Credit Quality Indicator For Loans And Receivables [Domain] Credit Quality Indicator For Loans And Receivables [Domain] Credit Quality Indicator For Loans And Receivables Statistical Measurement [Domain] Statistical Measurement [Domain] Investment Securities Investment, Policy [Policy Text Block] Settled Litigation Settled Litigation [Member] Cash collateral netting, assets Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash, Offset Against Derivative Asset Award Timing Predetermined Award Timing Predetermined [Flag] Proportional amortization recognized in tax provision Investment Program, Proportional Amortization Method, Applied, Amortization Expense Entity File Number Entity File Number Additional Paid-in Capital Additional Paid-in Capital [Member] Lease obligation incurred Lease Obligation Incurred David Moskowitz, etal David Moskowitz, etal [Member] David Moskowitz, etal Principal Provisions for financing receivable deductions net write offs principal [Member] Service Fees and Other Revenue and Other Expenses Other Income and Other Expense Disclosure [Text Block] Consumer Consumer Borrower [Member] Tabular List, Table Tabular List [Table Text Block] Tax expense (benefit) Other Comprehensive Income (Loss), Tax 2025/2024 Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year Recently Issued Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Total gross write-offs Net write-offs Financing Receivable, Allowance for Credit Loss, Writeoff Estimated fair value of financial assets and financial liabilities Fair Value, by Balance Sheet Grouping [Table Text Block] Non-interest-bearing (includes Card Member credit balances of: 2026, $567; 2025, $556) Noninterest-Bearing Deposit Liabilities, Domestic Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Measurement Basis [Axis] Measurement Basis [Axis] 2026 Time Deposit Maturities, Remainder of Fiscal Year Basic (in dollars per share) Basic EPS (in dollars per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Gains (losses) on net investment hedges, net of taxes Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), before Reclassification and Tax Other assets, reserves for credit losses Other Assets, Allowance for Credit Losses Other Assets, Allowance for Credit Losses Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Preferred stock, dividend per share (in dollars per share) Preferred Stock, Dividends Per Share, Declared Loans and receivables threshold period for write off Financing Receivable, Threshold Period Past Due, Writeoff Operating segment information Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of key variables in macroeconomic scenarios utilized for computation of reserves for credit losses Financing Receivable, Allowance For Credit Loss, Valuation Assumptions [Table Text Block] Financing Receivable, Allowance For Credit Loss, Valuation Assumptions Short-term borrowings Short-Term Debt Cash collateral netting, liabilities Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset Area of real estate property Area of Real Estate Property 30+ Days Past Due as a % of Total Financing Receivable, Credit Quality Indicator, Thirty Plus Days Past Due, Percent Financing Receivable, Credit Quality Indicator, Thirty Plus Days Past Due, Percent Schedule of available for sale securities by type Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] Adjustment to Compensation, Amount Adjustment to Compensation Amount Other assets Increase (Decrease) in Other Operating Assets Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Financing receivables, net Financing receivables, net Financing Receivable, after Allowance for Credit Loss Other Financing Receivable Allowance For Credit Losses Adjustments Other Financing Receivable Allowance For Credit Losses Adjustments Other Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts and Financing Receivables [Table] Securitized Trusts [Table] Securitized Trusts [Table] SecuritizedTrustsTable Antidilutive Securities [Axis] Antidilutive Securities [Axis] Card Member rewards Card Member Rewards Represents the costs of rewards programs (including Membership Rewards). Cash dividends declared common Dividends, Common Stock, Cash Total shareholders’ equity Beginning Balance Ending Balance Equity, Attributable to Parent Other Comprehensive Income (Loss), Net of Tax [Abstract] Other Comprehensive Income (Loss), Net of Tax [Abstract] Measurement Frequency [Axis] Measurement Frequency [Axis] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Debt Securities, Available-for-Sale [Table] Debt Securities, Available-for-Sale [Table] Insider Trading Policies and Procedures [Line Items] Schedule Of Revenue Sources [Table] Schedule Of Revenue Sources [Table] Common shares, authorized (in shares) Common Stock, Shares Authorized Hedging Designation [Domain] Hedging Designation [Domain] Financial Assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Equity securities Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract] Total liabilities and shareholders’ equity Liabilities and Equity Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Fair Value, Recurring Fair Value, Recurring [Member] Net Unrealized Pension and Other Postretirement Benefit Gains (Losses) Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Liabilities and Shareholders’ Equity Liabilities and Shareholders’ Equity Liabilities and Equity [Abstract] Net card fees Credit Card [Member] Cover page. Cover [Abstract] Reclassifications out of AOCI Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Maximum Maximum [Member] Due after 10 years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Headquarters at 200 Greenwich Street Headquarters at 200 Greenwich Street [Member] Headquarters at 200 Greenwich Street Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Financial assets carried at other than fair value Assets Carried At Other Than Fair Value [Abstract] U.S. Government agency obligations US Government Agencies Debt Securities [Member] Net downward adjustments of equity securities without readily determinable fair values Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Annual Amount Foreign currency translation adjustments, net of hedges and tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Other Assets Other Assets [Member] 90+ Days Past Due 90+ Days Past Due Financial Asset, Equal to or Greater than 90 Days Past Due [Member] 2023/2022, gross write-offs Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff Liabilities Liabilities Liabilities [Abstract] Interest Acquired in Swisscard AECS GmbH Interest Acquired in Swisscard AECS GmbH [Member] Interest Acquired in Swisscard AECS GmbH Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Deposits with banks and other Interest Income, Deposits with Financial Institutions Financial liabilities Financial Liabilities