Performance adjustment (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Performance Adjustment In Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Performance Adjustment In Period Tax Receivable Agreement adjustment Effective Income Tax Rate Reconciliation, Other Reconciling Items, Percent Business Acquisition [Axis] Business Acquisition [Axis] DW SEF Dw Sef Llc [Member] DW SEF LLC (DW SEF) is a swap execution facility regulated by the Commodities Future Trading Commission. TWL Tradeweb Llc [Member] Tradeweb LLC (TWL) is a registered broker-dealer under the Securities Exchange Act of 1934, a member of the Financial Industry Regulatory Authority, a registered independent introducing broker with the Commodities Future Trading Commission and a member of the National Futures Association. Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Foreign Current Foreign Tax Expense (Benefit) Total future lease payments Lessee, Operating Lease, Liability, to be Paid Translation of Foreign Currency and Foreign Currency Forward Contracts Foreign Currency Transactions and Translations Policy [Policy Text Block] Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Credit loss expense (reversal) Accounts Receivable, Credit Loss Expense (Reversal) Related Party Transactions [Abstract] Related Party Transactions [Abstract] Deferred tax asset Deferred Income Tax Assets, Net Letter of credit issued Long-Term Debt, Gross Entity Address, Postal Zip Code Entity Address, Postal Zip Code Wholesale Wholesale Client Sector [Member] The wholesale client sector. Deferred: Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding 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] Business Combinations Business Combinations Policy [Policy Text Block] Performance adjustment (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Performance Adjustment In Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Performance Adjustment In Period, Weighted Average Grant Date Fair Value Summary of Intangible Assets Which Have an Indefinite Useful Life Schedule of Indefinite-Lived Intangible Assets [Table Text Block] TW SEF Tw Sef Llc [Member] TW SEF LLC (TW SEF) is a swap execution facility regulated by the Commodities Future Trading Commission. Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Amortization expense related to capitalized software development costs Non-Capitalized Computer Software Amortization Non-Capitalized Computer Software Amortization Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Deferred revenue Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue Foreign currency forward contracts Foreign Exchange Contract [Member] Floor Debt Instrument Floor Rate The Percentage of floor rate under debt instrument. Additional paid-in capital Additional Paid in Capital Percentage of amount of U.S. federal, state and local income or franchise tax savings Tax Receivable Agreement, Percentage Of Amount Of Federal, State And Local Income Or Franchise Tax Savings The percentage of amount of U.S. federal, state and local income or franchise tax savings under the tax receivable agreement. Spread Debt Instrument, Basis Spread on Variable Rate Tax receivable agreement liability adjustment Tax receivable agreement liability adjustment Tax receivable agreement liability adjustment Tax Receivable Agreement Liability, Adjustment Tax Receivable Agreement Liability, Adjustment Regulatory Capital Requirements Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Statistical Measurement [Domain] Statistical Measurement [Domain] Research and Development [Abstract] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-Lived Intangible Assets, Major Class Name [Domain] Depreciation expense Depreciation Exercises (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Schedule of Indefinite-Lived Intangible Assets [Table] Schedule of Indefinite-Lived Intangible Assets [Table] Total net deferred tax asset (liability) Deferred Tax Assets, Net Underlying Asset Class [Axis] Underlying Asset Class [Axis] Weighted average borrowing rate Operating Lease, Weighted Average Discount Rate, Percent Schedule of Revenue and Long-Lived Assets by Geographic Location Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Vested options outstanding (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Grant Date Fair Value Activities related to the follow-on offering and other exchanges of LLC Interests, net of offering costs and cancellations Stock Issued During Period, Value, Conversion of Convertible Securities Long-lived assets Long-Lived Assets Adjustment in customer relationships Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles United States Domestic Tax Authority [Member] Effect of exchange rate changes on cash, cash equivalents and restricted cash Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Dividends payable Dividends Payable State and Local Current State and Local Tax Expense (Benefit) Aggregate value of share repurchase Treasury Stock, Value, Acquired, Cost Method Number of votes per common stock Number Of Votes Per Common Stock Number Of Votes Per Common Stock Net income attributable to Tradeweb Markets Inc. Net income attributable to Tradeweb Markets Inc. Net Income (Loss) Attributable to Parent Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive shares (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount TWEU Tradeweb Eu Bv [Member] Tradeweb EU B.V. (TWEU) is a trading venue and approved publication arrangement regulated by the Netherlands Authority for the Financial Markets. Percentage of performance modifier Percentage of Performance Modifier Percentage of Performance Modifier Subsequent Event Type [Axis] Subsequent Event Type [Axis] Exercises (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Weighted Average Grant Date Fair Value Fed Funds Effective Rate Fed Funds Effective Rate Overnight Index Swap Rate [Member] Equity-Settled PRSUs Performance Shares Settled With Equity [Member] Performance Shares Settled With Equity Share Repurchase Program [Domain] Share Repurchase Program [Domain] Other Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Equity Component [Domain] Equity Component [Domain] Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table] Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Fair Value, Nonrecurring Fair Value, Nonrecurring [Member] Adjustment in other assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Assets Total assets measured at fair value Assets, Fair Value Disclosure Ownership [Axis] Ownership [Axis] Vesting percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Increase in current year tax positions Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Leases Lessee, Operating Leases [Text Block] Components of Uncertain Tax Positions Summary of Income Tax Contingencies [Table Text Block] Reconciliation of the statutory tax rate Effective Income Tax Rate Reconciliation, Percent [Abstract] Related Party [Domain] Related Party [Domain] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Fair Value Measurement