, Liabilities, Quantitative Information [Table Text Block] Assets and Liabilities Measured at Fair Value on Nonrecurring Basis Fair Value Measurements, Nonrecurring [Table Text Block] Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block] Marketable Securities Marketable Securities [Table Text Block] Schedule of Other Debt Securities Carried at Fair Value Schedule of Other Debt Securities Carried at Fair Value [Table Text Block] Schedule of Other Debt Securities Carried at Fair Value [Table Text Block] Components of Realized Gains and Losses on Sales of Debt Securities Schedule of Realized Gain (Loss) [Table Text Block] Current Fair Value and Associated Gross Unrealized Losses on Investments Debt Securities Exceeding 10 Percent Stockholders' Equity [Table Text Block] Debt Securities Exceeding 10 Percent Stockholders' Equity [Table Text Block] Amortized Cost and Fair Value of Corporations Investment Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block] Corporation Recorded Other-than-Temporary Impairment Losses on AFS Debt Securities Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table Text Block] Significant Assumptions Used in the Valuation of Non-Agency Residential MBS Schedule of Other Than Temporary Impairment Losses, Qualitative Assumptions [Table Text Block] Schedule of Other Than Temporary Impairment Losses, Qualitative Assumptions Expected Maturity Distribution Investments Classified by Contractual Maturity Date [Table Text Block] Representations and Warranties Exposure Representations and Warranties Exposure [Member] Representations and Warranties Exposure [Member] Timetable to reach a settlement once a breach of representations and warranties is confirmed Representations and Warranties, Settlement Period After Breach This represents the timetable in days generally that it takes to reach a settlement where a breach of representations and warranties has been confirmed. Inactive claims, threshold period of inactivity after denial Representations and Warranties, Inactive Status, Absence of Communication, Period Time period after which claims that have been denied, and no further communication has been received, are considered inactive. Unresolved repurchase claims, net of duplicate claims, in which statute of limitations has expired Unresolved Repurchase Claims, Net of Duplicate Claims, Amount in which Statute of Limitations has Expired Unresolved Repurchase Claims, Net of Duplicate Claims, Amount in which Statute of Limitations has Expired Number of open rescission notices Mortgage Insurance, Number of Open Rescission Notices Mortgage Insurance, Number of Open Rescission Notices Number of open mortgage insurance rescission notices Number of Open Mortgage Insurance Rescission Notices Number of Open Mortgage Insurance Rescission Notices Number of open rescission notices pertaining to first-lien mortgages Mortgage Insurance, Number of Open Rescission Notices, First-Lien Mortgages Mortgage Insurance, Number of Open Rescission Notices, First-Lien Mortgages Number of open rescission notices pertaining to ongoing litigations for second lien mortgages Mortgage Insurance, Number of Open Rescission Notices, Ongoing Litigation For Second Lien Mortgages Mortgage Insurance, Number of Open Rescission Notices, Ongoing Litigation For Second Lien Mortgages Maximum estimated range of possible loss Loss Contingency, Range of Possible Loss, Maximum Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] 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 Reclassification out of Accumulated Other Comprehensive Income [Member] Accumulated Net Unrealized Investment Gain (Loss) Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges Prior service cost Accumulated Defined Benefit Plans Adjustment, Net Prior Service Cost (Credit) [Member] Transition obligation Accumulated Defined Benefit Plans Adjustment, Net Transition Asset (Obligation) [Member] Net actuarial losses Accumulated Defined Benefit Plans Adjustments, Net Actuarial Losses [Member] Accumulated Defined Benefit Plans Adjustments, Net Actuarial Losses [Member] Settlements and curtailments Accumulated Defined Benefit Plans Adjustments, Settlements and Curtailments [Member] Accumulated Defined Benefit Plans Adjustments, Settlements and Curtailments [Member] Accumulated Defined Benefit Plans Adjustment Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Net interest income Trading account profits Other income (loss) Personnel Equity investment income Securities held as collateral, fair value Securities Held as Collateral, at Fair Value Securities received as collateral, amount re-pledged and sold Securities Received as Collateral, Amount Repledged and Sold Preferred Stock Exchanges [Table] Preferred Stock Exchanges [Table] Preferred Stock Exchanges [Table] Series B Preferred Stock Series B 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 I Preferred Stock Series I Preferred Stock [Member] Series I Preferred Stock Member. Series K Preferred Stock Series K Preferred Stock [Member] Series K Preferred Stock member. Series M Preferred Stock Series M Preferred Stock [Member] Series M Preferred Stock member. Series 2 Preferred Stock Series 2 Preferred Stock [Member] Series Two Preferred Stock member. Series 3 Preferred Stock Series 3 Preferred Stock [Member] Series Three Preferred Stock member. Series 4 Preferred Stock Series 4 Preferred Stock [Member] Series Four Preferred Stock member. Series 5 Preferred Stock Series 5 Preferred Stock [Member] Series Five Preferred Stock member. Total Shares Outstanding Preferred Stock, Shares Outstanding Liquidation Preference per Share (in dollars) Carrying Value Preferred Stock, Redeemable and NonRedeemable, Value, Before Adjustments Preferred Stock, Redeemable and NonRedeemable, Value, Before Adjustments Basis spread on variable rate for dividend rate Preferred Stock, Dividend Rate, Basis Spread on Variable Rate Preferred Stock, Dividend Rate, Basis Spread on Variable Rate Adjustment to preferred stock Preferred Stock, Redeemable and NonRedeemable, Value, Adjustments Preferred Stock, Redeemable and NonRedeemable, Value, Adjustments Minimum interest rate per annum Preferred Stock, Dividend Rate. Basis Spread on Variable Rate, Minimum Rate per Annum Preferred Stock, Dividend Rate. Basis Spread on Variable Rate, Minimum Rate per Annum Shareholders' Equity Stockholders' Equity Note Disclosure [Text Block] Loss Contingencies by Nature of Contingency [Axis] Obligation to Repurchase Receivables Sold Obligation to Repurchase Receivables Sold [Member] Indemnification Agreement Indemnification Agreement [Member] Unpaid Principal Balance Loss Contingency, Unpaid Principal Balance Represents the unpaid principal balance of loan guarantees for which the reporting entity repurchased and paid indemnification claims for during the period. Cash Paid for Repurchases Loss Loss Contingency, Loss in Period Securitizations and Other Variable Interest Entities Variable Interest Entity Disclosure [Text Block] Loans and Leases Receivable, Allowance [Abstract] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Small Business Commercial Loan Small Business Commercial Loan [Member] Small Business Commercial Loan [Member] Home Loans Commercial Geographical [Domain] Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Impaired loans and troubled debt restructurings Financing Receivable, Individually Evaluated for Impairment [Abstract] Financing Receivable, Individually Evaluated for Impairment [Abstract] Allowance for loan and lease losses Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Carrying value Financing Receivable, Individually Evaluated for Impairment Allowance as a percentage of carrying value Financing Receivable, Individually Evaluated for Impairment, Allowance as a Percent of Carrying Value Financing Receivable, Individually Evaluated for Impairment, Allowance as a Percent of Carrying Value Loans collectively evaluated for impairment Financing Receivable, Collectively Evaluated for Impairment [Abstract] Financing Receivable, Collectively Evaluated for Impairment [Abstract] Allowance for loan and lease losses Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Carrying value Financing Receivable, Collectively Evaluated for Impairment Allowance as a percentage of carrying value Financing Receivable, Collectively Evaluated For Impairment, Allowance As Percent Of Carrying Value Financing Receivable, Collectively Evaluated For Impairment, Allowance As Percent Of Carrying Value Purchased credit-impaired loans Financing Receivable, Acquired with Deteriorated Credit Quality [Abstract] Financing Receivable, Acquired with Deteriorated Credit Quality [Abstract] Valuation allowance Financing Receivable, Allowance for Credit Losses, Acquired with Deteriorated Credit Quality Valuation allowance as a percentage of carrying value Financing Receivable, Acquired with Deteriorated Credit Quality, Allowance As Percent Of Carrying Value Financing Receivable, Acquired with Deteriorated Credit Quality, Allowance As Percent Of Carrying Value Total Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] Allowance for loan and lease losses Carrying value Loans And Leases Receivable Net Reported Amount Excluding Loans Measured At Fair Value Loans and leases receivable net reported amount excluding loans measured at fair value. Allowance as a percentage of carrying value Loans and Leases Receivable, Allowance As Percentage Of Carrying Value Allowance as percentage of outstanding loans and leases. Schedule of Assumptions for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Table] Schedule of Assumptions for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Table] Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items] Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items] Weighted-average OAS Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Weighted Average Option Adjusted Spread This represents the weighted-average option adjusted spread component of the economic assumptions used in the Option Adjusted Spread valuation approach used to determine the fair value of mortgage servicing rights which factors in prepayment risk. Weighted-average life, in years Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Weighted Average Life Schedule of Servicing Assets at Fair Value [Table] Schedule of Servicing Assets at Fair Value [Table] Servicing Assets at Fair Value [Line Items] Servicing Assets at Fair Value [Line Items] Activity for residential first mortgage MSRs Servicing Asset at Fair Value, Amount [Roll Forward] Balance, beginning of period Additions Servicing Asset at Fair Value, Additions Sales Servicing Asset at Fair Value, Disposals Amortization of expected cash flows Servicing Asset At Fair Value, Amortization of Expected Cash Flows This represents the net change in fair value of the MSR asset due to the recognition of modeled cash flows. Impact of changes in interest rates and other market factors Servicing Asset At Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs, Interest Rates and Other Market Factors This represents the change in modeled MSR fair value primarily due to observed changes in interest rates, volatility, spreads and the shape of the forward swap curve. Model and other cash flow assumption changes: Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs or Changes in Assumptions [Abstract] Projected cash flows, including changes in costs to service loans Servicing Asset At Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs, Projected Cash Flow Including Changes in Costs to Service Loans This represents the net change in projected cash flows due to the recognition of modeled cash flows, on the fair value of servicing assets. Impact of changes in the Home Price Index Servicing Asset At Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs, Home Price Index This represents the changes in the Home Price Index, on the fair value of servicing assets. Impact of changes to the prepayment model Servicing Asset At Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs, Prepayment Model This represents the changes to the prepayment modeal, on the fair value of servicing assets. Other model changes Servicing Asset at Fair Value, Other Changes that Affect Balance Balance, end of period Mortgage loans serviced for investors (in billions) Servicing Asset At Fair Value, For Investors This represents the unpaid principal balance of mortgage loans serviced for investors at fair value. Option adjusted spread due to MSR model recalibration Servicing Asset At Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs, Option Adjusted Spread option adjusted spread due to MSR model recalibration Fair Value of Financial Instruments Financial Instruments Disclosure [Text Block] Loans and leases Loans and leases [Member] -- None. No documentation exists for this element. -- Transferred financial assets, amount issued Continuing Involvement With Transferred Financial Assets, Amount Issued Continuing Involvement With Transferred Financial Assets, Amount Issued Transferred financial assets, stated interest rate Continuing Involvement With Transferred Financial Assets Stated Interest Rate The stated interest rate of securities issued by securitization trusts to the entity. Transaction Type [Axis] Transaction Type [Axis] Transaction [Domain] Transaction [Domain] Over-the-counter Over the Counter [Member] Exchange-traded Exchange Traded [Member] Over-the-counter cleared Exchange Cleared [Member] Total gross derivative liabilities, before netting Derivative Liability, Fair Value, Gross Liability Less: Legally enforceable master netting agreements and cash collateral paid Derivative liabilities, after netting Derivative Liability, Fair Value, Amount Not Offset Against Collateral Other gross derivative liabilities Derivative Liability, Not Subject to Master Netting Arrangement Less: Financial instruments collateral Derivative, Collateral, Right to Reclaim Securities Total net derivative liabilities Derivative Liability, Fair Value, Amount Offset Against Collateral Activity for Residential First Mortgage MSRs Schedule of Servicing Assets at Fair Value [Table Text Block] Assumption for Fair Value of MSRs Schedule of Assumptions for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Table Text Block] Sensitivity of the Weighted-Average Lives and Fair Value of MSRs Schedule of Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets [Table Text Block] Servicing Asset at Amortized Cost [Table] Servicing Asset at Amortized Cost [Table] Residential Reverse Mortgage Servicing Rights [Member] Residential Reverse Mortgage Servicing Rights [Member] Residential Reverse Mortgage Servicing Rights [Member] Servicing Asset at Amortized Cost [Line Items] Servicing Asset at Amortized Cost [Line Items] Servicing assets at amortized cost Servicing Asset at Amortized Cost Receivables Acquired with Deteriorated Credit Quality [Axis] Receivables Acquired with Deteriorated Credit Quality [Axis] Information identifying deteriorated credit quality of acquired receivables. Receivables Acquired with Deteriorated Credit Quality [Domain] Receivables Acquired with Deteriorated Credit Quality [Domain] [Domain] for Information identifying deteriorated credit quality of acquired receivables. Receivables Acquired with Deteriorated Credit Quality Receivables Acquired with Deteriorated Credit Quality [Member] Acquired receivables with deteriorated credit quality. Allowance for Loan and Lease Losses [Roll Forward] Allowance for Loan and Lease Losses [Roll Forward] Allowance for loan and lease losses, January 1 Loans and leases charged off Allowance for Loan and Lease Losses, Write-offs Recoveries of loans and leases previously charged off Allowance for Loan and Lease Loss, Recovery of Bad Debts Net charge-offs Allowance for Loan and Lease Losses Write-offs, Net Provision for loan and lease losses Provision for Loan and Lease Losses Other Allowance for Loan and Lease Losses, Adjustments, Net Allowance for loan and lease losses, December 31 Reserve for unfunded lending commitments, January 1 Financing Receivable, Allowance for Credit Losses Provision for unfunded lending commitments Reserve for unfunded lending commitments, December 31 Allowance for credit losses Refreshed FICO score other internal credit metrics [Member] Refreshed FICO score other internal credit metrics [Member] Refreshed FICO score other internal credit metrics. Business Card and Small Business Loan Business Card and Small Business Loan [Member] Business Card and Small Business Loan [Member] Pass rated Risk Ratings, Pass Rated [Member] Risk Ratings, Pass Rated [Member] Reservable criticized Risk Ratings, Reservable Criticized [Member] Risk Ratings, Reservable Criticized Refreshed FICO or Internal Credit Metric Refreshed FICO or Internal Credit Metric [Member] Refreshed FICO or Internal Credit Metric Internal Credit Metrics Internal Credit Metrics [Member] Internal Credit Metrics [Member] Deferred tax assets Deferred Tax Assets, Net [Abstract] Net operating loss carryforwards Accrued expenses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Tax credit carryforwards Deferred Tax Assets, Tax Credit Carryforwards Security, loan and debt valuations Deferred Tax Assets, Security, Loan, and Debt Valuations Deferred Tax Assets, Security, Loan, and Debt Valuations Allowance for credit losses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses Employee compensation and retirement benefits Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits State income taxes Deferred Tax Assets, State Taxes Available-for-sale securities Deferred Tax Assets, Investments Other Deferred Tax Assets, Other Gross deferred tax assets Deferred Tax Assets, Gross Valuation allowance Deferred Tax Assets, Valuation Allowance Total deferred tax assets, net of valuation allowance Deferred Tax Assets, Net of Valuation Allowance Deferred tax liabilities Deferred Tax Liabilities, Gross [Abstract] Equipment lease financing Deferred Tax Liabilities, Leasing Arrangements Intangibles Deferred Tax Liabilities, Intangible Assets Mortgage servicing rights Deferred Tax Liabilities, Mortgage Servicing Rights Available-for-sale securities Deferred Tax Liabilities, Investments Fee income Deferred Tax Liabilities, Tax Deferred Income Long-term borrowings Deferred Tax Liabilities Long Term Borrowings Deferred Tax Liabilities, Long Term Borrowings Other Deferred Tax Liabilities, Other Gross deferred tax liabilities Deferred Tax Liabilities, Gross Net deferred tax assets Deferred Tax Assets, Net Statement of Income Condensed Income Statement [Table Text Block] Balance Sheet Condensed Balance Sheet [Table Text Block] Statement of Cash Flows Condensed Cash Flow Statement [Table Text Block] Schedule of Securitization or Asset-backed Financing Arrangements, Financial Asset for which Transfer is Accounted as Sale [Table] Schedule of Securitization or Asset-backed Financing Arrangements, Financial Asset for which Transfer is Accounted as Sale [Table] Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items] Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items] Gain (loss) on loans securitized Gain (Loss) on Loans Held-for-sale and Securitization Financial Asset For Which Transfer is Accounted as Sale Gain (Loss) on Sale Gain (Loss) on Loans Held-for-sale and Securitization Financial Asset For Which Transfer is Accounted as Sale Gain (Loss) on Sale Transfers of financial assets accounted for as sale initial fair value of assets Transfers of Financial Assets Accounted For as Sale Initial Fair Value of Assets Obtained as Proceeds, in Period Represents the initial fair value recorded for assets received on transfer of financial assets in a securitization, asset-backed financing arrangement, or a similar transfer which transaction is recognized as a sale of the transferred financial assets, during the period. Servicing fees Contractually Specified Servicing Fees, Late Fees, and Ancillary Fees Earned in Exchange for Servicing Financial Assets Servicing advance Transfers Continuing Involvement Servicing Fee Advances Represents the servicing advances on loans serviced, including securitizations where the entity has continuing involvement. Advance types include principal and interest (P&I), tax and insurance (T&I, also known as escrow advances) and corporate payments which are costs associated with foreclosing on and liquidating mortgage collateral. Loans repurchased from investors and securitization trusts Cash Flows Between Transferor and Transferee, Purchases of Previously Transferred Financial Assets Legally binding unfunded commitments syndicated Credit Extension Commitments, Notional Amount, Distributions to Other Financial Institutions Legally binding unfunded commitments distributed to other financial institutions. Carrying amount credit extension commitments syndicated Credit Extension Commitments, Carrying Value This represents the carrying amount of legally binding unfunded lending commitments, excluding commitments accounted for under the fair value option, that have been distributed to other financial institutions. Deferred revenue Credit Extension Commitments, Deferred Revenue Credit Extension Commitments, Deferred Revenue Other liabilities reserve for unfunded lending commitments Credit Extension Commitments, Reserve for Unfunded Lending Commitments Represents the estimated probable losses related to unfunded lending commitments measured at historical cost, such as letters of credit and financial guarantees, and binding unfunded loan commitments. Unfunded lending commitments are subject to the same assessment as funded loans except utilization assumptions are considered. Notional amount of credit extension commitments under fair value option Credit Extension Commitments, Notional Amount, Recorded Under Fair Value This represents the notional amount of commitments to extend credit which are accounted for under the fair value option. Fair value carrying amount liabilities Schedule of Goodwill [Table] Schedule of Goodwill [Table] Goodwill [Line Items] Goodwill [Line Items] Total Goodwill Impairment loss on goodwill Goodwill, Impairment Loss Outstanding Loans and Leases Loans, Notes, Trade and Other Receivables, Excluding Allowance for Credit Losses [Text Block] Rollforward of Credit Losses Recognized: Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] Balance, January 1 Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held Additions for credit losses recognized on AFS debt securities that had no previous impairment losses Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment Additions for credit losses recognized on AFS debt securities that had previously incurred impairment losses Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses Reductions for AFS debt securities matured, sold or intended to be sold Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions Balance, December 31 Goodwill Schedule of Goodwill [Table Text Block] Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of Amortization Expense Finite-lived Intangible Assets Amortization Expense [Table Text Block] Schedule of Future Intangible Asset Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Balance of Long-term Debt Schedule of Long-term Debt Instruments [Table Text Block] Schedule of Maturities of Long-term Debt Schedule of Maturities of Long-term Debt [Table Text Block] Financial Instruments Subject to Mandatory Redemption Disclosure Financial Instruments Subject to Mandatory Redemption Disclosure [Table Text Block] Consolidation Consolidation, Policy [Policy Text Block] Basis of Accounting Basis of Accounting, Policy [Policy Text Block] New Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Securities Financing Agreements Repurchase and Resale Agreements Policy [Policy Text Block] Collateral Repurchase Agreements, Collateral, Policy [Policy Text Block] Trading Instruments Marketable Securities, Trading Securities, Policy [Policy Text Block] Derivatives and Hedging Activities Derivatives, Policy [Policy Text Block] Interest Rate Lock Commitments Interest Rate Lock Commitments, Policy [Policy Text Block] Interest Rate Lock Commitments, Policy [Policy Text Block] Securities Investment, Policy [Policy Text Block] Loans and Leases Finance, Loans and Leases Receivable, Policy [Policy Text Block] Allowance for Credit Losses Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] Nonperforming Loan and Lease, Charge-offs and Delinquencies Loans and Leases Receivable, Nonperforming Loan and Lease, Policy [Policy Text Block] Troubled Debt Restructurings Loans and Leases Receivable, Troubled Debt Restructuring Policy [Policy Text Block] Loan Held-for-sale Finance, Loan and Lease Receivables, Held-for-sale, Policy [Policy Text Block] Premises and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Mortgage Servicing Rights Transfers and Servicing of Financial Assets, Policy [Policy Text Block] Goodwill and Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Variable Interest Entities Consolidation, Variable Interest Entity, Policy [Policy Text Block] Fair Value Fair Value Measurement, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Retirement Benefits Pension and Other Postretirement Plans, Policy [Policy Text Block] Accumulated Other Comprehensive Income Stockholders' Equity, Policy [Policy Text Block] Revenue Recognition Revenue Recognition, Policy [Policy Text Block] Earnings Per Common Share Earnings Per Share, Policy [Policy Text Block] Foreign Currency Translation Foreign Currency Transactions and Translations Policy [Policy Text Block] Credit Card and Deposit Arrangements Credit Card and Deposit Agreements, Policy [Policy Text Block] Credit Card and Deposit Agreements, Policy [Policy Text Block] 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] Net actuarial loss (gain) Defined Benefit Plan, Future Amortization of Gain (Loss) Prior service cost Defined Benefit Plan, Future Amortization of Prior Service Cost (Credit) Total amounts amortized from accumulated OCI Defined Benefit Plan, Amount to be Amortized from Accumulated Other Comprehensive Income (Loss) Next Fiscal Year Changes in the Allowance for Credit Losses Allowance for Credit Losses on Financing Receivables [Table Text Block] Weighted average rate of debt minimum Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum Weighted average rate of debt maximum Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum Percentage bearing variable interest, percentage rate Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate Per annum interest rate of the notes Schedule of Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table] Schedule of Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] Significant Assumptions: Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures [Abstract] Prepayment speed Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Prepayment Speed Represents the annual constant prepayment speed. This is a significant assumption used in the valuation of mortgage backed securities. Loss severity Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Loss Severity Represents the assumption related to severity of impairment used in the valuation of mortgage backed securities. Life default rate Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Life Default Rate Represents the life default rate on mortgage backed securities. This is a significant assumption used in the valuation of mortgage backed securities. Current income tax expense Current Income Tax Expense (Benefit), Continuing Operations [Abstract] U.S. federal Current Federal Tax Expense (Benefit) U.S. state and local Current State and Local Tax Expense (Benefit) Non-U.S. Current Foreign Tax Expense (Benefit) Total current expense Current Income Tax Expense (Benefit) Deferred income tax expense (benefit) Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] U.S. federal Deferred Federal Income Tax Expense (Benefit) U.S. state and local Deferred State and Local Income Tax Expense (Benefit) Non-U.S. Deferred Foreign Income Tax Expense (Benefit) Deferred Income Tax Expense (Benefit) Total income tax expense (benefit) Nonrecurring Fair Value, Measurements, Nonrecurring [Member] Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis Foreclosed properties, measured at fair value Foreclosed Properties Fair Value Disclosure This represents the balance of foreclosed properties measured at fair value on a nonrecurring basis categorized as Level 2 and 3 based on observability of inputs. Gains (Losses) on loans held-for-sale Gains (Losses) On Loans Held For Sale This represents the amount of gain (loss) recognized on LHFS, still held as of the reporting date, measured at fair value on a nonrecurring basis. Gains (Losses) on loans and leases Gain Loss On Loans And Leases This represents the amount of gain (loss) recognized on Loans and Leases, still held as of the reporting date, measured at fair value on a nonrecurring basis. Gains (Losses) on Foreclosed Properties Gain Loss On Foreclosed Properties This represents the amount of gain (loss) recognized on foreclosed properties, still held as of the reporting date, measured at fair value on a nonrecurring basis. Gains (Losses) on other assets Gain Loss on Other Assets This represents the amount of gain (loss) recognized on other assets, still held as of the reporting date, measured at fair value on a nonrecurring basis. Other Assets are those not individually reported in the financial statements or separately disclosed. Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Reconciliation of Operating Profit (Loss) from Segments to Consolidated Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Reconciliation of Revenue from Segments to Consolidated Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Reconciliation of Assets from Segment to Consolidated Reconciliation of Assets from Segment to Consolidated [Table Text Block] Other Variable Interest Entities Customer Vehicles Customer Vehicles [Member] Customer Vehicles [Member] Collateralized Debt Obligations Collateralized Debt Obligations [Member] Investment Vehicles Investment Vehicles [Member] Investment Vehicles [Member] Leveraged Lease Trusts Leveraged Lease Trusts [Member] Leveraged Lease Trusts. Real Estate Vehicles Real Estate Vehicles [Member] Real Estate Vehicles [Member] Other Asset Back Financing Arrangement Other Asset Back Financing Arrangement [Member] Other Asset Back Financing Arrangement [Member] Consolidated total assets of VIEs Variable Interest Entity, Consolidated, Carrying Amount, Assets Total assets of VIEs Variable Interest Entity Consolidated And Nonconsolidated Carrying Amount Assets Variable Interest Entity Consolidated And Nonconsolidated Carrying Amount Assets Notional amount of liquidity exposure Notional Amount Of Liquidity Exposure This represents the notional amount of liquidity exposure. Financing provided for asset-backed financing arrangements, percentage Financing Provided For Asset Backed Financing Arrangements Percentage This represents the percentage of the purchase price for which the Corporation provided financing to certain independent third parties for pools of securities transferred under asset-backed financing arrangements. Period uncollected fees are written off for credit receivables Threshold Period Uncollected Fees for Write-off on Card Receivables Threshold Period Uncollected Fees for Write-off on Card Receivables Period uncollected fees are written off Threshold Period for Uncollected Fees for Service Charges on Card Receivables Threshold Period for Uncollected Fees for Service Charges on Card Receivables Change in fair value of plan assets Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward] Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward] Actual Return on Plan Assets Still Held at the Reporting Date Defined Benefit Plan, Actual Return on Plan Assets Still Held Purchases Defined Benefit Plan, Business Combinations and Acquisitions, Plan Assets Sales and Settlements Defined Benefit Plan, Divestitures and Settlements, Plan Assets Sales, and settlements of plan assets that occurred during the period. Transfers into/ (out of) Level 3 Defined Benefit Plan, Transfers Between Measurement Levels 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 of period Accretion Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion Loans purchased Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Additions Disposals/transfers Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Disposals of Loans and Transfers to Loans Held-for-sale Certain loans acquired in transfer not accounted for as debt securities Accretable yield disposals transfers. Reclassifications from nonaccretable difference Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications (to) from Nonaccretable Difference Accretable yield, ending of period Purchased credit impaired loans sold Certain Loans Acquired in Transfer Accounted for as Held-to-maturity Debt Securities, Accretable Yield, Disposals of Loans Financing receivable allowance sold Allowance for Loan and Lease Losses, Loans Sold Mortgage Backed Securities Collateralized Mortgage Backed Securities [Member] Ambac Countrywide Litigation, Claim One Ambac Countrywide Litigation, Claim One [Member] Ambac Countrywide Litigation, Claim One Ambac Countrywide Litigation, Claim Two Ambac Countrywide Litigation, Claim Two [Member] Ambac Countrywide Litigation, Claim Two Ambac Countrywide Litigation, Claim Three Ambac Countrywide Litigation, Claim Three [Member] Ambac Countrywide Litigation, Claim Three Fontainebleau Las Vegas Litigation Fontainebleau Las Vegas Litigation [Member] Fontainebleau Las Vegas Litigation [Member] In Re Payment Card Interchange Fee and Merchant Discount Anti-Trust Litigation (Interchange) In Re Payment Card Interchange Fee and Merchant Discount Anti-Trust Litigation (Interchange) [Member] In Re Payment Card Interchange Fee and Merchant Discount Anti-Trust Litigation (Interchange) [Member] The Office of the Comptroller Litigation The Office of the Comptroller of the Currency Litigation [Member] The Office of the Comptroller of the Currency Litigation [Member] Montgomery Litigation Montgomery Litigation [Member] Montgomery Litigation Federal Home Loan Bank Settlement Federal Home Loan Bank Settlement [Member] Federal Home Loan Bank Settlement Luther Class Action Settlement Luther Class Action Litigation [Member] Luther Class Action Litigation [Member] Prudential Insurance Litigation Prudential Insurance Litigation [Member] Prudential Insurance Litigation [Member] U.S. Bank Litigation U.S. Bank Litigation [Member] U.S. Bank Litigation [Member] U.S. Bank Summonses with Notice Litigation U.S. Bank Summonses with Notice Litigation [Member] U.S. Bank Summonses with Notice Litigation [Member] Ocala Investor Litigation Ocala Investor Litigation [Member] Ocala Investor Litigation [Member] O'Donnell Litigation O'Donnell Litigation [Member] O'Donnell Litigation [Member] Policemen’s Annuity Litigation Policemen’s Annuity Litigation [Member] Policemen’s Annuity Litigation [Member] Takefuji Settlement Takefuji Settlement [Member] Takefuji Settlement [Member] Litigation settlement expense Litigation Settlement, Expense Minimum estimated range of possible loss Loss Contingency, Range of Possible Loss, Minimum Damages sought (more than) Loss Contingency, Damages Sought, Value Estimated litigation liability Litigation Liability Estimate Litigation Liability Estimate Number of partially insured residential mortgage backed securities backed by negative amortization pay option adjustable-rate mortgage loans Loss Contingency, Number of Partially Insured Residential Mortgage Backed Securities Loss Contingency, Number of Partially Insured Residential Mortgage Backed Securities Number of partially insured residential mortgage backed securities backed by negative amortization pay option adjustable-rate mortgage loans issued and underwritten by non-parties Loss Contingency, Number of Partially Insured Residential Mortgage Backed Securities Issued and Underwritten by Non-Parties Loss Contingency, Number of Partially Insured Residential Mortgage Backed Securities Issued and Underwritten by Non-Parties Total litigation settlement for group of defendants Litigation Settlement, Amount, Total for Group of Defendants Litigation Settlement, Amount, Total for Group of Defendants Basis points distributed to class merchants Litigation Settlement, Distributed to Class Merchants, Basis Points Litigation Settlement, Distributed to Class Merchants, Basis Points Number of consecutive months distribution to class merchants Litigation Settlement, Distribution to Class Merchants, Number of Consecutive Months Litigation Settlement, Distribution to Class Merchants, Number of Consecutive Months Number of opt-out suits Litigation Settlement, Number of Opt-Out Suits Litigation Settlement, Number of Opt-Out Suits Number of opt-out suits brought by cardholders Litigation Settlement, Number of Opt-Out Suits Brought by Cardholders Litigation Settlement, Number of Opt-Out Suits Brought by Cardholders Number of opt-out suits not yet filed Litigation Settlement, Number of Opt-Out Suits Not Yet Filed Litigation Settlement, Number of Opt-Out Suits Not Yet Filed Number of offerings at issue Loss Contingency, Offerings at Issue, Number Loss Contingency, Offerings at Issue, Number Alleged proceeds from issuance of preferred stock Loss Contingency, Alleged Proceeds Received from Issuance of Preferred Stock Loss Contingency, Alleged Proceeds Received from Issuance of Preferred Stock MBS offerings purchased Loss Contingency, MBS Offerings, Securities Purchased Loss Contingency, MBS Offerings, Securities Purchased Number of private placement issued and/or underwritten Loss Contingency, Number of Private Placement Issued and/or Underwritten Loss Contingency, Number of Private Placement Issued and/or Underwritten Number of trusts defendants demanded complaints Litigation Settlement, Number of Trusts Defendants Demanded Complaints Litigation Settlement, Number of Trusts Defendants Demanded Complaints Number of trusts defendants must demand complain in next 3 months Litigation Settlement, Number of Trusts Defendants Must Demand Complaint in Next Three Months Litigation Settlement, Number of Trusts Defendants Must Demand Complaint in Next Three Months Number of trusts defendants must demand complaints in next seven months Litigation Settlement, Number of Trusts Defendants Must Demand Complaints in Next Seven Months Litigation Settlement, Number of Trusts Defendants Must Demand Complaints in Next Seven Months Number of MBS offerings Loss Contingency, Number of MBS Offerings Loss Contingency, Number of MBS Offerings Number of pending claims Loss Contingency, Pending Claims, Number Loans and leases original balance Loss Contingency, Loans and Leases Receivable, Net of Deferred Income Loss Contingency, Loans and Leases Receivable, Net of Deferred Income Subset of loans and leases original balance (more than) Loss Contingency, Subset of Loans and Leases Receivable, Net of Deferred Income Loss Contingency, Subset of Loans and Leases Receivable, Net of Deferred Income Number of claims filed Loss Contingency, New Claims Filed, Number Number of collateralized RMBS trusts Loss Contingency, Number of Collateralized Residential Mortgage Backed Securities Trusts Loss Contingency, Number of Collateralized Residential Mortgage Backed Securities Trusts Number of plaintiffs Loss Contingency, Number of Plaintiffs Number of proposed classes of purchasers Loss Contingency, Number of Proposed Classes of Purchasers Loss Contingency, Number of Proposed Classes of Purchasers Number of collateralized trusts Loss Contingency, Number of Collateralized Trusts Loss Contingency, Number of Collateralized Trusts Loss incurred by plaintiff Loss Contingency, Loss Incurred by Plaintiff Loss Contingency, Loss Incurred by Plaintiff Interest rate LItigation Settlement, Interest Rate LItigation Settlement, Interest Rate Fixed payment plan period for loans modified Financing Receivable, Fixed Payment Plan Period for Loans Modified Financing Receivable, Fixed Payment Plan Period for Loans Modified Threshold period past due for write-off of financing receivable after placed on fixed payment plan Threshold Period Past Due for Write-off of Financing Receivable after Placed on Fixed Payment Plan Threshold Period Past Due for Write-off of Financing Receivable after Placed on Fixed Payment Plan Regulatory Requirements and Restrictions Regulatory Capital Requirements under Banking Regulations [Text Block] Other Debt Securities Carried at Fair Value [Table] Other Debt Securities Carried at Fair Value [Table] Other Debt Securities Carried at Fair Value [Table] Other Debt Securities Carried at Fair Value [Line Items] Other Debt Securities Carried at Fair Value [Line Items] [Line Items] for Other Debt Securities Carried at Fair Value [Table] Unrealized mark-to-market net gains (losses) Other Debt Securities Carried at Fair Value, Unrealized Gains (Losses) Other Debt Securities Carried at Fair Value, Unrealized Gains (Losses) Realized net gains (losses) Other Debt Securities Carried at Fair Value, Realized Gains (Losses) Other Debt Securities Carried at Fair Value, Realized Gains (Losses) Credit derivatives, Unilateral Termination Option Credit Risk Contract, Unilateral Termination Option [Member] Credit Risk Contract, Unilateral Termination Option [Member] Net losses in AOCI expected to be reclassified Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months Net losses in AOCI expected to be reclassified, after tax Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months, Net of Tax Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months, Net of Tax Carrying value of written credit derivatives Credit Derivative, Fair Value, With Identical Underlying Referenced Names and Terms Represents the carrying value of written credit derivatives for which purchased credit derivatives with identical underlying referenced names were held in order to offset exposure. Notional amount of written credit derivatives Credit Derivative, Notional Amount, With Identical Underlying Referenced Names and Terms Credit Derivative, Notional Amount, With Identical Underlying Referenced Names and Terms Cash and securities held as collateral Cash and Securities Held as Collateral, at Fair Value The amount of cash and securities collateral received and posted related to derivative instruments under master netting agreements (ISDA). Cash and securities collateral posted Collateral Already Posted, Aggregate Fair Value Collateral not yet posted Collateral Not Yet Posted, Aggregate Fair Value The aggregate fair value of assets that are not yet posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. Aggregate fair value of derivative liability Derivative, Net Liability Position, Aggregate Fair Value Deposits Deposit Liabilities Disclosures [Text Block] Endorsing organization agreements minimum term Endorsing Organization Agreements, Term, Minimum Endorsing Organization Agreements, Term, Minimum Endorsing organization agreements maximum term Endorsing Organization Agreements, Term, Maximum Endorsing Organization Agreements, Term, Maximum Fair Value Measurements Fair Value Disclosures [Text Block] Outstanding Claims by Category and Product Outstanding Claims By Category And Product [Table Text Block] Outstanding Claims By Category And Product. Rollforward of Liability for Representation and Warranties Rollforward Of Liability For Representations And Warranties [Table Text Block] Rollforward Of Liability For Representations And Warranties. Loan Repurchases and Indemnification Payments Schedule of Loan Repurchases and Indemnification Payments [Table Text Block] Loan Repurchases And Indemnification Payments. Document and Entity Information [Abstract] Document And Entity Information. Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Amendment Flag Amendment Flag Document Fiscal Period Focus Document Fiscal Period Focus Current Fiscal Year End Date Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Filer Category Entity Filer Category Entity Public Float Entity Public Float Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Other than Temporary Impairment Losses, Investments, Held-to-maturity Securities [Abstract] Other than Temporary Impairment Losses, Investments, Available-for-sale Securities [Abstract] Total OTTI losses (unrealized and realized) Other than Temporary Impairment Losses, Investments, Available-for-sale Securities Unrealized OTTI losses recognized in OCI Other than Temporary Impairment Loss, Investments, Portion in Other Comprehensive Loss, before Tax, Portion Attributable to Parent, Available-for-sale Securities Net impairment losses recognized in earnings Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Equity Investment Income Principal Investment Gains (Losses) [Member] Principal Investment Gains (Losses) [Member] China Construction Bank Corporation China Construction Bank Corporation [Member] China Construction Bank Corporation [Member] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Equity method investments Equity Method Investments Other liabilities Other Liabilities [Member] Federal funds sold and securities borrowed or purchased under agreements to resell measured at fair value Trading account assets, pledged as collateral Trading Securities Pledged as Collateral Carried at fair value, pledged as collateral Debt Securities Carried at Fair Value Pledged As Collateral Debt securities carried at fair value that serve as collateral for borrowings. Held-to-maturity, pledged as collateral Held-to-maturity Securities Pledged as Collateral Loans and leases, pledged as collateral Loans Pledged as Collateral Mortgage servicing rights, measured at fair value Liabilities Interest-bearing, measured at fair value Other assets, measured at fair value Accrued expenses and other liabilities, measured at fair value Nonfinancial Liabilities Fair Value Disclosure Accrued expenses and other liabilities, reserve for unfunded lending commitments Long-term debt, measured at fair value Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Common stock, par value (in usd per share) 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 Non-recourse debt Non-Recourse Debt Plans with ABO in excess of plan assets Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract] PBO Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Projected Benefit Obligation ABO Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Accumulated Benefit Obligation Fair value of plan assets Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Fair Value of Plan Assets Plans with PBO in excess of plan assets Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets [Abstract] PBO Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets, Aggregate Benefit Obligation Fair value of plan assets Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets, Aggregate Fair Value of Plan Assets Loans Market Comparables Market Approach Valuation Technique [Member] Discount Rate Fair Value Inputs, Discount Rate Cost to sell Fair Value Inputs, Cost to Sell Selling costs as a percentage of fair value of the asset sold, used as an input to measure fair value. Federal Funds Sold or Purchased, Securities Financing Agreements and Short-Term Borrowings [Table] Federal Funds Sold or Purchased, Securities Financing Agreements and Short-Term Borrowings [Table] Federal Funds Sold or Purchased, Securities Financing Agreements and Short-Term Borrowings [Table] Bank Notes Bank Notes [Member] Bank Notes [Member] Federal funds sold Federal Funds Sold [Member] Federal Funds Sold [Member] Securities borrowed or purchased under agreements to resell Securities Borrowed or Purchased Under Agreements to Resell [Member] Securities Borrowed or Purchased Under Agreements to Resell [Member] Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Federal funds purchased Federal Funds Purchased [Member] Securities loaned or sold under agreements to repurchase Securities Loaned or Sold under Agreements to Repurchase [Member] Federal Funds Sold or Purchased, Securities Financing Agreements and Short-Term Borrowings [Line Items] Federal Funds Sold or Purchased, Securities Financing Agreements and Short-Term Borrowings [Line Items] [Line Items] for Federal Funds Sold or Purchased, Securities Financing Agreements and Short-Term Borrowings [Table] Federal funds sold Federal Funds Sold Average asset outstanding amount Short-term Investments, Average Outstanding Amount Short-term Investments, Average Outstanding Amount Maximum month-end asset outstanding amount Short-term Investments, Maximum Month-end Outstanding Amount Short-term Investments, Maximum Month-end Outstanding Amount Securities borrowed or purchased under agreements to resell Securities Purchased under Agreements to Resell Federal funds purchased Federal Funds Purchased Average liability amount during year Short-term Debt, Average Outstanding Amount Maximum month-end balance during year Short-term Debt, Maximum Month-end Outstanding Amount Securities loaned or sold under agreements to repurchase Securities Sold under Agreements to Repurchase Short-term borrowings Weighted average interest rate Short-term Investments, Weighted Average Interest Rate Short-term Investments, Weighted Average Interest Rate Average asset outstanding rate (percent) Short-term Investments, Average Outstanding Rate Short-term Investments, Average Outstanding Rate Weighted average interest rate Short-term Debt, Weighted Average Interest Rate Average liability rate during year (percent) Short-term Debt, Average Outstanding Rate This represents the yearly average interest rate applicable to short-term borrowings. Debt authorized Debt Instrument, Registration Statement, Authorized This represents the maximum dollar amount of bank notes with fixed or floating rates outstanding at any one time. Maturity period (greater than) Debt Instrument, Registration Statement, Minimum Maturity Period Debt Instrument, Registration Statement, Minimum Maturity Period Short-term bank notes outstanding Debt Instrument, Registration Statement, Short-Term Debt Outstanding Under Program Debt Instrument, Registration Statement, Short-Term Debt Outstanding Under Program Details of Time Deposits Schedule of Contractual Maturities of Time Deposits $100,000 or More [Table Text Block] Schedule of Contractual Maturities of Time Deposits $100,000 or More [Table Text Block] Schedule of Maturities for Total Time Deposits Schedule of Maturities for Time Deposits [Table Text Block] Schedule of Maturities for Time Deposits [Table Text Block] Schedule of Accumulated OCI Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Amounts Recognized in Other Comprehensive Income (Loss) Comprehensive Income (Loss) [Table Text Block] Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Cash-settled Restricted Stock Units Cash-settled Restricted Stock Units [Member] Cash-settled Restricted Stock Units [Member] Restricted Stock and Restricted Stock Units Restricted Stock and Restricted Stock Units [Member] Restricted Stock and Restricted Stock Units [Member] Restricted Stock/Units (in shares); Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Outstanding at beginning of period Granted Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Canceled Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Outstanding at end of period Weighted-average Grant Date Fair Value (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] Outstanding at beginning of 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 Canceled Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Outstanding at end of period Total Unrecognized Compensation Cost Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options Total Unrecognized Compensation Cost, Expected Period Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition, Maximum Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition, Maximum Total Unrecognized Compensation Cost, Period for Recognition Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Vested in Period, Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Cash Flow Effect, Cash Used to Settle Awards Employee Service Share-based Compensation, Cash Flow Effect, Cash Used to Settle Awards Allowance for Credit Losses Allowance for Credit Losses [Text Block] Earnings Per Common Share Earnings Per Share [Text Block] Total gross derivative assets, before netting Derivative Asset, Fair Value, Gross Asset Less: Legally enforceable master netting agreements and cash collateral received Derivative assets, after netting Derivative Asset, Fair Value, Amount Not Offset Against Collateral Other gross derivative assets Derivative Asset, Not Subject to Master Netting Arrangement Derivative assets Less: Financial instruments collateral Derivative, Collateral, Obligation to Return Securities Total net derivative assets Derivative Asset, Fair Value, Amount Offset Against Collateral Condensed Income Statement [Table] Condensed Income Statement [Table] Condensed Income Statements, Captions [Line Items] Condensed Income Statements, Captions [Line Items] Dividends from subsidiaries Cash Dividends from Subsidiaries Cash Dividends from Subsidiaries Interest from subsidiaries Interest Income from Subsidiaries Represents interest income from subsidiaries. Interest on borrowed funds Interest Expense, Borrowings Noninterest expense Total Expense Operating Expenses Income (loss) before income taxes and equity in undistributed earnings of subsidiaries Income (Loss) from Continuing Operations, before Income (Loss) From Subsidiaries, Net of Tax Represents income before equity in undistributed earnings of subsidiaries. Income (loss) before equity in undistributed earnings of subsidiaries Income (Loss) from Continuing Operations, after Income (Loss) From Subsidiaries, Net of Tax Income (Loss) from Continuing Operations, after Income (Loss) From Subsidiaries, Net of Tax Bank holding companies and related subsidiaries Net income (loss) applicable to common shareholders Income Taxes Income Tax Disclosure [Text Block] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Loans Loans Receivable, Fair Value Disclosure, Net of Allowance, Excluding Leases This reflects the aggregate carrying amount of all categories of loans held in portfolio, net of unearned income and the allowance for losses on loans. Financial liabilities Financial Liabilities Fair Value Disclosure [Abstract] Deposits Deposits, Fair Value Disclosure Commercial unfunded lending commitments Unfunded Lending Commitments, Fair Value Disclosure Unfunded Lending Commitments, Fair Value Disclosure Federal Funds Sold or Purchased, Securities Financing Agreements and Short-term Borrowings Repurchase Agreements, Resale Agreements, Securities Borrowed, Securities Loaned, and Short-Term Borrowings Disclosure [Text Block] Repurchase Agreements, Resale Agreements, Securities Borrowed, Securities Loaned, and Short-Term Borrowings Disclosure [Text Block] Parent Company Information Condensed Financial Information of Parent Company Only Disclosure [Text Block] Number of operating segments Number of Operating Segments Number of states in which entity operates Number of States in which Entity Operates Number of banking centers Number of Banking Centers Number of Banking Centers Number of ATMs Number of ATMs Number of ATMs Annual sales of business clients Annual Sales of Business Clients Annual Sales of Business Clients Effective Income Tax Rate Reconciliation, Amount [Abstract] Effective Income Tax Rate Reconciliation, Amount [Abstract] Expected U.S. federal income tax expense Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount State tax expense, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Affordable housing credits/other credits Effective Income Tax Rate Reconciliation, Tax Credit, Amount Tax-exempt income, including dividends Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount Non-U.S. tax rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential Including Repatriation of Foreign Earnings, Amount Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential Including Repatriation of Foreign Earnings, Amount Nondeductible expenses Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount Leveraged lease tax differential Effective Income Tax Rate Reconciliation, Leveraged Lease Tax Differential, Amount Effective Income Tax Rate Reconciliation, Leveraged Lease Tax Differential, Amount Non-U.S. statutory rate reductions Effective Income Tax Rate Reconciliation, Non-U.S. Statutory Rate Reductions, Amount Effective Income Tax Rate Reconciliation, Non-U.S. Statutory Rate Reductions, Amount Other Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Effective Income Tax Rate Reconciliation, Percent [Abstract] Effective Income Tax Rate Reconciliation, Percent [Abstract] Expected U.S. federal income tax expense Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent State tax expense, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Affordable housing credits/other credits Effective Income Tax Rate Reconciliation, Tax Credit, Percent Changes in prior period UTBs, including interest Effective Income Tax Rate Reconciliation, Changes in Prior Period Unrealized Tax Benefits, Including Interest, Percent Effective Income Tax Rate Reconciliation, Changes in Prior Period Unrealized Tax Benefits, Including Interest, Percent Tax-exempt income, including dividends Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent Non-U.S. tax rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential Including Repatriation of Foreign Earnings, Percent Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential Including Repatriation of Foreign Earnings, Percent Nondeductible expenses Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent Leveraged lease tax differential Effective Income Tax Rate Reconciliation, Leveraged Lease Tax Differential, Percent Effective Income Tax Rate Reconciliation, Leveraged Lease Tax Differential, Percent Non-U.S. statutory rate reductions Effective Income Tax Rate Reconciliation, Non-U.S. Statutory Rate Reductions, Percent Effective Income Tax Rate Reconciliation, Non-U.S. Statutory Rate Reductions, Percent Other Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Total income tax expense (benefit) Effective Income Tax Rate Reconciliation, Percent Repatriation of foreign earnings amount Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount Performance by Geographic Area Performance by Geographical Area Disclosure [Text Block] Performance by Geographical Area Disclosure [Text Block] Segment Reporting Disclosure Segment Reporting Disclosure [Text Block] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Carrying and Fair Value of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block]