Fair Value Disclosure Weighted Average Payment Term Extensions (# of months) Financing Receivable, Modified, Weighted Average Term Increase from Modification Tax credit investments expenses and related income tax credits and other tax benefits Investment Program, Proportional Amortization Method, Elected [Table Text Block] Investment Program, Proportional Amortization Method, Elected Pretax income Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Margin on interest rate swaps Margin On Interest Rate Swap Not Netted Amount posted as initial margin for centrally cleared interest rate swaps which is not netted against the derivative balances. Credit Quality Indicator For Loans And Receivables [Axis] Credit Quality Indicator For Loans And Receivables [Axis] Credit Quality Indicator For Loans And Receivables Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Fixed-rate long-term debt Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge Net increase (decrease) in interest expense on long term debt and other Net Increase (Decrease) To Interest Expense Long Term Debt And Other Related To Net Settlements On Fair Value Hedges Represents the amount of a net increase (decrease) to interest expense on long-term debt and other, primarily related to the net settlements on the Company's fair value hedges. Threshold period past due Financing Receivable, Threshold Period Past Due Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Financing Receivable, Measurement Input, Period [Axis] Financing Receivable, Measurement Input, Period [Axis] Financing Receivable, Measurement Input, Period Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Total interest expense Interest expense Interest Expense, Operating Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Name Measure Name Due in 1 year or less Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One % of Total Class of Financing Receivables Financing Receivable, Modified in Period, to Total Financing Receivables, Percentage Total Gross Unrealized Gains Debt And Equity Securities, Unrealized Gain Debt And Equity Securities, Unrealized Gain Net increase in customer deposits Increase (Decrease) in Deposits Maturities and redemptions of investments Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Document Fiscal Period Focus Document Fiscal Period Focus Kabbage Acquisition Kabbage Acquisition [Member] Kabbage Acquisition Property Under Construction Property Under Construction [Member] Property Under Construction Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Award Timing Method Award Timing Method [Text Block] Litigation Case [Domain] Litigation Case [Domain] Cost Total Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss Modified loans and receivables that subsequently defaulted Financing Receivable, Modified, Subsequent Default [Table Text Block] Award Type Award Type [Axis] Foreign Currency Translation Adjustment Gains (Losses), net of hedges Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Hedging Relationship [Domain] Hedging Relationship [Domain] Contractual maturities of investment securities Available-for-Sale Securities, Debt Maturities [Abstract] Income Tax Contingency [Table] Income Tax Contingency [Table] Components of comprehensive income (loss), net of tax Comprehensive Income (Loss) [Table Text Block] Long-term debt (includes debt issued by consolidated variable interest entities: 2026, $13,278; 2025, $13,022) Long-term debt Long-Term Debt Legal Entity [Axis] Legal Entity [Axis] Total assets Total assets Assets Portion at Other than Fair Value Measurement Portion at Other than Fair Value Measurement [Member] Trading Symbol Trading Symbol Financing receivable, reserves for credit losses, measurement input Financing Receivable, Allowance For Credit Loss, Measurement Input Financing Receivable, Allowance For Credit Loss, Measurement Input Long-term debt and other Interest Expense, Long-Term Debt Financing Receivable, Allowance for Credit Loss [Roll Forward] Financing Receivable, Allowance for Credit Loss [Roll Forward] Entity Address, City or Town Entity Address, City or Town Range of possible loss, in excess of accruals Loss Contingency, Range of Possible Loss, Portion Not Accrued Cash Flows from Operating Activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Acquired finite-lived intangible assets, weighted average useful life Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Effect of foreign currency exchange rates on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Net increase in short-term borrowings Proceeds from (Repayments of) Short-Term Debt Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Certificates of deposit that met or exceeded the insured limit Time Deposits, at or Above FDIC Insurance Limit ICS International Card Services Segment [Member] International Card Services Segment Discount revenue Credit Card, Merchant Discount [Member] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Damages awarded Loss Contingency, Damages Awarded, Value Other Debt Securities, Other [Member] Debt Securities, Other 2028 Time Deposit Maturities, Year Two Entity Emerging Growth Company Entity Emerging Growth Company Marketing Marketing Expense Common stock, dividend per share (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Debt Securities, Available-for-Sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Level 2 Fair Value, Inputs, Level 2 [Member] David Moskowitz, et al. David Moskowitz, et al. [Member] David Moskowitz, et al. Revolving loans Revolving Loans [Member] Revolving Loans Restricted cash Restricted cash and cash equivalents Restricted Cash and Cash Equivalent Business Event [Domain] Business Event [Domain] Business Event [Domain] Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Business Combination [Domain] Business Combination [Domain] Non-interest revenues Total Service fees and other revenue Total non-interest revenues Noninterest Income Common shares, outstanding (in shares) Common Stock, Shares, Outstanding Other financial assets Other Assets, Fair Value Disclosure PEO PEO [Member] Expenses Noninterest Expense [Abstract] Cash and due from banks (includes restricted cash of consolidated variable interest entities: 2026, $6; 2025, nil) Cash and Due from Banks Income tax credits and Other income tax benefits recognized in tax provision Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization Expense Contractual maturities of investment securities Investments Classified by Contractual Maturity Date [Table Text Block] Internal Revenue Service (IRS) Internal Revenue Service (IRS) [Member] Type of Borrower [Axis] Type of Borrower [Axis] Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Changes in operating assets and liabilities, net of effects of acquisitions and dispositions: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] 