Fair Value Measurement, Policy [Policy Text Block] Hedging Designation [Domain] Hedging Designation [Domain] Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Forfeitures and adjustments (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Derivative Instrument [Axis] Derivative Instrument [Axis] Noncontrolling Interest [Abstract] Noncontrolling Interest [Abstract] Conversion ratio Common Stock Conversion Ratio Common Stock Conversion Ratio Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Entity Address, State or Province Entity Address, State or Province Quoted Prices in active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Refinitiv Direct Owner Refinitiv Direct Owner [Member] Refinitiv Direct Owner Award, options, outstanding, weighted average remaining contractual term Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Award Type [Axis] Award Type [Axis] Equity Members' Equity [Abstract] Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Settlements Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities LLC Interests Limited Liability Company Units [Member] Limited Liability Company Units Expired (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period Summary of Outstanding RSUs Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Adjustments to reconcile net income to net cash provided by (used in) operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing [Axis] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Excess Financial Resources Futures Commission Merchant, Commodity Exchange Act, Excess Net Capital Forfeitures and adjustments (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Deferred tax asset Other Noncash Income Tax Expense Penalties payable Income Tax Examination, Penalties Accrued Accounts receivable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Software development costs Capitalized Computer Software, Gross Equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Document Annual Report Document Annual Report Legal Entity [Axis] Legal Entity [Axis] Total liabilities Liabilities Weighted average remaining lease term (years) Operating Lease, Weighted Average Remaining Lease Term Number of share owned (in shares) Number of share owned Number of share owned. Geographical [Axis] Geographical [Axis] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Number of LLC Interests held by Tradeweb Markets Inc. (in shares) Minority Interest Number Of Interests Held By Parent The parent entity's interest in the subsidiary. Adjustment in goodwill Goodwill, Purchase Accounting Adjustments Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Lease right-of-use assets obtained in exchange for lease liabilities, net of modifications and terminations Right-of-Use Asset Obtained In Exchange For Operating Lease Liability Net Of Modifications Right-of-Use Asset Obtained In Exchange For Operating Lease Liability Net Of Modifications Cash and cash equivalents Less: Cash acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Issuance of common stock from equity incentive plans Stock Issued During Period, Value, New Issues Receivable from affiliates Receivable from affiliates – Foreign currency forward contracts Due from Affiliates Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Allowance for Credit Losses Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block] Risks and Uncertainties [Abstract] Risks and Uncertainties [Abstract] Conversion of common stock (in shares) Conversion of Stock, Shares Converted Revolving Credit Facility Revolving Credit Facility [Member] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Current: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Document Type Document Type Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Useful life Property, Plant and Equipment, Useful Life Equity-Settled PRSUs RSUs Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Reconciliation of cash, cash equivalents and restricted cash as shown on the statements of financial condition: Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract] Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilities [Member] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Balance outstanding at end of period (in dollars per share) Balance outstanding at beginning of period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Product and Service [Domain] Product and Service [Domain] Entity Shell Company Entity Shell Company Class B Common Stock Common Class B [Member] Deferred taxes Total deferred tax expense Deferred Income Tax Expense (Benefit) Tax Receivable Agreement Tax Receivable Agreement Liability Disclosure [Text Block] The entire disclosure of tax receivable agreement liability. Decrease in prior year tax positions Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Deferred revenue Increase (Decrease) in Deferred Revenue Deferred taxes arising from issuance of common stock from equity incentive plans Adjustments to Additional Paid in Capital, Income Deferred Income Tax Effect from Share Repurchases Adjustments to Additional Paid in Capital, Income Deferred Income Tax Effect from Share Repurchases 2023 Lessee, Operating Lease, Liability, to be Paid, Year One (Increase) decrease in operating assets: Increase (Decrease) in Operating Assets [Abstract] Deferred tax liabilities Components of Deferred Tax Liabilities [Abstract] Affiliated Entity Affiliated Entity [Member] Payments on tax receivable agreement liability Payments on Tax Receivable Agreement, Liability Payments on Tax Receivable Agreement, Liability Subsequent Event Subsequent Event [Member] Non-employees Share-Based Payment Arrangement, Nonemployee [Member] Schedule of Recognized Revenue and Remaining Deferred Revenue Balance Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Deposits with Clearing Organizations Deposits With Clearing Organizations [Policy Text Block] Disclosure of accounting policy for deposits with clearing organizations. Document Period End Date Document Period End Date Passage of time Share-Based Payment Arrangement, Tranche One [Member] Class C Common Stock Common Class C [Member] TESL Tradeweb Execution Services Limited [Member] Tradeweb Execution Services Limited Conversion ratio Noncontrolling Interest, Conversion Ratio The conversion ratio of shares of non-controlling interests. Employee equity compensation payable Increase Decrease In Equity Compensation Payable The increase (decrease) during the period in equity compensation payable. Equity Compensation Effective Income Tax Rate Reconciliation, Equity Compensation, Percent Effective Income Tax Rate Reconciliation, Equity Compensation, Percent Total assets Assets Secured Operating Lease Secured Operating Lease [Member] Secured Operating Lease Earnings per share attributable to Tradeweb Markets Inc. Class A and B common stockholders: Earnings Per Share [Abstract] Earnings Per Share [Abstract] Income Statement Location [Axis] Income Statement Location [Axis] Schedule of Fair Value Measurements Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Schedule of the Ownership Interest in Noncontrolling Interest Schedule Of Ownership Interest In Noncontrolling Interest [Table Text Block] Tabular disclosure of ownership interest in noncontrolling interest. Accrued compensation Employee-related Liabilities Tax Receivable Agreement Tax Receivable Agreement No definition available. Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract] Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract] Schedule of Non-capitalized Software Costs and Routine Maintenance Costs Schedule Of Non Capitalized Computer Software [Table Text Block] Schedule Of Non Capitalized Computer Software Exercises (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price 2027 Lessee, Operating Lease, Liability, to be Paid, Year Five Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Accounting Policies [Abstract] Accounting Policies [Abstract] Share repurchase program, amount authorized Stock Repurchase Program, Authorized Amount Schedule of Financial Resources and Liquid Financial Resources Futures Commission Merchant, Minimum Financial Requirement [Table Text Block] Shares issued to underwriters (in shares) Stockholders' Equity Note [Abstract] Schedule of Regulatory Capital Requirements Schedule Of Regulatory Capital Requirements [Table Text Block] Tabular disclosure of the regulatory capital requirements and regulatory capital for entities subject to regulation. Income before taxes Income before taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Foreign tax rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent Earnings Per Share Earnings Per Share [Text Block] Non-Controlling Interests Noncontrolling Interest Disclosure [Text Block] Payable to affiliates Payable to affiliates – Foreign currency forward contracts Due to Affiliate Customer [Axis] Customer [Axis] Adjustment in accounts payable, accrued expenses and other liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Decrease In Accounts Payable, Accrued Expenses And Other Liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accounts Payable, Accrued Expenses And Other Liabilities Receivable from/payable to affiliates, net Increase (Decrease) Due from Affiliates Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Related Party Transactions Related Party Transaction [Line Items] Components of Provisions for Income Taxes Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Award Type [Domain] Award Type [Domain] Grantee Status [Axis] Grantee Status [Axis] Weighted-average recognition period (in years) Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Award, options, exercisable, weighted average remaining contractual term Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term EA Execution Access [Member] Execution Access Intangible Assets That are Subject to Amortization Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of Financial Instruments Not Measured at Fair Value Fair Value, by Balance Sheet Grouping [Table Text Block] Derivative Contract [Domain] Derivative Contract [Domain] Entity Registrant Name Entity Registrant Name Issuance of common stock from equity incentive plans (in shares) Issuance of common stock, net of offering costs and cancellations (in shares) Stock Issued During Period, Shares, New Issues Number of LLC Interests held by non-controlling interests (in shares) Minority interest Number Of Interests Held By Noncontrolling Owners The equity interest of noncontrolling shareholders. Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Subsequent Events Subsequent Events [Text Block] Software development costs Software Development [Member] Accounts payable, accrued expenses and other liabilities Accounts Payable and Accrued Liabilities Customer Relationships Customer Relationships [Member] Follow On Offering Follow On Offering [Member] Follow On Offering Entity Address, City or Town Entity Address, City or Town Purchase of LLC Interests Payments for Repurchase of Redeemable Noncontrolling Interest Leases [Abstract] Expenses Operating Expenses [Abstract] Total equity Beginning balance Ending balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Employees Share-Based Payment Arrangement, Employee [Member] Net operating losses Deferred Tax Assets, Operating Loss Carryforwards Pushdown Accounting Consolidation, Policy [Policy Text Block] Adjustments to non-controlling interests Minority Interest Increase Decrease From Adjustments Amount of increase (decrease) in noncontrolling interest from adjustments. Minimum Minimum [Member] Non-controlling interests Stockholders' Equity Attributable to Noncontrolling Interest Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Entity Emerging Growth Company Entity Emerging Growth Company Accumulated amortization Capitalized Computer Software, Accumulated Amortization Occupancy Occupancy, Net Common stock, par value (in dollars per share) Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Contract with Customer, Basis of Pricing [Domain] Contract with Customer, Basis of Pricing [Domain] Intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Auditor Name Auditor Name Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Weighted average share price (in dollars per share) Share Price Net operating loss carryforwards Operating Loss Carryforwards Trading Symbol Trading Symbol Entity File Number Entity File Number Transaction fees and commissions Transaction Fee Revenue [Member] Transaction fee revenues, both variable and fixed, recorded at a point in time when the trade occurs. Average price per share (in dollars per share) Treasury Stock Acquired, Average Cost Per Share Threshold percentage of economic interest for conversion Threshold Percentage of Economic Interest For Conversion Threshold Percentage of Economic Interest For Conversion Excess Regulatory Capital Excess Regulatory Capital Amount by which the entity's regulatory capital (as defined) exceeds the requirement. Subscription fees Subscription Fee And Market Data Revenue [Member] Subscription fee revenue from granting access to institutional investors to the entity's electronic marketplaces and fees from the sale of market data to Refinitiv. 