Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Proceeds from sales and calls of available-for-sale securities Proceeds from Sale of Debt Securities, Available-for-Sale Allowance for Loan Losses [Roll Forward] Financing Receivable, Allowance for Credit Loss [Roll Forward] Internal-use software costs Deferred Tax Liabilities, Deferred Expense, Capitalized Software Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Contingent Consideration Contingent Consideration [Member] Contingent Consideration [Member] Award expiration period Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Award Type [Domain] Award Type [Domain] Non-interest bearing deposit accounts Noninterest-Bearing Deposit Liabilities Fair Value as of Grant Date Award Grant Date Fair Value Investment, Name [Domain] Investment, Name [Domain] Impairment of intangible assets Impairment of Intangible Assets (Excluding Goodwill) Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Stock-based compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Percent Insider Trading Policies and Procedures [Line Items] Options, exercisable (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] 2028 Lessee, Operating Lease, Liability, to be Paid, Year Five Votes per share (in votes) Common Stock, Voting Rights, Vote Each Share Common Stock, Voting Rights, Vote Each Share Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Stockholders' Equity Equity [Text Block] Re-allocated earnings Dilutive Securities, Effect on Basic Earnings Per Share Total Current or Less Than 30 Days Past Due Financial Asset, Not Past Due [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Reconciliation to income before income taxes Segment, Reconciliation of Other Items from Segments to Consolidated [Abstract] Customer [Axis] Customer [Axis] Schedule of Deposits Summary Of Deposits [Table Text Block] Summary of non-interest bearing and interest-bearing deposit accounts. Current liabilities: Liabilities, Current [Abstract] Federal Deferred Federal Income Tax Expense (Benefit) Subsequent Event Type [Domain] Subsequent Event Type [Domain] Secured credit card Secured credit card Credit Card Receivable [Member] Impairment of long-lived assets Impairment, Long-Lived Asset, Held-for-Use Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Receivable Type [Domain] Receivable [Domain] Line of Credit Line of Credit [Member] Processing expenses Communications and Information Technology Trading Symbol Trading Symbol Agency mortgage-backed securities US Government Agencies Debt Securities [Member] Investment in TailFin Labs, LLC Payments to Acquire Equity Method Investments Tax impact on unrealized losses and gains on investment securities available-for-sale OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, Tax Thereafter Finite-Lived Intangible Asset, Expected Amortization, after Year Five Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Checking accounts Deposits, Negotiable Order of Withdrawal (NOW) Computer equipment, furniture and office equipment Computer equipment, furniture, and office equipment Machinery and Equipment [Member] Amortization of (discount) premium on available-for-sale investment securities Amortization of Debt Discount (Premium) Employee stock purchase plan Employee Stock [Member] Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Investment Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Stockholders’ equity: Equity, Attributable to Parent [Abstract] Other Other Intangible Assets [Member] Schedule of Earnings Per Common Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Executive Category: Executive Category [Axis] Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Options, exercises in period, weighted average exercise price (in USD per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Level 1 Fair Value, Inputs, Level 1 [Member] Carrying Value Reported Value Measurement [Member] Schedule of Property and Equipment Property, Plant and Equipment [Table Text Block] Equity Components [Axis] Equity Components [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Number of shares available for grant Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Allowance for loan losses Allowance for loan losses, beginning of period Allowance for loan losses, end of period Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest Entity Small Business Entity Small Business 2027 Finite-Lived Intangible Asset, Expected Amortization, Year Four Local Phone Number Local Phone Number Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Schedule of Compliance with Regulatory Capital Requirements Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Measurement Frequency [Axis] Measurement Frequency [Axis] Amounts due to card issuing banks for overdrawn accounts Amounts Due To Card Issuing Banks For Overdrawn Accounts Amounts due to card issuing banks that fund overdrawn cardholder account balances. Amounts funded are due to the card issuing banks on terms specified in the agreements with the card issuing banks. Generally, these obligations are settled within one year. Tier one common equity to average assets Tier One Common Equity To Average Assets Tier One Common Equity To Average Assets Restricted cash Restricted cash Restricted Cash and Cash Equivalents, Current Restricted Stock Units (RSUs) Service based restricted stock units Restricted Stock Units (RSUs) [Member] Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Allowance for doubtful accounts receivable, write-offs, average recovery period Allowance For Doubtful Accounts Receivable, Write-offs, Average Recovery, Period Allowance For Doubtful Accounts Receivable, Write-offs, Average Recovery, Period Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Line of Credit Facility [Table] Line of Credit Facility [Table] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Goodwill and intangible assets Goodwill and intangible assets Intangible Assets, Net (Including Goodwill) Number of former officers name as defendants Loss Contingency, Number Of Former Officers Name As Defendants Loss Contingency, Number Of Former Officers Name As Defendants Due after ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Total operating revenues Revenues Revenues Income tax payable Accrued Income Taxes, Current Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Schedule of Antidilutive Shares Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Interest expense Interest Expense, Debt Cardholder fees Cardholder Fee [Member] Cardholder Fee Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Antidilutive shares (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Award Type [Axis] Award Type [Axis] Stock units granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Property and equipment Property, Plant and Equipment, Gross Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Property and Equipment [Abstract] Property and Equipment [Abstract] Property and Equipment [Abstract] Cash processing revenues Processing And Settlement Service [Member] Processing And Settlement Service [Member] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Schedule of Components of Income Tax Expense Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Operating lease liabilities Operating Lease, Liability, Current 2026 Lessee, Operating Lease, Liability, to be Paid, Year Three Intangible assets, net Net Book Value Finite-Lived Intangible Assets, Net Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Recently Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Average repurchase price per share (in USD per share) Shares Acquired, Average Cost Per Share Counterparty Name [Domain] Counterparty Name [Domain] Credit Quality Indicator [Axis] Internal Credit Assessment [Axis] Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization 2025 Lessee, Operating Lease, Liability, to be Paid, Year Two Accounts receivable, gross Accounts Receivable, before Allowance for Credit Loss Private Placement Private Placement [Member] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Commitment fee (as a percent) Line of Credit Facility, Commitment Fee Percentage Deferred revenue Contract with Customer, Liability, Current Security Exchange Name Security Exchange Name Stock-Based Compensation Share-Based Payment Arrangement [Policy Text Block] Lease liabilities Deferred Tax Assets, Lease Liabilities Deferred Tax Assets, Lease Liabilities Classified Nonperforming Financial Instruments [Member] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Green Dot Corporation Green Dot Corporation [Member] Green Dot Corporation [Member] Stock options Options to purchase Class A common stock Employee Stock Option [Member] Investment Securities Investment, Policy [Policy Text Block] Capital required to be well capitalized to risk weighted assets Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum Maximum Maximum [Member] Document Type Document Type Regulatory Agency [Axis] Regulatory Agency [Axis] Tabular List, Table Tabular List [Table Text Block] Tax Year 2021-2039 Tax Year 2021-2039 [Member] Tax Year 2021-2039 [Member] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Walmart Program Agreement Walmart Program Agreement [Member] Walmart Program Agreement [Member] Shipping and handling costs Selling Expense Stock-Based Compensation Share-Based Payment Arrangement [Text Block] Federal Current Federal Tax Expense (Benefit) Principles of Consolidation and Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Other Other Noncash Income (Expense) Purchases of available-for-sale investment securities Payments to Acquire Debt Securities, Available-for-Sale Customer Concentration Risk Customer Concentration Risk [Member] State Deferred State and Local Income Tax Expense (Benefit) Variable Rate [Axis] Variable Rate [Axis] Accounts payable and other accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Options, canceled in period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Title of 12(b) Security Title of 12(b) Security Amortized cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss Due in 2025 Time Deposit Maturities, Year Two Tier one risk based capital required to be well capitalized to risk weighted assets Banking Regulation, Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum Commercial Commercial Commercial Portfolio Segment [Member] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Operating Segments Operating Segments [Member] Outstanding, beginning balance (in USD per share) Outstanding, ending balance (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] LIBOR Rate LIBOR Rate [Member] LIBOR Rate Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Schedule of Accounts Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Entity Tax Identification Number Entity Tax Identification Number Statistical Measurement [Axis] Statistical Measurement [Axis] Entity Interactive Data Current Entity Interactive Data Current Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Residential Residential Residential Portfolio Segment [Member] Schedule of Available-for-sale Securities [Table] Debt Securities, Available-for-Sale [Table] Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Measure: Measure [Axis] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Name Outstanding Recovery, Individual Name Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Schedule of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Counterparty Name [Axis] Counterparty Name [Axis] Antidilutive Shares [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] 2024 Finite-Lived Intangible Asset, Expected Amortization, Year One Cash paid for operating lease liabilities (in thousands) Operating Lease, Payments Schedule of Stock-based Compensation Expense Share-Based Payment Arrangement, Cost by Plan [Table Text Block] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding PEO PEO [Member] Estimate of the aggregate range of reasonably possible losses Loss Contingency, Estimate of Possible Loss Auditor Location Auditor Location Other expense Other Cost and Expense, Operating Defined Contribution Plan Retirement Benefits [Text Block] Indefinitely Indefinitely [Member] Indefinitely [Member] Balance at the beginning of the period (in shares) Balance at the end of the period (in shares) Shares, Outstanding Common stock, par value (in USD per share) Common Stock, Par or Stated Value Per Share Sale of Stock [Axis] Sale of Stock [Axis] Actual adjustment for certified performance periods (in shares) Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Adjustment For Certified Performance Periods Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Adjustment For Certified Performance Periods Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Interest-bearing deposit accounts Interest-Bearing Deposit Liabilities, by Component [Abstract] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Tier one leverage capital required to be well capitalized to average assets Banking Regulation, Tier 1 Leverage Capital Ratio, Well Capitalized, Minimum Deferred tax liabilities: Deferred Tax Liabilities, Gross [Abstract] Credit Facility [Axis] Credit Facility [Axis] Total liabilities Liabilities Current income tax expense Current Income Tax Expense (Benefit) Net changes in settlement assets and obligations to customers Net Changes In Settlement Assets And Obligation To Customers, Financing Activities Net Changes In Settlement Assets And Obligation To Customers, Financing Activities Total fair value Debt Securities, Available-for-Sale, Unrealized Loss Position Green Dot Bank Green Dot Bank [Member] Green Dot Bank [Member] Measurement Frequency [Domain] Measurement Frequency [Domain] Property and Equipment Property, Plant and Equipment Disclosure [Text Block] Consumer Services Consumer Services Segment [Member] Consumer Services Segment [Member] Repayments on revolving line of credit Repayments of Long-Term Lines of Credit Provision for loan losses Provision for Other Credit Losses Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Subsequent Event [Line Items] Subsequent Event [Line Items] Sales and marketing expenses Selling and Marketing Expense Target share percentage Share-based Compensation Arrangement, Shares Issued, Target Share Percentage Share-based Compensation Arrangement, Shares Issued, Target Share Percentage Less than 12 months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Secured card deposits Deposits, Secured Card Deposits Deposits, Secured Card Deposits Audit Information [Abstract] Audit Information Consumer Consumer Consumer Portfolio Segment [Member] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] State Current State and Local Tax Expense (Benefit) Total current assets Assets, Current Recoveries of loans previously charged off Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery Savings Deposits, Savings Deposits Impairment charges Asset Impairment Charges Schedule of Customer Concentrations Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Lease right-of-use assets Deferred Tax Liabilities, Lease Right Of Use Assets Deferred Tax Liabilities, Lease Right Of Use Assets Schedule of Financing Receivable Credit Quality Indicators Financing Receivable Credit Quality Indicators [Table Text Block] Loans charged off Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Earnings Per Common Share Earnings Per Share, Policy [Policy Text Block] Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Repurchases of class A common stock (in shares) Stock Repurchased During Period, Shares Collateral deposits applied threshold Collateral Deposits Applied Threshold Collateral Deposits Applied Threshold Concentration risk Concentration Risk, Percentage Fair value measurement, beginning of period Fair value measurement, end of period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Current: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] State income taxes, net of federal tax benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Weighted-average grant-date fair value (in USD per share) Granted (in USD 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 2028 Finite-Lived Intangible Asset, Expected Amortization, Year Five Accounts Receivable, net Accounts Receivable [Policy Text Block] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Options, exercisable, intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Schedule of Finite-Lived Intangible Assets, Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Class of Stock [Axis] Class of Stock [Axis] Partner Concentration Risk Partner Concentration Risk [Member] Partner Concentration Risk Equity Method Investments Equity Method Investments and Joint Ventures Disclosure [Text Block] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Accounts Receivable Loans, Notes, Trade and Other Receivables, Excluding Allowance for Credit Losses [Text Block] Line of credit Line of Credit, Current Tail Fin Labs Tail Fin Labs [Member] Tail Fin Labs Depreciation and amortization of property, equipment and internal-use software Depreciation and amortization expense Depreciation, Depletion and Amortization Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Deferred tax assets: Deferred Tax Assets, Gross [Abstract] Other expense, net Other Operating Income (Expense), Net Tier one common equity capital required to be well capitalized to average assets Tier One Common Equity Capital Required To Be Well Capitalized To Average Assets Tier One Common Equity Capital Required To Be Well Capitalized To Average Assets Other Share Repurchase Program Other Share Repurchase Program [Member] Other Share Repurchase Program Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Transferred over time Transferred over Time [Member] Total loans Financing Receivable, after Allowance for Credit Loss Consolidation Items [Axis] Consolidation Items [Axis] Impairment of goodwill Goodwill, Impairment Loss Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Contract liabilities, revenue recognized during the period Contract with Customer, Liability, Revenue Recognized Advertising and marketing expenses Marketing and Advertising Expense Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Entity Emerging Growth Company Entity Emerging Growth Company Fair value Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract] Total deferred tax assets Deferred Tax Assets, Gross Other receivables Other Receivables [Member] Balance represents other receivables. Regulatory Matters and Capital Adequacy Regulatory Matters And Capital Adequacy, Policy [Policy Text Block] Regulatory Matters and Capital Adequacy, Policy [Policy Text Block] Investment securities available-for-sale, at fair value Debt Securities, Available-for-Sale, Excluding Accrued Interest, Current Loans held for sale Loan, Held-for-Sale, Fair Value Disclosure Deposits Deposit Liabilities Disclosures [Text Block] 2024 Lessee, Operating Lease, Liability, to be Paid, Year One Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Antidilutive Securities Excluded from Computation of Earnings Per Share, by Antidilutive Securities [Axis] Antidilutive Securities [Axis] Title Trading Arrangement, Individual Title Class A Common Stock Common Stock [Member] Individual: Individual [Axis] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Decreases due to a lapse of applicable statute of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Schedule of Changes in Contingent Consideration Payable Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Cash settlement Accelerated Share Repurchases, Settlement (Payment) or Receipt Minimum Minimum [Member] Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Property, equipment, and internal-use software, net Property and equipment, net Property, Plant and Equipment, Net Other comprehensive loss Other Comprehensive Income (Loss), Net of Tax Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Assets Assets [Abstract] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Due after ten years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Taxes paid related to net share settlement of equity awards Payment, Tax Withholding, Share-Based Payment Arrangement Other Deferred Tax Assets, Other Agency bond securities US Treasury Securities [Member] Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Net deferred tax assets Deferred Income Tax Assets, Net Unvested Walmart restricted shares Unvested Restricted Shares Of Common Stock [Member] Unvested Restricted Shares Of Common Stock Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Other investing activities Payments for (Proceeds from) Other Investing Activities Retained Earnings Retained Earnings [Member] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Accounting Policies [Abstract] Accounting Policies [Abstract] Settlement assets Settlement Assets, Current Sale of Stock [Domain] Sale of Stock [Domain] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Net deferred tax assets Deferred Tax Assets, Net Exercises in period, total intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Schedule of Available-for-sale Securities, Unrealized Loss Position Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Monthly share repurchases, value Share Repurchase Program, Value, Monthly Share Repurchases Share Repurchase Program, Value, Monthly Share Repurchases Capital to risk weighted assets Banking Regulation, Total Risk-Based Capital Ratio, Actual Document Transition Report Document Transition Report Award Timing Predetermined Award Timing Predetermined [Flag] Reduced voting power (more than) Reduced Voting Power The percentage voting power resulting if a single holder, or group of affiliated holders, exceed the voting threshold. Obligations to customers Client Funds Held The balance at the reporting period in the carrying amount of client funds held and maintained in custodial and separate accounts, and which are owned by clients or contract holders. Schedule of Income Tax Contingencies Summary of Income Tax Contingencies [Table Text Block] Entity Public Float Entity Public Float 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] Minimum age (in years) Minimum Age The minimum age to participate in the 401(k) Plan. Nonaccrual status threshold Nonaccrual Status Threshold The number of days a loan must be past due to be considered a nonperforming loan. Liability Class [Axis] Liability Class [Axis] All Trading Arrangements All Trading Arrangements [Member] Due in one year or less Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One All Adjustments to Compensation All Adjustments to Compensation [Member] Timing of Transfer of Good or Service [Domain] Timing of Transfer of Good or Service [Domain] Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] General business credits Effective Income Tax Rate Reconciliation, Tax Credit, Other, Percent Compensation Amount Outstanding Recovery Compensation Amount Money Movement Services Money Movement Services [Member] Money Movement Services [Member] Provision for uncollectible overdrawn accounts from purchase transactions Accounts Receivable, Credit Loss Expense (Reversal) Other comprehensive income and loss Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Canceled (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Deferred income tax (benefit) expense Deferred income tax (benefit) expense Deferred Income Tax Expense (Benefit) Subsequent Event Type [Axis] Subsequent Event Type [Axis] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Card revenues and other fees Card Revenues And Other Fees [Member] Card Revenues And Other Fees [Member] Options, canceled in period, weighted average canceled price (in USD per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Document Financial Statement Error Correction Document Financial Statement Error Correction [Flag] GPR, average useful life GPR, Average Useful Life GPR, Average Useful Life Deposits [Abstract] Deposits [Abstract] Reserve for uncollectible overdrawn accounts Balance, beginning of period Balance, end of period Accounts Receivable, Allowance for Credit Loss Schedule of Goodwill and Intangible Assets Schedule of Intangible Assets and Goodwill [Table Text Block] Reserve for overdrawn accounts Deferred Tax Assets, Reserve For Overdrawn Accounts The tax effect as of the balance sheet date of the amount of the estimated future tax deductions attributable to the reserve for overdrawn accounts. Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Dilutive potential common shares (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Document Period End Date Document Period End Date Schedule of Nonperforming Loans Financing Receivable, Nonaccrual [Table Text Block] Adoption Date Trading Arrangement Adoption Date Total outstanding (as a percent) Financing Receivable, Recorded Investment, Percent Financing Receivable, Recorded Investment, Percent Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Loss contingency accrual Loss Contingency Accrual Concentrations of Credit Risk Significant Retailer and Partner Concentration Concentration Risk Disclosure [Text Block] Purchases of other investments Payment to Acquire Life Insurance Policy, Investing Activities Numerator: Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Income tax expense Income tax expense Income Tax Expense (Benefit) Charge-offs Accounts Receivable, Allowance for Credit Loss, Writeoff Fair Value Measurements Fair Value Disclosures [Text Block] 12 months or more Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Weighted average remaining lease term (years) Operating Lease, Weighted Average Remaining Lease Term 60-89 Days Past Due Financial Asset, 60 to 89 Days Past Due [Member] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Diluted earnings per common share (in USD per share) Diluted earnings per Class A common share (in USD per share) Earnings Per Share, Diluted, Undistributed Tax credit carryforward Tax Credit Carryforward, Amount Less than 12 months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Unrestricted cash and cash equivalents Unrestricted cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, Credit Quality Indicator [Table] Schedule Past Due Financing Receivables Financing Receivable, Past Due [Table Text Block] Nondeductible penalties Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent Credit Facility [Domain] Credit Facility [Domain] Treasury stock acquired (in shares) Treasury Stock, Shares, Acquired Basis spread on variable base rate (as a percent) Debt Instrument, Basis Spread on Variable Rate Property, plant and equipment, estimated useful lives Property, Plant and Equipment, Useful Life Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Bank owned life insurance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Deposits Deposits, Fair Value Disclosure Capitalized internal-use software Capitalized internal-use software Software Development [Member] Total current or less than 30 days past due (as a percent) Financing Receivable, Recorded Investment, Percent Current Financing Receivable, Recorded Investment, Percent Current Trade receivables Trade Accounts Receivable [Member] Revenues Revenue from Contract with Customer [Text Block] Decreases related to positions settled with tax authorities Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Loans and Leases Receivable Disclosure [Abstract] Loans and Leases Receivable Disclosure [Abstract] Additional Paid-in Capital Additional Paid-in Capital [Member] Document Annual Report Document Annual Report 30-59 Days Past Due Financial Asset, 30 to 59 Days Past Due [Member] Losses (earnings) in equity method investments Income (loss) in equity method investments Income (Loss) from Equity Method Investments Loss Contingencies [Line Items] Loss Contingencies [Line Items] Cover page. Cover [Abstract] Subsequent Event Subsequent Events [Text Block] Tax Period [Axis] Tax Period [Axis] Recurring Fair Value, Recurring [Member] Other accrued liabilities Other Liabilities, Noncurrent Payments due Lessee, Operating Lease, Liability, to be Paid Deferred expenses Deferred Tax Liabilities, Deferred Expense Total operating expenses Operating Expenses Aggregate amount of net assets of subsidiaries Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries Segment Information Segment Reporting Disclosure [Text Block] Net decrease in unrestricted cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Income Tax Authority, Name [Domain] Income Tax Authority, Name [Domain] Equity Component [Domain] Equity Component [Domain] State and Local Jurisdiction State and Local Jurisdiction [Member] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Entity Current Reporting Status Entity Current Reporting Status Concentration Risk Type [Domain] Concentration Risk Type [Domain] B2B Services B2B Services Segment [Member] B2B Services Segment [Member] Operating income Operating income Operating Income (Loss) Number of shares repurchased (in shares) Accelerated Share Repurchases, Number Of Shares Repurchased Accelerated Share Repurchases, Number Of Shares Repurchased Receivables due from card issuing banks Receivables Due From Card Issuing Banks [Member] Receivables from card issuing banks primarily represent revenue-related funds collected by the card issuing banks from our retail distributors, merchant banks and cardholders that have yet to be remitted to us. These receivables are generally collected within a short period of time based on remittance terms in our agreements with the card issuing banks. Base Rate, Condition One Base Rate, Condition One [Member] Base Rate, Condition One [Member] Contingent consideration payments Payments of contingent consideration Payments of Merger Related Costs, Financing Activities Total deferred tax liabilities Deferred Tax Liabilities, Gross Provision for loans Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) Investment Held By Bank Investment Held By Bank [Member] Investment Held By Bank Due in 2028 Time Deposit Maturities, Year Five Segments [Axis] Segments [Axis] Fair Value Estimate of Fair Value Measurement [Member] Property and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Scenario [Domain] Scenario [Domain] Tax Year 2023-2027 Tax Year 2023-2027 [Member] Tax Year 2023-2027 [Member] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Customer relationships Customer Relationships [Member] Line of credit Long-Term Line of Credit Tier one common equity required for capital adequacy to average assets Tier One Common Equity Required For Capital Adequacy To Average Assets Tier One Common Equity Required For Capital Adequacy To Average Assets Capitalized computer software, net Capitalized Computer Software, Net Variable Rate [Domain] Variable Rate [Domain] Pay vs Performance Disclosure [Line Items] Entity Voluntary Filers Entity Voluntary Filers Statistical Measurement [Domain] Statistical Measurement [Domain] Margin included in variable base rate (as a percent) Debt Instrument, Stated Interest Spread Debt Instrument, Stated Interest Spread Underlying Security Market Price Change Underlying Security Market Price Change, Percent Debt Debt Disclosure [Text Block] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Investment securities: Investments, Debt and Equity Securities [Abstract] Revolving Credit Facility Revolving Credit Facility [Member] impairment of intangible assets Impairment of Intangible Assets, Finite-Lived Equity Method Investments and Joint Ventures [Abstract] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Performance-based restricted stock units Performance-based restricted stock units Performance Shares [Member] March And April 2022 March And April 2022 [Member] March And April 2022 Segment Reporting [Abstract] Segment Reporting [Abstract] Accounts payable Accounts Payable, Current Options, exercisable, weighted average remaining contractual term Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Mortgage and asset-backed securities Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value Restatement Determination Date: Restatement Determination Date [Axis] Investment, Name [Axis] Investment, Name [Axis] U.S. federal statutory tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Overdrawn cardholder balances from purchase transactions Reserve for uncollectible overdrawn accounts from purchase transactions Overdrawn Account Balances Due From Cardholders [Member] Overdrawn Account Balances due from Cardholders [Member] Commitments and contingencies (Note 21) Commitments and Contingencies Operating Leases Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Total segment profit Segment Profit (Loss) Segment Profit (Loss) Settlement obligations Settlement Liabilities, Current Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Income Taxes Income Tax Disclosure [Text Block] Deferred revenue Increase (Decrease) in Contract with Customer, Liability Concentration Risk [Line Items] Concentration Risk [Line Items] Leases Lessee, Leases [Policy Text Block] 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] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Loans to bank customers, net of allowance for credit losses of $11,383 and $9,078 as of December 31, 2023 and 2022, respectively Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss PEO Total Compensation Amount PEO Total Compensation Amount Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Level 3 Fair Value, Inputs, Level 3 [Member] Options outstanding, beginning balance (in shares) Options outstanding, ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Fair value Fair value Debt Securities, Available-for-Sale, Excluding Accrued Interest Due after five years through ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Schedule of Allowance for Loan Losses Financing Receivable, Allowance for Credit Loss [Table Text Block] Net income Net income Net income Net Income (Loss) Total current liabilities Liabilities, Current 90 Days or More Past Due Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Company Selected Measure Name Company Selected Measure Name Due after one year through five years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Leases Lessee, Operating Leases [Text Block] Corporate bonds Corporate Bond Securities [Member] Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Repurchases of Class A Common Stock Stock Repurchased During Period, Value Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Gross unrealized losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Options, exercised in period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Income before income taxes Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Domestic Internal Revenue Service (IRS) Internal Revenue Service (IRS) [Member] Award vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Name Measure Name Patents Patents [Member] Name Forgone Recovery, Individual Name Goodwill Goodwill Increases related to positions taken during prior years Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Measurement Basis [Axis] Measurement Basis [Axis] Underlying Securities Award Underlying Securities Amount Voting threshold (more than) Voting Threshold The threshold that if exceeded by a single holder, or group of affiliated holders, results in reduced voting power. Accounts receivable, net Increase (Decrease) in Accounts Receivable Fair Value Measurement [Domain] Fair Value Measurement [Domain] Forecast Forecast [Member] Unrealized holding income (loss), net of tax OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Transferred point in time Transferred at Point in Time [Member] Deferred expenses Deferred Costs, Noncurrent Prepaid expenses and other assets Prepaid Expense and Other Assets, Noncurrent Operating lease liabilities Operating Lease, Liability, Noncurrent Schedule of Maturity Dates for Available-for-Sale Investment Securities Investments Classified by Contractual Maturity Date [Table Text Block] Nonperforming loans Financing Receivable, Nonaccrual Facility term Debt Instrument, Term Time deposits, denominations less than $250 Time Deposits, Less Than $250,000 Time Deposits, Less Than $250,000 Gift card, average useful life Gift Card, Average Useful Life Gift Card, Average Useful Life Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Investment securities available-for-sale, at fair value Debt Securities, Available-for-Sale, Excluding Accrued Interest, Noncurrent Financial Assets Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Schedule of Maturities of Operating Lease Liabilities Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Unrestricted Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Allowance for doubtful accounts receivable, write-offs activity period Allowance For Doubtful Accounts Receivable, Write-offs, Activity Period Allowance For Doubtful Accounts Receivable, Write-offs, Activity Period Schedule of Fair Value of Assets Not Carried at Fair Value Fair Value, by Balance Sheet Grouping [Table Text Block] Product and Service [Domain] Product and Service [Domain] Other Performance Measure, Amount Other Performance Measure, Amount Schedule of Additional Lease Information Lease, Cost [Table Text Block] Investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Regulatory Requirements Regulatory Capital Requirements under Banking Regulations [Text Block] Plan Name [Domain] Plan Name [Domain] Total Past Due Financial Asset, Past Due [Member] Cost not yet recognized, excluding options Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Options, outstanding, weighted average remaining contractual term Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Loans to Bank Customers Financing Receivable [Policy Text Block] Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Trading Arrangement: Trading Arrangement [Axis] Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Use of Estimates and Assumptions Use of Estimates, Policy [Policy Text Block] IRC 162(m) limitation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Executive Compensation, Percent Effective Income Tax Rate Reconciliation, Nondeductible Expense, Executive Compensation, Percent Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service [Axis] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Fair value Debt Securities, Available-for-Sale [Abstract] Entity File Number Entity File Number Loss Contingencies [Table] Loss Contingencies [Table] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five B2B Services B2B Services [Member] B2B Services [Member] Due in 2024 Time Deposit Maturities, Year One Auditor Firm ID Auditor Firm ID Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Amortization of intangible assets Amortization of acquired intangible assets Amortization of Intangible Assets Interchange revenues Interchange Revenues [Member] Interchange Revenues [Member] Entity Shell Company Entity Shell Company Restatement Determination Date Restatement Determination Date Interest income, net Revenue Not from Contract with Customer Income tax receivable/payable Increase (Decrease) in Income Taxes Payable Increases related to positions taken during the current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Regulatory Agency [Domain] Regulatory Agency [Domain] Unrestricted cash, cash equivalents and restricted cash, beginning of period Unrestricted cash, cash equivalents and restricted cash, end of period Total unrestricted cash, cash equivalents and restricted cash, end of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Denominator: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Impairment of Long-Lived Assets Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] 12 months or more Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Common stock, shares, issued (in shares) Common Stock, Shares, Issued Severance costs Severance Costs Total assets Assets, Fair Value Disclosure Total unrealized loss Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Canceled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Forfeitures and Expirations Defined contribution plan, employer matching contribution, percent of match Defined Contribution Plan, Employer Matching Contribution, Percent of Match Common Class A Common Class A [Member] Cost not yet recognized, period for recognition Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Other financing activities Proceeds from (Payments for) Other Financing Activities Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Federal Reserve Board Federal Reserve Board [Member] Federal Reserve Board Outstanding, beginning balance (in shares) Outstanding, ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number Domestic Tax Authority Domestic Tax Authority [Member] Entity Address, Address Line One Entity Address, Address Line One Receivable Type [Axis] Receivable Type [Axis] Financial Liabilities Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Subsequent Event [Table] Subsequent Event [Table] Weighted-Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Capital Banking Regulation, Total Capital, Actual Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Subsequent Event Subsequent Event [Member] Tier one common equity Tier One Common Equity Tier One Common Equity Income tax penalties and interest accrued Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Operating loss carryforwards Operating Loss Carryforwards Schedule of Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Other accrued liabilities Other Liabilities, Current Accelerated share repurchases, price per share (in USD per share) Accelerated Share Repurchases, Final Price Paid Per Share Income Statement [Abstract] Income Statement [Abstract] Goodwill and Intangible Assets Goodwill and Intangible Assets, Intangible Assets, Indefinite-Lived, Policy [Policy Text Block] Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Outstanding Loans [Line Items] Financing Receivable, Credit Quality Indicator [Line Items] Accrued liabilities Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Common stock issued under stock plans, net of withholdings and related tax effects Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Class of Stock [Line Items] Class of Stock [Line Items] Diluted earnings per Class A common share Earnings Per Share, Diluted [Abstract] Fair Value of Financial Instruments Financial Instruments Disclosure [Text Block] Time deposits, denominations greater than or equal to $250 Time Deposits, $250,000 Or More Time Deposits, $250,000 Or More Equity method investments Equity Method Investments Tier one leverage capital required to be well capitalized Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum Defined Contribution Plan [Abstract] Defined Contribution Plan [Abstract] Land Land [Member] Financial Instrument [Axis] Financial Instrument [Axis] Income tax examination, period Income Tax Examination Period Income Tax Examination Period Sales and Marketing Expenses Advertising Cost [Policy Text Block] Total Shareholder Return Amount Total Shareholder Return Amount Repurchase of Class A common stock Payments for Repurchase of Common Stock Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Foreign Deferred Foreign Income Tax Expense (Benefit) Segments [Domain] Segments [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Due in 2027 Time Deposit Maturities, Year Four Retained earnings Retained Earnings (Accumulated Deficit) Settlement Assets, Obligations to Customers and Settlement Obligations Settlement Assets And Obligations Policy [Policy Text Block] Entity's settlement asset and obligations accounting policy. Current assets: Assets, Current [Abstract] Leases [Abstract] Leases [Abstract] Entity Address, State or Province Entity Address, State or Province Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net changes in loans Payments for (Proceeds from) Loans Receivable Proceeds from maturities of available-for-sale securities Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Basic earnings per Class A common share Earnings Per Share, Basic [Abstract] Basic earnings per common share (in USD per share) Basic earnings per Class A common share (in USD per share) Earnings Per Share, Basic, Undistributed Tier one risk based capital to risk weighted assets Banking Regulation, Tier 1 Risk-Based Capital Ratio, Actual Defined contribution plan, maximum annual contribution per employee Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Other Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Class of Stock [Domain] Class of Stock [Domain] Customer [Domain] Customer [Domain] Net income allocated to Class A common stockholders Net Income (Loss) Available to Common Stockholders, Basic Options Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Total segment revenues Segment Revenues Segment Revenues Legal settlement expenses Litigation Settlement, Expense Effective tax rate Effective Income Tax Rate Reconciliation, Percent Total lease liabilities Operating Lease, Liability Organization Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Defined contribution plan, cost Defined Contribution Plan, Cost All Executive Categories All Executive Categories [Member] Fee advances, net Fee Advances [Member] Fee Advances [Member] Total time deposits Time Deposits Plan Name [Axis] Plan Name [Axis] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Related income tax benefit Share-Based Payment Arrangement, Expense, Tax Benefit Number of reportable segments (in segments) Number of Reportable Segments Earnings Per Share [Abstract] Earnings Per Share [Abstract] Capital required to be well capitalized Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum Class A common stock, $0.001 par value; 100,000 shares authorized as of December 31, 2023 and 2022; 52,816 and 51,674 shares issued and outstanding as of December 31, 2023 and 2022, respectively Common Stock, Value, Issued Due after one year through five years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Trade names Trade Names [Member] 2010 Equity Incentive Plan 2010 Equity Incentive Plan [Member] The Plan authorizes the award of stock options, restricted stock awards, stock appreciation rights, restricted stock units, performance shares and stock bonuses. Deferred: Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Global intangible low-taxed income tax Effective Income Tax Rate Reconciliation, GILTI, Percent Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] All Individuals All Individuals [Member] Unrealized loss on available-for-sale securities Deferred Tax Assets, Unrealized Holding Losses Deferred Tax Assets, Unrealized Holding Losses Other expense, net Other expense, net Other Nonoperating Income (Expense) Entity Filer Category Entity Filer Category Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Statement [Table] Statement [Table] Current Fiscal Year End Date Current Fiscal Year End Date Authorized amount Stock Repurchase Program, Authorized Amount Schedule of Reconciliation of Effective Tax Rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Unrecognized tax benefits Beginning balance Ending balance Unrecognized Tax Benefits Income Tax Authority [Axis] Income Tax Authority [Axis] PEO Name PEO Name Non-Classified Pass [Member] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Base Rate Base Rate [Member] Loans to Bank Customers Financing Receivables [Text Block] Building Building Building [Member] Tax credit carryforwards Deferred Tax Assets, Tax Credit Carryforwards Stock-based compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-Based Compensation Cost Tier one risk based capital required to be well capitalized Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum Percentage of outstanding (as a percent) Financing Receivable, Percent Past Due Corporate and Other Corporate, Non-Segment [Member] Accelerated Share Repurchases, Date [Axis] Accelerated Share Repurchases, Date [Axis] Other, net Increase (Decrease) in Other Operating Assets and Liabilities, Net Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Total stockholders’ equity Balance at the beginning of the period Balance at the end of the period Equity, Attributable to Parent The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Balance in excess of collateral balance charged off threshold Balance In Excess Of Collateral Balance Charged Off Threshold Balance In Excess Of Collateral Balance Charged Off Threshold Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Concentration Risk by Type [Axis] Concentration Risk Type [Axis] Subsequent Events [Abstract] Subsequent Events [Abstract] Fair Value Fair Value Measurement, Policy [Policy Text Block] Nonperforming Loans [Line Items] Financing Receivable, Past Due [Line Items] Level 2 Fair Value, Inputs, Level 2 [Member] Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Weighted Average Useful Lives Finite-Lived Intangible Asset, Useful Life 2027 Lessee, Operating Lease, Liability, to be Paid, Year Four Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted Operating lease expense Operating Lease, Expense Options outstanding, beginning balance, weighted average exercise price (in USD per share) Options outstanding, ending balance, weighted average exercise price (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Stock-based compensation Total stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Base Rate, Condition Two Base Rate, Condition Two [Member] Base Rate, Condition Two [Member] Schedule of Contractual Maturities For Total Time Deposits Contractual Maturities For Total Time Deposits [Table Text Block] Contractual Maturities For Total Time Deposits City Area Code City Area Code Financial Asset, Period Past Due [Domain] Financial Asset, Aging [Domain] Earnings per Common Share Earnings Per Share [Text Block] Product and Service [Axis] Product and Service [Axis] Ownership percentage Equity Method Investment, Ownership Percentage Document Fiscal Year Focus Document Fiscal Year Focus Deposits Total deposits Deposits Remaining lease term Lessee, Operating Lease, Term of Contract Total interest-bearing deposit accounts Interest-Bearing Deposit Liabilities Computer software purchased Computer software purchased Software and Software Development Costs [Member] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Receivables [Abstract] Receivables [Abstract] Schedule of Stock Option Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] Exercise Price Award Exercise Price Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Number of retail locations (more than) Number Of Retail Locations Number Of Retail Locations Tier one leverage capital Banking Regulation, Tier 1 Leverage Capital, Actual Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Cash paid for income taxes Income Taxes Paid, Net Customer Relationships and Trade Names Customer Relationships and Trade Names [Member] Customer Relationships and Trade Names [Member] Total liabilities and stockholders’ equity Liabilities and Equity Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Initiated reduction in workforce, percentage Restructuring and Related Cost, Number of Positions Eliminated, Period Percent Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Foreign Current Foreign Tax Expense (Benefit) Amounts Due to Card Issuing Banks for Overdrawn Accounts Amounts Due To Card Issuing Banks For Overdrawn Accounts [Policy Text Block] Are policy for amounts due to card issuing banks for overdrawn accounts. Diluted net income allocated to Class A common stockholders Net Income (Loss) Available to Common Stockholders, Diluted Arrangement Duration Trading Arrangement Duration Entity Address, City or Town Entity Address, City or Town Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Schedule of Reportable Segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Mortgage and asset-backed securities Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Remaining authorized amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Termination Date Trading Arrangement Termination Date Net changes in deposits Increase (Decrease) in Deposits Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common Stock Other Than Class A Member Common Stock Other Than Class A [Member] Common Stock Other Than Class A Available-for-sale securities Debt Securities, Available-for-Sale Financial Asset, Period Past Due [Axis] Financial Asset, Aging [Axis] Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Exercised Gross unrealized gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Unrealized loss Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Consumer Services Consumer Services [Member] Consumer Services Award Timing Disclosures [Line Items] Tier one leverage capital to average assets Banking Regulation, Tier 1 Leverage Capital Ratio, Actual Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Vested in period, total fair value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Time deposits, at or above FDIC insurance limit Time Deposits, at or Above FDIC Insurance Limit Additional paid-in capital Additional Paid in Capital Due after five years through ten years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Loans to bank customers, net of allowance Loans Receivable, Fair Value Disclosure Noninterest-bearing Deposit Liabilities, by Component [Abstract] Noninterest-Bearing Deposit Liabilities, by Component [Abstract] Income Taxes Income Tax, Policy [Policy Text Block] Prepaid expenses and other assets Prepaid Expense and Other Assets, Current 2026 Finite-Lived Intangible Asset, Expected Amortization, Year Three Total Outstanding Financing Receivable, before Allowance for Credit Loss Municipal bonds Municipal Bonds [Member] Insider Trading Arrangements [Line Items] Installment Installment Installment Member [Member] Installment Member Other general and administrative expenses Other General and Administrative Expense Options, outstanding, intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Common stock issued under stock plans, net of withholdings and related tax effects (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Entity Registrant Name Entity Registrant Name Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Award Timing Method Award Timing Method [Text Block] Foreign tax rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Two Adjustment to Compensation, Amount Adjustment to Compensation Amount Change in fair value of contingent consideration Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability Auditor Name Auditor Name Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Less accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Schedule of Assets and Liabilities Carried at Fair Value Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Options, exercisable, weighted average exercise price (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Money Movement Services Money Management Services Segment [Member] Money Management Services Segment Entity Central Index Key Entity Central Index Key Stock based compensation and related employer taxes Share-Based Payment Arrangement, Expense Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Gross Carrying Value Finite-Lived Intangible Assets, Gross Income Tax Authority [Domain] Income Tax Authority [Domain] Sales Revenue, Net Revenue Benchmark [Member] Name Trading Arrangement, Individual Name Months to settle overdrawn accounts Expected Period To Settle Overdrawn Accounts The number of months generally expected to settle overdrawn accounts. Walmart Walmart [Member] Walmart. Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Risks and Uncertainties [Abstract] Operating revenues Revenue from Contract with Customer, Excluding Assessed Tax Entity [Domain] Entity [Domain] Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Amendment Flag Amendment Flag Legal Entity [Axis] Legal Entity [Axis] Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Tax Period [Domain] Tax Period [Domain] Software licenses Licensing Agreements [Member] Uncollectible Overdrawn Accounts [Roll Forward] SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Interest expense, net Interest expense, net Interest Income (Expense), Net Assets Assets, Fair Value Disclosure [Abstract] Due in one year or less Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Tenant improvements Leasehold Improvements [Member] Diluted weighted-average common shares issued and outstanding (in shares) Diluted weighted-average Class A shares issued and outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Axis] Operating expenses: Operating Expenses [Abstract] Accelerated Share Repurchases, Date [Domain] Accelerated Share Repurchases, Date [Domain] Payments for property, equipment and internal-use software Payments to Acquire Property, Plant, and Equipment Company Selected Measure Amount Company Selected Measure Amount Total assets Assets Name Awards Close in Time to MNPI Disclosures, Individual Name Share Repurchase Program [Axis] Share Repurchase Program [Axis] Stock-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Compensation and benefits expenses Labor and Related Expense Segment Reconciling Items Segment Reconciling Items [Member] Deferred expenses Increase (Decrease) in Deferred Charges Interest rate (as a percent) Debt Instrument, Interest Rate During Period Vested (in USD 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 Non-NEOs Non-NEOs [Member] Single BaaS Partner Single BaaS Partner [Member] Single BaaS Partner Financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Non-PEO NEO Non-PEO NEO [Member] Adjustment to Compensation: Adjustment to Compensation [Axis] Capital contributions, authorized amount Limited Partners' Annual Contributed Capital, Authorized Amount Limited Partners' Annual Contributed Capital, Authorized Amount Actual adjustment for certified performance periods (in USD per share) Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Adjustment For Certified Performance Periods, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Adjustment For Certified Performance Periods, Weighted Average Grant Date Fair Value Scenario [Axis] Scenario [Axis] Net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards Basic weighted-average common shares issued and outstanding (in shares) Weighted-average Class A shares issued and outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Property and equipment, net Deferred Tax Liabilities, Property, Plant and Equipment Tier one risk based capital Banking Regulation, Tier 1 Risk-Based Capital, Actual Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Operating revenues: Revenues [Abstract] Estimated Amortization Expense, Next Five Years [Abstract] Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Due in 2026 Time Deposit Maturities, Year Three Proceeds from exercise of options and ESPP purchases Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Including Option Exercised Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Statement [Line Items] Statement [Line Items] Concentration Risk [Table] Concentration Risk [Table] Intangible assets Deferred Tax Liabilities, Intangible Assets Schedule of Available-for-sale Investment Securities Debt Securities, Available-for-Sale [Table Text Block] Borrowings on revolving line of credit Proceeds from Long-Term Lines of Credit Regulatory Requirements [Abstract] Regulatory Requirements [Abstract] Regulatory Requirements [Abstract] Amortized cost Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract]