Segment Reporting [Abstract] Business Segments Segment Reporting Disclosure [Text Block] Share-based Payment Arrangement [Abstract] Tax benefit from compensation expense Share-based Payment Arrangement, Expense, Tax Benefit Investments, Debt and Equity Securities [Abstract] Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-sale [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Total mortgage-backed securities Collateralized Mortgage Backed Securities [Member] U.S. GSEs and government agencies Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Residential: U.S. Domestic Mortgage-backed Securities [Member] Domestic Mortgage-backed Securities [Member] Residential: Non-U.S. Foreign Mortgage-backed Securities [Member] Mortgage-backed Securities from countries other than the entity's country of domicile. Commercial Commercial Mortgage Backed Securities [Member] U.S. Treasury and government agencies US Treasury and Government [Member] Obligations of U.S. states and municipalities US States and Political Subdivisions Debt Securities [Member] Certificates of deposit Certificates of Deposit [Member] Non-U.S. government debt securities Debt Security, Government, Non-US [Member] Corporate debt securities Corporate Debt Securities [Member] Asset-backed securities: Collateralized loan obligations Collateralized Loan Obligations [Member] Asset-backed securities: Other Other Debt Obligations [Member] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Available-for-sale securities Debt Securities, Available-for-sale, Continuous Unrealized Loss Position [Abstract] Debt Securities, Available-for-sale, Continuous Unrealized Loss Position [Abstract] Less than 12 months, Fair value Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months Less than 12 months, Gross unrealized losses Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 12 months or more, Fair value Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 12 months or more, Gross unrealized losses Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Total fair value Debt Securities, Available-for-sale, Unrealized Loss Position Total gross unrealized losses Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss Debt Securities, Held-to-maturity [Table] Debt Securities, Held-to-maturity [Table] Schedule of Held-to-maturity Securities [Line Items] Schedule of Held-to-maturity Securities [Line Items] Held-to-maturity securities Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position [Abstract] Less than 12 months, Fair value Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value Less than 12 months, Gross unrealized losses Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 12 months or more, Fair value Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value 12 months or more, Gross unrealized losses Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Total fair value Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value Total gross unrealized losses Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss Total investment securities with gross unrealized losses Investment Securities, Continuous Unrealized Loss Position [Abstract] Investment Securities, Continuous Unrealized Loss Position [Abstract] Less than 12 months, Fair value Investment Securities, Continuous Unrealized Loss Position, Less Than Twelve Months, Fair Value This item represents the aggregate fair value of investments in debt and equity securities not categorized as trading securities that have been in a continuous unrealized loss position for less than twelve months. Less than 12 months, Gross unrealized losses Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss, Point in Time Amount of unrealized loss at a point in time on investments in available-for-sale or held-to-maturity securities that have been in a loss position for less than twelve months. 12 months or more, Fair value Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value This item represents the aggregate fair value of investments in debt and equity securities not categorized as trading securities that have been in a continuous unrealized loss position for twelve months or longer. 12 months or more, Gross unrealized losses Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss, Point in Time Amount of unrealized loss at a point in time on securities classified as available-for-sale or held-to-maturity that have been in a loss position for twelve months or longer. Total fair value Investment Securities, Continuous Unrealized Loss Position, Fair Value This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are not categorized neither as trading securities. Total gross unrealized losses Investment Securities, Continuous Unrealized Loss Position, Aggregate Loss, Point in Time Amount of unrealized loss at a point in time on securities classified as available-for-sale or held-to-maturity. Off-Balance Sheet Lending-Related Financial Instruments, Guarantees and Other Commitments [Abstract] Off Balance Sheet Lending Related Financial Instruments Guarantees And Other Commitments Abstract. Off-balance sheet lending related financial instruments, guarantees and other commitments Off-Balance Sheet Lending-Related Financial Instruments, Guarantees and Other Commitments [Table Text Block] Schedule of off-balance sheet lending-related financial instruments, guarantees and other commitments. Standby letters of credit, other financial guarantees and other letters of credit Standby letters of Credit Other Financial Guarantees and Other Letters of Credit [Table Text Block] Schedule of standby letters of credit, other financial guarantees and other letters of credit. Schedule of derivatives qualifying as guarantees Schedule of Guarantor Obligations [Table Text Block] Variable Interest Entities [Abstract] Variable Interest Entities. Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Prime/Alt-A and option ARMs Prime [Member] Subprime Subprime [Member] Variable Interest Entities by Classification of Transferee [Axis] Qualitative and Quantitative Information, Transferor's Continuing Involvement, Transferred Financial Assets, by Transfer or Transferee [Axis] Variable Interest Entities, consolidated and nonconsolidated Qualitative and Quantitative Information, Transferor's Continuing Involvement in Transferred Financial Assets, Transfer or Transferee [Domain] Nonconsolidated entities Variable Interest Entity, Not Primary Beneficiary [Member] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Securitized loans Securitized loans [Member] Securitized loans Member. Underlying Asset Class [Axis] Underlying Asset Class [Axis] Underlying Asset Class [Domain] Underlying Asset Class [Domain] Residential mortgage Residential Mortgage Backed Securities [Member] Commercial and other Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Information about delinquencies, net charge-offs, and components of off-balance sheet securitized financial assets [Abstract] Loans Managed, Securitized or Asset-backed Financing Arrangement [Abstract] Securitized assets Continuing Involvement with Derecognized Transferred Financial Assets, Amount Outstanding 90 days past due Financing Receivable, 90 Days or More Past Due, Still Accruing Net liquidation losses Net Credit Loss on Loans Managed or Securitized or Asset-backed Financing Arrangement Stockholders' Equity Note [Abstract] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common stock Common Stock [Member] Class of Stock [Line Items] Class of Stock [Line Items] Total number of shares of common stock repurchased (in shares) Treasury Stock, Shares, Acquired Aggregate purchase price of common stock repurchases Treasury Stock, Value, Acquired, Cost Method Fair Value Disclosures [Abstract] Carrying value Equity Securities without Readily Determinable Fair Value, Amount Upward carrying value changes Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount Downward carrying value changes/impairment Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Annual Amount Cumulative upward carrying value changes Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Cumulative Amount Cumulative downward carrying value changes/impairment Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Cumulative Amount Investment Holdings [Table] Investment Holdings [Table] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] VISA VISA [Member] VISA [Member] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Class B Common Class B [Member] Investment Holdings [Line Items] Investment Holdings [Line Items] Interest owned, included in other assets (in shares) Equity Securities without Readily Determinable Fair Value, Shares Equity Securities without Readily Determinable Fair Value, Shares Conversion rate Conversion of Stock, Conversion Rate Conversion of Stock, Conversion Rate Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Parent company Parent Company [Member] Subsidiaries Subsidiaries [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Fixed rate Long term Debt, Fixed Interest Rate [Member] The portion of the carrying amount of long-term borrowings outstanding as of the balance-sheet date, including current maturities, which accrues interest at a set, unchanging rate. Variable rate Long Term Debt Variable Interest Rate [Member] The portion of the carrying amount of long-term borrowings outstanding as of the balance-sheet date, including current maturities, which accrues interest at a rate subject to change from time to time. Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Federal Home Loan Banks (“FHLB”) advances Federal Home Loan Bank Advances [Member] Senior debt Senior Debt Obligations [Member] Subordinated debt Subordinated Debt Obligations [Member] Junior subordinated debt Junior Subordinated Debt [Member] Secured debt Secured Debt [Member] Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Long-term beneficial interests Beneficial interests issued by consolidated variable interest entities [Member] Beneficial interests issued by consolidated variable interest entities. Measurement Frequency [Axis] Measurement Frequency [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] Recurring Fair Value, Recurring [Member] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Guarantee of Indebtedness of Others Guarantee of Indebtedness of Others [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Long-term debt carrying values by contractual maturity Maturities of Long-term Debt [Abstract] Under 1 year Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 1-5 years Long-term Debt, Maturing in Years One through Five Amount of long-term debt maturing in years one through five following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed of determinable prices and dates. After 5 years Long-term Debt, Maturities, Repayments of Principal after Year Five Long-term debt Long-term Debt and Lease Obligation, Including Current Maturities Under 1 year, Minimum Debt Instrument Maturities In Next Twelve Months Interest Rate Stated Percentage Rate Range Minimum When presenting a range of interest rates, the lowest stated (contractual) rate for funds borrowed under the debt agreement maturing within the next twelve months following the date of the latest balance sheet presented in the financial statements. Under 1 year, Maximum Debt Instrument Maturities In Next Twelve Months Interest Rate Stated Percentage Rate Range Maximum When presenting a range of interest rates, the highest stated (contractual) rate for funds borrowed under the debt agreement maturing within the next twelve months following the date of the latest balance sheet presented in the financial statements. 1-5 years, Minimum Debt Instrument Maturities In Years One Through Five, Interest Rate Stated Percentage Rate Range, Minimum When presenting a range of interest rates, the lowest stated (contractual) rate for funds borrowed under the debt agreement maturing in years one through five following the date of the latest balance sheet presented in the financial statements. 1-5 years, Maximum Debt Instrument Maturities In Years One Through Five Interest Rate Stated Percentage Rate Range Maximum When presenting a range of interest rates, the highest stated (contractual) rate for funds borrowed under the debt agreement maturing in years one through five following the date of the latest balance sheet presented in the financial statements. After 5 years, Minimum Debt Instrument Maturities After Year Five Interest Rate Stated Percentage Rate Range Minimum When presenting a range of interest rates, the lowest stated (contractual) rate for funds borrowed under the debt agreement maturing after year five following the date of the latest balance sheet presented in the financial statements. After 5 years, maximum Debt Instrument Maturities After Year Five Interest Rate Stated Percentage Rate Range Maximum When presenting a range of interest rates, the highest stated (contractual) rate for funds borrowed under the debt agreement maturing after year five following the date of the latest balance sheet presented in the financial statements. Interest rate Debt Instrument, Interest Rate, Stated Percentage Long Term Debt - Supplemental Information Long term Debt Supplemental Information Abstract Long Term Debt Supplemental Information. Interest rate modified for the effects of hedge accounting, Minimum Debt Instrument, Interest Rate Percentage, Modified For Effects Of Hedge Accounting Excluding Debt Accounted For At Fair Value, Minimum When presenting a range of interest rates, the lowest stated contractual rate modified for the effects of hedge accounting, for funds borrowed under the debt agreement as of the balance sheet date, excluding debt accounted for at fair value. Interest rate modified for the effects of hedge accounting, Maximum Debt Instrument, Interest Rate Percentage, Modified For Effects Of Hedge Accounting Excluding Debt Accounted For At Fair Value, Maximum When presenting a range of interest rates, the highest stated contractual rate modified for the effects of hedge accounting, for funds borrowed under the debt agreement as of the balance sheet date, excluding debt accounted for at fair value. Long-term debt Long-term Debt Collateral used to secure Long-term debt Long Term Debt Collateral Collateral used to secure Long Term Debt. Long-term debt accounted for at fair value Long-term Debt, Fair Value Zero-coupon notes Zero Coupon Notes Aggregate Carrying Value Including current and noncurrent portions, aggregate carrying amount of zero-coupon long-term borrowings as of the balance sheet date. Which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any. Zero-coupon notes - aggregate principal amount at maturity Zero-coupon notes - aggregate principal amount at maturity Includes aggregate principal amount of zero-coupon long-term borrowings at their maturities. Beneficial interest, fair value disclosures Beneficial Interest, Fair Value Disclosure This element represents a certain statement of financial position liability caption which represents a class of liabilities, or which may include an individual liability, measured at fair value on a recurring basis. Commercial paper and other short-term beneficial interests Commercial Paper Redeemable long-term debt Redeemable Long Term Debt Redeemable Long Term Debt. Long term debt maturing in 2021 Long-term Debt, Maturities, Repayments of Principal in Year Two Long term debt maturing in 2022 Long-term Debt, Maturities, Repayments of Principal in Year Three Long term debt maturing in 2023 Long-term Debt, Maturities, Repayments of Principal in Year Four Long term debt maturing in 2024 Long-term Debt, Maturities, Repayments of Principal in Year Five Weighted-average contractual interest rates for long term debt Debt Instrument Weighted Average Interest Rate Stated Percentage Excluding Structured Notes Reflects the calculation as of the balance sheet date of the average interest rate weighted by the amount of debt outstanding (at fair value) for debt by type or by instrument, but excluding Structured Notes. Modified weighted-average interest rates total long-term debt Debt Instrument Weighted Average Interest Rate Modified For Effects Of Hedge Accounting The weighted average contractual rate modified for the effects of hedge accounting, for funds borrowed under the debt agreement as of the balance sheet date. Guarantee liability Guarantor Obligations, Current Carrying Value Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Warrant Warrant [Member] JPMorgan Chase & Co. Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Warrants outstanding (in shares) Class of Warrant or Right, Outstanding Stock repurchase program, shares authorized (in shares) Stock Repurchase Program, Authorized Amount Remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Total warrants repurchased (in shares) Warrants Repurchased During Period Number of warrants repurchased during the period Common stock capital shares reserved for future issuance (shares) Common Stock, Capital Shares Reserved for Future Issuance Allowance for Credit Losses [Abstract] Allowance for Credit Losses. Financing Receivable Allowance For Loan Losses Activity [Table] Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Consumer, excluding credit card Consumer, Excluding Credit Card Loan Portfolio Segment [Member] Portfolio segment of the company's total financing receivables related to consumer, excluding credit card receivables. Credit card Credit Card Loan Portfolio Segment [Member] Portfolio segment of the company's total financing receivables related to credit card receivables. Wholesale Commercial Portfolio Segment [Member] SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] Allowance for loan losses SEC Schedule, 12-09, Allowance, Loan and Lease Loss [Member] Impaired collateral-dependent loans Impaired Collateral Dependent Loans [Member] Loans that are expected paid solely by the underlying collateral, rather than by cash flows from the borrower's operations, income or other resources. Allowance for lending-related commitments Allowance For Lending Related Commitments [Member] The allowance for lending-related commitments. Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Financing Receivable Allowance For Loan Losses Activity [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Allowance for Loan and Lease Losses [Roll Forward] Allowance for Loan and Lease Losses [Roll Forward] Beginning balance Financing Receivable, Allowance for Credit Loss Gross charge-offs/Write-offs of PCI loans Allowance for Loan and Lease Losses, Write-offs Gross recoveries 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 losses/lending-related commitments Provision for Loan, Lease, and Other Losses Other Allowance for Loan and Lease Losses, Adjustments, Other Ending balance Allowance For Lending Related Commitments, by Impairment Methodology [Abstract] Impairment methodology Abstract Impairment methodology. Asset-specific Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Formula-based Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment PCI Certain Loans and Debt Securities Acquired in Transfer, Allowance for Credit Losses Due to Subsequent Impairment Allowance for lending-related commitments by impairment methodology, Asset-specific Allowance for Lending-Related Commitments, Evaluated at Asset-Specific Impairment Methodology The asset specific allowance for lending related commitments. Allowance for lending-related commitments by impairment methodology, Formula-based Allowance for Lending-Related Commitments, Evaluated at Formula-Based Impairment Methodology The allowance for lending-related commitments, evaluated at formula-based impairment methodology. Total allowance for loan losses/lending-related commitments Loans by impairment methodology Loans by Impairment Methodology [Abstract] Loans by impairment methodology. Asset-specific Financing Receivable, Individually Evaluated for Impairment Formula-based Financing Receivable, Collectively Evaluated for Impairment PCI Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Consumer, Outstanding Balance Total retained loans Loans and Leases Receivable, Net of Deferred Income Impaired collateral-dependent loans Impaired Collateral Dependent Loans [Abstract] Impaired collateral-dependent loans. Loans measured at fair value of collateral less cost to sell Loans And Leases Receivable Impaired Collateral Dependent Loans At Fair Value Reflects the carrying amount of impaired collateral dependent loans at fair value less cost to sell. Lending-related commitments by impairment methodology Asset-specific Off Balance Sheet Lending-Related Financial Commitments, Contractual Amount, Evaluated at Asset-Specific Impairment Methodology The contractual amount of off-balance sheet lending-related financial instruments (e.g., commitments and guarantees that were individually evaluated when determining the allowance for credit losses. Formula-based Off Balance Sheet Lending-Related Financial Commitments, Contractual Amount, Evaluated at Formula-Based Impairment Methodology The contractual amount of off-balance sheet lending-related financial instruments (e.g., commitments and guarantees that were collectively evaluated when determining the allowance for credit losses. Total lending-related commitments Off-Balance Sheet Lending-Related Financial Commitments, Contractual Amount The contractual amount of off-balance sheet lending-related financial instruments (e.g., commitments and guarantees), which represents the maximum possible credit risk should the counterparty draw upon the commitment or the entity be required to fulfill its obligation under the guarantee, and the counterparty subsequently fail to perform according to the terms of the contract. Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated other comprehensive income/(loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Changes of the components of accumulated other comprehensive income (loss) Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] Noninterest Income (Expense) [Abstract] Noninterest Income (Expense) [Abstract] Schedule of Non interest Revenue [Table] Schedule of Non interest Revenue [Table] Schedule of non-interest revenue comprising banking, commision and other fees, asset management, administration and transaction revenue. Equity Equity Securities [Member] Debt Debt Securities [Member] Schedule of Non interest Revenue [Line Items] Schedule of Non interest Revenue [Line Items] Schedule of Non-interest Revenue [Line Items] Underwriting Underwriting Income (Loss) Advisory Investment Banking Advisory Fee Revenue Fees earned for mergers, acquisitions, divestitures, restructurings, and other types of financial advisory services. Total investment banking fees Investment Banking Revenue Receivables [Abstract] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Credit Loss Status [Axis] Credit Loss Status [Axis] Credit Loss Status [Domain] Credit Loss Status [Domain] Residential real estate – PCI Financial Asset Acquired with Credit Deterioration [Member] Total PCI Residential Mortgage [Member] Home equity Home Equity Loan and Home Equity Line of Credit [Member] Home equity portfolio loans are comprised of both home equity lines of credit (HELOCs) and home equity loans (HELOANs). Mortgages Fixed Rate Residential Mortgage [Member] Option ARMs Adjustable Rate Residential Mortgage [Member] Prime mortgage Subprime mortgage Financial Asset, Period Past Due [Axis] Financial Asset, Period Past Due [Axis] Financial Asset, Period Past Due [Domain] Financial Asset, Period Past Due [Domain] Current Financing Receivables, Current, and Less Than 30 Days Past Due, and Still Accruing [Member] Financing Receivables, Current, and Less Than 30 Days Past Due, and Still Accruing [Member] 30–149 days past due Financing Receivables, 30 to 149 Days Past Due [Member] Retained loans that are 30 to 149 days past due. 150 or more days past due Financing Receivables, Equal to Greater than 150 Days Past Due [Member] Retained loans that are 150 days or more past due. Debt-to-Value [Axis] Debt-to-Value [Axis] Debt-to-Value [Domain] Debt-to-Value [Domain] Greater than 125% and refreshed FICO scores LTV Greater than 125 Percent [Member] Loans related to current estimated LTV ratio greater than 125%. 101% to 125% and refreshed FICO scores LTV 101 to 125 Percent [Member] Loans related to current estimated LTV ratio between 101% and 125%. 80% to 100% and refreshed FICO scores Debt-to-Value Ratio, 80 to 100 Percent [Member] Lower than 80% and refreshed FICO scores Debt-to-Value Ratio, Less than 80 Percent [Member] Credit Score, FICO [Axis] Credit Score, FICO [Axis] Credit Score, FICO [Domain] Credit Score, FICO [Domain] Equal to or greater than 660 Refreshed FICO Scores Equal to or Greater than 660 [Member] Loans related to refreshed FICO score that is equal or greater than 660. Less than 660 Refreshed FICO Scores Less than 660 [Member] Loans related to refreshed FICO score that is less than 660. No FICO/LTV available No FICO or LTV Score Available [Member] No FICO or LTV Score Available Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] California CALIFORNIA Florida FLORIDA New York NEW YORK Illinois ILLINOIS Washington WASHINGTON New Jersey NEW JERSEY Massachusetts MASSACHUSETTS Maryland MARYLAND Virginia VIRGINIA Arizona ARIZONA All other Other Geographical Areas [Member] Other geographical areas. Loans and Leases Receivable Disclosure [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Carrying value Total unpaid principal balance Impaired Financing Receivable, Unpaid Principal Balance % of 30 plus days past due to total loans Percentage of Loans Thirty Plus Days Past Due to Total Unpaid Principal Balance This item represents the percentage of loans 30 plus days past due as compared to total unpaid principal balance. Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Award Type [Domain] Award Type [Domain] RSUs/PSUs Restricted Stock Units (RSUs) and Performance Shares [Member] Restricted Stock Units (RSUs) and Performance Shares [Member] SARs/Options Employee Stock Options and SARs [Member] Employee Stock Options and SARs [Member] RSUs Restricted Stock Units (RSUs) [Member] Stock options Share-based Payment Arrangement, Option [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] RSUs/PSUs Number of Units: Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Outstanding, January 1 (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Exercised or vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Outstanding, December 31 (in shares) RSUs/PSUs Weighted-Average Grant Date Fair Value: Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Outstanding, January 1 (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 Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Exercised or vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Outstanding, December 31 (in dollars per share) Options/SARs Number of Awards: Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Outstanding, January 1 (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Exercised or vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Canceled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Outstanding, December 31 (in shares) Exercisable, December 31 (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Options/SARs Weighted-Average Exercise Price: Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Outstanding, January 1 (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Exercised or vested (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Forfeited (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Canceled (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Outstanding, December 31 (in dollars per share) Exercisable, December 31 (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted-average remaining contractual life, Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Weighted-average remaining contractual life, Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Aggregate intrinsic value, Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Aggregate intrinsic value, Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Total fair value of RSUs that vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Total intrinsic value of options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Transfers of securities to VIEs Variable Interest Entity, Transfer of Securities [Abstract] Variable Interest Entity, Transfer of Securities [Abstract] U.S. GSEs and government agencies Securities Transferred To Agency Resecuritization VIEs Amount of securities transferred to agency re-securitization VIEs during the period. Private label securities transfered to re-securitization VIEs Securities Transferred To Private Label Resecuritization VIEs Amount of securities transferred to private-label re-securitization VIEs during the period. Variable Interest Entities [Axis] Variable Interest Entities [Axis] Variable Interest Entity, Classification [Domain] Variable Interest Entity, Classification [Domain] Interest in VIEs Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net Property, Plant and Equipment [Abstract] Premises and Equipment Property, Plant and Equipment Disclosure [Text Block] Income Tax Disclosure [Abstract] Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Income Tax Authority Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] U.S. federal Domestic Tax Authority [Member] Non-U.S. Foreign Tax Authority [Member] State and local State and Local Jurisdiction [Member] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Significant Components of Deferred Tax Assets and Liabilities Components of Deferred Tax Assets and Liabilities [Abstract] Deferred tax assets Deferred Tax Assets, Gross [Abstract] Allowance for loan losses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses Employee benefits Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits Accrued expenses and other Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Loss Reserves Non-U.S. operations Deferred Tax Assets, Foreign Operations The tax effect as of the balance sheet date of the amount of all future tax deductions arising from foreign operations. Tax attribute carryforwards Deferred Tax Assets, Tax Credit Carryforwards, Other Gross deferred tax assets Deferred Tax Assets, Gross Valuation allowance Deferred Tax Assets, Valuation Allowance Deferred tax assets, net of valuation allowance Deferred Tax Assets, Net of Valuation Allowance Deferred tax liabilities Deferred Tax Liabilities, Gross [Abstract] Depreciation and amortization Deferred Tax Liabilities, Property, Plant and Equipment Mortgage servicing rights, net of hedges Deferred Tax Liabilities, Mortgage Servicing Rights Leasing transactions Deferred Tax Liabilities, Leasing Arrangements Other, net Deferred Tax Liabilities, Other Gross deferred tax liabilities Deferred Tax Liabilities, Gross Net deferred tax (liabilities)/assets Deferred Tax Liabilities, Net NOL carryforwards Operating Loss Carryforwards FTC carryforwards Deferred Tax Assets, Tax Credit Carryforwards, Foreign Retirement Benefits [Abstract] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Defined benefit pension plans Pension Plan [Member] OPEB plans Other Postretirement Benefits Plan [Member] Defined Benefit Plan, Plan Assets, Category [Axis] Defined Benefit Plan, Plan Assets, Category [Axis] Defined Benefit Plan, Plan Assets, Category [Domain] Defined Benefit Plan, Plan Assets, Category [Domain] Cash and cash equivalents Defined Benefit Plan, Cash and Cash Equivalents [Member] Cash and Cash Equivalents, Corporate Debt Securities, U.S. Federal, State, Local and Non-U.S. Government Debt Securities and Other Assets Cash and Cash Equivalents, Corporate Debt Securities, Government Debt Securities, and Plan Asset Categories Other [Member] Cash and Cash Equivalents, Corporate Debt Securities, Government Debt Securities, and Plan Asset Categories Other [Member] Equity securities Defined Benefit Plan, Equity Securities [Member] Collective investment funds Trust Funds, Common or Collective [Member] Common or collective trust funds, generally including commingled funds that are issued for investment by qualified pension plans. Limited partnerships Limited Partnerships [Member] The categorized portion of assets consisting of limited partnerships, chiefly composed of hedge funds, private equity funds and real estate. U.S. federal, state, local and non-U.S. government debt securities Government Debt Securities [Member] The categorized portion of assets consisting government debt securities of all types, including U.S. (federal, state & local) and non-U.S. Mortgage-backed securities Derivative receivables Defined Benefit Plan, Derivative [Member] Other Plan Asset Categories Other [Member] The categorized portion of plan assets not separately categorized elsewhere. COLI Policies Company Owned Life Insurance [Member] Company Owned Life Insurance [Member] Derivative payables Derivative Payables [Member] The categorized portion of plan liabilities consisting of derivative payables. Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Total fair value Fair Value, Inputs, Level 1, 2 and 3 [Member] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Certain investments measured at fair value using net asset value per share as practical expedient Fair Value Measured at Net Asset Value Per Share [Member] Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location [Domain] Retirement Plan Sponsor Location [Domain] Domestic Plan Domestic Plan [Member] U.S. UNITED STATES Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Pension and OPEB plan assets and liabilities measured at fair value Defined Benefit Plan Fair Value Of Plan Assets And Liabilities Abstract Defined Benefit Plan Fair Value Of Plan Assets And Liabilities. Total assets measured at fair value Defined Benefit Plan, Plan Assets, Amount Total liabilities measured at fair value Defined Benefit Plan, Fair Value of Plan Liabilities For a defined benefit plan, the fair value of plan liabilities. Pension and OPEB plan assets and liabilities - supplemental information Defined Benefit Plan, Fair Value of Plan Assets, Supplemental Information [Abstract] Defined Benefit Plan, Fair Value of Plan Assets, Supplemental Information [Abstract] Unfunded commitments to purchase limited partnership investments for the plan Defined Benefit Plan Unfunded Commitments To Purchase Limited Partnership Investments For The Plan Unfunded commitments to purchase limited partnership investments for a defined benefit plan. Excluded amount of receivables for investments sold and dividends and interest receivables Defined Benefit Plan, Excluded Amount of U.S. Receivables for Investments Sold and Dividends and Interest Receivables Within a defined benefit pension plan, the excluded amount of U.S. receivables for investments sold and dividends and interest receivables. Excluded amount of payables for investments purchased Defined Benefit Plan Excluded Amount Of Payables For Investments Purchased Within a defined benefit pension plan, the excluded amount of payables for investments purchased. Excluded amount of other liabilities Defined Benefit Plan Excluded Amount Of Other Liabilities Within a defined benefit pension plan, the excluded amount of other liabilities. Noncash compensation expense related to employee stock-based incentive plans Share-based Payment Arrangement, Expensed and Capitalized, Amount [Abstract] Cost of prior grants of RSUs, PSUs, SARs and employee stock options that are amortized over their applicable vesting periods Share Based Compensation Amortization Of Prior Grants Of Share based Compensation Expense related to the cost of prior grants of share-based compensation awards. Accrual of estimated costs of share-based awards to be granted in future periods including those to full-career eligible employees Share based Compensation Estimated Future Grants To Retirement Eligible Employees Expense related to accruals for future grants of share-based compensation awards to retirement eligible employees. Total noncash compensation expense related to employee share-based incentive plans Share-based Payment Arrangement, Noncash Expense Compensation cost related to unvested awards not charged to net income Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Weighted-average period for cost expected to be amortized into compensation expense Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Organization, Consolidation and Presentation of Financial Statements [Abstract] Schedule of prior period impact of adoption of new accounting standards Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Schedule of significant accounting policies Schedule of Significant Accounting Policies [Table Text Block] Schedule of Significant Accounting Policies [Table Text Block] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) by Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Risk Management Activities Risk Management Activities [Member] Risk Management Activities Member. Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Not designated as hedges Not Designated as Hedging Instrument [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest rate Interest Rate Contract [Member] Credit Credit Risk Contract [Member] Foreign exchange Foreign Exchange Contract [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Gain (Loss) on Derivative Instruments, Net, Pretax [Abstract] Gain (Loss) on Derivative Instruments, Net, Pretax [Abstract] Derivatives gains/(losses) recorded in income Derivative, Gain (Loss) on Derivative, Net Deposits [Abstract] Time Deposits [Table] Time Deposits [Table] Geographic Distribution [Axis] Geographic Distribution [Axis] Geographic Distribution [Domain] Geographic Distribution [Domain] U.S. offices Geographic Distribution, Domestic [Member] Non-U.S. offices Geographic Distribution, Foreign [Member] Time Deposits [Line Items] Time Deposits [Line Items] Total Time Deposits, at or Above FDIC Insurance Limit Tax credit vehicles Tax Credit Vehicles [Member] Tax Credit Vehicles [Member] Municipal bond vehicles Municipal Bonds [Member] Maximum exposure Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount Unfunded commitments Variable Interest Entity, Reporting Entity Involvement, Unfunded Commitments Variable Interest Entity, Reporting Entity Involvement, Unfunded Commitments Fair value of assets held by VIE Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets Comprehensive Income Loss [Table] Comprehensive Income Loss [Table] -- None. No documentation exists for this element. -- Accumulated other comprehensive income/(loss) AOCI Attributable to Parent [Member] Unrealized gains/(losses) on investment securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] Translation adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Fair value hedges, net of change AOCI, Derivative Qualifying as Hedge, Excluded Component, Parent [Member] Cash flow hedges Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Cash flow hedges Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Defined benefit pension and OPEB plans Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Prior service credit/(cost)/Amortization of prior services cost/(credit) Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] Net gain/(loss)/Amortization of net loss Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] Curtailment (gain)/loss Accumulated Defined Benefit Plans Adjustment, Net Curtailment Gain (Loss) Attributable to Parent [Member] Accumulated Defined Benefit Plans Adjustment, Net Curtailment Gain (Loss) Attributable to Parent [Member] Settlement (gain)/loss Accumulated Defined Benefit Plans Adjustment, Net Settlement Gain (Loss) Attributable to Parent [Member] Accumulated Defined Benefit Plans Adjustment, Net Settlement Gain (Loss) Attributable to Parent [Member] Foreign exchange and other Accumulated Defined Benefit Plans Adjustment Foreign Exchange and Other Attributable to Parent [Member] Accumulated Defined Benefit Plans Adjustment Foreign Exchange and Other Attributable to Parent [Member] DVA on fair value option elected liabilities, net change Accumulated Gain (Loss), Fair Value Option Financial Liabilities, Attributable to Parent [Member] Accumulated Gain (Loss), Fair Value Option Financial Liabilities, Attributable to Parent [Member] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Other Income Other Income [Member] Other Expense Other Expense [Member] Comprehensive Income Loss [Line Items] Comprehensive Income Loss [Line Items] Components of Other Comprehensive Income/(Loss): Before And After Tax Changes Of Components Of Accumulated Other Comprehensive Income Loss Tables Abstract Schedule which may include the following: 1) the gross amount before-tax, amount of income tax expense or benefit, and the after-tax amount allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. Components of comprehensive income include: (1) foreign currency translation adjustments; (2) gains and losses on foreign currency transactions that are designated as, and are effective as, economic hedges of a net investment in a foreign entity; (3) gains and losses on intercompany foreign currency transactions that are of a long-term-investment nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements; (4) change in the market value of a futures contract that qualifies as a hedge of an asset reported at fair value; (5) unrealized holding gains and losses on available-for-sale securities and that resulting from transfers of debt securities from the held-to-maturity category to the available-for-sale category; (6) a net loss recognized as an additional pension liability not yet recognized as net periodic pension cost; and (7) the net gain or loss and net prior service cost or credit for pension plans and other postretirement benefit plans. Unrealized gains/(losses) on AFS securities: Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax [Abstract] Net unrealized gains/(losses) arising during the period/Translation, Pre-tax OCI, before Reclassifications, before Tax, Attributable to Parent Net unrealized gains/(losses) arising during the period/Translation, Tax effect Other Comprehensive Income (Loss) before Reclassifications, Tax Net unrealized gains/(losses) arising during the period/Translation, After-tax OCI, before Reclassifications, Net of Tax, Attributable to Parent Reclassification, Pre-tax Reclassification from AOCI, Current Period, before Tax, Attributable to Parent Reclassification, Tax effect Reclassification from AOCI, Current Period, Tax Reclassification, After-tax Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Net change, Pre-tax Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Net change, Tax effect Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Total other comprehensive income/(loss), after–tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Net pre-tax gain (loss) reclassified related to liquidation of legal entity Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax Noninterest-bearing and interest-bearing deposits Noninterest Bearing And Interest Bearing Deposits [Table Text Block] Noninterest-bearing and interest-bearing deposits. Time deposits one hundred thousand or more Time Deposits One Hundred Thousand Or More [Table Text Block] A table or schedule providing information pertaining to time deposits in excess of $100,000. Time deposits, by maturity Time Deposits By Maturity [Table Text Block] A table or schedule providing information pertaining to maturities of time deposits. Debt Security Category [Axis] Debt Security Category [Axis] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain] Credit-related losses recognized in income Credit related [Member] Credit related [Member] Securities gains and losses Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract] Realized gains Debt Securities, Available-for-sale, Realized Gain Realized losses Debt Securities, Available-for-sale, Realized Loss, Excluding Other-than-temporary Impairment OTTI losses Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale, Recognized in Earnings Net investment securities gains/(losses) Debt Securities, Available-for-sale, Realized Gain (Loss) Other than temporary impairment losses investments portion previously recognized in earnings intends to sell net Other Than Temporary Impairment Losses Investments Portion Previously Recognized In Earnings Intends To Sell Net The amount of excluded realized losses that were previously reported as other than temporarily impaired due to the intention to sell. Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Mortgage-backed securities, U.S. GSEs and government agencies US Government Corporations and Agencies Securities [Member] Mortgage-backed securities, Residential - nonagency Mortgage-backed securities, Commercial - nonagency Total debt and equity instruments Debt and Equity Instruments [Member] Debt and equity instruments such as securities, certificates of deposit, bankers' acceptances, commercial paper, loans, physical commodities and other financial instruments, excluding derivative instruments. Total debt instruments U.S. Treasury, GSEs and government agencies Loans Trading Loans [Member] Loans carried as trading assets that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time). Unrealized holding gains and losses for trading loans are included in earnings. Asset-backed securities Asset Backed Securities Trading Account [Member] This category includes information about securities that are primarily serviced by the cash flows of a discrete pool of receivables or other financial assets (such as mortgage loans or credit-card receivables) and are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time). Unrealized holding gains and losses for trading account asset-based securities are included in earnings. Equity securities Other Other Debt and Equity Instruments [Member] Represents other types of debt and equity instruments. Total available-for-sale securities Available-for-sale Securities [Member] Available-for-sale securities, Mortgage-backed securities Mortgage-backed Available-for-sale Securities [Member] Mortgage-backed Available-for-sale Securities [Member] Available-for-sale securities, Asset-backed securities Asset backed Security Available for Sale [Member] Asset-backed security, available-for-sale. Loans Loans Receivable, Not-for-Trading [Member] Loans Receivable, Not-for-Trading [Member] Mortgage servicing rights Servicing Contracts [Member] Other assets Other Assets [Member] Equity Equity Contract [Member] Commodity Commodity Contract [Member] Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservabe Input Reconciliation [Domain] Deposits Deposits [Member] Short-term borrowings Borrowings [Member] Accounts payable and other liabilities Accounts payable and other liabilities [Member] Accounts payable and other liabilities. Beneficial interests issued by consolidated VIEs Long-term debt Long-term Debt [Member] DVA for fair value option elected liabilities Debit Valuation Adjustment For Fair Value Option Financial Liabilities [Member] Debit Valuation Adjustment For Fair Value Option Financial Liabilities [Member] Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Changes in level 3 recurring fair value measurements [Abstract] Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] Assets: Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair value, beginning balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Total realized/unrealized gains/(losses) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Realized and Unrealized Gains (Losses) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Realized and Unrealized Gains (Losses) Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Transfers into level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Transfers (out of) level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Fair value, ending balance Change in unrealized gains/(losses) related to financial instruments held Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) Net derivative receivables: Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] Beginning balance Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Total realized/unrealized gains/(losses) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Net Derivative Asset (Liability), Realized and Unrealized Gains (Losses) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Net Derivative Asset (Liability), Realized and Unrealized Gains (Losses) 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 Settlements Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements Transfers into level 3 Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers into Level 3 Transfers (out of) level 3 Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers out of Level 3 Ending balance Change in unrealized gains/(losses) related to financial instruments held Fair Value, Net Derivative Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss) Liabilities: Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Beginning balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Total realized/unrealized (gains)/losses Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Realized and Unrealized Gains (Losses) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Realized and Unrealized Gains (Losses) Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Transfers into level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3 Transfers (out of) level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 Ending balance Change in unrealized gains/(losses) related to financials instruments held Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss) Level 3 Rollforward Supplemental Data [Abstract] Level 3 Rollforward Supplemental Data [Abstract] Level 3 assets as a percentage of total firm assets at fair value Level Three Assets As Percentage Of Total Firm Assets At Fair Value Level Three Assets As Percentage Of Total Firm Assets At Fair Value Level 3 liabilities as a percentage of total firm liabilities at fair value Level Three Liabilities As Percentage Of Total Firm Liabilities At Fair Value Level 3 liabilities as a percentage of total firm liabilities at fair value. Unrealized gains/(losses) on liabilities recorded in OCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss) Realized gains/(losses) on assets recorded in income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Unrealized gains/(losses) on assets recorded in OCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Fair Value Option [Abstract] Fair Value Option. Fair Value Option, Disclosures [Table] Fair Value Option, Disclosures [Table] 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] Contractual principal outstanding Reported Value Measurement [Member] Fair value Estimate of Fair Value Measurement [Member] Fair value over/(under) contractual principal outstanding Changes Measurement [Member] Loans reported as trading assets Loans Loans [Member] Principal-protected debt Principal Protected Debt [Member] Principal Protected Debt. Nonprincipal-protected debt Non Principal Protected Debt [Member] Non Principal Protected Debt. Lending-related commitments, fair value option elected Letters of Credit Hedged by Derivative Transactions, Amount Elected at Fair Value [Member] The amount elected at fair value of letters of credit hedged by derivative transactions and managed on a market risk basis. Fair Value, Option, Quantitative Disclosures [Line Items] Fair Value, Option, Quantitative Disclosures [Line Items] Difference between aggregate fair value and aggregate remaining contractual principal balance outstanding Fair Value, Option, Aggregate Differences [Abstract] Loans Fair Value, Option, Loans Held as Assets [Abstract] Nonaccrual loans Fair Value, Option, Loans Held as Assets, Aggregate Amount in Nonaccrual Status Nonaccrual loans, Fair value over/(under) contractual principal outstanding Fair Value, Option, Loans Held as Assets, Aggregate Amount in Nonaccrual Status, Aggregated Difference All other performing loans Fair Value Options Other Performing Loans Fair Value Options Other Performing Loans. Total loans Fair Value Options Loans Held As Assets Represents the portion of loans held as assets for which the fair value option has been elected, valued at fair value. Long-term debt Other Long-term Debt [Abstract] Long-term debt, Fair value over/(under) contractual principal outstanding Fair Value, Option, Aggregate Differences, Long-term Debt Instruments Long-term beneficial interests Long Term Beneficial Interests Abstract Long term beneficial interests. Long-term beneficial interests Long Term Beneficial Interests Long Term Beneficial Interests. Performing loans, ninety days or more past due Fair Value, Option, Loans Held as Assets, Aggregate Difference Contractual amount of lending-related commitments Guarantor Obligations, Maximum Exposure, Undiscounted Lending-related commitments, fair value Guarantor Obligations, Net of Other Commitments, Current Carrying Value Guarantor Obligations, Net of Other Commitments, Current Carrying Value Earnings Per Share [Abstract] Earnings Per Share Earnings Per Share [Text Block] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Translation adjustments, net of hedges Fair value hedges DVA on fair value option elected liabilities Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Beginning balance Stockholders' Equity Attributable to Parent Cumulative effect of change in accounting principles Cumulative Effect of New Accounting Principle in Period of Adoption Net change Ending balance Non-U.S. Foreign Plan [Member] Accrued receivables Accrued Receivables [Member] Accrued Receivables. Accrued liabilities Accrued Liabilities [Member] Retirement Plan Funding Status [Axis] Retirement Plan Funding Status [Axis] Retirement Plan Funding Status [Domain] Retirement Plan Funding Status [Domain] Overfunded Plan Overfunded Plan [Member] Underfunded Plan Underfunded Plan [Member] Defined benefit pension plan, estimated future employer contributions in next fiscal year Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year Defined benefit plan, contractually required future employer contributions in next fiscal year Defined Benefit Plans, Contractually Required Future Employer Contributions in Next Fiscal Year Defined Benefit Plans, Contractually Required Future Employer Contributions in Next Fiscal Year Change in benefit obligation Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Benefit obligation, beginning of year Defined Benefit Plan, Benefit Obligation Benefits earned during the year Defined Benefit Plan, Service Cost Interest cost on benefit obligations Defined Benefit Plan, Interest Cost Plan amendments Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment Plan curtailment Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment Employee contributions Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant Net gain/(loss) Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) Benefits paid Defined Benefit Plan, Benefit Obligation, Benefits Paid Plan settlements Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement Foreign exchange impact and other Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss) Benefit obligation, end of year Change in plan assets Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Fair value of plan assets, beginning of year Actual return on plan assets Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) Firm contributions Defined Benefit Plan, Plan Assets, Contributions by Employer Employee contributions Defined Benefit Plan, Plan Assets, Contributions by Plan Participant Benefits paid Defined Benefit Plan, Plan Assets, Benefits Paid Plan settlements Defined Benefit Plan, Plan Assets, Payment for Settlement Foreign exchange impact and other Defined Benefit Plan, Plan Assets, Foreign Currency Translation Gain (Loss) Fair value of plan assets, end of year Net funded status Defined Benefit Plan, Funded (Unfunded) Status of Plan Accumulated benefit obligation, end of year Defined Benefit Plan, Accumulated Benefit Obligation Pretax pension and OPEB amounts recorded in AOCI Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract] Net gain/(loss) Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax Prior service credit/(cost) Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax Accumulated other comprehensive income/(loss), pretax, end of year Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax Weighted-average actuarial assumptions used to determine benefit obligations 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 Interest crediting rate Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Weighted-Average Interest Crediting Rate Health care cost trend rate: Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract] Assumed for next year Defined Benefit Plan, Health Care Cost Trend Rate Used to Determine Benefit Obligation Assumed for Next Fiscal Year The assumed health care cost trend rate for the next year used to measure the benefit obligation. This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status. Ultimate Defined Benefit Plan, Ultimate Health Care Cost Trend Rate Year when rate will reach ultimate Defined Benefit Plan, Year That Rate Reaches Ultimate Trend Rate, Used To Determine Benefit Obligation Defined Benefit Plan, Year That Rate Reaches Ultimate Trend Rate, Used To Determine Benefit Obligation Funded status of plan - supplemental information Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract] Defined benefit plans, amounts not measured at fair value Defined Benefit Plan Amounts Not Measured At Fair Value Defined Benefit Plan Amounts Not Measured At Fair Value Plans with projected benefit obligation exceeding plan assets, projected benefit obligation Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation Plans with projected benefit obligation exceeding plan assets, fair value of plan assets Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets Plans with accumulated benefit obligation exceeding plan assets, accumulated benefit obligation Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation Plans with accumulated benefit obligation exceeding plan assets, fair value of plan assets Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Plan Assets Long-term Debt Long-term Debt [Text Block] Accounts Payable and Accrued Liabilities [Abstract] Brokerage payables Broker-Dealer, Payable to Other Broker-Dealer and Clearing Organization Other payables and liabilities Accounts Payable and Other Accrued Liabilities Total accounts payable and other liabilities Accounts Payable and Accrued Liabilities Credit card rewards liability Contract with Customer, Refund Liability, Current Condensed Financial Information Disclosure [Abstract] Condensed Financial Statements [Table] Condensed Financial Statements [Table] Condensed Financial Statements, Captions [Line Items] Condensed Financial Statements, Captions [Line Items] Statements of cash flows Statement of Cash Flows [Abstract] Operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Net Income (Loss) Attributable to Parent Less: Net income of subsidiaries and affiliates Net Income of Subsidiaries and Affiliates Net income of the subsidiaries and affiliates associated with a parent company. Parent company net loss Net Income (Loss) Attributable to Parent Alone, Excluding Dividends and Income from Subsidiaries and Affiliates The net income/(loss) attributable to a parent company alone, excluding dividends and income from subsidiaries and affiliates. Cash dividends from subsidiaries and affiliates Cash Dividends from Subsidiaries and Affiliates Cash dividends psid to parent company from subsidiaries and affiliates. Other operating adjustments Other Operating Activities, Cash Flow Statement 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] Other changes in loans, net Proceeds from Other Loans and Leases Proceeds from Other Loans and Leases Advances to and investments in subsidiaries and affiliates, net Net Change In Advances To and Investments In Subsidiaries The cash inflow/(outflow) associated with the combined net change in (i) advances to, and receivables from, subsidiaries and affiliates of a parent company; and (ii) investments (at equity) in subsidiaries and affiliates of a parent company. All 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 Financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Net change in: Borrowings from subsidiaries and affiliates Net Borrowings From Subsidiaries The cash inflow/(outflow) associated with the net change in borrowings from subsidiaries and affiliates of a parent company. Net change in: Short-term borrowings Repayments of Short-term Debt Proceeds from long-term borrowings Proceeds from Issuance of Long-term Debt and Capital Securities, Net Payments of long-term borrowings Repayment of Long-term Debt, Long-term Lease Obligation, and Capital Security Proceeds from issuance of preferred stock Proceeds from Issuance of Preferred Stock and Preference Stock Redemption of preferred stock Payments for Repurchase of Redeemable Preferred Stock Treasury stock repurchased Payments for Repurchase of Common Stock Dividends paid Payments of Dividends All other financing activities, net Proceeds from (Payments for) Other Financing Activities Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Net increase/(decrease) in cash and due from banks and deposits with banks Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash and due from banks and deposits with banks at the beginning of the period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and due from banks and deposits with banks at the end of the period Cash interest paid Interest Paid, Excluding Capitalized Interest, Operating Activities Cash income taxes paid, net Income Taxes Paid, Net Schedule of significant types of variable interest entities by business segment Schedule of Significant Types of Variable Interest Entities by Business Segment [Table Text Block] Schedule of Significant Types of Variable Interest Entities by Business Segment [Table Text Block] Firm-sponsored mortgage and other consumer securitization trusts Firm Sponsored Mortgage And Other Consumer Securitization Trusts [Table Text Block] Firm sponsored mortgage and other consumer securitization trusts broken-out by loan type as well as by principal amount outstanding. Also details the amount of the Firm's interest in securitized assets in nonconsolidated VIEs. Schedule of re-securitizations Schedule of Variable Interest Entities [Table Text Block] Information on assets and liabilities related to VIEs that are consolidated by the Firm Information On Assets And Liabilities Related To V I Es That Are Consolidated By Firm [Table Text Block] Detailed item-by-item disclosures of variable interest entities and related information according to the following classifications: (1) VIEs consolidated because the registrant is the primary beneficiary. Securitization activities Securitization Activities [Table Text Block] Securitization activities. Summary of loan sale activities Summary Of Loan Sale Activities [Table Text Block] A table summarizing loan sale activities related to mortgage loans sold during the reporting period. The loan may be sold to the Government National Mortgage Association (Ginnie Mae), the Federal National Mortgage Association (Fannie Mae) and the Federal Home Loan Mortgage Corporation (Freddie Mac).This table excludes loans sold related to securitization activities. Schedule of loans repurchased and options to repurchase delinquent loans Schedule of Securities Repurchased And Option to Repurchase Delinquent Securities [Table Text Block] Schedule of Securities Repurchased And Option to Repurchase Delinquent Securities [Table Text Block] Information about delinquencies, net charge-offs, and components of off-balance sheet securitized financial assets Information About Delinquencies, Net Charge Offs And Components Of Off Balance Sheet Securitized Financial Assets [Table Text Block] Information about delinquencies, net charge-offs and components of off-balance sheet securitized financial assets. Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Nonrecurring Fair Value, Nonrecurring [Member] Loans Loans Receivable [Member] Residential mortgage Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Broker price opinion Broker Price Opinion Valuation Technique [Member] Broker price opinion, valuation technique used to measure fair value. Weighted average Weighted Average [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] Total assets measured at fair value on a nonrecurring basis Assets, Fair Value Disclosure Equity securities without readily determinable fair values Fair value inputs, liquidation value discount Fair Value Inputs, Liquidation Value Discount Discount based upon experience with actual liquidation values. Liabilities measured at fair value on a nonrecurring basis Financial and Nonfinancial Liabilities, Fair Value Disclosure Total nonrecurring fair value gains/(losses) Fair Value, Option, Changes in Fair Value, Gain (Loss) Net gains as a result of measurement alternative Leases [Abstract] Schedule of information related to operating leases Lease, Cost [Table Text Block] Schedule of future payments under operating leases Lessee, Operating Lease, Liability, Maturity [Table Text Block] Schedule of carrying value of assets subject to leases Lessor, Operating Lease, Carrying Value of Assets Subject to Leases [Table Text Block] Lessor, Operating Lease, Carrying Value of Assets Subject to Leases [Table Text Block] Schedule of operating lease income and related depreciation expense Operating Lease, Lease Income [Table Text Block] Schedule of future receipts under operating leases Lessor, Operating Lease, Payments to be Received, Maturity [Table Text Block] Cash and Cash Equivalents [Abstract] Restrictions on Cash and Cash Equivalents [Table] Restrictions on Cash and Cash Equivalents [Table] Restricted Cash and Cash Equivalents [Axis] Restricted Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Cash reserves – Federal Reserve Banks Cash Reserves, Federal Reserve Bank [Member] Cash Reserves, Federal Reserve Bank [Member] Segregated for the benefit of securities and cleared derivative customers Segregated for Benefit of Securities and Cleared Derivative Customers [Member] Segregated for Benefit of Securities and Cleared Derivative Customers [Member] Cash reserves at non-U.S. central banks and held for other general purposes Cash Reserves, Foreign Central Banks and Other [Member] Cash Reserves, Foreign Central Banks and Other [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Deposits with banks Interest-bearing Deposits [Member] Cash and due from banks Cash And Due From Banks [Member] Cash And Due From Banks [Member] Restricted Cash and Cash Equivalents Items [Line Items] Restricted Cash and Cash Equivalents Items [Line Items] Total restricted cash Restricted Cash and Cash Equivalents Cash and securities pledged with clearing organizations for benefit of customers Cash And Securities Pledged With Clearing Organizations For The Benefit Of Customers Cash and securities pledged with clearing organizations for the benefit of customers. Fair value of securities restricted in relation to customer activity Securities Reserve Deposit Required and Made Restrictions on Cash and Intercompany Funds Transfers [Table] Restrictions on Cash and Intercompany Funds Transfers [Table] A table for the disclosure of: (1) Cash and cash items which are restricted as to withdrawal or usage as well as the provisions of any restrictions. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. (2) Disclosure of cash and securities segregated in compliance with regulations (such as cash deposited in a special reserve account for the exclusive benefit of customers). (3) Disclosure of all information regarding a banking or savings institution's compliance during the year with (a) federal and state laws and regulations relative to dividend restrictions and (b) federal laws and regulations relative to insider loans. (4) Disclosure of the amount of reserve balances held at various Federal Reserve Banks. Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Bank and Bank Holding Company Subsidiaries Bank and Bank Holding Company Subsidiaries [Member] Bank and Bank Holding Company Subsidiaries [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Restrictions on Cash and Intercompany Funds Transfers [Line Items] Restrictions on Cash and Intercompany Funds Transfers [Line Items] RestrictionsOnCashAndIntercompanyFundsTransfers [Line Items] Disclosure of Restrictions on Dividends, Loans and Advances Disclosure [Abstract] Disclosure of Restrictions on Dividends, Loans and Advances Disclosure [Abstract] Percentage of total capital loans limited to Federal Restriction on Secured Borrowings from Subsidiaries, Per Loan, Portion of Subsidiary Total Capital, Percentage Federal law imposes a restriction which prohibits the parent entity and certain of its affiliates from borrowing from banking subsidiaries unless the loans are secured in specified amounts. This concept holds the general limit for such a secured loan as a percentage of the banking subsidiary's total capital. Percentage of total capital (limited to) for aggregate covered transactions Federal Restriction on Secured Borrowings from Subsidiaries, All Loans, Portion of Subsidiary Total Capital, Percentage Federal law imposes a restriction which prohibits the parent entity and certain of its affilliates from borrowing from banking subsidiaries unless the loans are secured in specified amounts. This concept holds the limit for the aggregate amount of all such secured loans as a percentage of the banking subsidiary's total capital. Aggregate dividends payable Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval Industry Sector [Axis] Industry Sector [Axis] Industry Sector [Domain] Industry Sector [Domain] Real estate Real Estate Sector [Member] Criticized Criticized [Member] Criticized nonaccrual Criticized Nonaccrual [Member] Credit rating classification that is used to describe the credit risk of loans that connote criticized nonperforming, which is a subcategory of noninvestment grade criticized. Criticized grade ratings generally range from the equivalent of "CCC+" to "Caa1 and lower", with criticized nonperforming loans representing those for which the accrual of interest is suspended. Commercial construction and development Wholesale Real Estate Commercial Construction and Development [Member] Loans that are collateralized by commerical construction loans, which are a subcategory of Wholesale Real Estate Loans. Multifamily Multifamily [Member] Other Commercial Wholesale Real Estate Commercial Lessors [Member] Loans that are collateralized by commercial lessors, which are a subcategory of Wholesale Real Estate Loans. Retained % of total criticized to total real estate retained loans Percentage of Criticized Loans to Total Retained Loans Percentage of total criticized to total retained loans. % of criticized nonaccrual loans to total real estate retained loans Percentage of Loans on Nonaccrual Status to Total Retained Loans Percentage of nonaccrual loans to total retained loans. Debt securities Defined Benefit Plan, Debt Security [Member] Real estate Defined Benefit Plan, Real Estate [Member] Alternatives Alternative Investments [Member] Alternative Investments [Member] Investments sponsored or managed by affiliates Defined Benefit Plan Amount Of Plan Investments Held In Funds That Are Sponsored Or Managed By Affiliates Of Entity For defined benefit and OPEB plans, amount of plan investments held in funds that are sponsored or managed by affiliates of the entity. Weighted-average asset allocation of the fair values of total plan assets Defined Benefit Plan, Plan Assets, Allocations [Abstract] Asset class Asset category Abstract Asset category. Asset Allocation Defined Benefit Plan, Plan Assets, Target Allocation, Percentage % of plan assets Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage Total residential real estate – excluding PCI Real Estate Loan [Member] Residential mortgage 30–149 days past due 150 or more days past due 30 or more days past due Financing Receivables, Greater than 30 Days Past Due [Member] Retained loans that are 30 days or more past due. 90 or more days past due Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Loans Insured or Guaranteed by Government Authorities [Axis] Loans Insured or Guaranteed by Government Authorities [Axis] Loans Insured or Guaranteed by Government Authorities [Domain] Loans Insured or Guaranteed by Government Authorities [Domain] U.S. government-guaranteed US Government Agency Insured Loans [Member] Less than 80% and refreshed FICO scores No FICO/LTV available Texas TEXAS Colorado COLORADO % of 30 plus days past due to total retained loans Percentage of Loans Thirty Plus Days Past Due to Total Retained Loans This item represents the percentage of loans 30 plus days past due as compared to total retained loans. 90 or more days past due and government guaranteed Nonaccrual loans Financing Receivable, Nonaccrual Noninterest Revenue and Noninterest Expense Noninterest Revenue and Expense [Text Block] Noninterest Revenue and Expense [Text Block] Cash Flow Hedging Cash Flow Hedging [Member] Derivatives gains/(losses) recorded in income and other comprehensive income/(loss) Cash flow hedge gains and losses Abstract Cash flow hedge gains and losses. Amounts reclassified from AOCI to income Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Amounts recorded in OCI Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Total change in OCI for period Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax Amounts reclassified from AOCI to income Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net Amounts recorded in OCI Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Total change in OCI for period Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax Recognition of net losses related to cash flow hedges in Income Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months Maximum length of time hedged in forecasted transactions, terminated cash flow hedges Maximum Length of Time Hedged in Cash Flow Hedge, Terminated Cash Flow Hedge For a terminated cash flow hedge, maximum length of time over which the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Maximum length of time hedged in forecasted transactions, open cash flow hedges Maximum Length of Time Hedged in Cash Flow Hedge, Open Cash Flow Hedge For an open cash flow hedge, maximum length of time over which the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Loans Loans, Notes, Trade and Other Receivables, Excluding Allowance for Credit Losses [Text Block] Preferred Stock Preferred Stock [Text Block] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Commercial Banking Commercial Banking [Member] Commercial Banking. Asset & Wealth Management Asset and Wealth Management Segment [Member] Asset and Wealth Management Segment [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Number of major reportable business segments Number of Reportable Segments Number of primary client segments Number of Primary Client Segments Number of Primary Client Segments AWM client assets Assets Under Supervision, Fair Value The value of assets an investment adviser supervises on behalf of investors. Assets under supervision also represent assets under management as well as custody, brokerage, administration and deposit accounts. Allowance for Credit Losses Allowance for Credit Losses [Text Block] Time Deposits, by Maturity [Table] Time Deposits, by Maturity [Table] A table or schedule providing information pertaining to maturities of time deposits. Geographic Areas [Axis] Non-U.S. Non-US [Member] Time Deposits, by Maturity [Line Items] Time Deposits, by Maturity [Line Items] Time deposits by maturity. Maturities of interest bearing time deposits Time Deposits, Fiscal Year Maturity [Abstract] 2020 Time Deposit Maturities, Next Twelve Months 2021 Time Deposit Maturities, Year Two 2022 Time Deposit Maturities, Year Three 2023 Time Deposit Maturities, Year Four 2024 Time Deposit Maturities, Year Five After 5 years Time Deposit Maturities, after Year Five Total Time Deposits Schedule of long-term debt instruments 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] Schedule of Fair Value, Off-balance Sheet Risks [Table] Schedule of Fair Value, Off-balance Sheet Risks [Table] Financial Instruments [Domain] Standby letters of credit and other financial guarantees Standby Letters of Credit, and Other Financial Guarantees [Member] An irrevocable undertaking (typically by a financial institution) to guarantee payment of a specified financial obligation, and other financial guarantees. Other letters of credit Other Letters of Credit [Member] For other letters of credit, an irrevocable undertaking (typically by a financial institution) to guarantee payment of a specified financial obligation. Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] Standby letters of credit and other financial guarantees and other letters of credit [Abstract] Standby letters of credit and other financial guarantees and other letters of credit [Abstract] Standby letters of credit and other financial guarantees and other letters of credit. Investment-grade Standby Letters of Credit and Other Financial Guarantees, Internal Credit Rating, Investment Grade Standby letters of credit and other financial guarantees which are rated as investment-grade per company defined internal payment/performance risk groupings used for managing risk. Noninvestment-grade Standby Letters of Credit and Other Financial Guarantees, Internal Credit Rating, Non Investment Grade Standby letters of credit and other financial guarantees which are rated as noninvestment-grade per company defined internal payment/performance risk groupings used for managing risk. Allowance for lending-related commitments SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount Total carrying value Off Balance Sheet Lending Related Financial Instruments Carrying Value The carrying value of off-balance sheet lending-related financial instruments (e.g., commitments and guarantees), which represents the allowance for lending-related commitments and the guarantee liability. Commitments with collateral Standby Letters of Credit, Supported by Collateral The contractual amount of standby letters of credit supported by collateral. Commitments with collateral Other Letters of Credit, Supported by Collateral The contractual amount of others letters of credit supported by collateral. Unrecognized tax benefits that would impact effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Amount of potential increase or decrease in gross balance of unrecognized tax benefits Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit Reconciliation of the beginning and ending amount of unrecognized tax benefits Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Balance at January 1, Unrecognized Tax Benefits Increases based on tax positions related to the current period Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Increases based on tax positions related to prior periods Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Decreases based on tax positions related to prior periods Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Decreases related to cash settlements with taxing authorities Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Balance at December 31, Income tax expense, penalties and interest expense Income Tax Examination, Penalties and Interest Expense [Abstract] Penalties and interest expense/(benefit) Income Tax Examination, Penalties and Interest Expense Penalties and interest accrued Income Tax Examination, Penalties and Interest Accrued Income Taxes Income Tax Disclosure [Text Block] Derivative [Table] Derivative [Table] Interest rate contracts Swaps Interest Rate Swap [Member] Futures and forwards Interest Rate Future and Forward [Member] Interest Rate Future and Forward [Member] Options Interest Rate Option [Member] Interest Rate Option [Member] Net credit derivatives Foreign exchange contracts Cross-currency swaps Currency Swap [Member] Spot, futures and forwards Foreign Exchange Spot, Future and Forward [Member] Foreign Exchange Spot, Future and Forward [Member] Options Foreign Exchange Option [Member] Equity contracts Swaps Equity Swap [Member] Futures and forwards Equity Future and Forward [Member] Equity Future and Forward [Member] Options Equity Option [Member] Commodity contracts Swaps Commodity Swap [Member] Commodity Swap [Member] Spot, futures and forwards Commodity Spot, Future and Forward [Member] Commodity Spot, Future and Forward [Member] Options Commodity Option [Member] Position [Axis] Position [Axis] Position [Domain] Position [Domain] Written options Short [Member] Purchased options Long [Member] Derivative [Line Items] Derivative [Line Items] Notional amount of derivative contracts outstanding [Abstract] Notional Disclosures [Abstract] Derivative notional amounts Derivative, Notional Amount Auto Automobile Loan [Member] Consumer & Business Banking Consumer Business Banking Loans [Member] Class of financing receivables related to consumer business banking financing receivables. Prime mortgage Net income 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 Depreciation and amortization Depreciation, Amortization and Accretion, Net Deferred tax expense Deferred Income Tax Expense (Benefit) Other Other Noncash Income (Expense) Originations and purchases of loans held-for-sale Payments for Origination and Purchases of Loans Held-for-sale Proceeds from sales, securitizations and paydowns of loans held-for-sale Proceeds From Sales Securitizations And Paydowns Of Loans Held For Sale The cash inflow resulting from the sale of loans classified as held-for-sale, including proceeds from loans sold through securitization. Net change in: Increase (Decrease) in Operating Capital [Abstract] Trading assets Increase (Decrease) in Financial Instruments Used in Operating Activities Securities borrowed Increase (Decrease) in Cash Collateral for Borrowed Securities Accrued interest and accounts receivable Increase Decrease In Accrued Interests And Accounts Receivable The net change during the reporting period in accrued interest income and accounts receivable. Other assets Increase (Decrease) in Prepaid Expense and Other Assets Trading liabilities Increase (Decrease) in Trading Liabilities Accounts payable and other liabilities Increase Decrease In Accounts Payable And Other Liabilities The net change during the reporting period in accounts payable, accrued expenses and other liabilities. Other operating adjustments Net change in: Additional Cash Flow Elements, Investing Activities [Abstract] Federal funds sold and securities purchased under resale agreements Proceeds from (Payments for) Federal Funds Sold and Securities Purchased under Agreements to Resell, Net Held-to-maturity 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 Available-for-sale securities: Proceeds from Sale and Maturity of Debt Securities, Available-for-sale [Abstract] Proceeds from paydowns and maturities Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Proceeds from sales Proceeds from Sale of Debt Securities, Available-for-sale Purchases Payments to Acquire Debt Securities, Available-for-sale Proceeds from sales and securitizations of loans held-for-investment Proceeds from Sale of Loans and Leases Held-for-investment Other changes in loans, net Payments for Other Loans and Leases Payments for Other Loans and Leases Net change in: Additional Cash Flow Elements, Financing Activities [Abstract] Deposits Increase (Decrease) in Deposits Federal funds purchased and securities loaned or sold under repurchase agreements Increase (Decrease) in Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Net Short-term borrowings Short-term borrowings Proceeds from Short-term Debt Beneficial interests issued by consolidated VIEs Increase Decrease in Beneficial Interests Issued by Consolidated Variable Interest Entities Beneficial interests issued by consolidated variable interest entities. Proceeds from long-term borrowings Payments of long-term borrowings Proceeds from issuance of preferred stock Dividends paid All other financing activities, net Effect of exchange rate changes on cash and due from banks and deposits with banks Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents 2020 Lessor, Operating Lease, Payments to be Received, Next Twelve Months 2021 Lessor, Operating Lease, Payments to be Received, Two Years 2022 Lessor, Operating Lease, Payments to be Received, Three Years 2023 Lessor, Operating Lease, Payments to be Received, Four Years 2024 Lessor, Operating Lease, Payments to be Received, Five Years After 2024 Lessor, Operating Lease, Payments to be Received, Thereafter Total future minimum lease receipts Lessor, Operating Lease, Payments to be Received Defined benefit pension and OPEB before Medicare Defined Benefit Plan, Expected Future Benefit Payment [Abstract] 2020 Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months 2021 Defined Benefit Plan, Expected Future Benefit Payment, Year Two 2022 Defined Benefit Plan, Expected Future Benefit Payment, Year Three 2023 Defined Benefit Plan, Expected Future Benefit Payment, Year Four 2024 Defined Benefit Plan, Expected Future Benefit Payment, Year Five Years 2025–2029 Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter Medicare Part D subsidy Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt [Abstract] 2020 Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt, Next Twelve Months 2021 Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt, Year Two 2022 Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt, Year Three 2023 Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt, Year Four 2024 Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt, Year Five Years 2025–2029 Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt, after Year Five Interest Income (Expense), Net [Abstract] Details of interest income and interest expense Interest Income and Interest Expense Disclosure [Table Text Block] Pension and Other Postretirement Employee Benefit Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Reconciliation of the applicable statutory U.S. income tax rate to the effective tax rate Effective Income Tax Rate Reconciliation, Percent [Abstract] Statutory U.S. federal tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Increase/(decrease) in tax rate resulting from: Increase Decrease in Tax Rate Resulting From [Abstract] Increase Decrease in Tax Rate Resulting From [Abstract] U.S. state and local income taxes, net of U.S. federal income tax benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Tax-exempt income Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent Non-U.S. earnings Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent Business tax credits Effective Income Tax Rate Reconciliation, Tax Credit, Other, Percent Tax audit resolutions Effective Income Tax Rate Reconciliation, Tax Settlement, Percent Impact of the TCJA Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Percent Other, net Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Effective tax rate Effective Income Tax Rate Reconciliation, Percent Reconciliation of effective income tax rate, supplemental information [Abstract] Reconciliation Of Effective Income Tax Rate, Supplemental Information [Abstract] Reconciliation Of Effective Income Tax Rate, Supplemental Information [Abstract] Net tax benefit recorded Tax Cuts and Jobs Act, Income Tax Expense (Benefit) Income tax expense, estimated impact of TCJA enactment Tax Cuts and Jobs Act, Incomplete Accounting, Provisional Income Tax Expense (Benefit) Estimated income tax expense from transition tax on accumulated earnings of controlled foreign corporations Tax Cuts and Jobs Act, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Income Tax Expense Estimated income tax benefit as a result of TCJA remeasurement Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Provisional Income Tax Expense (Benefit) Non-U.S. U.S. Commercial and industrial Commercial and Industrial Sector [Member] Financial institutions Financial Services Sector [Member] Governments & Agencies Government Sector [Member] Other Wholesale Other [Member] Class of financing receivables related to special purpose entities, private bank clients, and other wholesale industries. Investment-grade Internal Investment Grade [Member] Total noninvestment- grade Internal Noninvestment Grade [Member] Noncriticized Pass [Member] Criticized performing Criticized Performing [Member] Credit rating classification that is used to describe the credit risk of loans that connote criticized performing, which is a subcategory of noninvestment grade criticized. Criticized grade ratings generally range from the equivalent of "CCC+" to "Caa1 and lower", with criticized performing loans representing those for which interest is still being accrued. Current and less than 30 days past due and still accruing 30–89 days past due and still accruing Financing Receivables, 30 to 89 Days Past Due [Member] Retained loans that are 30 to 89 days past due and still accruing interest. 90 or more days past due and still accruing Financing Receivables, 90 or More Days Past Due, and Still Accruing [Member] Retained loans that are 90 days or more past due and still accruing interest. % of total criticized to total retained loans % of criticized nonaccrual to total retained loans Net charge-offs/(recoveries) Net Charge-Offs Net Charge Offs. % of net charge-offs/(recoveries) to end-of-period retained loans Percentage of Net Charge-Offs to Total Retained Loans Percentage of net charge-offs to retained loans. Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Statement of Comprehensive Income [Abstract] Other comprehensive income/(loss), after–tax Other Comprehensive Income (Loss), Net of Tax [Abstract] Unrealized gains/(losses) on investment securities Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Translation adjustments, net of hedges Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Fair value hedges Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), after Adjustments and Tax, Parent Cash flow hedges Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent Cash flow hedges Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent Defined benefit pension and OPEB plans Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent DVA on fair value option elected liabilities Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, after Tax and Reclassification Adjustment, Attributable to Parent Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Securities Financing Transactions Disclosures [Abstract] Securities Financing Activities Repurchase Agreements, Resale Agreements, Securities Borrowed, and Securities Loaned Disclosure [Text Block] Schedule of earnings per share basic and diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Litigation [Abstract] Litigation. Litigation Legal Matters and Contingencies [Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill impairment Goodwill, Impairment Loss Total HELOCs Home Equity Line of Credit [Member] HELOANs Home Equity Loan [Member] Lien Category [Axis] Lien Category [Axis] Lien Category [Domain] Lien Category [Domain] Senior lien Senior Lien [Member] Junior lien Junior Lien [Member] Percentage of senior liens to total financing receivables Percentage of Senior Liens to Total Financing Receivables The percentage of the financing receivables that consists of senior liens. Loans Total 30 plus day delinquency rate Open-ended revolving period Home Equity Line of Credit, Open-Ended Revolving Period In general, the period of time that home equity lines of credit are open-ended revolving loans. Credit card Credit Card Receivable [Member] Held-for-sale Loans Receivable Held-for-sale, Net, Not Part of Disposal Group At fair value Loans Receivable, Fair Value Disclosure Total Loans Receivable, Net of Deferred Income Loans Receivable, Net of Deferred Income Banking and Thrift [Abstract] Regulatory Capital Regulatory Capital Requirements under Banking Regulations [Text Block] Deposits [Table] Deposits [Table] Deposits [Line Items] Deposits [Line Items] Noninterest-bearing and interest-bearing deposits [Abstract] Deposits, Interest-bearing and Noninterest-bearing, Alternative [Abstract] U.S. offices Deposits, Domestic [Abstract] Noninterest-bearing (included $22,637 and $17,204 at fair value) Noninterest-bearing Deposit Liabilities, Domestic Interest-bearing (included $2,534 and $2,487 at fair value) Interest-bearing Deposit Liabilities, Domestic Interest-bearing, fair value Interest-bearing Domestic Deposit, Time Deposits Total deposits in U.S. offices Deposits, Domestic Non-U.S. offices Deposits, Foreign [Abstract] Noninterest-bearing (included $1,980 and $2,367 at fair value) Noninterest-bearing Deposit Liabilities, Foreign Interest-bearing (included $1,438 and $1,159 at fair value) Interest-bearing Deposit Liabilities, Foreign Interest-bearing, fair value Interest-bearing Foreign Deposit, Time Deposits Total deposits in non-U.S. offices Deposits, Foreign Total deposits Deposits Loan portfolio segment descriptions Loan Portfolio Segment Descriptions [Table Text Block] Descriptive tabular information of loan portfolio segments. Schedule of loans by portfolio segment Schedule of Loans by Portfolio Segment and Class [Table Text Block] Schedule of loans by portfolio segment, and class, where applicable. Schedule of retained loans purchased, sold and reclassified to held-for-sale Schedule Of Retained Loans Purchases Sales And Transfer Into Held For Sale By Portfolio Segment [Table Text Block] Schedule of retained loans purchases, sales, and transfer into held-for-sale loan portfolio by portfolio segment. Schedule of financing receivable credit quality indicators Financing Receivable Credit Quality Indicators [Table Text Block] Schedule of impaired financing receivables Impaired Financing Receivables [Table Text Block] Schedule of impaired financing receivables, average recorded investment Impaired Financing Receivables, Average Recorded Investment [Table Text Block] Tabular disclosure of the average recorded investment of impaired financing receivables. Troubled debt restructuring on financing receivables Financing Receivable, Troubled Debt Restructuring [Table Text Block] Troubled debt restructuring on financing receivables nature and extent of modifications Troubled Debt Restructurings on Financing Receivables, Nature and Extent of Modifications [Table Text Block] Tabular disclosure of financing receivables and troubled debt restructurings, with detail related to the nature and extent of modifications. Troubled debt restructuring on financing receivables, financial effects of modifications and re-defaults Troubled Debt Restructurings on Financing Receivables, Financial Effects of Modifications and Redefaults [Table Text Block] Tabular disclosure of financing receivables and troubled debt restructurings, with detail related to the financial effects of modifications and redefaults. Certain loans acquired in transfer accretable yield movement roll forward Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Movement, Roll Forward [Table Text Block] Tabular roll forward disclosure of the aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. Mortgage servicing rights activity [Abstract] Mortgage Servicing Rights M S Rs Fair Value Roll Forward [Roll Forward] Mortgage Servicing Rights MSRs Fair Value Roll Forward. Fair value at beginning of period Servicing Asset at Fair Value, Amount MSR activity: Mortgage servicing rights activity Abstract Mortgage servicing rights activity Abstract. Originations of MSRs Servicing Asset at Fair Value, Additions, Originations The value of new servicing assets, subsequently measured at fair value, created during the current period through transfers of financial assets. Purchase of MSRs Servicing Asset at Fair Value, Additions, Purchases The value of new servicing assets, subsequently measured at fair value, acquired during the current period through purchases. Disposition of MSRs Servicing Asset at Fair Value, Disposals Net additions Mortgage Servicing Rights Net Additions The net additions of Mortgage Servicing Rights (MSRs). Changes due to collection/realization of expected cash flows Servicing Asset at Fair Value, Changes due to collection/realization of expected cash flows Changes in servicing asset fair value due to collection/realization of expected cash flows. Changes in valuation due to inputs and assumptions: Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs or Changes in Assumptions [Abstract] Changes due to market interest rates and other Servicing Asset at Fair Value, Changes in valuation due