2026 2026 Finite-Lived Intangible Asset, Expected Amortization, Year Four Credit Risk Allowance for Credit Losses [Text Block] Increase in prior year tax positions Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Foreign Deferred Foreign Income Tax Expense (Benefit) Adjusted For Refinitiv Transaction Adjusted For Refinitiv Transaction [Member] Reflects a new basis of accounting resulting from the Refinitiv transaction. Title of Individual [Axis] Title of Individual [Axis] Grants (in shares) Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period RSUs Restricted Stock Units (RSUs) [Member] Entity Information [Line Items] Entity Information [Line Items] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Use of Estimates Use of Estimates, Policy [Policy Text Block] Cash equivalents – Money market funds Cash and Cash Equivalents, Fair Value Disclosure Acquisitions Business Combination Disclosure [Text Block] Restricted Cash Equivalents [Abstract] Restricted Cash Equivalents [Abstract] Remaining percentage of tax benefits Tax Receivable Agreement Remaining Percentage of Amount of Federal State and Local Income or Franchise Tax Savings The remaining percentage of amount of U.S. federal, state and local income or franchise tax savings under the tax receivable agreement. LIBOR London Interbank Offered Rate (LIBOR) [Member] Consulting service fee for follow on offering Consulting Service Fee for Follow on Offering The amount of consulting service incurred for follow on offering. Total Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net Subsequent Events [Abstract] Subsequent Events [Abstract] Retirement notice, term Retirement Notice, Term Retirement Notice, Term Accounts payable, accrued expenses and other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Income Taxes Income Tax Disclosure [Text Block] State and local Deferred State and Local Income Tax Expense (Benefit) Increase (decrease) in operating liabilities: Increase (Decrease) in Operating Liabilities [Abstract] Amortization expense Amortization of Intangible Assets Schedule of Goodwill Schedule of Goodwill [Table Text Block] Basic (in dollars per share) Earnings per share - Basic (in dollars per share) Earnings Per Share, Basic One-month LIBOR One Month London Inter Bank Offered Rate [Member] One Month London Inter Bank Offered Rate. 2025 Lessee, Operating Lease, Liability, to be Paid, Year Three Deposits with clearing organizations Deposits with clearing organizations Deposits with Clearing Organizations and Others, Securities Business Segment and Geographic Information Revenues from External Customers and Long-Lived Assets [Line Items] Fair value of vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Change in Contract with Customer Change In Contract with Customer, Liability [Roll Forward] Change In Contract with Customer, Liability Accounts payable, accrued expenses and other liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable Multiplier achieved, percentage Share-based Payment Arrangement, Multiplier Achieved, Percent Share-based Payment Arrangement, Multiplier Achieved, Percent Adjustment increase (decrease) Share-based Payment Arrangement, Multiplier Achieved, Adjustment Increase (Decrease) Share-based Payment Arrangement, Multiplier Achieved, Adjustment Increase (Decrease) Indefinite-lived Intangible Assets [Axis] Indefinite-Lived Intangible Assets [Axis] Total stockholders’ equity attributable to Tradeweb Markets Inc. Stockholders' Equity Attributable to Parent Forfeitures and adjustments (in dollars per share) Forfeitures (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Vesting [Domain] Vesting [Domain] Tax credits Deferred Tax Assets, Tax Credit Carryforwards Ownership [Domain] Ownership [Domain] Other Deferred Tax Assets, Other Entity Interactive Data Current Entity Interactive Data Current Non-Controlling Interests Noncontrolling Interest [Line Items] Shares issued to underwriters (in shares) Sale of Stock, Number of Shares Issued in Transaction Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Furniture, Equipment, Purchased Software and Leasehold Improvements Furniture Equipment And Purchased Software [Member] Furniture, equipment and purchased software. Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Numerator: Net Income (Loss) Attributable to Parent [Abstract] 2025 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Three Cash equivalents – Money market funds Money Market Funds [Member] Share-based payment arrangement, accelerated cost Share-Based Payment Arrangement, Accelerated Cost Retained Earnings Retained Earnings [Member] Business Segment and Geographic Information Segment Reporting Information [Line Items] Total LLC Interests outstanding Minority Interest Total Ownership Percentage The total ownership interest on noncontrolling interest expressed as a percentage. Common Stock Common Stock [Member] Schedule of Total Stock-based Compensation Expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Activity Related to the Company's Leases Lease, Cost [Table Text Block] Share repurchases pursuant to share repurchase programs Payments for Repurchase of Common Stock Class of Stock [Axis] Class of Stock [Axis] Summary of RSU Activity Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] Income Tax Income Tax, Policy [Policy Text Block] Income Tax Disclosure [Line Items] Operating Loss Carryforwards [Line Items] Statement [Table] Statement [Table] Vests (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Schedule of Equity-Settled PRSUs Issued Schedule of Nonvested Performance-Based Units Activity [Table Text Block] Statistical Measurement [Axis] Statistical Measurement [Axis] Common stock repurchased (in shares) Treasury Stock, Shares, Acquired Total Fair Value Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Less: Foreign currency translation adjustments attributable to non-controlling interests Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest Income (loss) from investments (Income) loss from investments Equity Securities, FV-NI, Realized Gain (Loss) Indefinite-lived intangible assets Indefinite-Lived Intangible Assets (Excluding Goodwill) Grantee Status [Domain] Grantee Status [Domain] Retained earnings Retained Earnings (Accumulated Deficit) Accounts receivable, net of allowance for credit losses of $129 and $273 at December 31, 2022 and 2021, respectively Accounts receivable Account receivable excluding receivable from brokers and dealers and clearing organizations, net of allowance Account receivable excluding receivable from brokers and dealers and clearing organizations, net of allowance. Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Equity Components [Axis] Equity Components [Axis] Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract] Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract] Vested options outstanding (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Related Party Transactions Related Party Transactions Disclosure [Text Block] Stock-based compensation expense under the plan APIC, Share-Based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition Expired (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Document Fiscal Year Focus Document Fiscal Year Focus Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Cancellation ratio Common Stock Cancellation Ratio Common Stock Cancellation Ratio Statement [Line Items] Statement [Line Items] Liquid Financial Assets Liquid Financial Assets Liquid financial assets calculated under the Commodity Exchange Act. Financial Resources Futures Commission Merchant, Commodity Exchange Act, Adjusted Net Capital Balance outstanding at beginning of period (in shares) Balance options outstanding at end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number 2022 Share Repurchase Program 2022 Share Repurchase Program [Member] 2022 Share Repurchase Program Intangible assets with indefinite useful lives Indefinite-Lived Intangible Assets [Line Items] Deferred Offering Costs Deferred Charges, Policy [Policy Text Block] Variable Rate [Domain] Variable Rate [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Cost Finite-Lived Intangible Assets, Gross Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Required Financial Resources Futures Commission Merchant, Commodity Exchange Act, Required Net Capital Loss Contingencies [Table] Loss Contingencies [Table] Total current tax expense Current Income Tax Expense (Benefit) Lease right-of-use assets Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Share repurchases pursuant to share repurchase programs Stock Repurchased During Period, Value Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Equity Investments Without Readily Determinable Fair Values Equity Securities without Readily Determinable Fair Value [Policy Text Block] Receivable from and Payable to Brokers and Dealers and Clearing Organizations Industry-Specific Policies, Broker-Dealer [Policy Text Block] Auditor Firm ID Auditor Firm ID Document Transition Report Document Transition Report Foreign Foreign Tax Authority [Member] Local Phone Number Local Phone Number Deferred costs Deferred Offering Costs Schedule of Options Issued Share-Based Payment Arrangement, Option, Activity [Table Text Block] Operating income Operating Income (Loss) Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Deposits with clearing organizations Increase (Decrease) in Deposit Assets Equity investment without readily determinable fair value Equity Securities without Readily Determinable Fair Value, Amount State and local State and Local Jurisdiction [Member] Accounts receivable Accounts Receivable, Related Parties Weighted average shares outstanding: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Common stock, shares outstanding (in shares) Beginning balance ( in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Goodwill Balance at beginning of period Balance at end of period Goodwill Shares contributed by Refinitiv Owner (in shares) Stock Contributed During Period Acquiree Majority Owner Stock Contributed During Period Acquiree Majority Owner Total Liabilities, Fair Value Disclosure Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] TWD Tradeweb Direct Llc [Member] Tradeweb Direct LLC (TWD) is a registered broker-dealer under the Securities Exchange Act of 1934, and a member of the Financial Industry Regulatory Authority. Share repurchases pursuant to the share repurchase programs (in shares) Stock Repurchased During Period, Shares Required Liquid Financial Assets Required Liquid Financial Assets Amount of liquid financial assets required to be maintained under the Commodity Exchange Act. 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Establishment of liabilities under Tax Receivable Agreement Liabilities Assumed Commitments and Contingencies Loss Contingencies [Line Items] Contract with Customer, Liability, Related Parties Contract with Customer, Liability, Related Parties Amount of obligation to transfer good or service to related parties for which consideration has been received or is receivable. Software Development Costs Internal Use Software, Policy [Policy Text Block] Deposits with clearing organizations Less: Deposits with clearing organizations acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits with Clearing Organizations General and administrative Other General and Administrative Expense ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Base rate Base Rate [Member] Common stock Common Stock, Value, Issued Bank Stockholders Bank Stockholders [Member] Information relating to the Bank Stockholders. Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Content and data Media Content [Member] Accrued compensation Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Employees Related Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Employees Related Liabilities Tax receivable agreement liability and deferred taxes arising from LLC Interest ownership exchanges and the issuance of common stock from equity incentive plans Adjustments to Additional Paid in Capital Tax Receivable Agreement Liability and Deferred Taxes Reorganization Transaction and IPO Amount of decrease to additional paid in capital (APIC) resulting from tax receivable agreement liability and deferred taxes arising from the reorganization transactions and IPO. Weighted-average grant-date fair value (in dollars per share) Grants (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Change from net income attributable to Tradeweb Markets Inc. and transfers (to) from non-controlling interests Net Income Attributable To Parent And Transfers (To) From Noncontrolling Interest The amount of net income (loss) attributable to parent and transfers (to) from noncontrolling interests. Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Intrinsic value of vested options outstanding and exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value TEL Tradeweb Europe Limited [Member] Tradeweb Europe Limited (TEL) is a Multilateral Trading Facility regulated by the Financial Conduct Authority in the UK, which maintains branches in Asia which are regulated by certain Asian securities regulators. Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Net Income Per Share Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Beginning of period End of period Cash, cash equivalents and restricted cash shown in the statement of cash flows Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Foreign currency translation adjustments, with no tax benefit for each of the years ended December 31, 2022, 2021 and 2020 Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Less: Net income attributable to non-controlling interests Less: Net income attributable to non-controlling interests Net Income (Loss) Attributable to Noncontrolling Interest Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Net income attributable to outstanding shares of Class A and Class B common stock - Basic Net Income (Loss) Available to Common Stockholders, Basic Foreign currency forward contracts – Gross notional amount Foreign Exchange Forward [Member] Proceeds from stock-based compensation exercises Proceeds from Stock Options Exercised Common stock, shares issued (in shares) Common Stock, Shares, Issued Furniture, equipment, software and leasehold improvement additions included in accounts payable Capital Expenditures Incurred but Not yet Paid Foreign currency transaction gain (loss), before tax Foreign Currency Transaction Gain (Loss), before Tax Transaction costs Business Combination, Acquisition Related Costs Income Statement Location [Domain] Income Statement Location [Domain] Fair Value of Financial Instruments Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Amendment Flag Amendment Flag Useful life of intangible assets Amortization Period Finite-Lived Intangible Asset, Useful Life Refinitiv Refinitiv [Member] Refinitiv, formerly the Thomson Reuters Financial & Risk Business. Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Operating lease expense included as a component of occupancy expense on the accompanying consolidated statements of income Operating Lease, Cost Professional fees Professional fees Professional Fees Intangible assets amortization period (in years) Finite-Lived Intangible Assets, Remaining Amortization Period Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax Comprehensive income attributable to Tradeweb Markets Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Subscription fees Subscription Fee Revenue [Member] Subscription fee revenue from granting access to institutional investors to the entity's electronic marketplaces. All-cash acquisition Purchase price, net of cash and deposits acquired and excluding working capital adjustments Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net of Acquired Cash and Restricted Cash, Deposits with Clearing Organizations Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net of Acquired Cash and Restricted Cash, Deposits with Clearing Organizations Goodwill recognized in connection with the NFI Acquisition Goodwill, Acquired During Period Schedule of Information Regarding Revenue by Client Sector Schedule of Segment Reporting Information, by Segment [Table Text Block] Entity Current Reporting Status Entity Current Reporting Status Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Deferred tax assets: Components of Deferred Tax Assets [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Accrued compensation Increase (Decrease) in Employee Related Liabilities Vested options outstanding (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Nonrecurring Adjustment [Axis] Nonrecurring Adjustment [Axis] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Chief Executive Officer Chief Executive Officer [Member] Statutory U.S. federal income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Initial term of lease Lessee, Operating Lease, Term of Contract Tradeweb Markets LLC TradeWeb Markets Llc [Member] Tradeweb Markets LLC. Schedule of Balances From Transactions with Affiliates Included in the Consolidated Statements Schedule of Related Party Transactions [Table Text Block] Schedule of Preliminary Purchase Price Allocated Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Derivative [Table] Derivative [Table] Options outstanding at beginning of period (in shares) Options outstanding at end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Other assets – Memberships in clearing organizations Receivables from Clearing Organizations Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Variable Variable Pricing [Member] Contract with customer in which amount of consideration is based on variable components such as transaction based fees. Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code State and local income taxes, net of federal income tax benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Other - See Note 14 Stockholders' Equity, Other Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Liabilities Liabilities [Abstract] Furniture, equipment, purchased software and leasehold improvements, net of accumulated depreciation and amortization Property, Plant and Equipment, Net Cash paid for amounts included in the measurement of operating lease liability Operating Lease, Payments Employee compensation and benefits Employee compensation and benefits Labor and Related Expense Entities [Table] Entities [Table] Estimated Annual Future Amortization for Existing Intangible Assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Options Share-Based Payment Arrangement, Option [Member] Title of Individual [Domain] Title of Individual [Domain] Dividends Dividends Technology and communications Communications and Information Technology Fixed Fixed-Price Contract [Member] Forfeitures and adjustments (in shares) Forfeitures (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Balance Sheet Location [Axis] Balance Sheet Location [Axis] Other assets Other Assets Related Parties Other assets from related parties. Common stock, shares authorized (in shares) Common Stock, Shares Authorized Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Goodwill and Intangibles Deferred Tax Liabilities, Goodwill Foreign currency forward contracts not designated in accounting hedge relationship Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Maximum Maximum [Member] Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax 2019 Omnibus Equity Incentive Plan Omnibus2019 Equity Incentive Plan [Member] Represents the information pertaining to omnibus 2019 equity incentive plan. Class A Common Stock Common Class A [Member] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value April 2020 Follow-On Offering April Two Thousand And Twenty Follow On Offering [Member] April Two Thousand And Twenty Follow On Offering Income taxes paid, net of refunds Income Taxes Paid, Net Software Development Costs Software Development Costs [Abstract] Software Development Costs Weighted Average Grant-Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Revenue recognized that was previously deferred Contract with Customer, Liability, Revenue Recognized Business Acquisition [Line Items] Business Acquisition [Line Items] Entity Small Business Entity Small Business Measurement Frequency [Domain] Measurement Frequency [Domain] Number of reporting units Number of Reporting Units Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Distributions to non-controlling interests Payments Of Capital Distribution To Noncontrolling Interest Amount of cash outflow in the form of capital distribution to noncontrolling interests. Dividends (in dollars per share) Cash dividend declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Revenues Revenue: Revenues [Abstract] Net Carrying Amount Finite-Lived Intangible Assets, Net Distributions to non-controlling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Restricted cash Restricted cash Restricted Cash Income Tax Disclosure [Table] Operating Loss Carryforwards [Table] Significant Accounting Policies Significant Accounting Policies [Text Block] Unrecognized compensation expense Total unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Investment in partnership Deferred Tax Assets, Investments Revenues Disaggregation of Revenue [Abstract] DW Dealerweb [Member] Dealerweb Inc. (DW) is a registered broker-dealer under the Securities Exchange Act of 1934, a member of the Financial Industry Regulatory Authority, a registered independent introducing broker with the Commodities Future Trading Commission and a member of the National Futures Association. 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Business Combination and Asset Acquisition [Abstract] Class of Stock [Line Items] Class of Stock [Line Items] Lease liabilities Operating lease liabilities Lease liability Operating Lease, Liability Business Segment and Geographic Information Segment Reporting Disclosure [Text Block] Stock-Based Compensation Share-Based Payment Arrangement [Policy Text Block] Selling, General and Administrative Expenses Selling, General and Administrative Expenses [Member] Noncontrolling Interest [Table] Noncontrolling Interest [Table] 2024 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Two Class C and Class D Common Stock Class C and Class D Common Stock [Member] Class C and Class D Common Stock Liabilities and Equity Liabilities and Equity [Abstract] Grants (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Excess Liquid Financial Assets Excess Liquid Financial Assets The amount by which actual liquid financial assets exceeds (does not exceed) required liquid financial assets under the Commodity Exchange Act Working capital adjustments Working capital adjustments Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred Income Tax Authority [Axis] Income Tax Authority [Axis] Number of businesses acquired Number of Businesses Acquired Restricted Cash Restricted Assets Disclosure [Text Block] Other assets Increase (Decrease) in Other Operating Assets Total LLC Interests outstanding (in shares) Minority Interest Total Number Of Interests The total number of shares of the subsidiary. Hedging Designation [Axis] Hedging Designation [Axis] Auditor Location Auditor Location Class D Common Stock Common Class D [Member] Classification of common stock that has different rights than provided to other classes of common stock, representing interest in a corporation. Entity Filer Category Entity Filer Category Proceeds from issuance of Class A common stock in follow-on offering, net of underwriting discounts Proceeds from Issuance of Common Stock Basic (in shares) Weighted average shares of Class A and Class B common stock outstanding - Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Federal Current Federal Tax Expense (Benefit) U.S. UNITED STATES Schedule of Unrecognized Compensation Expense Share-Based Payment Arrangement, Nonvested Award, Cost [Table Text Block] TWJ Tradeweb Japan Kk [Member] Tradeweb Japan K.K. (TWJ) is a security house regulated by the Japanese Financial Services Agency and the Japan Securities Dealers Association. Accounts payable, accrued expenses and other liabilities Accounts Payable, Accrued Expenses and Other Liabilities Related Parties Accounts Payable, Accrued Expenses and Other Liabilities Related Parties Compensation expense Options compensation expense Total stock-based compensation expense Share-Based Payment Arrangement, Expense Non-cash investing and financing activities: Noncash Investing and Financing Items [Abstract] Commitments and contingencies (Note 17) Commitments and Contingencies Security Exchange Name Security Exchange Name Options outstanding at beginning of period (in dollars per share) Options outstanding at end of period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Licenses License [Member] Gross notional amount Derivative, Notional Amount Preferred stock, $0.00001 par value; 250,000,000 shares authorized; none issued or outstanding Preferred Stock, Value, Issued Letters of credit outstanding Letters of Credit Outstanding, Amount Furniture, Equipment, Purchased Software and Leasehold Improvements Property, Plant and Equipment [Line Items] Total revenue Total revenue Revenue from Contract with Customer, Excluding Assessed Tax Activities related to the follow-on offering and other exchanges of LLC Interests, net of offering costs and cancellations (in shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Refinitiv market data fees Market Data Revenue [Member] Market data revenue earned from the sale of market data to Refinitiv, which redistributes the data. Includes real-time market data fees and historical data sets. Voting power percentage Voting power percentage Voting power percentage. Cover [Abstract] Leases Lessee, Leases [Policy Text Block] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Equity-settled PRSUs PRSUs Equity Settled Performance Based Restricted Stock Units [Member] Equity Settled Performance Based Restricted Stock Units [Member] Entity Voluntary Filers Entity Voluntary Filers Impairment of goodwill Goodwill, Impairment Loss Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Stock-Based Compensation Plans Share-Based Payment Arrangement [Text Block] Accounts receivable, allowance for credit losses Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss Tax receivable agreement liability Tax Receivable Agreement Liability The carrying amount as on the balance sheet date of tax receivable agreement liability. 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Diluted (in dollars per share) Earnings per share - Diluted (in dollars per share) Earnings Per Share, Diluted Intangible assets, net of accumulated amortization Intangible Assets, Net (Excluding Goodwill) Sale of Stock [Domain] Sale of Stock [Domain] Achievement of certain performance targets Share-Based Payment Arrangement, Tranche Two [Member] Stock split ratio, common stock Stockholders' Equity Note, Stock Split, Conversion Ratio Maximum contractual term Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Offering costs from issuance of Class A common stock in follow-on offering Offering costs incurred Payments of Stock Issuance Costs Ownership interest Number of LLC Interests held by Tradeweb Markets Inc. Noncontrolling Interest, Ownership Percentage by Parent Schedule of Class of Common Stock Par Value, Votes and Economic Rights Schedule of Stock by Class [Table Text Block] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] 2024 Lessee, Operating Lease, Liability, to be Paid, Year Two Gross unrecognized tax benefits as of January 1, 2022 Gross unrecognized tax benefits as of December 31, 2022 Unrecognized Tax Benefits Total deferred tax assets, net Deferred Tax Assets, Net of Valuation Allowance Software development costs capitalized Capitalized Computer Software, Additions Share Repurchase Program [Axis] Share Repurchase Program [Axis] Interest payable Income Tax Examination, Interest Accrued Adjustment in accounts receivable Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accounts Receivable Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accounts Receivable Less: Distributed and undistributed earnings allocated to unvested RSUs and unsettled vested PRSUs Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Commitment fee, percentage Line of Credit Facility, Commitment Fee Percentage Schedule of Derivative Values Schedule of Derivative Instruments [Table Text Block] Schedule of Maturity of Lease Liabilities and Future Minimum Lease Payments Lessee, Operating Lease, Liability, Maturity [Table Text Block] Entity Address, Address Line One Entity Address, Address Line One Income Tax Authority [Domain] Income Tax Authority [Domain] Receivable from/payable to brokers and dealers and clearing organizations, net Increase (Decrease) in Receivable from Broker-Dealer and Clearing Organization Stock-based compensation expense capitalized to software development costs Share-Based Payment Arrangement, Amount Capitalized Deferred revenue Deferred revenue balance - beginning of period Deferred revenue balance - end of period Contract with Customer, Liability Regulatory Capital Requirement Regulatory Capital Requirement Amount of regulatory capital required to be maintained for each entity under applicable regulations. Over-Allotment Option Over-Allotment Option [Member] Product and Service [Axis] Product and Service [Axis] Payable to brokers and dealers and clearing organizations Payable to brokers and dealers and clearing organizations Broker-Dealer, Payable to Other Broker-Dealer and Clearing Organization Number of claims dismissed Loss Contingency, Claims Dismissed, Number Class of Stock [Domain] Class of Stock [Domain] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Rate change Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent Subsidiary, Sale of Stock [Line Items] Subsidiary, Sale of Stock [Line Items] Tradename Trade Names [Member] Components of Software Development Costs Schedule Of Capitalized Computer Software [Table Text Block] Schedule Of Capitalized Computer Software Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] TWM LLC T W M L L C [Member] T W M L L C Subsequent Event [Table] Subsequent Event [Table] Schedule of Affiliates were Included in the Consolidated Statements of Income Schedule Of Related Party Transactions Affiliates [Table Text Block] Schedule Of Related Party Transactions Affiliates. Vested in period (in shares) Vests (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Weighted average unvested RSUs and unsettled vested PRSUs that were considered participating securities (in shares) Participating Securities, Distributed and Undistributed Earnings (Loss), Shares Participating Securities, Distributed and Undistributed Earnings (Loss), Shares Entity Tax Identification Number Entity Tax Identification Number Number of shares authorized (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized TESBV Tradeweb Execution Services B.V. [Member] Tradeweb Execution Services B.V. 2021 Share Repurchase Program 2021 Share Repurchase Program [Member] 2021 Share Repurchase Program Employee compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits Schedule of Breakdown of Revenues Between Fixed and Variable Revenues Disaggregation of Revenue [Table Text Block] Total deferred tax liabilities Deferred Tax Liabilities, Gross Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Underlying Asset Class [Domain] Underlying Asset Class [Domain] Stock-based compensation expense under the Option Plan APIC, Share-Based Payment Arrangement, Option, Increase for Cost Recognition Consolidated Entities [Domain] Consolidated Entities [Domain] Number of shares withheld (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Schedule of the Impact on Equity Due to Changes in the Company’s Ownership Interest in Noncontrolling Interest Schedule Of Impact On Equity Due To Changes In The Company’s Ownership Interest In Noncontrolling Interest [Table Text Block] Tabular disclosure of impact on equity due to changes in the Company’s ownership interest in noncontrolling interest. Other Other fees Financial Service, Other [Member] Reconciliation of the Statutory Tax Rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Net increase (decrease) in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Market Data Market Data Client Sector [Member] The market data client sector. 2027 2027 Finite-Lived Intangible Asset, Expected Amortization, Year Five Entity Central Index Key Entity Central Index Key Estimated annual future amortization for existing intangibles assets Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Measurement Frequency [Axis] Measurement Frequency [Axis] Weighted Average Grant-Date Fair Value 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] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Payroll taxes paid for stock-based compensation Share-based payment arrangement, decrease for tax withholding obligation Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Audit Information [Abstract] Audit Information [Abstract] Entity [Domain] Entity [Domain] Software development costs, net of accumulated amortization Software development costs, net of accumulated amortization Capitalized Computer Software, Net Net transfers (to) from non-controlling interests Transfers From (To) Noncontrolling Interests Amount of net transfers from (to) non controlling interest. City Area Code City Area Code Assets Assets [Abstract] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Institutional Institutional Client Sector [Member] The institutional client sector. Capitalized software development costs Payments for Software Statement of Stockholders' Equity [Abstract] Sale of Stock [Axis] Sale of Stock [Axis] Dividends Payments of Ordinary Dividends Other - See Note 14 Noncash Financing Activities, Other Noncash Financing Activities, Other Receivable from brokers and dealers and clearing organizations Receivable from brokers and dealers and clearing organizations Receivable from Broker-Dealer and Clearing Organization Expired (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Expired, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options Expired, Weighted Average Grant Date Fair Value Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Number of remaining shares available to repurchase (in shares) Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased Net proceeds Proceeds from Issuance Initial Public Offering Cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract] Total liabilities measured at fair value Financial Liabilities Fair Value Disclosure Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Retail Retail Client Sector [Member] The retail client sector. Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Public Investors Public Investors [Member] This member stands for public investors, collectively. Grants (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Variable Rate [Axis] Variable Rate [Axis] Amortization of pushdown accounting allocation Amortization Period Pushdown Accounting Adjustment Amortization period for pushdown accounting adjustments. Cash and restricted cash Restricted Cash and Cash Equivalents, Fair Value Disclosure Restricted Cash and Cash Equivalents, Fair Value Disclosure Purchases of furniture, equipment, software and leasehold improvements Payments to Acquire Property, Plant, and Equipment Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] 2023 2023 Finite-Lived Intangible Asset, Expected Amortization, Year One Tax liability Accrued Income Taxes Schedule of Basic and Diluted Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Foreign currency translation adjustments, tax benefit Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Software Development Costs Research, Development, and Computer Software Disclosure [Text Block] Tax Receivable Agreement - Interest Deferred Tax Assets Tax Receivable Agreement Deferred Tax Assets Tax Receivable Agreement Customer [Domain] Customer [Domain] Tax receivable agreement, payment term Tax Receivable Agreement, Term Tax Receivable Agreement, Term