2026/2025, gross write-offs Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Total Time Deposits Retained Earnings Retained Earnings [Member] Weighted Average Interest Rate Reduction (% points) Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Total cash and cash equivalents (includes restricted cash: 2026, $199; 2025, $169) Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Interest and dividends on investment securities Interest and Dividend Income, Securities, Operating Income Statement [Abstract] Income Statement [Abstract] Total derivatives assets, net Derivative Asset Income tax provision Income Tax Expense (Benefit) 12 months or more Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Direct Interest-Bearing Domestic Deposit, Certificates of Deposits Other assets, less reserves for credit losses: 2026, $121; 2025, $86 Other Assets Fair Value, Nonrecurring Fair Value, Nonrecurring [Member] Time deposits by maturity Time Deposit Maturities [Table Text Block] Direct and Indirect ownership of variable interests Direct And Indirect Ownership Of Variable Interests Direct and Indirect ownership of variable interests with the exception of the debt securities issued to third party investors. Preferred shares, issued (in shares) Preferred Stock, Shares Issued Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Designated as Hedging Instrument Designated as Hedging Instrument [Member] Total Gross Unrealized Losses Debt And Equity Securities, Unrealized Loss Debt And Equity Securities, Unrealized Loss Financing Receivable, Modified [Table] Financing Receivable, Modified [Table] Products Or Services [Domain] Product and Service [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Gains in changes in fair value of derivatives not designated as hedges Gain (Loss) in Changes of Fair Value of Derivatives Not Designated as Hedges Gain (Loss) in Changes of Fair Value of Derivatives Not Designated as Hedges Debt securities Debt Securities, Available-for-Sale [Abstract] Hedging Relationship [Axis] Hedging Relationship [Axis] Financing receivable, revolving, converted to term loan Financing Receivable, Revolving, Converted to Term Loan Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Total Liabilities Liabilities, Fair Value Disclosure Notional amount of derivatives Derivative, Notional Amount Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Goodwill acquired during period Goodwill, Acquired During Period Other Fees and Commissions and Other Expenses [Abstract] Service Fees and Other Revenue and Other Expenses [Abstract] Service Fees and Other Revenue and Other Expenses City Area Code City Area Code Schedule of changes in card member loans, receivables, and other loans Financing Receivable, Allowance for Credit Loss [Table Text Block] Acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Number of states with remaining claims Loss Contingency, Number Of States With Remaining Claims Loss Contingency, Number Of States With Remaining Claims Deposits, by Component, Alternative [Abstract] Deposits, by Component, Alternative [Abstract] Contingencies Commitments and Contingencies, Policy [Policy Text Block] Fourth quarter of 2028 Financing Receivable, Measurement Input, Period Four [Member] Financing Receivable, Measurement Input, Period Four Net Write-Off Rate - Principal Only Net Write-Off Rate Principal [Member] Represents the amount of Card Member loans or Card Member receivables written off consisting of principal (resulting from authorized transactions), less recoveries, as a percentage of the average loan balance or average receivables during the period. AOCI income tax effect Accumulated Other Comprehensive Loss Income Tax Effect Disclosure [Table Text Block] Accumulated Other Comprehensive Loss Income Tax Effect Disclosure [Table Text Block] Add: Weighted-average stock options (in shares) Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Numerator: Net Income Attributable To Common Shareholders [Abstract] Net Income Attributable To Common Shareholders. Business Event [Axis] Business Event [Axis] Business Event Cash Flows from Investing Activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Fair Value Hedges Fair Value Hedging [Member] Estimated Fair Value Total Debt securities Debt Securities, Available-for-Sale, Excluding Accrued Interest Sale of investments Proceeds from Sale of Debt Securities, Available-for-Sale Service fees and other revenue Financial Service, Other [Member] Additional estimated federal income tax payment Income Tax Examination, Estimate of Possible Loss Preferred shares, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Recoveries Financing Receivable, Allowance for Credit Loss, Recovery Other liabilities Other Liabilities Net interest income Interest Income (Expense), Operating Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Derivatives, gross, liabilities Derivative Liability, Subject to Master Netting Arrangement, before Offset Interest expense Interest Expense, Operating [Abstract] Account Balances Financing Receivable, Modified in Period, Amount Equity Components [Axis] Equity Components [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] American Express Charge Trust American Express Charge Trust [Member] This category includes information about the American Express Company Charge Trust, a variable interest entity of the Company. Delinquency fees Late Fee Income Generated by Servicing Financial Assets, Amount CS Commercial Services Segment [Member] Commercial Services Segment Other Performance Measure, Amount Other Performance Measure, Amount Entity Address, State or Province Entity Address, State or Province Total interest income Interest income Interest and Dividend Income, Operating Financing Receivables Period Past Due [Domain] Financial Asset, Period Past Due [Domain] Financial Asset, Aging [Domain] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Card Member and Other loans, less reserves Loans Receivable, Fair Value Disclosure Derivative Instrument [Axis] Derivative Instrument [Axis] Litigation Status [Axis] Litigation Status [Axis] Individual: Individual [Axis] Fair Values Fair Value of Financial Instruments, Policy [Policy Text Block] Earnings per share reconciliation [Abstract] Earnings Per Share Reconciliation [Abstract] Financial Liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Income Tax Estimation, Estimation Expense Type [Axis] Income Tax Estimation, Estimation Expense Type [Axis] Income Tax Estimation, Estimation Expense Type Non Interest Income [Line Items] Non Interest Income [Line Items] Entities [Table] Entities [Table] Investment securities: Investments [Abstract] Cumulative net unrealized losses for equity investments without readily determinable fair values Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Cumulative Amount Entity [Domain] Entity [Domain] Net cash (used in) provided by investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Deposit Liability [Table] Deposit Liability [Table] Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Card Member services Card Member Services Represents protection plans and complimentary services provided to Card Members. Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Contingencies Contingencies Disclosure [Text Block] Payments of long-term debt Repayments of Long-Term Debt Effective tax rates Effective Income Tax Rate Reconciliation, Percent 2023/2022 Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year Entity Interactive Data Current Entity Interactive Data Current 2024/2023, gross write-offs Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff Carrying Value Reported Value Measurement [Member] Financial assets for which carrying values equal or approximate fair value Financial Instruments Assets Which Carrying Values Equal Or Approximate Fair Value [Abstract] Financial assets for which carrying values equal or approximate fair value include cash and cash equivalents, cardmember receivables, accrued interest, and certain other assets. For these assets, the carrying values approximate fair value because they are short-term in duration or variable rate in nature. Financing Receivable, Modifications [Line Items] Financing Receivable, Modified [Line Items] Non-accruals Financing Receivable, Nonaccrual Interest income Interest and Dividend Income, Operating [Abstract] Cumulative net unrealized gains for equity investments without readily determinable fair values Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Cumulative Amount Total expenses Noninterest Expense CECL reasonable and supportable period Financing Receivable, Allowance For Credit Loss, Reasonable And Supportable Period Financing Receivable, Allowance For Credit Loss, Reasonable And Supportable Period 90+ Days Past Billing as a % of total Financing Receivable, Credit Quality Indicator, Ninety Plus Days Past Billing, Percent Financing Receivable, Credit Quality Indicator, Ninety Plus Days Past Billing, Percent Derivatives Derivatives, Policy [Policy Text Block] Reportable Operating Segments Segment Reporting Disclosure [Text Block] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] U.S. Government treasury obligations US Treasury Securities [Member] Asset Securitizations Transfers and Servicing of Financial Assets, Policy [Policy Text Block] Reserves for Credit Losses Allowance for Credit Losses [Text Block] Deposits Interest Expense, Deposits Data processing and equipment Information Technology and Data Processing Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Gross Unrealized Losses Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] 2026/2025 Financing Receivable, Year One, Originated, Current Fiscal Year Non-interest revenues Noninterest Income [Abstract] Revolving Loans Financing Receivable, Revolving Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Changes in Accumulated Other Comprehensive Income (Loss) Comprehensive Income (Loss) Note [Text Block] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Card Balances Card Balances [Member] Card Balances Series D Preferred Stock Series D Preferred Stock [Member] Entity Central Index Key Entity Central Index Key PEO Name PEO Name Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Foreign currency-related revenue Foreign Exchange Conversion Revenue Foreign Exchange Conversion Revenue Credit quality indicators for loans and receivables Financing Receivable Credit Quality Indicators [Table Text Block] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Average common shares outstanding for earnings per common share: Denominator: Weighted Average Number of Shares Outstanding, Basic And Diluted [Abstract] Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Card Member credit balances Noninterest-Bearing Deposit Liabilities Finance lease, liability Finance Lease, Liability Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Assets from Trusts [Line Items] Securitized Trusts [Line Items] Segments [Axis] Segments [Axis] Schedule of derivative instruments in statement of financial position, fair value Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Certificates of deposit: Interest-Bearing Domestic Deposit, Time Deposits [Abstract] Credit Valuation Adjustment Credit Valuation Adjustment [Member] Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Class of Stock [Domain] Class of Stock [Domain] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Class of Financing Receivable, Type of Borrower [Domain] Class of Financing Receivable, Type of Borrower [Domain] Noninterest Income Noninterest Income [Member] Noninterest Income Intangible assets acquired, excluding goodwill Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill Loyalty coalition, merchant and other service fees Loyalty Coalition, Merchant and Other Service Fees Loyalty Coalition, Merchant and Other Service Fees Assets Assets [Abstract] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Balance Sheet Location [Axis] Statement of Financial Position Location, Balance [Axis] Service fees and other revenue Service Fees and Other Revenue [Table Text Block] Service Fees and Other Revenue Depreciation, Depletion, and Amortization Depreciation, Depletion, and Amortization [Policy Text Block] Financing receivables, gross Total Financing Receivable, before Allowance for Credit Loss Interest-bearing Total U.S. interest-bearing deposits Interest-Bearing Deposit Liabilities, Domestic Fair Values Fair Value Disclosures [Text Block] Shareholders’ Equity Equity, Attributable to Parent [Abstract] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Entity Address, Address Line One Entity Address, Address Line One Modifications of loans and receivables Financing Receivable, Modified [Table Text Block] Repurchase of common shares Treasury Stock, Value, Acquired, Cost Method Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] 30 to 59 Days Past Due Financial Asset, 30 to 59 Days Past Due [Member] Non-U.S.: Deposits, Foreign [Abstract] Other Loans Other Loans [Member] Other Loans GMNS Global Merchant and Network Services Segment [Member] Represents Global Merchant and Network Services reportable operating segment. Derivatives and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Asset Securitizations Asset Securitizations [Text Block] This disclosure of financial assets transferred to a trust (for example, cardmember receivables and loans) whereby the trust then issues securities to third-party investors and these securities are collateralized by the transferred assets. The nature of any restrictions on assets reported by an entity in its statement of financial position that relate to a transferred financial