to inputs and assumptions, market interest rates and other The net increase or decrease in fair value as a result of changes in estimated future prepayments due to changes in market interest rates, and the difference between actual and expected prepayments. Changes in valuation due to other inputs and assumptions: Servicing Asset at Fair Value, Changes in Fair Value Due to Other Inputs and Assumptions [Abstract] Servicing Asset at Fair Value, Changes in Fair Value Due to Other Inputs and Assumptions [Abstract] Projected cash flows (e.g., cost to service) Servicing Asset at Fair Value, Changes in valuation due to inputs and assumptions, projected cash flows The net increase or decrease in fair value as a result of changes in inputs, assumptions, or model relating to projected cash flows, used to calculate the fair value of servicing assets Discount rates Servicing Asset at Fair Value, Changes in valuation due to inputs and assumptions, discount rates The net increase or decrease in fair value as a result of changes in inputs, assumptions, or model relating to discount rates, used to calculate the fair value of servicing assets Prepayment model changes and other Servicing Asset at Fair Value, Changes in valuation due to inputs and assumptions, prepayment model changes and other The net increase or decrease in fair value as a result of changes in inputs, assumptions, or model relating to prepayment model changes and other, used to calculate the fair value of servicing assets Total changes in valuation due to other inputs and assumptions Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Other Valuation Inputs or Changes in Assumptions The net Increase or decrease in fair value as a result of changes in other inputs, assumptions, or model used to calculate the fair value of servicing assets. Total changes in valuation due to inputs and assumptions Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs or Changes in Assumptions Fair value at December 31, Change in unrealized gains/(losses) included in income related to MSRs held Mortgage Servicing Rights Change In Unrealized Gains Losses Included In Income Change in unrealized gains (losses) included in income related to MSRs. Contractual service fees, late fees and other ancillary fees included in income Contractually Specified Servicing Fees, Amount Third-party mortgage loans serviced Mortgage Loans Serviced, Third Party, At Period End Third party mortgage loans serviced at period end. Servicer advances, net of an allowance for uncollectible amounts Servicer Advances On Mortgage Loans Represents contractual amounts the Firm pays as the servicer to third parties for scheduled principal and interest to a trust, taxes, insurance, default related expenses, etc. The advances are recovered from borrower payments [upon reperformance] or future cash flows at the time of liquidation of the or sale of the collateral. Schedule of stock by class Schedule of Stock by Class [Table Text Block] Schedule of common equity repurchases Class of Treasury Stock [Table Text Block] Legal expense/(benefit) Litigation Settlement, Expense FDIC-related expense Federal Deposit Insurance Corporation Premium Expense Fair Value Option Fair Value, Option [Text Block] Restricted Cash, Other Restricted Assets and Intercompany Funds Transfers Restricted Assets Disclosure [Text Block] Schedule of uses and disclosure of derivatives Schedule of Uses and Disclosure of Derivatives [Table Text Block] Schedule of Uses and Disclosure of Derivatives [Table Text Block] Notional amount of derivative contracts Schedule of Derivative Instruments [Table Text Block] Impact of derivatives on the Consolidated Balance Sheets Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Offsetting assets Offsetting Assets [Table Text Block] Offsetting liabilities Offsetting Liabilities [Table Text Block] Current credit risk of derivative receivables and liquidity risk of derivative payables Disclosure of Current Credit And Liquidity Risk of Derivatives [Table Text Block] Disclosure of the current credit risk of derivative receivables and the liquidity risk of derivative payables. Fair value hedge gains and losses Disclosure of Fair value hedge gains and losses [Table Text Block] Disclosure of Fair value hedge gains and losses. Schedule of amounts recorded on Consolidated Balance Sheets related to certain cumulative fair value hedge basis adjustments Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Cash flow hedge gains and losses Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Net investment hedge gains and losses Schedule of Net Investment Hedges in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Risk management derivatives gains and losses (not designated as hedging instruments) Schedule of Price Risk Derivatives [Table Text Block] Credit derivatives and credit-related notes Disclosure of Credit Derivatives [Table Text Block] Protection sold - credit derivatives and credit-related notes ratings/maturity profile Protection Sold Credit Derivatives And Credit Related Notes Ratings Maturity Profile [Table Text Block] Protection Sold Credit Derivatives And Credit Related Notes Ratings Maturity Profile [Table Text Block] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Consumer & Community Banking Consumer & Community Banking [Member] Consumer & Community Banking [Member] Corporate & Investment Bank Corporate & Investment Bank [Member] Corporate & Investment Bank [Member] Goodwill [Line Items] Goodwill [Line Items] Total goodwill Goodwill Schedule of securities sold under repurchase agreements, netting & securities loaned Schedule of Securities Financing Transactions [Table Text Block] Schedule of types of assets pledged in secured financing transactions Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Table Text Block] MSRs Mortgage Servicing Rights [Member] Mortgage Servicing Rights [Member] Level 3 Analysis - Supplemental Data [Abstract] Level 3 Analysis - Supplemental Data [Abstract] Level 3 Analysis - Supplemental Data [Abstract] Percentage of level 3 assets in total Firm assets Percentage of Level 3 Assets To Total Assets The percentage of level 3 assets as compared to total assets of the entity. Assets fair value Decrease in level 3 assets Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Interchange and merchant processing income Interchange and Merchant Processing [Member] Interchange and Merchant Processing [Member] Reward costs and partner payments Rewards and Partner Payments [Member] Rewards and Partner Payments [Member] Other card income Other Products and Services [Member] Other Products and Services [Member] Credit cost amortization period Deferred Costs, Credit Card Origination Costs, Amortization Period Deferred Costs, Credit Card Origination Costs, Amortization Period Credit card revenue sharing agreement terms Credit Card Revenue Sharing Agreements General Period Length in Years Credit Card Revenue Sharing Agreements General Period Length in Years Direct loan origination costs amortization period Deferred Costs, Direct Loan Origination Costs, Amortization Period Deferred Costs, Direct Loan Origination Costs, Amortization Period Total card income Fees And Commissions, Credit And Debit Cards1 Fees And Commissions, Credit And Debit Cards1 Deferred revenues, recognition period Capitalized Contract Cost, Amortization Period Adjustment to credit card rewards liability Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Change in Estimate of Transaction Price Bank and bank holding company Non-bank Nonbank Subsidiaries [Member] Nonbank Subsidiaries [Member] Statements of income and comprehensive income Income Statement [Abstract] Income Revenues [Abstract] Dividends from subsidiaries and affiliates Dividends From Subsidiaries Aggregate dividends declared to parent from subsidiaries during the period. Interest income from subsidiaries Interest Income From Subsidiaries Interest income received from loans made by parent to subsidiaries. Other interest income Interest and Dividend Income, Operating Other income from subsidiaries Other Income From Subsidiaries Other income received by parent company from subsidiaries. Other income Noninterest Income Total income Revenues Expense Operating Expenses [Abstract] Interest expense to subsidiaries and affiliates Interest Expense to Subsidiaries Interest expense paid by parent company for indebtedness to subsidiaries. Other interest expense Interest Expense Noninterest expense Other Noninterest Expense Total expense Combined Aggregate Interest and Noninterest Expense Aggregate amount of expenses recognized during the period. Includes both interest expense and noninterest expense. Income before income tax benefit and undistributed net income of subsidiaries Pretax Income Before Equity In Undistributed Earnings of Subsidiaries Income/(loss) before income tax (expense)/benefit and undistributed net income of subsidiaries. Income tax benefit Income Tax Expense (Benefit) Equity in undistributed net income of subsidiaries Income (Loss) from Subsidiaries, Net of Tax Other comprehensive income, net Other Comprehensive Income (Loss), Net of Tax Fair Value Measurement Fair Value Disclosures [Text Block] Commitments and Contingencies Disclosure [Abstract] Financial Instruments Owned and Pledged as Collateral [Table] Financial Instruments Owned and Pledged as Collateral [Table] Assets pledged at Federal Reserve banks and FHLBs Assets pledged to Federal Reserve Banks and Federal Home Loan Banks [Member] Assets pledged to Federal Reserve Banks and Federal Home Loan Banks ("FHLBs") [Member] Investment securities Asset-backed Securities [Member] Trading assets and other Securities (Assets) [Member] Pledged assets and Collateral Financial Instruments Owned and Pledged as Collateral [Line Items] Significant components of assets pledged Financial Instruments Owned and Pledged as Collateral [Abstract] Assets that may be sold or repledged or otherwise used by secured parties Financial Instruments Owned and Pledged as Collateral, Amount Eligible to be Repledged by Counterparty Assets that may not be sold or repledged or otherwise used by secured parties Financial Instruments Owned and Pledged as Collateral, Amount Not Eligible to be Repledged by Counterparty Total pledged assets Security Owned and Pledged as Collateral, Fair Value Collateral Received that Can be Resold or Repledged Collateral Received that Can be Resold or Repledged [Abstract] Collateral permitted to be sold or repledged, delivered, or otherwise used Fair Value of Securities Received as Collateral that Can be Resold or Repledged Collateral sold, repledged, delivered or otherwise used Fair Value of Securities Received as Collateral that Have Been Resold or Repledged Reconciliation of the Firm's regulatory capital, assets and risk-based capital ratios Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Defined benefit pension and OPEB plan expense Defined Benefit Plan, Effect of Twenty-Five Basis Point Decrease on Estimated Defined Benefit Pension and OPEB Plan Expense [Abstract] Defined Benefit Plan, Effect of Twenty-Five Basis Point Decrease on Estimated Defined Benefit Pension and OPEB Plan Expense [Abstract] Expected long-term rate of return Defined Benefit Plan, Projected Increase (Decrease) in Defined Benefit Pension and OPEB Plan Expense Resulting From a 25 Basis Point Decline in Expected Long-Term Rate of Return on Plan Assets Defined Benefit Plan, Projected Increase (Decrease) in Defined Benefit Pension and OPEB Plan Expense Resulting From a 25 Basis Point Decline in Expected Long-Term Rate of Return on Plan Assets Discount rate Defined Benefit Plan, Projected Increase (Decrease) in Defined Benefit Pension and OPEB Plan Expense Resulting from a 25 Basis Point Decline in Discount Rate Defined Benefit Plan, Projected Increase (Decrease) in Defined Benefit Pension and OPEB Plan Expense Resulting from a 25 Basis Point Decline in Discount Rate Benefit obligation Defined Benefit Plan, Effect of Twenty-Five Basis Point Decrease on Estimated Benefit Obligations [Abstract] Defined Benefit Plan, Effect of Twenty-Five Basis Point Decrease on Estimated Benefit Obligations [Abstract] Discount rate Defined Benefit Plan, Projected Increase (Decrease) in Defined Benefit Pension and OPEB Benefit Obligations Resulting from a 25-Basis Point Decline in the Discount Rate Defined Benefit Plan, Projected Increase (Decrease) in Defined Benefit Pension and OPEB Benefit Obligations Resulting from a 25-Basis Point Decline in the Discount Rate Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Impaired credit card loans with an allowance Impaired Financing Receivable, with Related Allowance, Recorded Investment Allowance for loan losses related to impaired credit card loans Impaired Financing Receivable, Related Allowance Average impaired credit card loans Impaired Financing Receivable, Average Recorded Investment Interest income on impaired credit card loans Impaired Financing Receivable, Interest Income, Accrual Method Risks and Uncertainties [Abstract] Concentrations of credit exposure Credit Risk Concentrations [Table Text Block] A table presenting concentrations of both on-balance sheet and off-balance sheet credit exposure. Lessee, Lease, Description [Table] Lessee, Lease, Description [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] Assets subject to operating leases Assets Leased to Others [Member] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Carrying value of assets subject to operating leases, net of accumulated depreciation Property, Plant and Equipment, Net Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Carrying value of assets subject to operating leases, net of accumulated depreciation Property Subject to or Available for Operating Lease, Net Accumulated depreciation Property Subject to or Available for Operating Lease, Accumulated Depreciation Fixed payment plan period Loan Modification Program, Fixed Payment Plan Period The duration period for placing customers on a fixed payment plan as a result of a credit card loan modification program. New TDRs Financing Receivable, Troubled Debt Restructuring, Postmodification New enrollments, percent of total retained credit card loans (less than) Financing Receivable, Modifications, New Enrollments, Percentage of Total Loans Financing Receivable, Modifications, New Enrollments, Percentage of Total Loans Weighted-average interest rate of loans – before TDR Financing Receivable, Modifications, Pre-Modification, Weighted-Average Interest Rate Of Loans With Rate Reductions Weighted-average interest rate of financing receivables with rate reductions (before modification), that have been modified by troubled debt restructurings that occurred. Weighted-average interest rate of loans – after TDR Financing Receivable, Modifications, Post-Modification, Weighted-Average Interest Rate Of Loans With Rate Reductions Weighted-average interest rate of financing receivables with rate reductions (after modification), that have been modified by troubled debt restructurings that occurred. Loans that redefaulted within one year of modification Financing Receivable, Troubled Debt Restructuring, Subsequent Default Number of years before payment default under a modified loan Number of Years Before Payment Default Under a Modified Loan The number of years before a payment default under a modified loan. Modified loans, payment default, number of payments past due Financing Receivable, Modifications, Subsequent Default, Number of Payments Past Due Financing Receivable, Modifications, Subsequent Default, Number of Payments Past Due Rate of default for modified loans, estimated weighted-average Rate of Default for Modified Loans, Estimated Weighted Average This item represents the estimated weighted average default rate for modified loans. Derivatives CVA Derivative, Gain (Loss) on Derivative, Net, CVA For credit valuation adjustments (“CVA”), amount of increase (decrease) in the fair value of derivatives recognized in the income statement. Derivatives FVA Derivative, Gain (Loss) on Derivative, Net, DVA and FVA For debit valuation adjustments ("DVA") and funding valuation adjustments ("FVA"), amount of increase (decrease) in the fair value of derivatives recognized in the income statement. Credit contracts Transaction Type [Axis] Transaction Type [Axis] Transaction [Domain] Transaction [Domain] OTC Over the Counter [Member] OTC–cleared Exchange Cleared [Member] Exchange-traded Exchange Traded [Member] Gross and Net Derivative Receivables by Contract and Settlement Type: Offsetting Derivative Assets [Abstract] Gross derivative receivables Derivative Asset, Fair Value, Gross Asset Amounts netted on the Consolidated balance sheets Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset Net derivative receivables Derivatives Assets, Subject to Master Netting Arrangement Fair values as of the balance sheet date of assets subject to master netting agreements resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of the master netting arrangements. Derivative receivables where an appropriate legal opinion has not been either sought or obtained Derivative Asset, Not Subject to Master Netting Arrangement Total derivative receivables recognized on the Consolidated balance sheets, Gross derivate receivables Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement Total derivative receivables recognized on the Consolidated balance sheets, Net derivative receivables Derivative Asset Collateral not nettable on the Consolidated balance sheets, Net derivative receivables Derivative, Collateral, Obligation to Return Securities and/or Cash Held by Third-Party Custodians Amount of obligation to return securities and/or cash collateral held at third-party custodians under master netting arrangements that have not been offset against derivative assets. Net amounts, Net derivative receivables Derivative Assets, Net Exposure After Liquid Securities and/or Cash Collateral Held at Third-Party Custodians, Assets Subject to a Master Netting Arrangement The balance of derivative receivables subject to master netting agreements after balance sheet netting and net of liquid securities and/or cash collateral held at third-party custodians. Net cash collateral payables Derivative Asset, Collateral, Obligation to Return Cash, Offset Gross and Net Derivative Payables by Contract and Settlement Type: Offsetting Derivative Liabilities [Abstract] Gross derivative payables Derivative Liability, Fair Value, Gross Liability Amounts netted on the Consolidated balance sheets Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset Net derivative payables Derivatives Liabilities, Subject to Master Netting Arrangement Fair values as of the balance sheet date of liabilities subject to master netting agreements resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of the master netting arrangements. Derivative payables where an appropriate legal opinion has not been either sought or obtained Derivative Liability, Not Subject to Master Netting Arrangement Total derivative payables recognized on the Consolidated balance sheets, Gross derivative payables Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement Total derivative payables recognized on the Consolidated balance sheets, Net derivative payables Derivative Liability Collateral not nettable on the Consolidated balance sheets, Net derivative payables Derivative, Collateral, Right to Reclaim Securities and/or Cash Held at Third-Party Custodians Amount of right to receive securities and/or cash collateral held at third-party custodians under master netting arrangements that have not been offset against derivative liabilities. Net amounts, Net derivative payables Derivative Liabilities, Net Amount After Liquid Securities and/or Cash Collateral Held at Third-Party Custodians, Liabilities Subject to a Master Netting Agreement The balance of derivative payables subject to master netting agreements after balance sheet netting and net of liquid securities and/or cash collateral held at third-party custodians. Netted cash collateral receivables Derivative Liability, Collateral, Right to Reclaim Cash, Offset Changes in the carrying amount of goodwill [Abstract] Goodwill [Roll Forward] Balance at beginning of period Changes during the period from: Changes in goodwill during the period Abstract Changes in goodwill during the period Abstract. Business combinations Goodwill, Acquired During Period Other Goodwill, Other Increase (Decrease) Balance at end of period Statement of Stockholders' Equity [Abstract] Common stock, dividends declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Cover page. Entities [Table] Entities [Table] Common stock Depositary Shares, each representing a one-four hundredth interest in a share of 6.125% Non-Cumulative Preferred Stock, Series Y Depositary Shares, One-Four Hundredth Interest in a Share of 6.125% Non-Cumulative Preferred Stock, Series Y [Member] Depositary Shares, One-Four Hundredth Interest in a Share of 6.125% Non-Cumulative Preferred Stock, Series Y [Member] Depositary Shares, each representing a one-four hundredth interest in a share of 6.10% Non-Cumulative Preferred Stock, Series AA Depositary Shares, One-Four Hundredth Interest in a Share of 6.10% Non-Cumulative Preferred Stock, Series AA [Member] Depositary Shares, One-Four Hundredth Interest in a Share of 6.10% Non-Cumulative Preferred Stock, Series AA [Member] Depositary Shares, each representing a one-four hundredth interest in a share of 6.15% Non-Cumulative Preferred Stock, Series BB Depositary Shares, One-Four Hundredth Interest in a Share of 6.15% Non-Cumulative Preferred Stock, Series BB [Member] Depositary Shares, One-Four Hundredth Interest in a Share of 6.15% Non-Cumulative Preferred Stock, Series BB [Member] Depositary Shares, each representing a one-four hundredth interest in a share of 5.75% Non-Cumulative Preferred Stock, Series DD Depositary Shares, One-Four Hundredth Interest in a Share of 5.75% Non-Cumulative Preferred Stock, Series DD [Member] Depositary Shares, One-Four Hundredth Interest in a Share of 5.75% Non-Cumulative Preferred Stock, Series DD [Member] Depositary Shares, each representing a one-four hundredth interest in a share of 6.00% Non-Cumulative Preferred Stock, Series EE Depositary Shares, One-Four Hundredth Interest in a Share of 6.00% Non-Cumulative Preferred Stock, Series EE [Member] Depositary Shares, One-Four Hundredth Interest in a Share of 6.00% Non-Cumulative Preferred Stock, Series EE [Member] Depositary Shares, each representing a one-four hundredth interest in a share of 4.75% Non-Cumulative Preferred Stock, Series GG Depositary Shares, One-Four Hundredth Interest in a Share of 4.75% Non-Cumulative Preferred Stock, Series GG [Member] Depositary Shares, One-Four Hundredth Interest in a Share of 4.75% Non-Cumulative Preferred Stock, Series GG [Member] Alerian MLP Index ETNs due May 24, 2024 Alerian MLP Index ETNs Due May 24, 2024 [Member] Alerian MLP Index ETNs Due May 24, 2024 [Member] Guarantee of Callable Step-Up Fixed Rate Notes due April 26, 2028 of JPMorgan Chase Financial Company LLC Guarantee of Callable Step-Up Fixed Rate Notes Due April 26, 2028 of JPMorgan Chase Financial Company LLC [Member] Guarantee of Callable Step-Up Fixed Rate Notes Due April 26, 2028 of JPMorgan Chase Financial Company LLC [Member] Entity Information [Line Items] Entity Information [Line Items] Document Type Document Type Document Annual Report Document Annual Report Document Transition Report Document Transition Report Document Period End Date Document Period End Date Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line One Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name 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 Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Entity Public Float Entity Public Float Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Entity Central Index Key Entity Central Index Key Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Current Fiscal Year End Date Current Fiscal Year End Date External Credit Rating by Grouping [Axis] External Credit Rating by Grouping [Axis] External Credit Rating by Grouping [Domain] External Credit Rating by Grouping [Domain] Single-notch downgrade Single-notch Downgrade [Member] Describes the impact of a single-notch downgrade of the entity's credit rating. Two-notch downgrade Two-notch Downgrade [Member] Describes the impact of a two-notch downgrade of the entity's credit rating. OTC and OTC-cleared derivative payables containing downgrade triggers OTC and OTC-Cleared Derivative Payables Containing Downgrade Triggers [Abstract] OTC and OTC-Cleared Derivative Payables Containing Downgrade Triggers [Abstract] Aggregate fair value of net derivative payables Derivative, Net Liability Position, Aggregate Fair Value Collateral posted Collateral Already Posted, Aggregate Fair Value Liquidity impact of downgrade triggers on OTC and OTC-cleared derivatives Liquidity Impact of Downgrade Triggers on OTC and OTC-Cleared Derivatives [Abstract] Liquidity Impact of Downgrade Triggers on OTC and OTC-Cleared Derivatives [Abstract] Amount of additional collateral to be posted upon downgrade Additional Collateral, Aggregate Fair Value Amount required to settle contracts with termination triggers upon downgrade Assets Needed for Immediate Settlement, Aggregate Fair Value Interest income Interest and Dividend Income, Operating [Abstract] Loans Interest and Fee Income, Loans and Leases Taxable securities Interest Income, Securities, Operating, Taxable Non-taxable securities Interest Income, Securities, Operating, Tax Exempt Total investment securities Investment Income, Interest Trading assets - debt instruments Interest Income, Trading Assets Amount of interest income earned from debt and equity financial instruments classified as (1) trading securities and (2) derivative assets. Federal funds sold and securities purchased under resale agreements Interest Income, Federal Funds Sold and Securities Purchased under Agreements to Resell Securities borrowed Interest Income Securities Borrowed Interest income on securities that are borrowed in connection with securities financing activities. Deposits with banks Interest Income, Deposits with Financial Institutions All other interest-earning assets Interest Income, Other Total interest income Interest Income, Operating Interest expense Interest Expense [Abstract] Interest bearing deposits Interest Expense, Deposits Federal funds purchased and securities loaned or sold under repurchase agreements Interest Expense, Federal Funds Purchased and Securities Sold under Agreements to Repurchase Short-term borrowings Interest Expense, Short-term Borrowings Trading liabilities – debt and all other interest-bearing liabilities Interest Expense, Trading Liabilities Long-term debt Interest Expense, Long-term Debt Beneficial interest issued by consolidated VIEs Interest Expense, Beneficial Interests Issued by Consolidated Variable Interest Entities Total interest expense Net interest income Interest Income (Expense), Net Net interest income after provision for credit losses Interest Income (Expense), after Provision for Loan Loss Operating lease income Operating Lease, Lease Income Operating lease income Operating Leases, Income Statement, Lease Revenue Depreciation expense Depreciation Depreciation expense Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease Lending-related fees Fees and Commissions, Lending Activities Fees and Commissions, Lending Activities Deposit-related fees Fees and Commissions, Depositor Accounts1 Fees and Commissions, Depositor Accounts1 Total lending- and deposit-related fees Lending And Deposit Related Fees Combination of: 1) Includes amounts charged depositors for: (A) maintenance of their accounts (maintenance charges); (B) failure to maintain specified minimum balances on account; (C) exceeding the number of checks or transactions allowed to be processed in a given period; (D) checks drawn on no minimum balance deposit accounts; (E) withdrawals from nontransaction deposit accounts; (F) closing savings accounts before a specified minimum period of time has elapsed; (G) accounts which have remained inactive for extended periods of time or which have become dormant; (H) checks drawn against insufficient funds that the bank assesses regardless of whether it decides to pay, return or hold the check; (I) issuing stop payment orders; (J) certifying checks; and (K) accumulating or disbursing funds deposited in IRAs or Keogh Plan accounts when not handled by the bank's trust department. This item does not include penalties assessed on the early withdrawal of time deposits. 2) This item represents the portion of monthly guaranty fees collected representing the interest imputed and recognized under the prospective interest method on the present value of the contractually stipulated guarantee payments at inception of the contract. 3) Income from servicing real estate mortgages, credit cards, and other financial assets held by others. Also include any premiums received in lieu of regular servicing fees on such loans only as earned over the life of the loans. May also be net of any related impairment of fair value of capitalized service costs. 4) Other lending-related fees. Segment results and reconciliation Schedule of Segment Reporting Information, by Segment [Table Text Block] Retained earnings Retained Earnings [Member] AOCI Fair value gains as a result of measurement alternative Treasury stock Treasury Stock [Member] Employee benefits and compensation plans Share-based Payment Arrangement [Member] Common shares issued (newly issued or distributed from treasury) [Abstract] Common Shares Issued From Treasury [Abstract] Schedule detailing information related to common stock transactions. Increase (Decrease) in Common Stock Shares Increase (Decrease) in Stockholders' Equity [Roll Forward] Total issued - balance at January 1 (in shares) Common Stock, Shares, Issued Outstanding (in shares) Common Stock, Shares, Outstanding Increase (Decrease) in Treasury Stock Shares Increase Decrease in Treasury Stock [Roll Forward] Increase Decrease in Treasury Stock [Roll Forward] Treasury - balance at January 1 (in shares) Treasury Stock, Shares Repurchase (in shares) Reissuance: Employee benefit and compensation plans (in shares) Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture Reissuance: Warrant exercise (in shares) Stock Issued During Period, Shares, Warrant Exercise Number of shares issued during the period as a result of warrant exercise. Reissuance: Employee stock purchase plans (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Total treasury - balance at December 31 (in shares) Goodwill and Mortgage Servicing Rights Goodwill and Intangible Assets Disclosure [Text Block] Pension plans Components of net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Benefits earned during the year Interest cost on benefit obligations Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Amortization: Defined Benefit Plan Amortization [Abstract] Defined Benefit Plan Amortization [Abstract] Net (gain)/loss Defined Benefit Plan, Amortization of Gain (Loss) Prior service (credit)/cost Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Curtailment (gain)/loss Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment Settlement (gain)/loss Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement Net periodic defined benefit cost(a) Defined Benefit Plan Net Periodic Benefit Cost Material Plans The amount of net periodic benefit cost for defined benefit plans for the period, relating only to plans considered to be material for reporting purposes. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain or loss, prior service cost or credit, transition asset or obligation, and gain or loss due to settlements or curtailments. Other defined benefit pension plans Other Defined Benefit Pension Plans, Net Periodic Benefit Cost, Immaterial Plans The amount of net periodic benefit cost for other defined benefit pension plans for the period, relating only to plans considered to be immaterial for reporting purposes. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain or loss, prior service cost or credit, transition asset or obligation, and gain or loss due to settlements or curtailments. Total defined benefit plans Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Total defined contribution plans Defined Contribution Plan, Cost Total pension and OPEB cost included in noninterest expense Pension and Other Postretirement Benefits Cost (Reversal of Cost) Changes in plan assets and benefit obligations recognized in other comprehensive income Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract] Prior service (credit)/cost arising during the year Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), before Tax Net (gain)/loss arising during the year Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax Amortization of net loss Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax Amortization of prior service (cost)/credit Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax Curtailment gain/(loss) Other Comprehensive Income (Loss), Defined Benefit Plan, Curtailment Gain (Loss), Before Tax Other Comprehensive Income (Loss), Defined Benefit Plan, Curtailment Gain (Loss), Before Tax Settlement gain/(loss) Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement Gain (Loss), Before Tax Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement Gain (Loss), Before Tax Foreign exchange impact and other Other Comprehensive Income (Loss), Foreign Currency Exchange Rate and Other Changes, before Tax The before tax amount recognized in other comprehensive income (but not yet recognized in net periodic benefit cost) attributed to foreign currency changes, or to any other cause not separately defined above. The effects of foreign currency exchange rate changes that are to be disclosed are those applicable to plans of a foreign operation whose functional currency is not the reporting currency. Total recognized in other comprehensive income Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax Total recognized in net periodic benefit cost and other comprehensive income Defined Benefit Plan, Amount Recognized in Net Periodic Benefit Cost (Credit) and Other Comprehensive (Income) Loss, before Tax Weighted-average assumptions used to determine net periodic benefit costs Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] Discount rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Expected long-term rate of return on plan assets Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets Rate of compensation increase Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase Interest crediting rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Interest Crediting Rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Interest Crediting Rate Health care cost trend rate Assumed for next year Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year Year when rate will reach ultimate Defined Benefit Plan, Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate Firm-administered multi-seller conduits Firm Administered Multi Seller Conduits [Member] Firm-sponsored multi-seller conduits. Program-wide credit enhancement required amount Program-Wide Credit Enhancement Required Amount Required amount of program-wide credit enhancement. Commercial paper issued by consolidated Variable Interest Entities eliminated in Consolidation CommercialPaperIssuedByConsolidatedVariableInterestEntitiesEliminatedInConsolidation The amount of commercial paper issued by variable interest entities that was eliminated in consolidation. Off-balance sheet lending-related financial commitments, contractual amount Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Investment securities - AFS Beneficial interests issued by consolidated VIEs Beneficial Interests Issued by Consolidated VIEs [Member] Beneficial Interests Issued by Consolidated VIEs [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Assets Fair Value Hedges, Assets [Abstract] Fair Value Hedges, Assets [Abstract] Carrying amount of the hedged items Hedged Asset, Fair Value Hedge Cumulative amount of fair value hedging adjustments included in the carrying amount of hedged items: Effect of Fair Value Hedges on Results of Operations, Assets [Abstract] Effect of Fair Value Hedges on Results of Operations, Assets [Abstract] Active hedging relationships Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease) Discontinued hedging relationships Hedged Asset, Discontinued Fair Value Hedge, Cumulative Increase (Decrease) Total Hedged Asset, Active and Discontinued Fair Value Hedge, Cumulative Increase (Decrease) Hedged Asset, Active and Discontinued Fair Value Hedge, Cumulative Increase (Decrease) Liabilities Fair Value Hedges, Liabilities [Abstract] Fair Value Hedges, Liabilities [Abstract] Carrying amount of the hedged items Hedged Liability, Fair Value Hedge Cumulative amount of fair value hedging adjustments included in the carrying amount of hedged items: Effect of Fair Value Hedges on Results of Operations, Liabilities [Abstract] Effect of Fair Value Hedges on Results of Operations, Liabilities [Abstract] Active hedging relationships Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease) Discontinued hedging relationships Hedged Liability, Discontinued Fair Value Hedge, Cumulative Increase (Decrease) Total Hedged Liability, Active and Discontinued Fair Value Hedge, Cumulative Increase (Decrease) Hedged Liability, Active and Discontinued Fair Value Hedge, Cumulative Increase (Decrease) Changes in benefit obligations and plan assets and funded status amounts Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block] Components of net periodic benefit costs reported in the Consolidated Statements of Income and other comprehensive income Schedule of Defined Benefit Plan, Net Periodic Benefit Cost [Table Text Block] Schedule showing the components of the amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain or loss, prior service cost or credit, transition asset or obligation, and gain or loss due to settlements or curtailments). Schedule of effect of 25-basis point decline on estimated future defined benefit plan expense and postretirement benefit obligations Schedule of Effect of Twenty-Five Basis Point Change On Estimated Future Defined Benefit Plan Expense and Benefit Obligation [Table Text Block] Schedule of Effect of Twenty-Five Basis Point Change On Estimated Future Defined Benefit Plan Expense and Benefit Obligation [Table Text Block] Weighted-average asset allocation of the fair values of total plan assets Defined Benefit Plan Actual Plan Asset Allocations [Table Text Block] Schedule showing the target and actual allocation percentage of the fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of total plan assets held as of the measurement date. Pension and OPEB plan assets and liabilities measured at fair value Schedule of Allocation of Plan Assets [Table Text Block] Changes in level 3 fair value measurements using significant unobservable inputs Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block] Estimated future benefit payments Schedule of Expected Benefit Payments [Table Text Block] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] CECL adoption impact Accounting Standards Update 2016-13 [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Allowance for credit losses Balance sheet reclassification Finance Receivable, Allowance for Credit Loss, Reclassification Finance Receivable, Allowance for Credit Loss, Reclassification Total pre-tax impact Cumulative Effect on Retained Earnings, before Tax Tax effect Cumulative Effect on Retained Earnings, Tax Decrease to retained earnings Cumulative Effect on Retained Earnings, Net of Tax US GSE obligations US Government-sponsored Enterprises Debt Securities [Member] Available-for-sale securities Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] Amortized cost Debt Securities, Available-for-sale, Amortized Cost Gross unrealized gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Gross unrealized losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Fair value Debt Securities, Available-for-sale Fannie Mae Fannie Mae [Member] Fannie Mae [Member] Freddie Mac Freddie Mac [Member] Freddie Mac [Member] Held-to-maturity securities Debt Securities, Held-to-maturity, Maturity [Abstract] Amortized cost Debt Securities, Held-to-maturity Gross unrealized gains Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain Gross unrealized losses Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss Fair value Debt Securities, Held-to-maturity, Fair Value Debt Securities, Available-for-sale and Held-to-maturity [Abstract] Amortized cost Available-for-sale Securities and Held-to-maturity Securities, Amortized Cost Basis Available-for-sale Securities and Held-to-maturity Securities, Amortized Cost Basis Gross unrealized gains Available-for-sale Securities and Held-to-maturity Securities, Accumulated Gross Unrealized Gain, before Tax Available-for-sale Securities and Held-to-maturity Securities, Accumulated Gross Unrealized Gain, before Tax Gross unrealized losses Available-for-sale Securities and Held-to-maturity Securities, Accumulated Gross Unrealized Loss, before Tax Available-for-sale Securities and Held-to-maturity Securities, Accumulated Gross Unrealized Loss, before Tax Fair value Available-for-sale Securities and Held-to-maturity Securities, Fair Value Available-for-sale Securities and Held-to-maturity Securities, Fair Value Securities exceeding 10% of total stockholders' equity, Amortized cost Available-for-sale Securities and Held-to-maturity Securities Exceeding Ten Percent of Total Stockholders' Equity, Amortized Cost Basis Available-for-sale Securities and Held-to-maturity Securities Exceeding Ten Percent of Total Stockholders' Equity, Amortized Cost Basis Securities exceeding 10% of total stockholders' equity, Fair value Available-for-sale Securities and Held-to-maturity Securities Exceeding Ten Percent of Total Stockholders' Equity, Fair Value Available-for-sale Securities and Held-to-maturity Securities Exceeding Ten Percent of Total Stockholders' Equity, Fair Value Amortized costs and estimated fair values Amortized Costs and Estimated Fair Values [Table Text Block] This item details amortized cost, unrealized gain/loss, and fair value for both debt and equity securities classified as (1) available-for-sale securities and (2)held-to-maturity securities. AFS securities are reported at fair value and HTM securities are reported at amortized cost on the Consolidated Balance Sheets. Securities impairment Securities Impairment AFS & HTM [Table Text Block] This item represents the fair value of securities categorized as AFS and HTM that have been in a continuous unrealized loss position for less than twelve months as well as twelve months or longer. This item also details the total fair value and the total gross unrealized losses. Securities gains and losses Available for sale Securities Gains Losses [Table Text Block] This item represents the entire disclosure related to Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale. Amortized cost and estimated fair value by contractual maturity Investments Classified by Contractual Maturity Date [Table Text Block] Statement of Financial Position [Abstract] Statement [Table] Statement [Table] VIEs consolidated by the Firm 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 Deposits with banks Interest-bearing Deposits in Banks and Other Financial Institutions Federal funds sold and securities purchased under resale agreements (included $14,561 and $13,235 at fair value) Federal Funds Sold and Securities Purchased under Agreements to Resell Securities borrowed (included $6,237 and $5,105 at fair value) Securities Borrowed Trading assets (included assets pledged of $111,522 and $89,073) Trading Assets Total debt and equity financial instruments classified as (1) trading securities and (2) derivative assets. (1) The total of financial instruments that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for debt and equity securities formerly categorized as available-for-sale or held-to-maturity which the entity held as of the date it opted to account for such securities at fair value. An enterprise may also categorize such a security as trading without the intent to sell it in the near term assuming the decision to categorize the security as trading occurred at acquisition; this is the reason why the trading category of investments in debt and equity securities are bought and sold "principally" for sale in the near term. Transfers into and out of the trading category should be rare. Such financial instruments that are held as of the reporting date are measured at fair value with unrealized holding gains and losses (the difference between fair value and the previously reported carrying amount) included in earnings. (2) Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements. Investment securities (included $350,699 and $230,394 at fair value and assets pledged of $10,325 and $11,432) Debt Securities, Available-for-sale and Held-to-maturity Loans (included $7,104 and $3,151 at fair value) Allowance for loan losses Loans and Leases Receivable, Allowance Loans, net of allowance for loan losses Financing Receivable, after Allowance for Credit Loss Accrued interest and accounts receivable Accrued Interest and Accounts Receivable Accrued interest and accounts receivable comprised of (1) accounts receivable and (2) accrued investment income. (1) Amount due from customers or clients, more than one year from the balance sheet date, for goods or services that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. (2) Interest, dividends, ancillary and other revenues earned but not yet received by the entity on its investments. Premises and equipment Goodwill, MSRs and other intangible assets Goodwill, Servicing Assets at Fair Value, and Other Intangible Assets Goodwill, Servicing Assets at Fair Value, and Other Intangible Assets Other assets (included $9,111 and $9,630 at fair value and assets pledged of $3,349 and $3,457) Other Assets Total assets Assets Liabilities Liabilities [Abstract] Deposits (included $28,589 and $23,217 at fair value) Federal funds purchased and securities loaned or sold under repurchase agreements (included $549 and $935 at fair value) Federal Funds Purchased, Securities Sold Under Agreements to Repurchase Total federal funds purchased and securities loaned or sold under repurchase agreements classified as Federal funds purchased and securities sold under agreements to repurchase. The amount shown on the books that a bank with insufficient reserves borrows, at the federal funds rate, from another bank to meet its reserve requirements and the amount of securities that an institution sells and agrees to repurchase at a specified date for a specified price, net of any reductions or offsets. Short-term borrowings (included $5,920 and $7,130 at fair value) Short-term Debt Trading liabilities Trading Liabilities Accounts payable and other liabilities (included $3,728 and $3,269 at fair value) Beneficial interests issued by consolidated VIEs (included $36 and $28 at fair value) Beneficial Interest Liability Long-term debt (included $75,745 and $54,886 at fair value) All other liabilities Other Liabilities Total liabilities Liabilities Commitments and contingencies (refer to Notes 28, 29 and 30) Commitments and Contingencies Stockholders’ equity Stockholders' Equity Attributable to Parent [Abstract] Preferred stock ($1 par value; authorized 200,000,000 shares: issued 2,699,250 and 2,606,750 shares) Preferred Stock, Including Additional Paid in Capital, Net of Discount Common stock ($1 par value; authorized 9,000,000,000 shares; issued 4,104,933,895 shares) Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income/loss Accumulated Other Comprehensive Income (Loss), Net of Tax Shares held in restricted stock units (“RSU”) trust, at cost (472,953 shares) Common Stock Held in Trust Treasury stock, at cost (1,020,912,567 and 829,167,674 shares) Treasury Stock, Value Total stockholders’ equity Total liabilities and stockholders’ equity Liabilities and Equity Schedule of Credit Derivatives [Table] Schedule of Credit Derivatives [Table] Investment-grade External Credit Rating, Investment Grade [Member] Noninvestment-grade External Credit Rating, Non Investment Grade [Member] Credit Derivatives [Line Items] Credit Derivatives [Line Items] Protection sold credit derivatives and credit related notes ratings/maturity profile Protection sold credit derivatives and credit related notes Abstract Protection sold credit derivatives and credit related notes ratings(a)/maturity profile. Less than 1 year Protection Sold Credit Derivatives And Credit Related Notes Ratings Less Than One Year Protection sold on credit derivatives and credit- related notes; ratings/maturity profile for maturities less than one year. From 1-5 years Protection Sold Credit Derivatives And Credit Related Notes Ratings From One To Five Years Protection sold on credit derivatives and credit-related notes; ratings/maturity profile for maturities from one to five years. More than 5 years Protection Sold Credit Derivatives And Credit Related Notes More Than Five Years Protection sold on credit derivatives and credit-related notes; ratings/maturity profile for maturities for more than five years. Total notional amount Credit Derivative, Maximum Exposure, Undiscounted Fair value of receivables Credit Risk Derivative Assets, at Fair Value Fair value of payables Credit Risk Derivative Liabilities, at Fair Value Net fair value Credit Risk Derivatives, at Fair Value, Net Accounts Payable and Other Liabilities Accounts Payable and Accrued Liabilities Disclosure [Text Block] Amount of collateralized loan obligations transferred from AFS to HTM for capital management purposes Debt Securities, Available-for-sale, Transfer to Held-to-maturity, Amount Debt Securities, Available-for-sale, Transfer to Held-to-maturity, Amount Segments, Geographical Areas [Abstract] International Operations International Operations [Text Block] This element may be used to disclose in its entirety the names of foreign countries from which revenue is material and the amount of revenue from external customers attributed to those countries. Amount must be based on the financial information used to produce the general-purpose financial statements. An entity may also provide subtotals of geographic information about groups of countries; accordingly, this element also may be used to identify a group of countries and provide the amount of revenue for that group. Balance sheets Assets Deposits with banking subsidiaries Deposits With Banking Subsidiaries Interest-bearing deposits with banking subsidiaries held for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet. Trading assets Advances to, and receivables from, subsidiaries Advances To Subsidiaries Advances to, and receivables from, subsidiaries and affiliates of a parent company. Investments (at equity) in subsidiaries and affiliates Investments In Subsidiaries Investments (at equity) in subsidiaries and affiliates of a parent company. Other assets Liabilities and stockholders’ equity Liabilities and Equity [Abstract] Borrowings from, and payables to, subsidiaries and affiliates Borrowings From Subsidiaries Borrowings from, and payables to, subsidiaries and affiliates of a parent company. Short-term borrowings Other Borrowings Other liabilities Total stockholders’ equity Loans repurchased or option to repurchase Loans Repurchased Or Loans With The Option To Repurchase Loans repurchased or loans with the option to repurchase. Real estate acquired through foreclosure Real Estate Acquired Through Foreclosure Net Investment Hedging Net Investment Hedging [Member] Gains/(losses) recorded in income and other comprehensive income/(loss) Net investment hedge gains and losses Abstract Net investment hedge gains and losses. Amounts recorded in income Derivative, Excluded Component, Gain (Loss), Recognized in Earnings Amounts recorded in OCI Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), before Reclassification and Tax Amounts recorded in OCI Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net Investment Hedge, before Tax Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net Investment Hedge, before Tax Schedule Of Mortgage Fees And Related Income [Table] Schedule Of Mortgage Fees And Related Income [Table] Schedule Of RFS Mortgage Fees And Related Income Table Schedule Of Mortgage Fees And Related Income [Line Items] Schedule Of Mortgage Fees And Related Income [Line Items] Components of mortgage fees and related income [Abstract] Components of mortgage fees and related income Abstract Components of mortgage fees and related income Abstract. RFS mortgage fees and related income Fees And Commissions Mortgage Banking And Related Components Abstract Fees And Commissions Mortgage Banking And Related Components. CCB mortgage fees and related income Net production revenue Abstract Net production revenue. Net production revenue Mortgage Production Revenue Mortgage production revenue. Net mortgage servicing revenue: Net Mortgage Servicing Revenue Abstract Net Mortgage Servicing Revenue. Operating revenue: Operating Revenue Abstract Operating Revenue Abstract. Loan servicing revenue Operating Revenue, Servicing Fees, Net, Real Estate Mortgages Income from servicing real estate mortgages held by others. Also include any premiums received in lieu of regular servicing fees on such loans only as earned over the life of the loans. May also be net of any related impairment of fair value of capitalized service costs. Changes in MSR asset fair value due to collection/realization of expected cash flows Operating Revenue, Real Estate Mortgages, Changes in Fair Value of Mortgage Servicing Rights, Changes Due To Collection/Realization Of Expected Cash Flows Operating revenue related to real estate mortgage servicing activity, representing the net increase or decrease in fair value as a result of changes in servicing asset fair value due to collection/realization of expected cash flows. Total operating revenue Operating Revenue, Net, Real Estate Mortgages Total net operating revenue related to real estate mortgage servicing activity. Risk management: Risk management Abstract Risk management Abstract. Changes in MSR asset fair value due to market interest rates and other Risk Management Revenue, Changes in Fair Value of Mortgage Servicing Rights, Changes in Market Interest Rates And Other Risk management revenue related to real estate mortgage servicing activity, representing the net increase or decrease in fair value as a result of changes in estimated future prepayments due to changes in market interest rates, and the difference between actual and expected prepayments. Other changes in MSR asset fair value due to other inputs and assumptions in model Risk Management Revenue, Changes in Fair Value of Mortgage Servicing Rights Resulting from Changes in Other Valuation Inputs or Changes in Assumptions Risk management revenue related to real estate mortgage servicing activity, representing the net increase or decrease in fair value as a result of changes in other inputs, assumptions, or model used to calculate the fair value of servicing assets. Change in derivative fair value and other Derivative, Gain (Loss) on Derivative, Net, Real Estate Mortgages Related, and Other Adjustments Net increase (decrease) in the fair value of the derivative or group of derivatives related to real estate mortgages, and other adjustments included in earnings. Total risk management Risk Management Revenue, Net, Real Estate Mortgages Total net risk management revenue related to real estate mortgage servicing activity. Total net mortgage servicing revenue Servicing Revenue, Net, Real Estate Mortgages Total net servicing revenue related to real estate mortgage activity. All other Fees and Commissions, Mortgage Banking and Related, All Other Fees, commissions other income related to mortgage banking activity not categorized elsewhere. Mortgage fees and related income Mortgage Fees And Related Income Combination of: 1) The noninterest income derived from mortgage banking activities (fees and commissions), including fees earned from servicing third-party assets. 2) The adjustment to the carrying value of the rights retained or purchased to service mortgages. These adjustments are made when the estimate of the fair value is changed. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. Asset-backed securities Amortized cost and estimated fair value by contractual maturity Amortized Cost And Estimated Fair Value By Contractual Maturity Abstract Amortized Cost and Estimated Fair Value by Contractual Maturity Abstract. Available-for-sale securities, Amortized Cost: Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract] Due in one year or less Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost Due after one year through five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost Due after five years through 10 years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Amortized Cost Due after 10 years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost Available-for-sale securities, Fair value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract] Due in one year or less Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value Due after one year through five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value Due after five years through 10 years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Fair Value Due after 10 years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value Fair value Available-for-sale securities, Average yield Debt Securities, Available-for-sale, Maturity, Weighted Average Yield [Abstract] Due in one year or less Debt Securities, Available-for-sale, Maturity, within One Year, Weighted Average Yield Due after one year through five years Debt Securities, Available-for-sale, Maturity, after One Through Five Years, Weighted Average Yield Due after five years through 10 years Debt Securities, Available-for-sale, Maturity, after Five Through Ten Years, Weighted Average Yield Due after 10 years Debt Securities, Available-for-sale, Maturity, after 10 Years, Weighted Average Yield Average yield Debt Securities, Available-for-sale, Maturity, Weighted Average Yield Debt Securities, Available-for-sale, Maturity, Weighted Average Yield Held-to-maturity securities, Amortized cost Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract] Due in one year or less Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost Due after one year through five years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost Due after five years through 10 years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Amortized Cost Due after 10 years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost Held-to-maturity securities, Fair value Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract] Due in one year or less Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value Due after one year through five years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value Due after five years through 10 years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Fair Value Due after 10 years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value Fair value Held-to-maturity securities, Average yield Debt Securities, Held-to-maturity, Maturity, Weighted Average Yield [Abstract] Due in one year or less Debt Securities, Held-to-maturity, Maturity, within One Year, Weighted Average Yield Due after one year through five years Debt Securities, Held-to-maturity, Maturity, after One Through Five Years, Weighted Average Yield Due after five years through 10 years Debt Securities, Held-to-maturity, Maturity, after Five Through Ten Years, Weighted Average Yield Due after 10 years Debt Securities, Held-to-maturity, Maturity, after 10 Years, Weighted Average Yield Average yield Debt Securities, Held-to-maturity, Maturity, Weighted Average Yield Debt Securities, Held-to-maturity, Maturity, Weighted Average Yield Supplemental information Supplemental Information [Abstract] Supplemental Information [Abstract] Due period of mortgage-backed securities and collateralized mortgage obligations Due Period Of Mortgage Backed Securities And Collateralized Mortgage Obligations Due period of mortgage-backed securities and collateralized mortgage obligations. US government agencies and US government sponsored enterprises residential mortgage-backed securities estimated duration US Government Agencies And US Government sponsored Enterprises Residential Mortgage Backed Securities Estimated Duration This item represents the estimated duration, which reflects anticipated future prepayments based on a consensus of dealers in the market, on residential mortgage-backed securities issued by US Government Agencies, such as the Government National Mortgage Association (GNMA or Ginnie Mae), and US Government-sponsored Enterprises, such as the Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac), Federal National Mortgage Association (FNMA or Fannie Mae), and the Federal Home Loan Bank (FHLB). US government agencies and US government sponsored enterprises residential collateralized mortgage obligations estimated duration US Government Agencies And US Government-sponsored Enterprises, Residential Collateralized Mortgage Obligations, Estimated Duration This item represents the estimated duration, which reflects anticipated future prepayments based on a consensus of dealers in the market, on residential collateralized mortgage obligations issued by US Government Agencies, such as the Government National Mortgage Association (GNMA or Ginnie Mae), and US Government-sponsored Enterprises, such as the Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac), Federal National Mortgage Association (FNMA or Fannie Mae), and the Federal Home Loan Bank (FHLB). Non-agency residential collateralized mortgage obligations estimated duration U.S. Non Agency Residential Collateralized Mortgage Obligations Estimated Duration This item represents the estimated duration, which reflects anticipated future prepayments based on a consensus of dealers in the market, on U.S. non-agency residential collateralized mortgage obligations. Revenue Investment banking fees Principal transactions Principal Transactions Revenue, Net Lending- and deposit-related fees Asset management, administration and commissions Asset Management, Administration and Commissions Combination of: 1) Revenue recognized in the period for (A) performance (incentive) fees based on the investment results achieved for management of certain institutional accounts and hedge funds, (B) schedule-based fees earned for management of mutual funds and closed-end funds, based either on average daily net assets or on a combination of the average daily net assets and gross income, and (C) other investment management and advisory fees. 2) Acting as an agent, a broker-dealer may buy and sell securities on behalf of its customers. In return for such services, the broker-dealer charges a commission. Each time a customer enters into a buy or sell transaction, a commission is earned by the broker-dealer for its selling and administrative efforts. For securities purchased, the commission is recorded as a receivable from customers; for securities sold, it is recorded as reductions in the payable to customers. Commissions earned are usually related to the broker-dealer's customers' trading volume and the dollar amounts of the trades. In general, commissions are for smaller trades of exchange-listed stocks and bonds made by retail customers. 3)Income from services rendered by trust departments or by any consolidated subsidiaries acting in a fiduciary capacity, including fees earned for (A) acting as an agent for fiduciary placement and loans and (B) custody or investment advisory services when such fees are not separately billed to the customer. This item excludes commissions and fees received for the accumulation or disbursement of funds deposited to Individual Retirement or Keogh plan accounts when such are not handled by the reporting entity's trust department. 4) Income from agency and brokerage operations (includes sales of annuities and supplemental contracts); service charges, commissions, and fees from the sale of insurance and related services; and management fees from separate accounts, deferred annuities, and universal life products. 5) Revenues from providing transfer agent services to corporations. Such services include maintaining records of investors and account balances and transactions, canceling and issuing certificates, processing investor mailings and dealing with any associated problems (i.e. lost or stolen certificates). 6) Service revenue earned by a depository institution that holds the account balances of other financial institutions and provides services thereto. Such services include check collection and item processing. 7) Fee and commission revenue earned from sources not otherwise specified in the existing taxonomy, such as ADR fees, fund accounting fees, etc. Investment securities gains/(losses) Mortgage fees and related income Card income Other income Noninterest Income, Other Noninterest revenue Interest income Interest expense Total net revenue Revenues, Net of Interest Expense Noninterest expense Noninterest Expense [Abstract] Compensation expense Labor and Related Expense Occupancy expense Occupancy, Net Technology, communications and equipment expense Communications and Information Technology Professional and outside services Professional and Contract Services Expense Marketing Marketing and Advertising Expense Other expense Total noninterest expense Noninterest Expense Income before income tax expense Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense Net income applicable to common stockholders Net Income (Loss) Available to Common Stockholders, Basic Net income per common share data Earnings Per Share, Basic and Diluted [Abstract] Basic earnings per share (in dollars per share) Earnings Per Share, Basic Diluted earnings per share (in dollars per share) Earnings Per Share, Diluted Weighted-average basic shares (in shares) Weighted Average Number of Shares Outstanding, Basic Weighted-average diluted shares (in shares) Weighted Average Number of Shares Outstanding, Diluted Schedule Of Retained Loans Purchases Sales and Transfer Into Held For Sale By Portfolio Segment [Table] Schedule Of Retained Loans Purchases Sales and Transfer Into Held For Sale By Portfolio Segment [Table] Schedule of retained loans purchases, sales, and transfer into held-for-sale loan portfolio by portfolio segment. Credit card Retained Loans Purchases Sales and Transfer Into Held For Sale By Portfolio Segment [Line Items] Retained Loans Purchases Sales And Transfer Into Held For Sale By Portfolio Segment [Line Items] Retained loans purchases, sales, and transfer into held-for-sale loan portfolio by portfolio segment. Purchases Financing Receivable, Purchase Sales Financing Receivable, Sale Retained loans reclassified to held-for-sale Financing Receivable, Reclassification to Held-for-sale Excluded retained loans purchased from correspondents that were originated in accordance with the Firm's underwriting standards Financing Receivable, Excluded, Purchased from Correspondents, Originated in Accordance with the Firm's Underwriting Standards Excluded financing receivables purchased from correspondents that were originated in accordance with the Firm’s underwriting standards. Changes in fair value under the fair value option election Fair Value Option, Disclosures [Table Text Block] Difference between aggregate fair value and aggregate remaining contractual principal balance outstanding Difference Between Aggregate Fair Value and Aggregate Remaining Contractual Principal Balance Outstanding [Table Text Block] Difference Between Aggregate Fair Value and Aggregate Remaining Contractual Principal Balance Outstanding [Table Text Block] Fair value option, structured notes by balance sheet classification and primary embedded derivative risk Fair Value, Option, Structured Notes By Balance Sheet Classification And Primary Embedded Derivative Risk [Table Text Block] [Table Text Block] for Presents the fair value of structured notes by balance sheet classification and primary embedded derivative risk. VIEs consolidated by the Firm Investments [Domain] Trading assets Debt Securities, Trading [Member] Debt Securities, Trading [Member] Investment securities Other financial assets Other Financial Assets [Member] Other Financial Assets [Member] Internal Credit Assessment [Domain] Firm-sponsored mortgage and other consumer securitization trusts Firm sponsored mortgage and other consumer securitization trusts Abstract Firm-sponsored mortgage and other consumer securitization trusts. Total assets held by securitization VIEs Continuing Involvement with Transferred Financial Assets, Principal Amount Outstanding Assets held in consolidated securitization VIEs Continuing Involvement with Continued to be Recognized Transferred Financial Assets, Amount Outstanding Assets held in nonconsolidated securitization VIEs with continuing involvement Interest in securitized assets in nonconsolidated VIEs Transferor's Interests in Transferred Financial Assets, Fair Value Senior securities purchased in connection with CIB's secondary market-making activities Senior Securities Purchased, Excluded from Interests Continued To Be Held By Transferor, Fair Value Senior securities purchased in connection with IB secondary market making activities. These securities are excluded from entity interest in securitized assets in nonconsolidated VIEs. Subordinated securities purchased in connection with CIB's secondary market-making activities Subordinated Securities Purchased, Excluded From Interests Continued To Be Held by Transferor, Fair Value Subordinated securities purchased in connection with IB secondary market making Activities. These securities are excluded from entity interest in securitized assets in nonconsolidated VIEs. Retained securitization interests, risk-rated 'A' or better, at fair value Percent Of Retained Securitization Interests, Fair Value, Rated A Or Better Percent of retained securitization interests rated A or better. Fair value of retained interests Retained Interest, Fair Value Disclosure Loss Contingencies [Table] Loss Contingencies [Table] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Threatened or Pending Litigation Threatened or Pending Litigation [Member] The risk of loss associated with the outcome of threatened or pending litigation against an entity. Federal Republic of Nigeria Litigation Federal Republic of Nigeria Litigation [Member] Federal Republic of Nigeria Litigation [Member] Foreign Exchange Investigations and Litigation Foreign Exchange Investigations and Litigation [Member] Foreign Exchange Investigations and Litigation [Member] Interchange Litigation Interchange Litigation [Member] The risk of loss associated with the outcome of pending or threatened litigation related to interchange litigation. Federal Government of Nigeria and Two Major International Oil Companies Federal Government of Nigeria and Two Major International Oil Companies [Member] Federal Government of Nigeria and Two Major International Oil Companies [Member] Federal Republic of Nigeria Federal Republic of Nigeria [Member] Federal Republic of Nigeria [Member] The Defendants Visa Defendants and Mastercard and Certain Banks [Member] Visa Defendants and Mastercard and Certain Banks [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Loss contingency range of possible loss Loss Contingency, Range of Possible Loss, Portion Not Accrued Amount paid out of monies in account following settlement of dispute Increase (Decrease) in Client Funds Held Amount of claim Loss Contingency, Damages Sought, Value Loss contingency, exemption of disqualification period Loss Contingency, Exemption Of Disqualification Period Loss Contingency, Exemption Of Disqualification Period Loss contingency disqualification period Loss Contingency, Disqualification Period Loss Contingency, Disqualification Period Payments for fines in connection with legal settlement Payments for Legal Settlements Number of separate actions Loss Contingency, Claims Settled, Number Settlement amount Litigation Settlement, Amount Awarded to Other Party SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] Loans sold with recourse Loans Sold With Recourse [Member] Loans sold with recourse. Loans sold with recourse Loans Sold with Recourse [Abstract] Loans Sold with Recourse [Abstract] Unpaid principal balance of loans sold with recourse Indemnification Agreements Loan Sale And Securitization Loans Sold With Recourse Contractual Amount The contractual amount (unpaid principal balance) of loans sold with recourse. Carrying value of related liability for recourse obligations Indemnification Agreements, Loan Sale and Securitization, Loans Sold with Recourse: Carrying Value The carrying value of the related liability of loans sold with recourse. 30–89 days past due and still accruing Financing Receivables, 30 to 89 Days Past Due, and Still Accruing [Member] [Member] Financing Receivables, 30 to 89 Days Past Due, and Still Accruing [Member] [Member] Ohio OHIO Pennsylvania PENNSYLVANIA Michigan MICHIGAN Net charge-offs Net charge-off rate % of 90 plus days past due to total retained loans Percentage of Loans Ninety Plus Days Past Due to Total Retained Loans Percentage of loans ninety plus days past due to total retained loans. Percentage of portfolio based on carrying value with estimated refreshed FICO scores, Equal to or greater than 660 Percentage of Loans with FICO Scores of 660 Or Greater to Total Retained Loans Percentage of recorded investment in retained loans that have estimated refreshed FICO scores equal or greater than 660. Percentage of portfolio based on carrying value with estimated refreshed FICO scores, Less than 660 Percentage of Loans with FICO Scores Less than 660 to Total Retained Loans Percentage of recorded investment in retained loans that have estimated refreshed FICO scores of less than 660. Percentage of portfolio based on carrying value with estimated refreshed FICO scores, No FICO available Percentage of Loans with No FICO Score Available Percentage of Loans with No FICO Score Available Operating Leases Lessee, Operating Lease, Liability, Payment, Due [Abstract] 2020 Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months 2021 Lessee, Operating Lease, Liability, Payments, Due Year Two 2022 Lessee, Operating Lease, Liability, Payments, Due Year Three 2023 Lessee, Operating Lease, Liability, Payments, Due Year Four 2024 Lessee, Operating Lease, Liability, Payments, Due Year Five After 2024 Lessee, Operating Lease, Liability, Payments, Due after Year Five Total future minimum lease payments Lessee, Operating Lease, Liability, Payments, Due Less: Imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Total Operating Lease, Liability Residential real estate loans and non-modified credit card loans Residential Real Estate and Non-Modified Credit Card Loans [Member] Residential Real Estate and Non-Modified Credit Card Loans [Member] Auto and modified credit card loans Auto and Modified Credit Card Loans [Member] Auto and Modified Credit Card Loans [Member] Residential real estate and auto loans Residential Real Estate and Auto Loans [Member] Residential real estate and auto loans. Real estate Real Estate [Member] 90 or more days past due Days Past Due, 90 or More [Member] Retained loans that are 90 days or more past due. 180 or more days past due Days Past Due, 180 or More [Member] Retained loans that are 180 days or more past due. 120 or more, days past due Financing Receivables, Equal to Greater than 120 Days Past Due [Member] Retained loans that are 120 days or more past due. Less than 60 days until charge-off Days Until Charge-Off, Less Than 60, with Notification of Bankruptcy Filing or Other Event [Member] Retained loans which have received notification of a bankruptcy filing or other event that suggests a loss is either known or highly certain, which are charged-off within 60 days. Period past due, credit analysis factors, charge off criteria Period Past Due, Credit Analysis Factors, Charge off Criteria As part of the factors to be considered in analyzing credit statistics, the period of time the loan is past due before being charged off. Loans, charge-off criteria, period past due Loans, Charge-off Criteria, Period Past Due As part of the criteria for determining whether a loan may be charged off, the period of time the loan is required to be past due. The loan period past due typically is not the only criteria used in determining a charge-off. Number of months before updating exterior opinion on home valuation Number of Months Before Updating Exterior Opinion on Home Valuation For residential real estate loans with collateral, when it becomes likely that a borrower is either unable or unwilling to pay, the number of months the Firm waits to update the broker's price opinion of a home based on an exterior-only valuation. Number of months before updating collateral values on commercial real estate loans Number of Months Before Updating Collateral Values on Commercial Real Estate Loans For commercial real estate loans, the period of time for collateral values to be updated, either by obtaining a new appraisal or by performing an internal analysis, in accordance with the Firm’s policies (collateral values are generally based on appraisals from internal and external valuation sources). Number of months the borrower has performed under modified terms Number of Months the Borrower Has Performed Under Modified Terms The number of months a borrower has performed under modified terms of a loan. Number of payments under modified terms to recognize interest on cash basis Number of Payments Under Modified Terms to Recognize Interest on Cash Basis For loans modified in TDRs, the number of borrower payments under the modified terms to generally be recognized as interest income on a cash basis. Number of portfolio segments Number of Loan Portfolio Segments Number of Loan Portfolio Segments Asset management fees Investment Advisory, Management and Administrative Fees [Abstract] Investment Advisory, Management and Administrative Fees [Abstract] Investment management fees Investment Advisory Fees1 Investment Advisory Fees1 All other asset management fees All other asset management fees All other asset management fees. Total asset management fees Asset Management Fees Asset Management Fees Total administration fees Administrative Services Revenue1 Administrative Services Revenue1 Commissions and other fees Fees and Commissions1 [Abstract] Fees and Commissions1 [Abstract] Brokerage commissions Brokerage Commissions Revenue All other commissions and fees Fees and Commissions, Other1 Fees and Commissions, Other1 Total commissions and fees Fees And Commissions1 Fees And Commissions1 Total asset management, administration and commissions U.S. Income (Loss) from Continuing Operations before Income Taxes, Domestic Non-U.S. Income (Loss) from Continuing Operations before Income Taxes, Foreign Allowance for credit losses on financing receivables Financing Receivable, Allowance for Credit Loss [Table Text Block] Trading Activity [Axis] Trading Activity [Axis] Trading Activity, by Type [Domain] Trading Activity, by Type [Domain] Interest rate Interest Rate Risk [Member] Credit Credit Risk [Member] Foreign exchange Foreign Exchange [Member] Equity Equity [Member] Commodity Commodity [Member] Total trading revenue Trading Gain (Loss) Private equity gains/(losses) Principal Investment Gain (Loss) Principal transactions In the process of active or suspended foreclosure In Process of Active or Suspended Foreclosure [Member] In Process of Active or Suspended Foreclosure [Member] 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] Beginning balance Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Accretion into interest income Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion Changes in interest rates on variable-rate loans Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Changes in Interest Rates on Variable Rate Loans Changes in the accretable yield due to changes in interest rates on variable rate loans. Other changes in expected cash flows Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Other Changes to Nonaccretable Difference Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Other Changes to Nonaccretable Difference Balance at December 31 Accretable yield percentage Accretable Yield Percentage Accretable yield percentage. Investment Securities Securities [Text Block] This item represents the entire disclosure related to Investments in Certain Debt and Equity Securities which include all debt and equity securities classified as (1) available-for-sale securities and (2) held-to-maturity securities. This is includes securities (other than those equity securities accounted for under the equity or cost methods of accounting) with readily determinable fair values. A debt security represents a creditor relationship with an enterprise that is in the form of a security. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities. Weighted-average prepayment speed assumption (constant prepayment rate) Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of Other than 10 or 20 Percent Adverse Change in Prepayment Speed, Percent Impact on fair value of 10% adverse change Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 10 Percent Adverse Change in Prepayment Speed Impact on fair value of 20% adverse change Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 20 Percent Adverse Change in Prepayment Speed Weighted-average option adjusted spread Weighted average option adjusted spread Weighted-average option adjusted spread. Impact on fair value of 100 basis points adverse change Weighted Average Option Adjusted Spread Impact On Fair Value Of Hundred Basis Points Adverse Change Impact on fair value of 100 basis points adverse change in the weighted-average option adjusted spread. Impact on fair value of 200 basis points adverse change Weighted Average Option Adjusted Spread, Impact On Fair Value Of Two Hundred Basis Points Adverse Change Impact on fair value of 200 basis points adverse change in the weighted-average option adjusted spread. 30–119 days past due Financing Receivables, 30 to 119 Days Past Due [Member] Retained loans that are 30 to 119 days past due. 120 or more days past due Total other consumer Other Consumer [Member] Class of financing receivables related to other consumer, which includes Auto, Business Banking, and Student and other. Louisiana LOUISIANA Nonaccrual loans 90 or more days past due and still accruing Securities Financing Transaction [Table] Securities Financing Transaction [Table] Non-U.S. government debt Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Overnight and continuous Maturity Overnight and Continuous [Member] Maturity Overnight and Continuous [Member] Up to 30 days Maturity Less than 30 Days [Member] 30 – 90 days Maturity 30 to 90 Days [Member] Greater than 90 days Maturity Greater than 90 Days [Member] Securities Financing Transaction [Line Items] Securities Financing Transaction [Line Items] Securities sold under repurchase agreements Securities Sold under Agreements to Repurchase, Gross Including Not Subject to Master Netting Arrangement Securities loaned and other Securities Loaned, Gross Including Not Subject to Master Netting Arrangement Total residential real estate – excluding PCI Home equity Loan Restructuring Modification [Axis] Loan Restructuring Modification [Axis] Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] Trial Modification Trial Modification [Member] Financing receivables that have been modified by troubled debt restructurings that are currently in the trial modification period. Permanent Modification Permanent Modification [Member] Financing receivables that have been permanently modified by troubled debt restructurings. Interest rate reduction Contractual Interest Rate Reduction [Member] Term or payment extension Term or Payment Extension [Member] Term or Payment Extension [Member] Principal and/or interest deferred Payment Deferral [Member] Principal forgiveness Principal Forgiveness [Member] Other Other Modifications [Member] Other Modifications [Member] Number of loans modified Financing Receivable, Modifications, Number of Contracts Concession granted Financing Receivable, Modifications, Percentage of Modifications Financing Receivable, Modifications, Percentage of Modifications Percentage, sum of items by type, may exceed Percentage, Sum of Items by Type, May Exceed In a group of items by type, the percentage that the sum of the items may exceed due to the inclusion of some items in more than one category. For example, in loan modifications, some loans may have more than one type of concession granted on the loan, so a sum of all types of loan modifications granted would exceed 100%. Accounting Standards Update 2016-02 Accounting Standards Update 2016-02 [Member] Operating lease liabilities Operating lease ROU assets Operating Lease, Right-of-Use Asset Operating lease, general lease terms (or less) Lessee, Operating Lease, Term of Contract Additional future operating lease commitments not yet commenced Lessee, Operating Lease, Lease Not Yet Commenced, Amount Lessee, Operating Lease, Lease Not Yet Commenced, Amount Operating leases not yet commenced, lease terms (up to) Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract Basis of presentation policy Basis of Accounting, Policy [Policy Text Block] Reclassifications policy Reclassification, Policy [Policy Text Block] Consolidation policy Consolidation, Policy [Policy Text Block] Revenue recognition policy Revenue from Contract with Customer [Policy Text Block] Use of estimates in the preparation of consolidated financial statements policy Use of Estimates, Policy [Policy Text Block] Foreign currency translation policy Foreign Currency Transactions and Translations Policy [Policy Text Block] Offsetting assets and liabilities policy Derivatives and Securities Purchased and Sold Under Resale and Repurchase Agreements, Offsetting, Policy [Policy Text Block] Disclosure of accounting policy for offsetting derivative instruments and securities purchased and sold under resale and repurchase agreements, respectively, when the offsetting requirements under U.S. GAAP are satisfied. [Policy Text Block] Statements of cash flows policy Cash and Cash Equivalents, Unrestricted Cash and Cash Equivalents, Policy [Policy Text Block] Accounting standard adopted January 1, 2020 and Accounting standards adopted January 1, 2018 New Accounting Pronouncements, Policy [Policy Text Block] Fair value policy Fair Value of Financial Instruments, Policy [Policy Text Block] Fair value option policy Fair Value of Financial Instruments, Fair Value Option, Policy [Policy Text Block] The policy financial instruments where the fair value has been elected. Derivatives policy Derivatives, Policy [Policy Text Block] Interest income and interest expense policy Interest Income And Interest Expense [Policy Text Block] Describes an entity's accounting policy for reporting Interest Income And Interest Expense. Pension and other postretirement plans policy Pension and Other Postretirement Plans, Policy [Policy Text Block] Share-based compensation, option and incentive plans policy Share-based Payment Arrangement [Policy Text Block] Loans receivable policy Financing Receivable [Policy Text Block] Allowance for credit losses policy Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] Loan securitizations policy Transfers and Servicing of Financial Assets, Policy [Policy Text Block] Goodwill policy Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Mortgage servicing rights policy Transfers and Servicing of Financial Assets, Servicing of Financial Assets, Policy [Policy Text Block] Premises and equipment policy Property, Plant and Equipment, Policy [Policy Text Block] Internal use software policy Internal Use Software, Policy [Policy Text Block] Debt policy Debt, Policy [Policy Text Block] Earnings per share policy Earnings Per Share, Policy [Policy Text Block] Income tax policy Income Tax, Policy [Policy Text Block] Off-balance sheet credit exposure policy Off-Balance-Sheet Credit Exposure, Policy [Policy Text Block] Reconciliation of the applicable statutory U.S. income tax rate to the effective tax rate the effective tax rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Components of income tax expense/(benefit) included in the Consolidated Statements of Income Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] U.S. and non-U.S. components of income before income tax expense/(benefit) Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Significant components of deferred tax assets and liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Reconciliation of the beginning and ending amount of unrecognized tax benefits Summary of Income Tax Contingencies [Table Text Block] Tax examination status Summary of Income Tax Examinations [Table Text Block] Components of income tax expense/(benefit) included in the Consolidated Statements of Income Components of Income Tax Expense (Benefit), Continuing Operations [Abstract] Current income tax expense/(benefit) Income Tax Expense (Benefit), Continuing Operations [Abstract] U.S. federal Current Federal Tax Expense (Benefit) Non-U.S. Current Foreign Tax Expense (Benefit) U.S. state and local Current State and Local Tax Expense (Benefit) Total current income tax expense/(benefit) 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) Non-U.S. Deferred Foreign Income Tax Expense (Benefit) U.S. state and local Deferred State and Local Income Tax Expense (Benefit) Total deferred income tax expense/(benefit) Total income tax expense Components of income tax expense/(benefit), supplemental information Components of Income Tax Expense (Benefits), Supplemental Information [Abstract] Components of Income Tax Expense (Benefits), Supplemental Information [Abstract] Tax benefits recorded as a result of tax audit resolutions Tax Adjustments, Settlements, and Unusual Provisions Increase (decrease) to income tax allocated directly to equity Income Tax Effects Allocated Directly to Equity Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] BHC Bank Holding Companies [Member] Bank Holding Companies [Member] IDI Subsidiaries, Insured Depository Institutions [Member] Subsidiaries, Insured Depository Institutions [Member] JPMorgan Chase Bank, N.A. JPMorgan Chase Bank, N.A. [Member] JPMorgan Chase Bank, National Association, a national bank with branches in the U.S. Risk-Weighted Assets Calculation Methodology [Axis] Risk-Weighted Assets Calculation Methodology [Axis] Risk-Weighted Assets Calculation Methodology [Domain] Risk-Weighted Assets Calculation Methodology [Domain] Basel III Basel III [Member] Basel III [Member] Basel III Standardized Fully Phased-In Basel III Standardized Fully Phased-In [Member] Basel III Standardized Fully Phased-In [Member] Basel III Advanced Fully Phased-In Basel III Advanced Fully Phased-In [Member] Basel III Advanced Fully Phased-In [Member] Basel III Standardized Transitional Basel III Standardized Transitional [Member] Basel III Standardized Transitional [Member] Basel III Advanced Transitional Basel III Advanced Transitional [Member] Basel III Advanced Transitional Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Minimum capital ratios Minimum Capital Ratios [Abstract] Minimum Capital Ratios [Abstract] CET1 Common Equity Tier 1 Capital Required for Capital Adequacy to Risk Weighted Assets The minimum Common Equity Tier 1 capital ratio (Common Equity Tier 1 capital divided by risk-weighted assets) required for capital adequacy under the regulatory framework for prompt corrective action. Tier 1 Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Total Capital Required for Capital Adequacy to Risk Weighted Assets Tier 1 leverage Tier One Leverage Capital Required for Capital Adequacy to Average Assets SLR Supplementary Leverage Ratio Required For Capital Adequacy To Average Assets Supplementary Leverage Ratio Required For Capital Adequacy To Average Assets Well-capitalized ratios Well Capitalized Ratios [Abstract] Well Capitalized Ratios [Abstract] CET1 Common Equity Tier 1 Capital Required to be Well Capitalized to Risk Weighted Assets Common Equity Tier 1 Capital Required to be Well Capitalized to Risk Weighted Assets Tier 1 Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Total Capital Required to be Well Capitalized to Risk Weighted Assets Tier 1 leverage Tier One Leverage Capital Required to be Well Capitalized to Average Assets SLR Supplementary Leverage Ratio Required To Be Well Capitalized To Risk Weighted Assets Supplementary Leverage Ratio Required To Be Well Capitalized To Risk Weighted Assets Regulatory capital, assets and risk based ratios - supplemental information [Abstract] Regulatory Capital, Assets and Risk Based Ratios - Supplemental Information [Abstract] Regulatory Capital, Assets and Risk Based Ratios - Supplemental Information [Abstract] Adjustments to Capital for Deferred Tax Liabilities [Abstract] Adjustments to Capital for Deferred Tax Liabilities [Abstract] Adjustments to Capital for Deferred Tax Liabilities [Abstract] Capital conservation buffer Capital Conservation Buffer An additional amount held in risk-based capital designed to ensure that banks build up capital buffers outside periods of stress which can be drawn down as losses are incurred. The requirement is based on simple capital conservation rules designed to avoid breaches of minimum capital requirements. GSIB surcharge GSIB Surcharge A specific risk-based capital surcharge applied to a Global Systemically Important Bank (“GSIB”). Institutions are identified as GSIBs by the Financial Stability Board (“FSB”). SLR, minimum requirement Supplementary Leverage Ratio Required For Capital Adequacy To Average Assets, Minimum Requirement Supplementary Leverage Ratio Required For Capital Adequacy To Average Assets, Minimum Requirement SLR, supplementary leverage buffer Supplementary Leverage Ratio Required For Capital Adequacy To Average Assets, Supplementary Leverage Buffer Supplementary Leverage Ratio Required For Capital Adequacy To Average Assets, Supplementary Leverage Buffer Regulatory capital Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract] CET1 capital Common Equity Tier 1 Capital Common Equity Tier 1 Capital as defined by the regulators. Tier 1 capital Tier One Risk Based Capital Total capital Capital Risk-weighted Risk Weighted Assets Adjusted average Adjusted Average Assets Adjusted average assets, as calculated in accordance with U.S. federal regulatory capital standards. Capital ratios Risk Based Ratios [Abstract] CET1 Common Equity Tier 1 Capital to Risk Weighted Assets Common Equity Tier 1 Capital divided by risk weighted assets as defined by regulations. Tier 1 Tier One Risk Based Capital to Risk Weighted Assets Total Capital to Risk Weighted Assets Tier 1 leverage Tier One Leverage Capital to Average Assets Total leverage exposure Total Leverage Exposure Total Leverage Exposure SLR Supplementary Leverage Ratio Goodwill attributed to the business segments Schedule of Goodwill [Table Text Block] Mortgage servicing rights activity Mortgage Servicing Rights Fair Value Roll Forward Text Block [Table Text Block] Mortgage Servicing Rights roll forward showing the reconciliation of the fair value of MSRs from the beginning of a period to the end of a period. CCB mortgage fees and related income Fees And Commissions, Mortgage Banking And Related, Components [Table Text Block] Fees, commissions and related income from Mortgage Banking activities. Key economic assumptions used to determine the fair value of the Firm's Mortgage Servicing Rights (MSRs) Mortgage Servicing Rights Fair Value Key Economic Assumptions Used To Determine Text Block [Table Text Block] Key economic assumptions used to determine the fair value of the Firm's Mortgage Servicing Rights. Put option Put Option [Member] Derivatives qualifying as guarantees Derivatives Qualifying As Guarantees [Member] This element represents types of derivative financial instruments qualifying as guarantees which are financial instruments or other contractual arrangements with all three of the following characteristics: (a) it has (1) one or more underlyings and (2) one or more notional amounts or payment provisions or both. Those terms determine the amount of the settlement or settlements, and, in some cases, whether or not a settlement is required; (b) it requires no initial net investment or an initial net investment that is smaller than would be required for other types of contracts that would be expected to have a similar response to changes in market factors; and (c) its terms require or permit net settlement, it can readily be settled net by a means outside the contract, or it provides for delivery of an asset that puts the recipient in a position not substantially different from net settlement. Notwithstanding the above characteristics, loan commitments that relate to the origination of mortgage loans that will be held for sale shall be accounted for as derivative instruments by the issuer of the loan commitment (that is, the potential lender). Term of written put option Derivative, Term of Contract Notional amounts Derivative guarantees Stable value contracts with contractually limited exposure Maximum exposure of stable value contracts with contractually limited exposure Derivatives Maximum Exposure To Loss Derivatives maximum exposure to loss. Fair value Derivatives Qualifying as Guarantees, Fair Value [Abstract] Derivatives Qualifying as Guarantees, Fair Value [Abstract] Derivative payables Derivative Qualifying As Guarantees Payables This element represents the payables portion of types of derivative financial instruments qualifying as guarantees which are financial instruments or other contractual arrangements with all three of the following characteristics: (a) it has (1) one or more underlyings and (2) one or more notional amounts or payment provisions or both. Those terms determine the amount of the settlement or settlements, and, in some cases, whether or not a settlement is required; (b) it requires no initial net investment or an initial net investment that is smaller than would be required for other types of contracts that would be expected to have a similar response to changes in market factors; and (c) its terms require or permit net settlement, it can readily be settled net by a means outside the contract, or it provides for delivery of an asset that puts the recipient in a position not substantially different from net settlement. Notwithstanding the above characteristics, loan commitments that relate to the origination of mortgage loans that will be held for sale shall be accounted for as derivative instruments by the issuer of the loan commitment (that is, the potential lender). Vesting [Axis] Vesting [Axis] Vesting [Domain] Vesting [Domain] 1st 50% Share-based Payment Arrangement, Tranche One [Member] 2nd 50% Share-based Payment Arrangement, Tranche Two [Member] Long-Term Incentive Plan PSUs Performance Shares [Member] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Employee stock-based awards general disclosures Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract] Shares of common stock available for issuance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Award vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Award vesting percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Holding period Share-based Compensation Arrangement by Share-based Payment Award, Award Holding Period Share-based Compensation Arrangement by Share-based Payment Award, Award Holding Period Combined vesting and holding period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting and Holding Period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting and Holding Period Award expiration period Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Gains/(losses) recorded in income Gain (Loss) on Fair Value Hedges Recognized in Earnings [Abstract] Derivatives Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments Hedged items Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge Income statement impact Gain (Loss) on Fair Value Hedges Recognized in Earnings Income statement impact of excluded components Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net [Abstract] Amortization approach Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), Adjustments, before Tax Changes in fair value Income statement impact due to: Gain (Loss) on Fair Value Hedge Ineffectiveness, Net [Abstract] Hedge ineffectiveness Gain (Loss) on Fair Value Hedge Ineffectiveness, Net Excluded components Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net OCI impact Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), after Adjustments, before Tax [Abstract] Derivatives - Gains/(losses) recorded in OCI Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments and Tax Firm-sponsored credit card trusts Firm Sponsored Credit Card Securitization Trusts [Member] Firm-sponsored Credit Card securitization trust. Firm-administered multi-seller conduits Mortgage securitization entities Mortgages [Member] Other Vie Program Type Other [Member] VIE Program Type Other. Trading assets Debt and equity securities [Member] Debt and equity securities Member. Information on assets and liabilities related to VIEs that are consolidated by the Firm [Abstract] Information on assets and liabilities related to Variable Interest Entities that are consolidated by the Firm Abstract Information on assets and liabilities related to VIEs that are consolidated by the Firm Abstract. Other Beneficial interests in VIE assets Other Beneficial interests in VIE assets, long term Beneficial Interest Liability, Long Term Long term obligation reflecting another party's right to economic interests in another entity or trust under a contractual right. For example, an investor may purchase a beneficial interest in a securitization transaction. Variable Interest Entities Variable Interest Entities And Transfers Of Financial Assets [Text Block] Disclosure of variable interest entities (VIE), including, but not limited to the nature, purpose, size, and activities of the VIE, the carrying amount and classification of consolidated assets that are collateral for the VIE's obligations, lack of recourse if creditors (or beneficial interest holders) of a consolidated VIE have no recourse to the general credit of the primary beneficiary. An enterprise that holds a significant variable interest in a VIE but is not the primary beneficiary may disclose the nature of its involvement with the VIE and when that involvement began, the nature, purpose, size, and activities of the VIE and the enterprise's maximum exposure to loss as a result of its involvement with the VIE. Also provides the disclosures pertaining to a transferor's continuing involvement in financial assets that it has transferred in a securitization or asset-backed financing arrangement, the nature of any restrictions on assets reported by an entity in its statement of financial position that relate to a transferred financial asset (including the carrying amounts of such assets), and (for securitization or asset-backed financing arrangements accounted for as sales) when a transferor has continuing involvement with the transferred financial assets, how the transfer of financial assets affects an entity's financial position, financial performance, and cash flows. Impaired loans Impaired Financing Receivable, Recorded Investment [Abstract] With an allowance Without an allowance Impaired Financing Receivable, with No Related Allowance, Recorded Investment Total impaired loans Impaired Financing Receivable, Recorded Investment Allowance for loan losses related to impaired loans Unpaid principal balance of impaired loans Impaired loans on nonaccrual status Impaired Financing Receivable, Recorded Investment, Nonaccrual Status Impaired Financing Receivable, Recorded Investment, Nonaccrual Status Loans modified subsequent to repurchase from Ginnie Mae Modified Loans Repurchased From U S Government Agencies Excluded From Troubled Debt Restructurings Loans that are repurchased from US government agencies, such as the Government National Mortgage Association (GNMA or Ginnie Mae), and modified subsequent to repurchase. These loans are excluded from loans accounted for as troubled debt restructurings. TDRs not having yet made six payments Loans and Leases Receivable, Impaired, Troubled Debt Restructurings Not Having Yet Made Six Payments Represents the carrying amount of loans with terms that have been modified in trouble debt restructurings that have not yet made six payments under the modified terms. Average impaired loans Interest income on impaired loans Interest income on impaired loans on a cash basis Impaired Financing Receivable, Interest Income, Cash Basis Method Fair Value Inputs Assets And Liabilities Quantitative Information [Table] Fair Value Inputs Assets And Liabilities Quantitative Information [Table] Schedule of the inputs used in the fair value measurement of assets and liabilities. This disclosure may include, but is not limited to, the fair value of the asset and liability, valuation technique used to measure fair value, the inputs used to measure fair value, the ranges of the inputs, and the weighted averages of the inputs. Measurement Input Type [Axis] Measurement Input Type [Axis] Measurement Input Type [Domain] Measurement Input Type [Domain] Yield Measurement Input, Discount Rate [Member] Prepayment speed Measurement Input, Prepayment Rate [Member] Conditional default rate Measurement Input, Default Rate [Member] Loss severity Measurement Input, Loss Severity [Member] Price Measurement Input, Price Per Unit [Member] Measurement Input, Price Per Unit [Member] Interest rate volatility Measurement Input, Interest Rate Volatility [Member] Measurement Input, Interest Rate Volatility [Member] Interest rate spread volatility Measurement Input, Interest Rate Spread Volatility [Member] Measurement Input, Interest Rate Spread Volatility [Member] Interest rate correlation Measurement Input, Interest Rate Correlation [Member] Measurement Input, Interest Rate Correlation [Member] IR-FX correlation Measurement Input, Correlation of Interest Rates to Foreign Exchange Rates [Member] Measurement Input, Correlation of Interest Rates to Foreign Exchange Rates [Member] Credit correlation Measurement Input, Credit Correlation [Member] Measurement Input, Credit Correlation [Member] Credit spread Measurement Input, Credit Spread [Member] Recovery rate Measurement Input, Recovery Rate [Member] Measurement Input, Recovery Rate [Member] Forward equity price Measurement Input, Forward Equity Price [Member] Measurement Input, Forward Equity Price [Member] Equity volatility Measurement Input, Equity Volatility [Member] Measurement Input, Equity Volatility [Member] Equity correlation Measurement Input, Equity Correlation [Member] Measurement Input, Equity Correlation [Member] Equity-FX correlation Measurement Input, Correlation of Equity to Foreign Exchange Rates [Member] Measurement Input, Correlation of Equity to Foreign Exchange Rates [Member] Equity-IR correlation Measurement Input, Correlation of Equity to Interest Rates [Member] Measurement Input, Correlation of Equity to Interest Rates [Member] Forward commodity price Measurement Input, Commodity Forward Price [Member] Commodity volatility Measurement Input, Price Volatility [Member] Commodity correlation Measurement Input, Commodity Correlation [Member] Measurement Input, Commodity Correlation [Member] Discounted cash flows Valuation Technique, Discounted Cash Flow [Member] Market comparables Valuation, Market Approach [Member] Option pricing Valuation Technique, Option Pricing Model [Member] Weighted Average Residential mortgage-backed securities and loans Residential Mortgage Backed Securities And Loans [Member] Loans, and Securities collateralized by residential real estate mortgage loans. Commercial mortgage-backed securities and loans Commercial Mortgage Backed Securites And Loans [Member] Loans, and Securities collateralized by commercial real estate mortgage loans. Obligations of U.S. states and municipalities Net interest rate derivatives Net foreign exchange derivatives Net equity derivatives Net commodity derivatives Residential mortgage-backed securities Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items] Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items] Debt securities and loans Debt Securities and Loans Receivable, Fair Value Disclosure Debt Securities and Loans Receivable, Fair Value Disclosure Debt securities and loans, measurement input Debt Securities and Loans Receivable, Measurement Input Debt Securities and Loans Receivable, Measurement Input Debt securities, trading Debt Securities, Trading Debt securities, trading, measurement input Debt Securities, Trading, Measurement Input Loans Loans, measurement input Loans Receivable, Measurement Input Loans Receivable, Measurement Input Net derivative asset (liability) Derivative Assets (Liabilities), at Fair Value, Net Net derivative asset (liability), measurement inputs Derivative Asset (Liability) Net, Measurement Input MSRs Other assets Other Assets, Fair Value Disclosure Other assets, measurement inputs Other Asset, Measurement Input Other Asset, Measurement Input Long-term debt, short-term borrowings, and deposits Long-term debt, short-term borrowings, and deposits, measurement inputs Financial and Nonfinancial Liabilities, Measurement Input Financial and Nonfinancial Liabilities, Measurement Input Other level 3 assets and liabilities, net Other Assets (Liabilities), Net, Fair Value Disclosure Other Assets (Liabilities), Net, Fair Value Disclosure Assumed par value for price input (in dollars per share) Fair Value Inputs, Price per Unit, Assumed Par Fair Value Inputs, Price per Unit, Assumed Par Federal funds sold and securities purchased under resale agreements Federal Funds Sold and Purchased under Agreements to Resell [Member] Federal Funds Sold and Purchased under Agreements to Resell [Member] Securities borrowed Securities Borrowed [Member] Securities Borrowed [Member] Debt and equity instruments, excluding loans Debt and Equity Instruments, Excluding Loans [Member] Debt and Equity Instruments, Excluding Loans [Member] Loans reported as trading assets: Changes in instrument-specific credit risk Loans Reported as Trading Assets, Changes in Instrument-Specific Credit Risk [Member] Loans Reported as Trading Assets, Changes in Instrument-Specific Credit Risk [Member] Loans reported as trading assets: Other changes in fair value Loans Reported as Trading Assets, Other Changes in Fair Value [Member] Loans Reported as Trading Assets, Other Changes in Fair Value [Member] Loans: Changes in instrument-specific credit risk Loans, Changes in Instruments-Specific Credit Risk [Member] Loans, Changes in Instruments-Specific Credit Risk [Member] Loans: Other changes in fair value Loans, Other Changes in Fair Value [Member] Loans, Other Changes in Fair Value [Member] Other assets Deposits Federal funds purchased and securities loaned or sold under repurchase agreements Federal Funds Purchased and Securities Sold under Agreements to Repurchase [Member] Short-term borrowings Short-term Debt [Member] Trading liabilities Trading Liabilities [Member] Other liabilities Other Liabilities [Member] Principal transactions Principal or Proprietary Transactions [Member] All other income Changes in fair value under the fair value option election Fair Value, Option, Partial Election Disclosures [Abstract] Fair value option, changes in fair value gain (loss) Schedule of revenue from external customers attributed to foreign countries by geographic area Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] Credit Risk Concentrations Concentration Risk Disclosure [Text Block] Fair Value Measured at Net Asset Value Per Share Certificates of deposit, bankers’ acceptances and commercial paper Certificates Of Deposit Bankers Acceptances Commercial Paper [Member] Represents a combination of certificates of deposit, bankers’ acceptances and commercial paper. A certificate of deposit ("CD") is a short to medium-term, FDIC insured investment available at banks and savings and loan institutions. Customers agree to lend money to the institutions for a certain amount of time. In exchange for doing so, the customers is paid a predetermined rate of interest. Often, banks will charge a penalty fee if the money is withdrawn from the CD before it matures. A banker's acceptance, which often is used to finance shipments of goods to bank customers, is a short-term time draft that a bank (drawee) has agreed to pay at maturity by stamping "accepted" over the signature of an officer. When the bank accepts the draft, it guarantees its redemption at maturity, which makes the draft negotiable. In return for the guarantee, the party on whose behalf the bank accepts the draft (drawer) agrees to provide the bank with the necessary funds prior to maturity. The bank receives a fee for creating the acceptance. The drawer's outstanding debt to the bank is reported as an asset, and the bank's obligation is reported as a liability. Bankers' acceptances are similar to other short-term borrowed funds in that they can be effectively used for short-term liquidity needs by avoiding disbursing funds for short-term loans to bank customers. Commercial paper is an unsecured promissory note that provides creditworthy institutions, typically finance companies or holding companies of banks and savings institutions with short-term funds. Commercial paper is generally short-term (at most 270 days, but usually much less) and negotiable. Asset-backed securities, collateralized loan obligations Asset-backed securities, other Other Asset-backed Securities [Member] Other Asset-backed Securities [Member] Physical commodities Commodities Investment [Member] Other Commercial mortgage Commercial Loan [Member] Residential conforming mortgage intended for sale to government agency Residential Conforming Mortgage Intended for Sale to Government Agency [Member] Conforming residential mortgage loans originated with the intent to sell to U.S. government agencies Assets and liabilities measured at fair value on a recurring basis [Abstract] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] Federal funds sold and securities purchased under resale agreements Federal Funds Sold and Securities Borrowed or Purchased under Agreements to Resell, Fair Value Disclosure Securities borrowed Securities Borrowed, Fair Value Disclosure Trading assets, debt and equity instruments Debt Securities, Trading, and Equity Securities, FV-NI Derivative receivables, gross Derivative netting adjustments Derivative receivables, net Trading assets Available-for-sale securities Mortgage servicing rights Other assets Other Assets, Excluding Net Asset Value, Fair Value Disclosure Other Assets, Excluding Net Asset Value, Fair Value Disclosure Total assets measured at fair value on a recurring basis Deposits Deposits, Fair Value Disclosure Federal funds purchased and securities loaned or sold under repurchase agreements Federal Funds Purchased and Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure Short-term borrowings Short-term Debt, Fair Value Trading liabilities, Debt and equity instruments Trading Liabilities, Excluding Derivatives, Fair Value Disclosure Trading Liabilities, Excluding Derivatives, Fair Value Disclosure Derivative payables, gross Derivative netting adjustments Derivative payables, net Trading liabilities Trading Liabilities, Fair Value Disclosure Accounts payable and other liabilities Accounts Payable and Accrued Liabilities, Fair Value Disclosure Beneficial interests issued by consolidated VIEs Long-term debt Total liabilities measured at fair value on a recurring basis Fair value assets and liabilities measured on recurring basis - supplemental data Fair Value Assets Measured On Recurring Basis Numeric [Abstract] Alternative investments, net asset value, fair value Alternative Investment Other assets Schedule of pledged assets Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block] Schedule of collateral received Schedule of Customer Securities for which Entity has Right to Sell or Repledge [Table Text Block] Amount of transfers accounted for as sale where associated derivative was outstanding Transfer of Financial Assets Accounted for as Sales, Amount Derecognized Off-balance Sheet Lending-related Financial Instruments, Guarantees, and Other Commitments Off Balance Sheet Lending Related Financial Instruments Guarantees And Other Commitments [Text Block] Description of lending related instruments and the allowance recorded to reflect obligations, contingent liabilities, guarantees, and other exposures relating to off-balance sheet arrangements such as unfunded loan commitments, contractual obligations, recourse from loans securitized, and variable interest entities. Basic earnings per share Earnings Per Share, Basic, Two Class Method [Abstract] Less: Preferred stock dividends Dividends, Preferred Stock Net income applicable to common equity Net Income Applicable to Common Equity Net income applicable to common equity before adjustments for participating securities. Less: Dividends and undistributed earnings allocated to participating securities Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Net income applicable to common stockholders Total weighted-average basic shares outstanding (in shares) Net income per share (in dollars per share) Diluted earnings per share Earnings Per Share, Diluted, Two Class Method [Abstract] Net income applicable to common stockholders Add: Dilutive impact of SARs and employee stock options, unvested PSUs and non-dividend-earning RSUs, and warrants (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Total weighted-average diluted shares outstanding (in shares) Net income per share (in dollars per share) Pledged Assets and Collateral Commitments Contingencies and Guarantees [Text Block] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Carrying value Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Financial assets Assets, Fair Value Disclosure [Abstract] Accrued interest and accounts receivable Accrued Interest And Accounts Receivable At Fair Value This element represents a certain statement of financial position asset caption which represents a class of assets, or which may include an individual asset, measured at fair value on a recurring basis. Federal funds sold and securities purchased under resale agreements Investment securities, held-to-maturity Loans, net of allowance for loan losses Other Financial liabilities Financial Liabilities Fair Value Disclosure [Abstract] Deposits Beneficial interests issued by consolidated VIEs Long-term debt and junior subordinated deferrable interest debentures Wholesale lending-related commitments Wholesale lending related commitments This item represents wholesale lending related commitments for which it is not practicable to estimate fair value. Transfers not qualifying for sale accounting Transfers Accounted for as Secured Borrowings, Assets, Carrying Amount Schedule of fair value methodologies Schedule of Fair Value Methodologies [Table Text Block] Schedule of Fair Value Methodologies [Table Text Block] Assets and liabilities measured at fair value on a recurring basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Fair value inputs, assets and liabilities, quantitative information Fair Value Inputs, Assets and Liabilities, Quantitative Information [Table Text Block] Fair Value Inputs, Assets and Liabilities, Quantitative Information [Table Text Block] Changes in level 3 recurring fair value measurements Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Table Text Block] This element represents, for the fair value measurement of assets and liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (net); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs). Impact of credit adjustments on earnings Credit Risk Adjustments On Derivative Assets And Liabilities And Debt Instruments Gains Losses Text Block [Table Text Block] This item represents the estimated amount of gains and losses from fair value changes included in earnings that are attributable to changes in the instrument-specific credit risk of derivatives assets and liabilities, and debt instruments with fair values that have been significantly affected during the reporting period by changes in the instrument-specific credit risk. Assets and liabilities measured at fair value on a nonrecurring basis Fair Value Measurements, Nonrecurring [Table Text Block] Carrying value of equity securities without readily determinable fair values Equity Securities without Readily Determinable Fair Value [Table Text Block] Carrying value and estimated fair value of financial assets and liabilities Fair Value, by Balance Sheet Grouping [Table Text Block] The carrying value and estimated fair value of wholesale lending- related commitments Carrying Value And Estimated Fair Value Of Wholesale Lending Related Commitments [Table Text Block] This element represents the carrying value and estimated fair value of wholesale lending- related commitments. Series P Series P Preferred Stock [Member] Series P Preferred Stock. Series T Series T Preferred Stock [Member] Series T Preferred Stock. Series W Series W Preferred Stock [Member] Series W Preferred Stock. Series Y Series Y Preferred Stock [Member] Series Y Preferred Stock. Series AA Series AA Preferred Stock [Member] Series AA Preferred Stock [Member] Series BB Series BB Preferred Stock [Member] Series BB Preferred Stock [Member] Series DD Series DD Preferred Stock [Member] Series DD Preferred Stock [Member] Series EE Series EE Preferred Stock [Member] Series EE Preferred Stock [Member] Series GG Series GG Preferred Stock [Member] Series GG Preferred Stock [Member] Series I Series I Preferred Stock [Member] Series I Preferred Stock. Series Q Series Q Preferred Stock [Member] Series Q Preferred Stock. Series R Series R Preferred Stock [Member] Series R Preferred Stock. Series S Series S Preferred Stock [Member] Series S Preferred Stock. Series U Series U Preferred Stock [Member] Series U Preferred Stock. Series V Series V Preferred Stock [Member] Series V Preferred Stock. Series X Series X Preferred Stock [Member] Series X Preferred Stock. Series Z Series Z Preferred Stock [Member] Series Z Preferred Stock [Member] Series CC Series CC Preferred Stock [Member] Series CC Preferred Stock [Member] Series FF Series FF Preferred Stock [Member] Series FF Preferred Stock [Member] Series II Series II Preferred Stock [Member] Series II Preferred Stock [Member] Series HH Series HH [Member] Series HH [Member] Series O Series O Preferred Stock [Member] Series O Preferred Stock. Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Three-month LIBOR London Interbank Offered Rate (LIBOR) [Member] Term SOFR Secured Overnight Financing Rate (SOFR) [Member] Secured Overnight Financing Rate (SOFR) [Member] Scenario [Axis] Scenario [Axis] Scenario [Domain] Scenario [Domain] Forecast Forecast [Member] Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Shares of preferred stock authorized to issue, in one or more series (in shares) Preferred Stock, Shares Authorized Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Shares (in shares) Preferred Stock, Shares Issued Carrying value Issue date Preferred Stock Issue Date The preferred stock issue date. Contractual rate in effect Preferred Stock, Dividend Rate, Percentage Earliest redemption date Preferred Stock, Earliest Redemption Date The earliest date the preferred stock can be redeemed. Preferred stock dividend rate, variable, description of basis Dividend, Description of Variable Rate Basis The reference rate for the variable rate used to determine the dividend rate. Preferred stock dividend rate, variable, basis spread Dividend, basis spread on variable rate The percentage points added to the reference rate to compute the dividend rate. Dividend declared per share (in dollars per share) Preferred Stock, Dividends Per Share, Declared Liquidation value and redemption price per share (in dollars per share) Preferred Stock, Redemption Price Per Share Aggregate liquidation value Preferred Stock, Liquidation Preference, Value Preferred stock, shares redeemed Stock Redeemed or Called During Period, Value Preferred stock, shares issued Stock Issued During Period, Value, New Issues Employee Share-Based Incentives Share-based Payment Arrangement [Text Block] Total structured notes Structured Notes Balance Under Fair Value Option This item represents disclosure of all significant concentrations of credit risk arising from structured notes, whether from an individual counterparty or groups of counterparties. Securities Debt Securities, Available-for-sale and Held-to-maturity [Member] Debt Securities, Available-for-sale and Held-to-maturity [Member] Assets pledged Preferred stock, shares authorized (in shares) Preferred stock, shares issued (in shares) Common stock, shares issued (in shares) Shares held in Trust, shares (in shares) Common Stock Held In Restricted Stock Unit Trust Shares Number of common stock shares held in an irrevocable grantor trust (the "RSU Trust") to be used for settlement of stock awards granted to selected employees and certain key executives under a restricted stock unit plan. Treasury stock, shares (in shares) Securities Financing Transaction [Axis] Securities Financing Transaction [Axis] Securities Financing Transaction [Domain] Securities Financing Transaction [Domain] Securities-For-Securities Securities-For-Securities Borrow Versus Pledge Transactions [Member] Carrying value of securities loaned where the lender of securities recevied other securities as collateral in a securities lending transaction. Securities purchased under resale agreements, Gross amounts Securities Purchased under Agreements to Resell, Gross Including Not Subject to Master Netting Arrangement Securities purchased under resale agreements, Amounts netted on the Consolidated balance sheets Securities Purchased under Agreements to Resell, Liability Securities purchased under resale agreements, Amounts presented on the Consolidated balance sheets Securities Purchased under Agreements to Resell Securities purchased under resale agreements, Amounts not nettable on the Consolidated balance sheets Securities Purchased under Agreements to Resell, Fair Value of Collateral Securities purchased under resale agreements, Net amounts Securities Purchased under Agreements to Resell, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election Securities borrowed, Gross amounts Securities Borrowed, Gross Including Not Subject to Master Netting Arrangement Securities borrowed, Amounts netted on the Consolidated balance sheets Securities Borrowed, Liability Securities borrowed, Amounts presented on the Consolidated balance sheets Securities borrowed, Amounts not nettable on the Consolidated balance sheets Securities Borrowed, Fair Value of Collateral Securities borrowed, Net amounts Securities Borrowed, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election Securities sold under repurchase agreements, Gross amounts Securities sold under repurchase agreements, Amounts netted on the Consolidated balance sheets Securities Sold under Agreements to Repurchase, Asset Securities sold under repurchase agreements, Amounts presented on the Consolidated balance sheets Securities Sold under Agreements to Repurchase Securities sold under repurchase agreements, Amounts not nettable on the Consolidated balance sheets Securities Sold under Agreements to Repurchase, Fair Value of Collateral Securities sold under repurchase agreements, Net amounts Securities Sold under Agreements to Repurchase, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election Securities loaned and other, Gross amounts Securities loaned and other, Amounts netted on the Consolidated balance sheets Securities Loaned, Asset Securities loaned and other, Amounts presented in the Consolidated balance sheets Securities Loaned Securities loaned and other, Amounts not nettable on the Consolidated balance sheets Securities Loaned, Fair Value of Collateral Securities loaned and other, Net amounts Securities Loaned, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election Securities purchased under resale agreements where an appropriate legal opinion has not been either sought or obtained, Gross asset balance Securities Purchased under Agreements to Resell, Not Subject to Master Netting Arrangement Securities borrowed where an appropriate legal opinion has not been either sought or obtained Securities Borrowed, Not Subject to Master Netting Arrangement Deduction Securities sold under agreements to repurchase Securities Sold under Agreements to Repurchase, Not Subject to Master Netting Arrangement Securities loaned and other Securities Loaned, Not Subject to Master Netting Arrangement Deduction Weighted-average interest rate of loans with interest rate reductions – before TDR Weighted-average interest rate of loans with interest rate reductions – after TDR Weighted-average remaining contractual term (in years) of loans with term or payment extensions – before TDR Financing Receivable, Modifications, Pre-Modification, Weighted-Average Remaining Term of Financing Receivables With Term Or Payment Extensions Financing Receivable, Modifications, Pre-Modification, Weighted-Average Remaining Term of Financing Receivables With Term Or Payment Extensions Weighted-average remaining contractual term (in years) of loans with term or payment extensions – after TDR Financing Receivable, Modifications, Post-Modification, Weighted-Average Remaining Term of Financing Receivables With Term Or Payment Extensions Financing Receivable, Modifications, Post-Modification, Weighted-Average Remaining Term of Financing Receivables With Term Or Payment Extensions Charge-offs recognized upon permanent modification Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down Principal deferred Financing Receivable, Modifications, Principal Deferred Amount of principal deferred in financing receivables that have been modified by troubled debt restructurings that occurred. Principal forgiven Financing Receivable, Modifications, Principal Forgiven Amount of principal forgiven in financing receivables that have been modified by troubled debt restructurings that occurred. Balance of loans that redefaulted within one year of permanent modification Number of payments past due for deemed payment Number of Payments Past Due for Deemed Payment Default The number of contractual payments past due needed before a payment default is deemed to occur. Number of months before a payment redefault under modified loans Number of Months Before a Payment Redefault Under Modified Loan Number of months before a payment redefault under a modified loan. Modifications, weighted-average remaining life Financing Receivable, Modifications, Weighted-Average Remaining Life Financing Receivable, Modifications, Weighted-Average Remaining Life Qualitative and Quantitative Information, Transferor's Continuing Involvement in Transferred Financial Assets, Transfer or Transferee [Domain] Senior securities Senior Securities [Member] Senior Securities [Member] Subordinated securities Subordinated Securities [Member] Subordinated Securities [Member] Minimum undivided interest in credit card trusts Average undivided interest in principal receivables, Percentage The percentage of average undivided interest in principal receivables owned by credit card trusts that are sponsored by the entity. Undivided interests in Firm-sponsored credit card securitization trusts Derivative payables Derivative Financial Instruments, Liabilities [Member] Liability Liability [Member] Derivative receivables Derivative Financial Instruments, Assets [Member] Trading loans Transfers from level 2 into level 3, liabilities Transfers from level 2 into level 3, assets Transfers from level 3 into level 2, liabilities Transfers from Level 3 into level 2, assets Accumulated Other Comprehensive Income/(Loss) Comprehensive Income (Loss) Note [Text Block] Components of accounts payable and other liabilities Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Leases Lessee, Operating Leases [Text Block] Leases Lessor, Direct Financing Leases [Text Block] Percentage exceeding value of securities for obtaining cash or other highly liquid collateral Percentage of Cash or Liquid Collateral Relative to Value of Securities on Loan The percentage of cash or other highly liquid collateral obtained by the Firm as part of an indemnification agreement relative to the value of securities on loan from the borrower as part of a securities lending program. Percentage exceeding value of resale agreements for obtaining collateral Percentage of Collateral Relative to Value of Resale Agreements Percentage of Collateral Relative to Value of Resale Agreements Parent Company Condensed Financial Information of Parent Company Only Disclosure [Text Block] Designated as hedges Designated as Hedging Instrument [Member] Gross derivative receivables Net derivative receivables Gross derivative payables Net derivative payables Merchant Services Merchant Services [Member] Merchant Services [Member] JPMorgan Chase Financial Company LLC Other off-balance sheet arrangements - supplemental information [Abstract] Off balance sheet lending related financial instruments guarantees and other commitments - supplemental information [Abstract] Off Balance Sheet Lending Related Financial Instruments Guarantees And Other Commitments Numeric Abstract. Aggregate volume processed by electronic payment services business AggregateVolumeProcessedByElectronicPaymentServicesBusiness Aggregate volume processed by electronic payment services business. Direct-owned finance subsidiary ownership Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest Projected decrease in expense due to increased discount rates Projected Decrease In US Defined Benefit Pension And OPEB Plan Expense Resulting From Increased Discount Rates For Benefit Obligations Projected Decrease In US Defined Benefit Pension And OPEB Plan Expense Resulting From Increased Discount Rates For Benefit Obligations Expected long-term rate of return on plan assets Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Plan Assets, Next Fiscal Year An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation for the next fiscal year. Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating Segments Operating Segments [Member] Reconciling Items Segment Reconciling Items [Member] Corporate Corporate, Non-Segment [Member] Segment results and reconciliation Segment Results and Reconciliation [Abstract] Segment results and reconciliation. Noninterest revenue Net interest income Noninterest expense Income tax expense/(benefit) Average equity Segment Reporting Information Average Common Equity Amount of average common equity attributed to the reportable segment. Total assets Return on equity Segment Reporting Information, Return on average common equity Return on average common equity attributed to the reportable segment. Overhead ratio Segment Reporting Information Overhead Ratio Overhead ratio attributed to the reportable segment. Tax benefit related to tax-oriented investments as a result of the TCJA Tax Cuts And Jobs Act of 2017, Incomplete Accounting, Change In Tax Rate, Investments, Provisional Income Tax Expense (Benefit) Tax Cuts And Jobs Act of 2017, Incomplete Accounting, Change In Tax Rate, Investments, Provisional Income Tax Expense (Benefit) Schedule of condensed financial information of Parent Company-only Condensed Financial Statements [Table Text Block] Days Past Due, 60 or More Days Past Due, 60 or More [Member] Retained loans that are greater than 60 days past due. Total consumer Consumer Loan [Member] Total consumer, excluding credit card Consumer Loan Excluding Credit Card [Member] Any loan or extension of credit to an individual for personal, family, or household use, excluding the amounts of receivables from issuing a credit card. Home equity Total wholesale Other unfunded commitments to extend credit Other Unfunded Commitments To Extend Credit Member Other unfunded commitments to extend credit. Securities lending indemnification agreements and guarantees Securities Lending Indemnifications [Member] Securities lending indemnifications. Unsettled resale and securities borrowed agreements Unsettled Reverse Repurchase and Securities Borrowing Agreements [Member] This represents the amount of commitments to enter into reverse repurchase and securities borrowing agreements. Unsettled repurchase and securities loaned agreements Unsettled repurchase and securities lending agreements [Member] Unsettled repurchase and securities lending agreements [Member] Exchange & clearing house guarantees and commitments Exchange and Clearing House Guarantees and Commitments [Member] Exchange and Clearing House Guarantees and Commitments [Member] Other guarantees and commitments Other Guarantees and Commitments [Member] Other Guarantees And Commitments. Warranty Reserves SEC Schedule, 12-09, Reserve, Warranty [Member] Line of credit close criteria, period past due Line of Credit Close Criteria, Period Past Due The period of time for which existing loans outstanding from a borrower are past-due before the borrower's line-of-credit is closed. Off-balance sheet lending-related financial commitments, Contractual amount, Expiring in 1 year or less Off-Balance Sheet Lending-Related Financial Commitments, Contractual Amount, Expiring in Less Than One Year The contractual amount of off-balance sheet lending-related financial instruments (e.g., commitments and guarantees), expiring in less than one year, which represents the maximum possible credit risk should the counterparty draw upon the commitment or the entity be required to fulfill its obligation under the guarantee, and the counterparty subsequently fail to perform according to the terms of the contract. Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 1 year through 3 years Off-Balance Sheet Lending-Related Financial Commitments, Contractual Amount, Expiring Between One and Three One Years The contractual amount of off-balance sheet lending-related financial instruments (e.g., commitments and guarantees), expiring between one and three years, which represents the maximum possible credit risk should the counterparty draw upon the commitment or the entity be required to fulfill its obligation under the guarantee, and the counterparty subsequently fail to perform according to the terms of the contract. Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 3 years through 5 years Off-Balance Sheet Lending-Related Financial Commitments, Contractual Amount, Expiring Between Three and Five Years The contractual amount of off-balance sheet lending-related financial instruments (e.g., commitments and guarantees), expiring between three and five years, which represents the maximum possible credit risk should the counterparty draw upon the commitment or the entity be required to fulfill its obligation under the guarantee, and the counterparty subsequently fail to perform according to the terms of the contract. Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 5 years Off-Balance Sheet Lending-Related Financial Commitments, Contractual Amount, Expiring in More Than Five Years The contractual amount of off-balance sheet lending-related financial instruments (e.g., commitments and guarantees), expiring in more than five years, which represents the maximum possible credit risk should the counterparty draw upon the commitment or the entity be required to fulfill its obligation under the guarantee, and the counterparty subsequently fail to perform according to the terms of the contract. Off-balance sheet lending-related financial commitments, Carrying value Other guarantees and commitments, Contractual amount Other guarantees and commitments, Contractual amount, Expiring in 1 year or less Guarantor Obligations, Maximum Exposure, Undiscounted, Expiring in Less Than One Year Maximum potential amount of future payments (undiscounted), expiring in less than one year, the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. Other guarantees and commitments, Contractual amount, Expiring after 1 year through 3 years Guarantor Obligations, Maximum Exposure, Undiscounted, Expiring Between One and Three Years Maximum potential amount of future payments (undiscounted), expiring between one and three years, the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. Other guarantees and commitments, Contractual amount, Expiring after 3 years through 5 years Guarantor Obligations, Maximum Exposure, Undiscounted, Expiring Between Three and Five Years Maximum potential amount of future payments (undiscounted), expiring between three and five years, the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. Other guarantees and commitments, Contractual amount, Expiring after 5 years Guarantor Obligations, Maximum Exposure, Undiscounted, Expiring in More Than Five Years Maximum potential amount of future payments (undiscounted), expiring in more than five years, the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. Other guarantees and commitments, Carrying value Loan sale and securitization-related indemnifications, Mortgage repurchase liability, Carrying value Loan sale and securitization-related indemnifications, Loans sold with recourse, Contractual amount Loan sale and securitization-related indemnifications, Loans sold with recourse, Carrying value Other guarantees and commitments, Carrying value Off balance sheet lending related financial instruments guarantees and other commitments - supplemental information [Abstract] Risk participations for other unfunded commitments to extend credit Off Balance Sheet Lending Related Commitments Wholesale Contractual Amount Net Of Risk Participations Other Unfunded Commitments To Extend Credit Wholesale off-balance sheet contractual amount of lending-related commitments net of risk participations for other unfunded commitments to extend credit. Risk participations for standby letters of credit and other financial guarantees Off balance sheet Lending related commitments Wholesale Contractual amount Net of Risk Participations Standby letters of credit and other financial guarantees Wholesale off-balance sheet contractual amount of lending-related commitments net of risk participations for standby letters of credit and other financial guarantees. Risk participations for other letters of credit Off balance sheet Lending related commitments Wholesale Contractual amount Net of Risk Participations Other letters of credit Wholesale off-balance sheet contractual amount of lending-related commitments net of risk participations for other letters of credit. Indemnification agreement securities lending guarantees collateral held in support of Indemnification Agreement Securities Lending Guarantees Collateral Held In Support Of Collateral held in support of securities lending indemnification agreements. Impaired loans on nonaccrual status Loans modified in TDRs Financing Receivable, Troubled Debt Restructuring TDRs on nonaccrual status Financing Receivable, Modifications, Recorded Investment, Nonaccrual Status Financing Receivable, Modifications, Recorded Investment, Nonaccrual Status Concentration Risk [Table] Concentration Risk [Table] Receivables from customers Receivables From Customers Sector [Member] Receivables From Customers Sector [Member] Wholesale-related Loans Retained Sector [Member] Loans Retained Sector Real Estate Individuals and Individual Entities Individuals and Individual Entities Sector [Member] Individuals and Individual Entities Sector [Member] Consumer & Retail Consumer and Retail Sector [Member] Consumer and Retail Sector [Member] Technology, Media & Telecommunications Technology Sector [Member] Industrials Asset Managers Asset Managers Sector [Member] Asset Managers Sector [Member] Banks & Finance Cos Healthcare Healthcare Sector [Member] Oil & Gas Oil and Gas Sector [Member] Oil and Gas Sector [Member] Utilities Utilities Sector [Member] Utilities Sector [Member] State & Municipal Govt State and Municipal Government Sector [Member] State and Municipal Government Sector [Member] Automotive Automotive Sec [Member] Automotive Sec [Member] Chemicals & Plastics Chemicals and Plastics Sector [Member] Chemicals and Plastics Sector [Member] Metals & Mining Metals and Mining Sector [Member] Metals and Mining Sector [Member] Central Govt Central Government Sector [Member] Central Government Sector [Member] Transportation Transportation Sector [Member] Transportation Sector [Member] Insurance Insurance Sector [Member] Insurance Sector [Member] Securities Firms Securities Firms Sector [Member] Securities Firms Sector [Member] Financial Markets Infrastructure Financial Markets Infrastructure Sector [Member] Financial Markets Infrastructure Sector [Member] All other Other Sector [Member] Other Sector [Member] Loans held-for-sale and loans at fair value Loans Held-for-Sale and Loans At Fair Value Sector [Member] Loans Held-for-Sale and Loans At Fair Value Sector [Member] Consumer Consumer Portfolio Segment [Member] Consumer, excluding credit card Consumer, Excluding Credit Card Portfolio Segment [Member] Consumer, Excluding Credit Card Portfolio Segment [Member] Concentration Risk by Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Credit Concentration Risk Credit Concentration Risk [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Credit Exposure, Secured by Highly Liquid Forms of Collateral Credit Exposure, Secured by Highly Liquid Forms of Collateral [Member] Credit Exposure, Secured by Highly Liquid Forms of Collateral [Member] Credit Exposure, Secured by Less Liquid Forms of Collateral Credit Exposure, Secured by Less Liquid Forms of Collateral [Member] Credit Exposure, Secured by Less Liquid Forms of Collateral [Member] Concentration Risk [Line Items] Concentration Risk [Line Items] Credit exposure Concentration Risk, Credit Risk, Financial Instruments, Credit Exposure The amount of credit exposure from on- and off-balance sheet financial instruments that make up the concentration. On-balance sheet, Loans On-balance sheet, Derivatives Off-balance sheet Off Balance Sheet Lending Related Financial Instruments Contractual Amount The contractual amount of off-balance sheet lending-related financial instruments (e.g., commitments and guarantees), which represents the maximum possible credit risk should the counterparty draw upon the commitment or the entity be required to fulfill its obligation under the guarantee, and the counterparty subsequently fail to perform according to the terms of the contract. Trading assets Held-to-maturity securities Percentage of exposure secured Concentration Risk, Percentage Cash placed with banks Cash Placed with Banks Cash (excluding cash held at the Firm), cash due from other banks, and deposits placed with other banks. Securitization entities not consolidated Variable Interest Entity (VIE) or Potential VIE, Information Unavailability [Member] Securitization activity [Abstract] Securitization Activity [Abstract] Securitization activity. Principal securitized Principal Amount Of Financial Assets Sold In Securitizations The principal amount of financial assets transferred during the period in securitizations accounted for as sales. All cash flows during the period: Cash Flows Between Transferor and Transferee [Abstract] Proceeds received from loan sales as financial instruments Cash Flows Between Transferor and Transferee, Proceeds from New Transfers Servicing fees collected Cash Flows Between Transferor and Transferee, Servicing Fees Cash flows received on interests Cash Flows Between Transferor and Transferee, Receipts on Transferor's Interest in Transferred Financial Assets, Other Weighted-average life (in years) Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities, Weighted Average Life Weighted-average discount rate Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities, Discount Rate Entity-Wide Disclosure on Geographic Areas, Revenue from External Customers Attributed to Individual Foreign Countries [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Total international Total International [Member] Total international Europe/Middle East/Africa EMEA [Member] Asia-Pacific Asia Pacific [Member] Latin America/Caribbean Latin America [Member] North America North America [Member] U.K. UNITED KINGDOM Entity-Wide Information by Geographic Areas Revenues from External Customers and Long-Lived Assets [Line Items] Revenue Expense Noninterest Expense And Provision For Loan Lease And Other Losses Total aggregate amount of all noninterest expense and the sum of the periodic provision charged to earnings, based on an assessment of uncollectibility from the counterparty on account of loan, lease or other credit losses, to reduce these accounts to the amount that approximates their net realizable value. Income before income tax expense Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Credit Derivatives - supplemental information Summary of Credit Derivatives [Abstract] Tranche credit default swap realized credit loss protection Tranche Credit Default Swap Realized Credit Loss Protection Tranche Credit Default Swap Realized Credit Loss Protection Tranche credit default swap portfolio of exposure Tranche Credit Default Swap Portfolio of Exposure Tranche Credit Default Swap Portfolio of Exposure Credit Derivatives by Contract Type [Axis] Credit Derivatives Contract Type [Axis] Credit Derivatives Contract Type [Domain] Credit Derivatives Contract Type [Domain] Total credit derivatives Total Credit Derivatives [Member] Total freestanding credit derivatives. Credit default swaps Credit Default Swap [Member] Other credit derivatives Other Credit Derivatives [Member] Credit-related notes Hybrid Instrument [Member] Total credit derivatives and credit-related notes Total credit derivatives and credit related notes Abstract Total credit derivatives and credit-related notes. Protection sold Protection purchased with identical underlyings Credit Derivatives, Purchased Credit Protection Describes, in the context of the estimate of potential recoveries, any purchased credit protection with identical underlying(s). Net protection (sold)/purchased Net Protection Sold Purchased The amount of credit protection sold net of the amount of credit protection purchased with identical underlyings. This does not take into account the fair value of the reference obligation at the time of settlement, which would generally reduce the amount the seller of protection pays to the buy of protection in determining settlement value. Other protection purchased Credit Derivative Other Protection Purchased The amount of single-name and index credit default swap protection purchased (excludes protection purchased with identical underlyings). Gains (losses) on sales of loans Gain (Loss) on Sales of Loans, Net Summary of loan sale activities [Abstract] Summary Of Loan Sale Activities Abstract Summary Of Loan Sale Activities. Carrying value of loans sold Mortgage Loan Related to Property Sales Proceeds received from loan sales as cash Proceeds from Sale of Mortgage Loans Held-for-sale Proceeds from loan sales as securities Securities Proceeds From Sale Of Mortgage Loans Securities proceeds received from the sale of originated and purchased mortgage loans. Total proceeds received from loan sales Proceeds From Sale Of Mortgage Loans Proceeds received from the sale of originated and purchased mortgage loans. Gains/(losses) on loan sales Gain (Loss) on Sale of Mortgage Loans Interest Income and Interest Expense Interest Income and Interest Expense Disclosure [Text Block] Tax credit and other tax benefits Affordable Housing Tax Credits and Other Tax Benefits, Amount Amount of amortization reported in income tax expense Amortization Method Qualified Affordable Housing Project Investments, Amortization Carrying value of investments, reported in other assets Amortization Method Qualified Affordable Housing Project Investments Amount of commitments, reported in account payable and other liabilities Qualified Affordable Housing Project Investments, Commitment Troubled debt restructurings Deposits Deposit Liabilities Disclosures [Text Block] Long-term Debt, Fiscal Year Maturity [Abstract] Long-term Debt, Fiscal Year Maturity [Abstract] 2020 2021 2022 2023 2024 Reimbursements from income taxes paid on behalf of certain subsidiaries Income Taxes Paid on Behalf of Subsidiaries, Reimbursements Income Taxes Paid on Behalf of Subsidiaries, Reimbursements Distributions received as return of capital Proceeds from Subsidiary, Distribution, Return of Capital Proceeds from Subsidiary, Distribution, Return of Capital Components of investment banking fees Components Of Investment Banking Fees [Table Text Block] Components Of Investment Banking Fees [Table Text Block] Principal transactions revenue Schedule of Principal Transactions Revenue [Table Text Block] Components of lending and deposit-related fees Components of Lending Related and Deposit Related Fees [Table Text Block] Components of Lending Related and Deposit Related Fees [Table] Components of asset management, administration and commissions Components Of Asset Management Administration And Commissions Text Block [Table Text Block] Components of asset management, administration and commissions. Combination of: 1) Revenue recognized in the period for (A) performance (incentive) fees based on the investment results achieved for management of certain institutional accounts and hedge funds, (B) schedule-based fees earned for management of mutual funds and closed-end funds, based either on average daily net assets or on a combination of the average daily net assets and gross income, and (C) other investment management and advisory fees. 2) Acting as an agent, a broker-dealer may buy and sell securities on behalf of its customers. In return for such services, the broker-dealer charges a commission. Each time a customer enters into a buy or sell transaction, a commission is earned by the broker-dealer for its selling and administrative efforts. For securities purchased, the commission is recorded as a receivable from customers; for securities sold, it is recorded as reductions in the payable to customers. Commissions earned are usually related to the broker-dealer's customers' trading volume and the dollar amounts of the trades. In general, commissions are for smaller trades of exchange-listed stocks and bonds made by retail customers. 3)Income from services rendered by trust departments or by any consolidated subsidiaries acting in a fiduciary capacity, including fees earned for (A) acting as an agent for fiduciary placement and loans and (B) custody or investment advisory services when such fees are not separately billed to the customer. This item excludes commissions and fees received for the accumulation or disbursement of funds deposited to Individual Retirement or Keogh plan accounts when such are not handled by the reporting entity's trust department. 4) Income from agency and brokerage operations (includes sales of annuities and supplemental contracts); service charges, commissions, and fees from the sale of insurance and related services; and management fees from separate accounts, deferred annuities, and universal life products. 5) Revenues from providing transfer agent services to corporations. Such services include maintaining records of investors and account balances and transactions, canceling and issuing certificates, processing investor mailings and dealing with any associated problems (i.e. lost or stolen certificates). 6) Service revenue earned by a depository institution that holds the account balances of other financial institutions and provides services thereto. Such services include check collection and item processing. 7) Fee and commission revenue earned from sources not otherwise specified in the existing taxonomy, such as ADR fees, fund accounting fees, etc. Schedule of components of card income Disaggregation of Revenue [Table Text Block] Components of noninterest expense Components Of Noninterest Expense [Table Text Block] Disclosure of details of items comprising noninterest expense. Common Stock Stockholders' Equity Note Disclosure [Text Block] Changes in level 3 fair value measurements using significant unobservable inputs Actual return on plan assets, Realized gains/(losses) Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Actual Return (Loss) on Plan Assets Sold Actual return on plan assets, Unrealized gains/(losses) Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Actual Return (Loss) on Plan Assets Still Held Purchases, sales and settlements, net Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Purchase, Sale, and Settlement Transfers in and/or out of level 3 Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Assets Transferred into (out of) Level 3 HELOCs Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Within the revolving period Home Equity Line of Credit, Amortization Status, Revolving Period [Member] Indicates that a home equity line of credit is currently within its revolving period. Beyond the revolving period Home Equity Line of Credit, Amortization Status, Amortization Period [Member] Indicates that a home equity line of credit is currently within its amortization period. Amortization period Home Equity Line of Credit, Amortization Period After conversion from a revolving loan, the home equity line of credit new loan amortization period. Percent above which amortization of net gains and losses is included in annual net periodic benefit cost Defined Benefit Plan Percent Above Which Amortization Of Net Gains And Losses Is Included In Annual Net Periodic Benefit Cost For a defined benefit plan, the percent above which amortization of net gains and losses is included in annual net periodic benefit cost Average future service period Average Future Service Period Average Future Service Period Over Which Excess Gain or Loss is Amortized Average expected lifetime of plan participants Defined Benefit Plan, Average Expected Lifetime of Plan Participants Defined Benefit Plan, Average Expected Lifetime of Plan Participants Period over which the firm uses a calculated value that recognizes changes in fair value to determine expected return on plan assets The Period Over Which The Firm Uses A Calculated Value That Recognizes Changes In Fair Value To Determine Expected Return On Plan Assets The Period Over Which The Firm Uses A Calculated Value That Recognizes Changes In Fair Value To Determine Expected Return On Plan Assets Right-of-use assets Lease liabilities Weighted average remaining lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Supplemental cash flow information Lessee, Operating Lease, Supplemental Cash Flow Information [Abstract] Lessee, Operating Lease, Supplemental Cash Flow Information [Abstract] Cash paid for amounts included in the measurement of lease liabilities - operating cash flows Operating Lease, Payments Supplemental non-cash information Lessee, Operating Lease, Supplemental Non-Cash Flow Information [Abstract] Lessee, Operating Lease, Supplemental Non-Cash Flow Information [Abstract] Right-of-use assets obtained in exchange for operating lease obligations Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Rental expense Lease, Cost [Abstract] Gross rental expense Operating Lease, Cost Sublease rental income Sublease Income Net rental expense Lease, Cost Preferred stock Preferred Stock Including Additional Paid in Capital [Member] Additional paid-in capital Additional Paid-in Capital [Member] Accumulated other comprehensive income Shares held in RSU Trust, at cost Common Stock Held in Trust [Member] Value of common stock held in trust. Treasury stock, at cost Increase (Decrease) in Stockholders' Equity [Roll Forward] Issuance Redemption Shares issued and commitments to issue common stock for employee share-based compensation awards, and related tax effects APIC, Share-based Payment Arrangement, Recognition and Exercise Other Adjustments to Additional Paid in Capital, Other Dividends declared: Dividends [Abstract] Preferred stock Dividends, Preferred Stock, Cash Common stock ($3.40, $2.72 and $2.12 per share for 2019, 2018 and 2017, respectively) Dividends, Common Stock, Cash Other comprehensive income/(loss), after-tax Repurchase Reissuance Stock Issued During Period, Value, Treasury Stock Reissued Summary of RSUs, PSUs, and employee SARs and stock options activity Share-based Payment Arrangement, Activity [Table Text Block] Noncash compensation expense related to employee share-based incentive plans Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Components of restricted cash Restrictions on Cash and Cash Equivalents [Table Text Block]