asset is also disclosed. The required disclosures may be provided in more than one note to the financial statements, as long as the GAAP disclosure objectives are met. Travel commissions and fees Travel Commissions And Fees Commissions and fees earned by charging clients transaction or management fees for selling and arranging travel and travel management services. Client transaction fee revenue is recognized at the time the client books the travel arrangements. Travel management services revenue is recognized over the contractual term of the agreement. The Company's travel suppliers (for example, airlines, hotels, car rental companies) pay commissions and fees on tickets issued, sales and other services based on contractual agreements. Commissions and fees from travel suppliers are generally recognized at the time a ticket is purchased or over the term of the contract. Commissions and fees that are based on actual usage that is unknown at time of purchase (for example, hotel and car rentals), are recognized when cash is received. Derivative, gross, assets Derivative Asset, Subject to Master Netting Arrangement, before Offset Unused credit available Financing Receivable, Modified, Commitment to Lend Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Other Liabilities Other Liabilities [Member] Name of Property [Domain] Name of Property [Domain] Depreciation and amortization Depreciation, Amortization and Accretion, Net Fair Value as of Grant Date Award Grant Date Fair Value Other deposits Other Interest And Noninterest-Bearing Deposit Liabilities Other Interest And Noninterest-Bearing Deposit Liabilities Cost Equity Securities, FV-NI, Cost Entity Registrant Name Entity Registrant Name Total Cost Debt And Equity Securities, Available-For-Sale, Amortized Cost Debt And Equity Securities, Available-For-Sale, Amortized Cost Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Salaries and employee benefits Labor and Related Expense Purchase of investments Payments to Acquire Investments Document Quarterly Report Document Quarterly Report Less than 12 months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Total Assets Assets, Fair Value Disclosure Customer Deposits Deposit Liabilities Disclosures [Text Block] Long-term debt Long-term debt Long-Term Debt, Fair Value Deposits [Abstract] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] Carrying value of equity securities without readily determinable fair values Equity Securities without Readily Determinable Fair Value, Amount Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Finance lease, right-of-use asset, before accumulated amortization Finance Lease, Right-of-Use Asset, before Accumulated Amortization Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Card Balances and Other Loans Card Balances and Other Loans [Member] Card Balances and Other Loans U.S. Unemployment Rate U.S. Unemployment Rate Input [Member] U.S. Unemployment Rate Input Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Restatement Determination Date: Restatement Determination Date [Axis] Non-PEO NEO Non-PEO NEO [Member] Interest and fees Provisions for financing receivable deductions net write offs interest and fees [Member] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] U.S. interest-bearing deposits: Deposits, by Type [Abstract] Originations of Card balances held for sale Payment for Origination and Purchase, Loan, Held-for-Sale Name Trading Arrangement, Individual Name Allowance for credit losses Financing receivable, reserves for credit losses Beginning reserves Ending reserves Financing Receivable, Allowance for Credit Loss All Award Types Award Type [Domain] Net decrease in Card balances and Other loans, including Card balances held for sale Payments for (Proceeds from) Loans Receivable Total revenues net of interest expense Revenues, Net of Interest Expense Account balance, modified and subsequent default Financing Receivable, Modified, Subsequent Default Prior, gross write-offs Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff Equity Awards Adjustments Equity Awards Adjustments [Member] Card balances HFS Loan, Held-for-Sale, Fair Value Disclosure Other items Other Noncash Income (Expense) Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Corporate Corporate Borrower [Member] Corporate Borrower Compensation Amount Outstanding Recovery Compensation Amount Deposit Liability [Line Items] Deposit Liability [Line Items] Business development Business Development Number of reportable segments not disclosed flag Number Of Reportable Segments Not Disclosed Flag Number Of Reportable Segments Not Disclosed Flag Investment securities Total Estimated Fair Value Debt And Equity Securities, Available-for-sale Debt And Equity Securities, Available-for-sale Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Certificates of Deposit Certificates of Deposit [Member] Foreign Exchange Contract Foreign Exchange Contract [Member] Provisions for credit losses Provision for Loan, Lease, and Other Losses [Abstract] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Corresponding Fair Value Amount Estimate of Fair Value Measurement [Member] Total revenues net of interest expense after provisions for credit losses Total Revenues Net of Interest Expense After Provisions for Losses Revenues from discount revenue, net card fees, service fees and other revenue and processed revenue, net of interest expense after provisions for credit losses Preferred Shares Preferred Stock [Member] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Due after 1 year through 5 years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Name Awards Close in Time to MNPI Disclosures, Individual Name Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Revenues Revenues [Abstract] 2030 Time Deposit Maturities, Year Four Credit Loss [Abstract] Due after 5 years through 10 years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Financing Receivable, Past Due [Line Items] Financing Receivable, Past Due [Line Items] Asset Securitizations [Abstract] Asset Securitizations [Abstract] Asset Securitizations Fourth quarter of 2027 Financing Receivable, Measurement Input, Period Three [Member] Financing Receivable, Measurement Input, Period Three Tax credit investments Investment, Proportional Amortization Method, Elected, Amount Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Financial liabilities for which carrying values equal or approximate fair value Financial Instruments Liabilities Which Carrying Values Equal Or Approximate Fair Value Financial Instruments Liabilities Which Carrying Values Equal Or Approximate Fair Value Financial Instruments [Domain] Financial Instruments [Domain] Litigation Case [Axis] Litigation Case [Axis] Segments [Domain] Segments [Domain] Income Statement Location [Axis] Statement of Income Location, Balance [Axis] Loss contingency, damages sought Loss Contingency, Damages Sought, Value Card Member Loans, Held-for-Sale Card Member Loans, Held-for-Sale [Member] Card Member Loans, Held-for-Sale Investment Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Term loans Term Loans [Member] Term Loans Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Financing Receivable, Input Type [Domain] Financing Receivable, Input Type [Domain] Financing Receivable, Input Type Balance Sheet Location [Domain] Statement of Financial Position Location, Balance [Domain] Thereafter Time Deposit Maturities, After Year Four Time Deposit Maturities, After Year Four Minimum Minimum [Member] Income Tax Authority, Name [Domain] Income Tax Authority, Name [Domain] Net Unrealized Gains (Losses) on Debt Securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Company Selected Measure Name Company Selected Measure Name Fixed-Rate Debt Obligations Fixed-Rate Debt Obligations [Member] Fixed-Rate Debt Obligations Fair Value Measurement [Domain] Fair Value Measurement [Domain] Derivative asset and derivative liability netting, liabilities Derivative Liability, Subject to Master Netting Arrangement, Asset Offset Preferred shares, $1.662/3 par value, authorized 20 million shares; issued and outstanding 1,600 shares as of March 31, 2026 and December 31, 2025 Preferred Stock, Value, Issued Aggregate Available Trading Arrangement, Securities Aggregate Available Amount State and municipal obligations US States and Political Subdivisions Debt Securities [Member] Financing Receivable, Input Type [Axis] Financing Receivable, Input Type [Axis] Financing Receivable, Input Type Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Fourth quarter of 2026 Financing Receivable, Measurement Input, Period Two [Member] Financing Receivable, Measurement Input, Period Two Net income attributable to common shareholders Net Income (Loss) Available to Common Stockholders, Diluted Violation of Federal Antitrust Law and Consumer Laws Class Action Case Violation Of Federal Antitrust Law And Consumer Laws Class Action Case [Member] Violation Of Federal Antitrust Law And Consumer Laws Class Action Case Financing Receivables Period Past Due [Axis] Financial Asset, Period Past Due [Axis] Financial Asset, Aging [Axis] All Executive Categories All Executive Categories [Member] Net Write-Off Rate Financing Receivable, Credit Quality Indicator, Percent Financing Receivable, Credit Quality Indicator, Percent Common shares, $0.20 par value, authorized 3.6 billion shares; issued and outstanding 682 million shares as of March 31, 2026 and 686 million shares as of December 31, 2025 Common Stock, Value, Issued Time Deposits By Maturity Time Deposits, Fiscal Year Maturity [Abstract] Loans over 90 days past due and accruing interest Financing Receivable, 90 Days or More Past Due, Still Accruing Short-term investment securities (includes restricted investments of consolidated variable interest entities: 2026, $85; 2025, $84) Short-Term Investments Interest on Card balances and Other loans Interest and Fee Income, Loans and Leases Derivatives designated as hedging instruments Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments Diluted (in shares) Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Contingencies (Note 7) Commitments and Contingencies Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Business Combination [Axis] Business Combination [Axis] U.S.: Deposits, Domestic [Abstract] Entity Small Business Entity Small Business Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Net Write-Off Rate Principal Interest, and Fees Net Write-Off Rate Principal Interest, and Fees [Member] Represents the amount of Card Member loans or Card Member receivables written off consisting of principal, interest, and fees (resulting from authorized transactions), less recoveries, as a percentage of the average loan balance or average receivables during the period. Preferred shares, outstanding (in shares) Preferred Stock, Shares Outstanding Document Transition Report Document Transition Report Due after 1 year through 5 years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Short-Term Investments Short-Term Investments [Member] Underlying Securities Award Underlying Securities Amount Revolving Loans, gross write-offs Financing Receivable, Revolving, Writeoff Other expenses Other Net Expense [Table Text Block] Other Net Expense [Table Text Block] Equity Component [Domain] Equity Component [Domain] Cumulative amount of fair value hedging adjustment Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease) Document Period End Date Document Period End Date PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Other fees and revenues Other Fees and Revenues Other Fees and Revenues Tax impact for the changes in each component of accumulated other comprehensive (loss) income Accumulated Other Comprehensive Loss Income Tax Impact Change Disclosure [Abstract] Accumulated other comprehensive loss income tax impact change disclosure. Due after 10 years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Carrying values of hedged liabilities Hedged Liability, Fair Value Hedge Income Taxes Income Tax Disclosure [Text Block] Contractual obligation (up to) Contractual Obligation Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] 60 to 89 Days Past Due Financial Asset, 60 to 89 Days Past Due [Member] Hedging Designation [Axis] Hedging Designation [Axis] Maximum payment term extension Financing Receivable, Modified, Maximum Term Increase From Modification, Fixed Payment Plans Financing Receivable, Modified, Maximum Term Increase From Modification For Customers On Fixed Payment Plans Effect of fair value hedges on results of operations Effect Of Fair Value Hedges On Results Of Operations [Table Text Block] Represents table summarizing the impact of fair value hedges on the Consolidated Statements of Income for the period. Document Type Document Type Level 3 Fair Value, Inputs, Level 3 [Member] Estimated Fair Value Debt Securities, Available-for-Sale, Unrealized Loss Position [Abstract] Earnings Per Common Share (EPS) Earnings Per Share [Text Block] Cash and cash equivalents Cash and Cash Equivalent [Abstract] Name Outstanding Recovery, Individual Name Loss Contingencies [Table] Loss Contingencies [Table] Additional paid-in capital Additional Paid in Capital Pay in full loans Pay In Full Loans [Member] Pay In Full Loans Product Or Services [Axis] Product and Service [Axis] Net Investment Hedges Net Investment Hedging [Member] Derivative Contract [Domain] Derivative Contract [Domain] Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable, Allowance for Credit Loss [Table] Issuance of American Express common shares Proceeds from Issuance of Common Stock Revenue from contracts with customers Revenue from Contract with Customer, Excluding Assessed Tax Litigation Status [Domain] Litigation Status [Domain] Derivative, amount of hedged item Derivative, Amount of Hedged Item All Individuals All Individuals [Member] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Purchase of premises and equipment, net of sales Payments to Acquire Property, Plant, and Equipment Name Forgone Recovery, Individual Name Statistical Measurement [Axis] Statistical Measurement [Axis] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Salaries and employee benefits and other operating expenses Labor And Related Expense, Including Other Noninterest Expense Labor And Related Expense, Including Other Noninterest Expense Non-U.S. direct certificates of deposit Interest-Bearing Foreign Deposit, Certificates of Deposits Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Card Member Credit Balances Card Member Credit Balances [Member] Cardmember credit balances Fair Values (Textuals) Fair Values (Textuals) [Abstract] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Net income available to common shareholders Net Income (Loss) Available to Common Stockholders, Basic Prior Financing Receivable, Originated, More than Five Years before Current Fiscal Year Entity Information [Line Items] Entity Information [Line Items] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Other comprehensive income (loss) Other comprehensive income (loss) Net Change Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Other Other Net Expenses Represents other, net expenses from miscellaneous items within other revenues not previously classified. Interest Rate Reduction and Term Extension Extended Maturity and Interest Rate Reduction [Member] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Net unrealized pension and other postretirement benefits, net of tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent Level 1 Fair Value, Inputs, Level 1 [Member] Non-interest-bearing (includes Card Member credit balances of: 2026, $591; 2025, $436) Noninterest-Bearing Deposit Liabilities, Foreign Diluted (in dollars per share) Diluted EPS (in dollars per share) Earnings Per Share, Diluted Earnings allocated to participating share awards Earnings allocated to participating share awards Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Title of 12(b) Security Title of 12(b) Security Due after 5 years through 10 years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Financial liabilities carried at other than fair value Liabilities Carried At Other Than Fair Value [Abstract] Other Expense Other Expense [Member] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Accounts payable Accounts Payable Cash dividends declared preferred Dividends, Preferred Stock, Cash Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Financing receivables held for sale Financing Receivable, Held-for-Sale Earnings per Common Share Earnings Per Share [Abstract] Consolidation Items [Domain] Consolidation Items [Domain] Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Gross Unrealized Gains Debt Securities, Available-for-Sale, Unrealized Gain Gross Unrealized Losses Equity Securities, FV-NI, Unrealized Loss Term Extension Extended Maturity [Member] Total Gain (Loss) on Fair Value Hedges Recognized in Earnings Embedded Derivative Embedded Derivative Financial Instruments [Member] Other changes Stockholders' Equity, Other Penalties Penalties [Member] Penalties 2027 Time Deposit Maturities, Year One Financing Receivable, Allowance for Credit Loss [Line Items] Changes in the Card Member loans reserve for losses [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] U.S. GDP Growth (Contraction) U.S. GDP Growth (Contraction) Rate Input [Member] U.S. GDP Growth (Contraction) Rate Input Restricted Cash and Cash Equivalents [Axis] Restricted Cash and Cash Equivalents [Axis] Credit Quality Indicator for Loans and Receivables Credit Quality Indicator for Loans and Receivables [Abstract] Award Timing Disclosures [Line Items] Corporate and Other Corporate And Eliminations [Member] Corporate And Eliminations Income Tax Estimation, Estimation Expense Type [Domain] Income Tax Estimation, Estimation Expense Type [Domain] Income Tax Estimation, Estimation Expense Type [Domain] Measurement Frequency [Domain] Measurement Frequency [Domain] Sweep accounts – Third-party (brokered) Third Party Sweep Accounts Represents third party sweep accounts offered by the Company's Banks. 2022/2021, gross write-offs Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] 2024/2023 Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year Net income Net income Net Income (Loss) Attributable to Parent Available-for-sale securities, continuous unrealized loss position, fair value Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Expiration Date Trading Arrangement Expiration Date 2025/2024, gross write-offs Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff 3.433% Fixed-to-Floating Rate Notes due May 20, 2032 Fixed-To-Floating Rate Note [Member] Fixed-To-Floating Rate Note USCS U.S. Consumer Services Segment [Member] U.S. Consumer Services Segment Foreign government bonds and obligations Debt Security, Government, Non-US [Member] Premises and equipment, less accumulated depreciation and amortization: 2026, $12,441; 2025, $12,039 Property, Plant and Equipment, Net Net unrealized debt securities gains (losses), net of tax Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Preferred shares authorized (in shares) Preferred Stock, Shares Authorized Basic and diluted: Net Income (Loss) Attributable to Parent [Abstract] Repurchase of American Express common shares and other Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Financing Receivable, Past Due [Table] Financing Receivable, Past Due [Table] Entity Current Reporting Status Entity Current Reporting Status Receivables [Abstract] Receivables [Abstract] Interest-Bearing Deposits Interest-Bearing Deposits [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Consolidated Entities [Domain] Consolidated Entities [Domain] Due in 1 year or less Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Retained earnings Retained Earnings (Accumulated Deficit) Name of Property [Axis] Name of Property [Axis] Losses on embedded derivatives Embedded Derivative, Gain (Loss) on Embedded Derivative, Net Financial Instrument [Axis] Financial Instrument [Axis] Network partnership revenue Network Partnership Revenue Network Partnership Revenue Reclassifications out of AOCI Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), Reclassification, before Tax Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Executive Category: Executive Category [Axis] Accounts payable & other liabilities Increase (Decrease) in Accounts Payable and Other Operating Liabilities 12 months or more Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Reserves for Credit Losses Financing Receivable [Policy Text Block] American Express Lending Trust American Express Lending Trust [Member] This category includes information about the American Express Company Lending Trust, a variable interest entity of the Company. Proceeds from long-term debt Proceeds from Issuance of Long-Term Debt Current Fiscal Year End Date Current Fiscal Year End Date Class of Stock [Axis] Class of Stock [Axis] Less than 12 months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Customer deposits Total customer deposits Deposits Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Interest-bearing Interest-Bearing Deposit Liabilities, Foreign Card member and other loan detail Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Professional services Professional Fees Statement [Table] Statement [Table] Total derivatives liabilities, net Derivative Liability Deferred taxes Deferred Income Tax Expense (Benefit) Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] 2022/2021 Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year Cash Flows from Financing Activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Other, net Total Other expenses Other Noninterest Expense Cash Cash [Member] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Loan Restructuring Modification [Axis] Loan Restructuring Modification [Axis] Interest Rate Contract Interest Rate Contract [Member] Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract] Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract] Fair value assets and liabilities measured on recurring basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Estimated Fair Value Equity securities Equity Securities, FV-NI, Current Account balances Financing Receivable, Modified, after 12 Months Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] The dilutive effect of securities excluded from the calculation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount All Adjustments to Compensation All Adjustments to Compensation [Member] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Interest Rate Reduction Contractual Interest Rate Reduction [Member] Amendment Flag Amendment Flag Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract] Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract] Accrued interest available-for-sale debt securities Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss Aging of receivables Financing Receivable, Past Due [Table Text Block] Net Write Offs [Domain] Net Write Offs [Domain] Net Write Offs [Domain] Termination Date Trading Arrangement Termination Date Net cash provided by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Interest-bearing deposits in other banks (includes restricted interest-bearing deposits of consolidated variable interest entities: 2026, $19; 2025, nil) Interest-Bearing Deposits in Banks and Other Financial Institutions Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] 2029 Time Deposit Maturities, Year Three Measure: Measure [Axis] Total provisions for credit losses Provisions for credit losses Provisions Financing Receivable, Credit Loss, Expense (Reversal) Basic (in shares) Basic: Weighted-average common stock (in shares) Weighted Average Number of Shares Outstanding, Basic Computation of basic and diluted EPS Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Card Member rewards, business development and Card Member services Card Member Rewards, Business Development And Card Member Services Card Member Rewards, Business Development And Card Member Services Customer deposits by component and type Deposit Liabilities, Type [Table Text Block] Segment Reporting [Abstract] Segment Reporting [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Checking accounts Demand Deposit Accounts Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Entity Tax Identification Number Entity Tax Identification Number Credit Balances [Domain] Credit Balances [Domain] Credit Balances [Domain] Gross Unrealized Gains Equity Securities, FV-NI, Unrealized Gain Income Tax Authority, Name [Axis] Income Tax Authority, Name [Axis] Gross Unrealized Losses Debt Securities, Available-for-Sale, Unrealized Loss Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Common shares, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Consolidated Entities [Axis] Consolidated Entities [Axis] Common shares, issued (in shares) Common Stock, Shares, Issued Net Write Offs [Axis] Net Write Offs [Axis] Credit Balances [Axis] Credit Balances [Axis] Cardmember credit balances Mortgage-backed securities Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] Dividends paid Payments of Dividends Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount KServicing Wind Down Corp. KServicing Wind Down Corp. [Member] KServicing Wind Down Corp. Net upward adjustments of equity securities without readily determinable fair values Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount Loss Contingencies [Line Items] Loss Contingencies [Line Items] Derivative asset and derivative liability netting, assets Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Insider Trading Arrangements [Line Items] Security Exchange Name Security Exchange Name First quarter of 2026 Financing Receivable, Measurement Input, Period One [Member] Financing Receivable, Measurement Input, Period One Current Financial Asset, Not Past Due [Member] Financing Receivable, Measurement Input, Period [Domain] Financing Receivable, Measurement Input, Period [Domain] Financing Receivable, Measurement Input, Period [Domain] Total liabilities Liabilities Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Card Balances and Other Loans Financing Receivables [Text Block] Contribution of property Contribution of Property Dividends on preferred shares Preferred dividends Dividends, Preferred Stock Third-party (brokered) Third Party Certificates Of Deposit Represents third party certificate of deposit accounts offered by the Company's Banks. Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Other Other Loans and Other Receivables [Member] Other Loans and Other Receivables Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Savings accounts Deposits, Savings Deposits Small Business Small Business Borrower [Member] Small Business Borrower Statement [Line Items] Statement [Line Items] Consolidation Items [Axis] Consolidation Items [Axis] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] 30-89 Days Past Due Financial Asset, 30-to 89 Days Past Due [Member] Financial Asset, 30-to 89 Days Past Due Counterparty Name [Axis] Counterparty Name [Axis] Common shares (par value $0.20 per share) Common Shares Common Stock [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Net increase in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation