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 DW SEF Dw Sef Llc [Member] DW SEF LLC (DW SEF) is a swap execution facility regulated by the Commodities Future Trading Commission. Fair value adjustments or credit losses Debt Securities, Available-for-Sale, Allowance for Credit Loss, Not Previously Recorded Related Party Transactions Related Party Transactions Disclosure [Text Block] Stock repurchase program, remaining authorized repurchase amount Share Repurchase Program, Remaining Authorized, Amount Estimated annual future amortization for existing intangibles assets Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Cover [Abstract] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five 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 Crypto Asset [Domain] Crypto Asset [Domain] Measurement Input, Discount Rate Measurement Input, Discount Rate [Member] Schedule of Maturity of Lease Liabilities and Future Minimum Lease Payments Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Wholesale Wholesale Client Sector [Member] The wholesale client sector. Schedule of Indefinite-Lived Intangible Assets [Table] Intangible Asset, Indefinite-Lived [Table] Income Tax Authority [Domain] Income Tax Jurisdiction [Domain] Trading Symbol Trading Symbol Loss on write-off of investment that was uncollectible Equity Securities, FV-NI, Realized Gain (Loss) Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Non-NEOs Non-NEOs [Member] Income tax benefit Income tax benefit Share-Based Payment Arrangement, Expense, Tax Benefit Amortization expense related to capitalized software development costs Non-Capitalized Computer Software Amortization Non-Capitalized Computer Software Amortization Dividends (in dollars per share) Cash dividend declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Distributions to non-controlling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Crypto Asset [Axis] Crypto Asset [Axis] 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. Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Accounts receivable Increase (Decrease) in Accounts Receivable 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 Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Organization Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Fair Value of Financial Instruments and Other Assets Fair Value Disclosures [Text Block] Proceeds from stock-based compensation exercises Proceeds from Stock Options Exercised Award Timing Disclosures [Line Items] Number of votes per common stock Number Of Votes Per Common Stock Number Of Votes Per Common Stock Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] U.S. UNITED STATES Exercised (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 Leases [Abstract] Accrued compensation Employee-related Liabilities Cost Finite-Lived Intangible Assets, Gross Reconciliation of the statutory tax rate Effective Income Tax Rate Reconciliation, Percent [Abstract] Excess Financial Resources Futures Commission Merchant, Commodity Exchange Act, Excess Net Capital Tax Receivable Agreement adjustment Effective Income Tax Rate Reconciliation, Other Reconciling Items, Percent Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Other - See Note 14 Other - See Note 14 Stockholders' Equity, Other Establishment of liabilities under tax receivable agreement Liabilities Assumed Award Timing Method Award Timing Method [Text Block] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Non-Controlling Interests Noncontrolling Interest [Line Items] Measurement Frequency [Axis] Measurement Frequency [Axis] Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Conversion ratio Common Stock Conversion Ratio Common Stock Conversion Ratio Insider Trading Policies and Procedures [Line Items] Use of Estimates Use of Estimates, Policy [Policy Text Block] Refinitiv Direct Owner Refinitiv Direct Owner [Member] Refinitiv Direct Owner Adjustment to Compensation, Amount Adjustment to Compensation Amount Compensation Amount Outstanding Recovery Compensation Amount Cost Basis Crypto Asset, Cost Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Entity Small Business Entity Small Business Company Selected Measure Amount Company Selected Measure Amount Tabular List, Table Tabular List [Table Text Block] LLC Interests Limited Liability Company Units [Member] Limited Liability Company Units Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Maximum performance modifier, percent Share-based Compensation Arrangement by Share-based Payment Award, Maximum Performance Modifier Share-based Compensation Arrangement by Share-based Payment Award, Maximum Performance Modifier Antidilutive shares (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Passage of time Share-Based Payment Arrangement, Tranche One [Member] Class C Common Stock, par value $0.00001 per share Class C common stock Common Class C [Member] Credit Facility [Domain] Credit Facility [Domain] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] 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 Goodwill Balance at beginning of period Balance at end of period Goodwill Accounts receivable, allowance for credit losses Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss Payroll taxes paid for stock-based compensation Payment, Tax Withholding, Share-Based Payment Arrangement Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Share repurchase program, amount authorized Share Repurchase Program, Authorized, Amount Penalties due Line Of Credit Facility, Penalties Due Line Of Credit Facility, Penalties Due RSUs and RSAs Restricted Stock Units and Restricted Stock [Member] Restricted Stock Units and Restricted Stock Entity Information [Line Items] Entity Information [Line Items] Options Share-Based Payment Arrangement, Option [Member] Foreign currency forward contracts – Gross notional amount Foreign Exchange Forward [Member] Depreciation expense Depreciation 2025 Lessee, Operating Lease, Liability, to be Paid, Year One Licenses – Refinitiv Transaction License [Member] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Comprehensive income attributable to Tradeweb Markets Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Other Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Tax Receivable Agreement Tax Receivable Agreement Liability Disclosure [Text Block] The entire disclosure of tax receivable agreement liability. Award Type [Axis] Award Type [Axis] 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] 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 Schedule of Canton Coin Crypto Asset, Holding [Table Text Block] Furniture, equipment, purchased software and leasehold improvements, net of accumulated depreciation and amortization Property, Plant and Equipment, Net ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Total liabilities Liabilities President President [Member] Non-controlling interests Equity, Attributable to Noncontrolling Interest Long-lived assets Long-Lived Assets Deposits with Clearing Organizations Deposits With Clearing Organizations [Policy Text Block] Disclosure of accounting policy for deposits with clearing organizations. Broker-Dealer [Abstract] Number of reporting units Number of Reporting Units Common stock, par value (in dollars per share) Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Translation of Foreign Currency and Foreign Currency Forward Contracts Foreign Currency Transactions and Translations Policy [Policy Text Block] Revolving Credit Facility Revolving Credit Facility [Member] Expiration Date Trading Arrangement Expiration Date Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Equity Compensation Effective Income Tax Rate Reconciliation, Equity Compensation, Percent Effective Income Tax Rate Reconciliation, Equity Compensation, Percent Total Shareholder Return Amount Total Shareholder Return Amount Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Net operating losses Deferred Tax Assets, Operating Loss Carryforwards Subsequent Event [Line Items] Subsequent Event [Line Items] Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period 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. Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Awarded During 2023 and 2024 Awarded During 2023 and 2024 [Member] Awarded During 2023 and 2024 Other assets Other assets Other Assets Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Diluted (in shares) Weighted average shares of Class A and Class B common stock outstanding - Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing [Axis] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Total stockholders’ equity attributable to Tradeweb Markets Inc. Equity, Attributable to Parent Deferred tax assets, gross Deferred Tax Assets, Gross Crypto Asset, Holding [Table] Crypto Asset, Holding [Table] Other assets – Memberships in clearing organizations Receivables from Clearing Organizations Foreign currency call option Foreign Exchange Option [Member] 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. Schedule of Goodwill Schedule of Goodwill [Table Text Block] Letters of credit outstanding Letters of Credit Outstanding, Amount Number of shares authorized (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Schedule of Fair Value Measurements Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Transaction costs Business Combination, Acquisition Related Costs All Executive Categories All Executive Categories [Member] Business acquisition depreciation and amortization Business Combination, Pro Forma Information, Depreciation And Amortization Of Acquired Assets Since Acquisition Date, Actual Business Combination, Pro Forma Information, Depreciation And Amortization Of Acquired Assets Since Acquisition Date, Actual Additional dilutive shares (in shares) Dilutive effect (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements 2026 2026 Finite-Lived Intangible Asset, Expected Amortization, Year Two Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Award, options, outstanding, weighted average remaining contractual term Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Goodwill recognized expected to be tax deductible Business Acquisition, Goodwill, Expected Tax Deductible Amount Assets Assets [Abstract] Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax Document Type Document Type Commitment fee, percentage Line of Credit Facility, Commitment Fee Percentage Derivative Contract [Domain] Derivative Contract [Domain] Software Development Costs Internal Use Software, Policy [Policy Text Block] Schedule of Information Regarding Revenue from External Customers by Client Sector Schedule of Segment Reporting Information, by Segment [Table Text Block] Derivative Liability, Statement of Financial Position [Extensible Enumeration] Derivative Liability, Statement of Financial Position [Extensible Enumeration] Excess Regulatory Capital Excess Regulatory Capital Amount by which the entity's regulatory capital (as defined) exceeds the requirement. Principal amount Debt Securities, Available-for-Sale, Amortized Cost 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. Schedule of Recognized Revenue and Remaining Deferred Revenue Balance Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Restricted Cash Restricted Assets Disclosure [Text Block] Schedule of Estimated Annual Future Amortization for Existing Intangible Assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Subsequent Event [Table] Subsequent Event [Table] Maximum Maximum [Member] Restricted Cash Equivalents [Abstract] Restricted Cash Equivalents [Abstract] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Performance period Share-Based Compensation Arrangement by Share-Based Payment Award, Performance Period Share-Based Compensation Arrangement by Share-Based Payment Award, Performance Period Net Carrying Amount Finite-Lived Intangible Assets, Net Expired (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Statistical Measurement [Axis] Statistical Measurement [Axis] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Income before taxes Income before taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Retirement notice, term Retirement Notice, Term Retirement Notice, Term Grantee Status [Domain] Grantee Status [Domain] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Name Outstanding Recovery, Individual Name Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Impairment of goodwill Goodwill, Impairment Loss 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] Total purchase consideration - cash paid and stock issued Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net Title of Individual [Axis] Title and Position [Axis] Award Timing Predetermined Award Timing Predetermined [Flag] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Change in Contract with Customer Change In Contract with Customer, Liability [Roll Forward] Change In Contract with Customer, Liability Customer relationships Customer Relationships [Member] Diluted (in dollars per share) Earnings per share - Diluted (in dollars per share) Earnings Per Share, Diluted General and administrative Other General and Administrative Expense Counterparty Name [Domain] Counterparty Name [Domain] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] State and local State and Local Jurisdiction [Member] Schedule of Equity-Settled PRSUs Issued Schedule of Nonvested Performance-Based Units Activity [Table Text Block] Total current tax expense Current Income Tax Expense (Benefit) Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Ownership [Axis] Ownership [Axis] Vesting percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Foreign currency transaction loss, before tax Gain (Loss), Foreign Currency Transaction, before Tax Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Customer [Axis] Customer [Axis] Less: Distributed and undistributed earnings allocated to participating securities Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Total realized and unrealized gains included in other income (loss), net Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Fair value of vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Realized and unrealized gains (losses) on foreign currency forward contracts Foreign currency forward contracts not designated in accounting hedge relationship – General and administrative (expenses)/income Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Provision for income taxes Total provision for income taxes Income Tax Expense (Benefit) Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Gross notional amount Derivative, Notional Amount Receivable and due from affiliates – Foreign exchange derivative contracts Derivative Asset ICDLC Institutional Cash Distributors, LLC [Member] Institutional Cash Distributors, LLC Weighted-average recognition period (in years) Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Total revenue Total revenue Revenue from Contract with Customer, Excluding Assessed Tax Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Income Tax Authority [Axis] Income Tax Jurisdiction [Axis] Business Acquisition [Line Items] Business Acquisition [Line Items] All Adjustments to Compensation All Adjustments to Compensation [Member] Additional paid-in capital Additional Paid in Capital Noncontrolling Interest [Table] Noncontrolling Interest [Table] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Legal Entity [Axis] Legal Entity [Axis] Nonrecurring Adjustment [Axis] Nonrecurring Adjustment [Axis] Liquid Financial Assets Liquid Financial Assets Liquid financial assets calculated under the Commodity Exchange Act. PSUs Phantom Share Units (PSUs) [Member] 2022 Share Repurchase Program 2022 Share Repurchase Program [Member] 2022 Share Repurchase Program Restricted cash Restricted cash Restricted Cash Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Entity Address, State or Province Entity Address, State or Province Deposits with clearing organizations Increase (Decrease) in Deposit Assets Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Vesting [Domain] Vesting [Domain] Weighted-average grant-date fair value (in dollars per share) 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 Liabilities and Equity Liabilities and Equity [Abstract] Cash paid for foreign currency call option, net of sale proceeds Payments for Derivative Instrument, Investing Activities Risks and Uncertainties [Abstract] Risks and Uncertainties [Abstract] 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. Restatement Determination Date Restatement Determination Date Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Accumulated Amortization Capitalized Computer Software, Accumulated Amortization One Month Secured Overnight Financing Rate One Month Secured Overnight Financing Rate [Member] One Month Secured Overnight Financing Rate Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Withholding taxes payable relating to stock-based compensation settlements included in accrued compensation Noncash Financing Activities, Taxes Payable Relating to Stock-based Compensation Settlements Noncash Financing Activities, Taxes Payable Relating to Stock-based Compensation Settlements 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 Lease right-of-use assets Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [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 Tradeweb Markets Inc Tradeweb Markets Inc [Member] Tradeweb Markets Inc., the reporting entity. Earnings Per Share Earnings Per Share [Text Block] Subsequent Event Subsequent Event [Member] Schedule of Significant Assumptions Used To Estimate The Fair Value of PSUs Schedule of Share-Based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block] Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Income Tax Income Tax, Policy [Policy Text Block] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Segments [Domain] Segments [Domain] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Unrecognized Tax Benefits [Roll Forward] PEO PEO [Member] Name Trading Arrangement, Individual Name Weighted Average Grant-Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Entity Public Float Entity Public Float Proceeds from unwinding of out-of-the-money derivative Proceeds from Derivative Instrument, Investing Activities TDIFC TDIFC [Member] TDIFC Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Dividends payable Dividends Payable Subscription fees Subscription Fee Revenue [Member] Subscription fee revenue from granting access to institutional investors to the entity's electronic marketplaces. Dividends Payments of Ordinary Dividends Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Cash equivalents – Money market funds and other highly liquid investments Cash and Cash Equivalents, Fair Value Disclosure Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Local Phone Number Local Phone Number Revenues Disaggregation of Revenue [Abstract] Valuation Allowance Deferred Tax Assets, Valuation Allowance Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Convertible Notes Payable Convertible Notes Payable [Member] Tradeweb Markets LLC TradeWeb Markets Llc [Member] Tradeweb Markets LLC. Secured Overnight Financing Rate (SOFR) Secured Overnight Financing Rate (SOFR) [Member] PEO Total Compensation Amount PEO Total Compensation Amount Occupancy Occupancy, Net Receivable from brokers and dealers and clearing organizations Receivable from brokers and dealers and clearing organizations Receivable from Broker-Dealer and Clearing Organization Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Income Statement Location [Axis] Statement of Income Location, Balance [Axis] Reportable Segment Reportable Segment [Member] Reportable Segment Common Stock Common Stock [Member] Minimum performance modifier, percent Share-based Compensation Arrangement by Share-based Payment Award, Minimum Performance Modifier Share-based Compensation Arrangement by Share-based Payment Award, Minimum Performance Modifier Stock split ratio, common stock Stockholders' Equity Note, Stock Split, Conversion Ratio Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Share-based payment arrangement, accelerated cost Share-Based Payment Arrangement, Accelerated Cost Segment Reporting [Abstract] Segment Reporting [Abstract] Number of shares withheld (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Intangible Assets Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] Entity Central Index Key Entity Central Index Key Other segment items Segment Reporting, Other Segment Item, Amount General and Administrative Expense General and Administrative Expense [Member] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Stockholders' Equity Equity [Text Block] Accounts payable, accrued expenses and other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Business Segment and Geographic Information Segment Reporting Disclosure [Text Block] Operating lease expected initial lease term Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract Total Fair Value Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Stock-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Restricted Stock Restricted Stock [Member] Professional fees Professional fees Professional Fees Class B Common Stock, par value $0.00001 per share Class B common stock Common Class B [Member] Title Trading Arrangement, Individual Title 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. Consolidated Entities [Axis] Consolidated Entities [Axis] Gross unrecognized tax benefits as of January 1, 2024 Gross unrecognized tax benefits as of December 31, 2024 Unrecognized Tax Benefits City Area Code City Area Code Auditor Location Auditor Location Rate change Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Shares issued to underwriters (in shares) Stockholders' Equity Note [Abstract] Broker-dealer, self-funded remaining difference between the fail to deliver and fail to receive Broker-Dealer, Self-Funded Remaining Difference Between Fail To Deliver And Fail To Receive Broker-Dealer, Self-Funded Remaining Difference Between Fail To Deliver And Fail To Receive Fair value, measurement input Equity Securities without Readily Determinable Fair Value, Measurement Input Equity Securities without Readily Determinable Fair Value, Measurement Input New billings Contract With Customer Liability, New Billings Amount of deferred revenue recognized for new billing arising during the current reporting period. Share repurchases pursuant to share repurchase programs Payments for Repurchase of Common Stock Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] 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] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Earnings per share attributable to Tradeweb Markets Inc. Class A and B common stockholders: Earnings Per Share [Abstract] Earnings Per Share [Abstract] Retained earnings Retained Earnings (Accumulated Deficit) Class of Stock [Domain] Class of Stock [Domain] Target performance modifier, percent Share-based Compensation Arrangement by Share-based Payment Award, Target Performance Modifier Share-based Compensation Arrangement by Share-based Payment Award, Target Performance Modifier Related Party Transactions Related Party Transaction [Line Items] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Equity Awards Adjustments Equity Awards Adjustments [Member] Lease liabilities Operating lease liabilities Lease liability Operating Lease, Liability Class D Common Stock, par value $0.00001 per share 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. Underlying Securities Award Underlying Securities Amount Digital Assets Digital Assets [Member] Digital Assets Receivable from/payable to brokers and dealers and clearing organizations, net Increase (Decrease) in Receivable from Broker-Dealer and Clearing Organization 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. Amendment Flag Amendment Flag Accounts receivable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Subsequent Events [Abstract] Subsequent Events [Abstract] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Schedule of Intangible Assets Which Have an Indefinite Useful Life Schedule of Indefinite-Lived Intangible Assets [Table Text Block] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Entity Address, Postal Zip Code Entity Address, Postal Zip Code LSEG market data fees LSEG 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. Tax receivable agreement liability Tax Receivable Agreement Liability The carrying amount as on the balance sheet date of tax receivable agreement liability. Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Canton coins Canton Coins [Member] Canton Coins Grantee Status [Axis] Grantee Status [Axis] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Auditor Name Auditor Name Non-employees Share-Based Payment Arrangement, Nonemployee [Member] Forfeited (in dollars per share) Forfeited (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value 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 Current: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Equity Investments Without Readily Determinable Fair Values Equity Securities without Readily Determinable Fair Value [Policy Text Block] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Useful life Property, Plant and Equipment, Useful Life Options Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Non-Controlling Interests Noncontrolling Interest Disclosure [Text Block] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Cash acquired from acquisition Cash Acquired from Acquisition Receivable and due from affiliates/payable and due to affiliates, net Increase (Decrease) Due from Affiliates Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table] Consolidation, Less-than-Wholly-Owned Subsidiary, Parent Ownership Interest, Effect of Change [Table] Net income attributable to outstanding shares of Class A and Class B common stock - Basic Net Income (Loss) Available to Common Stockholders, Basic Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Number of claims dismissed Loss Contingency, Claims Dismissed, Number Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Total assets Assets Other assets – Digital Assets – Canton Coins Fair Value Crypto Asset, Fair Value Purchases of furniture, equipment, software and leasehold improvements Payments to Acquire Property, Plant, and Equipment Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Commitments and contingencies (Note 17) Commitments and Contingencies Stock-Based Compensation Share-Based Payment Arrangement [Policy Text Block] Schedule of Reconciliation of the Statutory Tax Rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Termination Date Trading Arrangement Termination Date Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Fair Value of Financial Instruments Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] 2026 Lessee, Operating Lease, Liability, to be Paid, Year Two Regulatory Capital Requirement Regulatory Capital Requirement Amount of regulatory capital required to be maintained for each entity under applicable regulations. Payable and due to affiliates Other Liabilities Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Schedule of Final Purchase Price Allocations Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Noncontrolling Interest [Abstract] Noncontrolling Interest [Abstract] Schedule of Components of Software Development Costs Schedule Of Capitalized Computer Software [Table Text Block] Schedule Of Capitalized Computer Software Net income attributable to Tradeweb Markets Inc. Net income attributable to Tradeweb Markets Inc. Net Income (Loss) Attributable to Parent Trading Arrangement: Trading Arrangement [Axis] Schedule of Financial Instruments Not Measured at Fair Value Fair Value, by Balance Sheet Grouping [Table Text Block] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] TWM LLC T W M L L C [Member] T W M L L C Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] 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 TESBV Tradeweb Execution Services B.V. [Member] Tradeweb Execution Services B.V. Entity File Number Entity File Number Consolidated Entities [Domain] Consolidated Entities [Domain] Non- Controlling Interests Noncontrolling Interest [Member] Income Statement [Abstract] Income Statement [Abstract] Entity Address, Address Line One Entity Address, Address Line One Federal Current Federal Tax Expense (Benefit) Lease liabilities Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Lease Obligation Weighted average shares outstanding: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Initial term of lease Lessee, Operating Lease, Term of Contract Name Forgone Recovery, Individual Name Award Date [Domain] Award Date [Domain] Weighted average remaining lease term (years) Operating Lease, Weighted Average Remaining Lease Term Contract with Customer, Basis of Pricing [Domain] Contract with Customer, Basis of Pricing [Domain] Other (income) loss, net Other Noncash Income (Expense) Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Deferred tax liabilities Components of Deferred Tax Liabilities [Abstract] Deferred revenue Increase (Decrease) in Deferred Revenue Market Data Market Data Client Sector [Member] The market data client sector. Non-controlling interest Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Percent Decrease in prior year tax positions Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Schedule of Class of Common Stock Par Value, Votes and Economic Rights Schedule of Stock by Class [Table Text Block] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Adjustment to Compensation: Adjustment to Compensation [Axis] Less: Net income attributable to non-controlling interests Less: Net income attributable to non-controlling interests Net Income (Loss) Attributable to Noncontrolling Interest Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Additions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Retail Retail Client Sector [Member] The retail client sector. Public Investors Public Investors [Member] This member stands for public investors, collectively. Related Party [Axis] Related and Nonrelated Parties [Axis] 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 Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Lease right-of-use assets Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Right-Of-Use Asset Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Right-Of-Use Asset Acquired tax positions Unrecognized Tax Benefits, Increase Resulting from Acquisition Software development costs, net of accumulated amortization Net Carrying Amount Capitalized Computer Software, Net Total equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Enrico Bruni [Member] Enrico Bruni Cash and restricted cash Restricted Cash and Cash Equivalents, Fair Value Disclosure Restricted Cash and Cash Equivalents, Fair Value Disclosure Equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Penalties to be paid Line Of Credit Facility, Termination Penalties Line Of Credit Facility, Termination Penalties Required Financial Resources Futures Commission Merchant, Commodity Exchange Act, Required Net Capital Name Awards Close in Time to MNPI Disclosures, Individual Name Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Number of businesses acquired Number of Businesses Acquired Entity Filer Category Entity Filer Category Commitments and Contingencies Loss Contingencies [Line Items] 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] Fed Funds Effective Rate Fed Funds Effective Rate Overnight Index Swap Rate [Member] 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. Goodwill recognized in connection with acquisitions Goodwill, Acquired During Period Statistical Measurement [Domain] Statistical Measurement [Domain] Schedule of Activity Related to the Company's Leases Lease, Cost [Table Text Block] Investment in Available for Sale Debt Securities Debt Securities [Member] Fixed Fixed-Price Contract [Member] ICDLT Institutional Cash Distributors Limited [Member] Institutional Cash Distributors Limited Business Segment and Geographic Information Segment Reporting Information [Line Items] Unsettled share repurchases included in other liabilities Unsettled Share Repurchases Included In Other Liabilities Unsettled Share Repurchases Included In Other Liabilities All Trading Arrangements All Trading Arrangements [Member] 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 Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [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. Schedule of Basic and Diluted Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Maximum contractual term Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Derivative [Line Items] Derivative [Line Items] Income taxes paid, net of (refunds) Income Taxes Paid, Net Forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures, Weighted Average Grant Date Fair Value EURIBOR EURIBOR [Member] EURIBOR Class A Common Stock, par value $0.00001 per share Class A common stock Common Class A [Member] Debt instrument floor rate Debt Instrument Floor Rate The Percentage of floor rate under debt instrument. Activities related to exchanges of LLC Interests (in shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Pay vs Performance Disclosure [Line Items] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Employees Share-Based Payment Arrangement, Employee [Member] Derivative [Table] Derivative [Table] Deferred: Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Other Performance Measure, Amount Other Performance Measure, Amount 2027 2027 Finite-Lived Intangible Asset, Expected Amortization, Year Three Schedule of RSU Activity Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] Leases Lessee, Operating Leases [Text Block] Common stock, shares outstanding (in shares) Beginning balance ( in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Operating lease expense included as a component of occupancy expense on the accompanying consolidated statements of income Operating Lease, Cost Crypto Asset, Holding [Line Items] Crypto Asset, Holding [Line Items] Securities sold under agreements to repurchase Increase (Decrease) in Financial Instruments Sold, Not yet Purchased Increase/(decrease) in Tradeweb Markets Inc.’s additional paid-in capital as a result of ownership changes in TWM LLC Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests ICDEU ICD Europe [Member] ICD Europe 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. PRSUs Performance Shares Settled With Equity [Member] Performance Shares Settled With Equity Nonrecurring Adjustment [Domain] Nonrecurring Adjustment [Domain] Entity Tax Identification Number Entity Tax Identification Number Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Banking Regulation, Regulatory Capital Requirement, Compliance [Table] Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Common stock repurchased (in shares) Treasury Stock, Shares, Acquired Increase in prior year tax positions Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Foreign Deferred Foreign Income Tax Expense (Benefit) Decrease in tax liability Tax Adjustments, Settlements, and Unusual Provisions Selling, General and Administrative Expenses Selling, General and Administrative Expenses [Member] Schedule of Derivative Values Schedule of Derivative Instruments [Table Text Block] ICD and R8Fin ICD And R8Fin [Member] ICD And R8Fin Equity Components [Axis] Equity Components [Axis] Quantity (canton coins) Crypto Asset, Number of Units Other assets – Investment in available for sale debt securities Debt Securities, Available-for-Sale Tradename Tradename – Refinitiv Transaction Trade Names [Member] Net income attributable to Tradeweb Markets Inc. Business Acquisition, Pro Forma Net Income (Loss) R8Fin Acquisition R8Fin [Member] R8Fin Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Stock-based compensation expense capitalized to software development costs Share-Based Payment Arrangement, Amount Capitalized Total expenses Costs and Expenses Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Options outstanding intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Equity interests issued and issuable Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Geographical [Axis] Geographical [Axis] Total net deferred tax asset (liability) Deferred Tax Assets, Net 2029 Lessee, Operating Lease, Liability, to be Paid, Year Five Interest income Investment Income, Interest and Dividend Award Date [Axis] Award Date [Axis] Deferred revenue acquired in connection with acquisitions Contract With Customer Liability, Deferred Revenue Acquired Contract With Customer Liability, Deferred Revenue Acquired Share repurchases pursuant to share repurchase programs Stock Repurchased During Period, Value Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Chief Executive Officer Chief Executive Officer [Member] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets 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 Number of share owned (in shares) Number Of Share Owned Number of share owned. Total unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount 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. Foreign Current Foreign Tax Expense (Benefit) Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-Lived Intangible Assets, Major Class Name [Domain] Professional Fees Professional Fees [Member] Professional Fees Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Product and Service [Domain] Product and Service [Domain] Vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Goodwill [Roll Forward] Goodwill [Roll Forward] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Unrealize gain relating to level 3 assets held Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Security Exchange Name Security Exchange Name Spread Debt Instrument, Basis Spread on Variable Rate Exercises (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Deferred tax asset as a result of transferable tax credit purchase Increase (Decrease) In Deferred Tax Assets Increase (Decrease) In Deferred Tax Assets Software Development Costs Research, Development, and Computer Software Disclosure [Text Block] PRSUs RSU and RSAs Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Payments on tax receivable agreement liability Payments on Tax Receivable Agreement, Liability Payments on Tax Receivable Agreement, Liability State and Local Current State and Local Tax Expense (Benefit) Employee compensation and benefits Employee compensation and benefits Labor and Related Expense 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. Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Fair Value, Nonrecurring Fair Value, Nonrecurring [Member] Dispositions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales YB Yieldbroker Yieldbroker Acquisition Yieldbroker [Member] Yieldbroker Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Common stock, shares issued (in shares) Common Stock, Shares, Issued Entity [Domain] Entity [Domain] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity 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. Tax Receivable Agreement Tax Receivable Agreement No definition available. 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 Payable and due to affiliates – Foreign exchange derivative contracts Derivative Liability Securities Sold Under Agreements to Repurchase Repurchase and Resale Agreements Policy [Policy Text Block] Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Common stock, shares authorized (in shares) Common Stock, Shares Authorized Cash paid for acquisitions, net of cash acquired Cash paid for acquisition, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Investments in Digital Assets - Canton Coins Platform Operator, Crypto Asset [Policy Text Block] Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Entity Voluntary Filers Entity Voluntary Filers Hedging Designation [Domain] Hedging Designation [Domain] Interest expense Interest Expense, Nonoperating Deferred tax expense Total deferred tax expense Deferred Income Tax Expense (Benefit) Schedule Of Unaudited Supplemental Pro Forma Financial Information Business Acquisition, Pro Forma Information [Table Text Block] Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Interest payable Income Tax Examination, Interest Accrued Ownership interest Number of LLC Interests held by Tradeweb Markets Inc. Subsidiary, Ownership Percentage, Parent Business Segment and Geographic Information Revenues from External Customers and Long-Lived Assets [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Penalties payable Income Tax Examination, Penalties Accrued Adjustments to non-controlling interests Minority Interest Increase Decrease From Adjustments Amount of increase (decrease) in noncontrolling interest from adjustments. Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Average price per share (in dollars per share) Shares Acquired, Average Cost Per Share Document Annual Report Document Annual Report 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. Threshold percentage of economic interest for conversion Threshold Percentage of Economic Interest For Conversion Threshold Percentage of Economic Interest For Conversion Vested (in shares) Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Risk-Free Interest Rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Indefinite-lived intangible assets Indefinite-Lived Intangible Assets (Excluding Goodwill) Amortization expense Amortization of Intangible Assets Investments in Available-for-Sale Debt Securities Debt Securities, Available-for-Sale, Premium on Purchased Options [Policy Text Block] Deferred revenue Deferred revenue balance - beginning of period Deferred revenue balance - end of period Contract with Customer, Liability Adjusted For Refinitiv Transaction Adjusted For Refinitiv Transaction [Member] Reflects a new basis of accounting resulting from the Refinitiv transaction. Deferred financing costs Payments of Financing Costs International Non-US [Member] Accounting Policies [Abstract] Accounting Policies [Abstract] Liabilities Liabilities [Abstract] Revenues Revenue: Revenues [Abstract] Fair Value Measurement Fair Value Measurement, Policy [Policy Text Block] Acquisitions Business Combination Disclosure [Text Block] Current Fiscal Year End Date Current Fiscal Year End Date Less imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount 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. PEO Name PEO Name Vesting [Axis] Vesting [Axis] Award Type [Domain] Award Type [Domain] Cash and cash equivalents Less: Cash acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Schedule of Unrecognized Compensation Expense Share-Based Payment Arrangement, Nonvested Award, Cost [Table Text Block] Deferred tax asset Deferred Income Tax Assets, Net Non-PEO NEO Non-PEO NEO [Member] Useful life of intangible assets Amortization Period Finite-Lived Intangible Asset, Useful Life Credit adjustment spread Debt Instrument, Credit Adjustment Spread Debt Instrument, Credit Adjustment Spread Additional Paid-In Capital Additional Paid-in Capital [Member] Class of Stock [Line Items] Class of Stock [Line Items] Deferred tax liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Class of Stock [Axis] Class of Stock [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Title of Individual [Domain] Title and Position [Domain] Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Research and Development [Abstract] Name Measure Name Entity Interactive Data Current Entity Interactive Data Current Regulatory Capital Requirements Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Number of operating segments Number of Operating Segments Deferred tax assets: Components of Deferred Tax Assets [Abstract] Furniture, Equipment, Purchased Software and Leasehold Improvements Furniture Equipment And Purchased Software [Member] Furniture, equipment and purchased software. Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] 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, Option, Nonvested, Weighted Average Exercise Price Total LLC Interests outstanding Minority Interest Total Ownership Percentage The total ownership interest on noncontrolling interest expressed as a percentage. Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Total deferred tax assets, net Deferred Tax Assets, Net of Valuation Allowance Other Stockholders Other Stockholders [Member] Other Stockholders Achievement of certain performance targets Share-Based Payment Arrangement, Tranche Two [Member] Equity Members' Equity [Abstract] Interest rate Debt Instrument, Interest Rate, Stated Percentage Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Net income attributable to outstanding shares of Class A and Class B common stock - Diluted Net Income (Loss) Available to Common Stockholders, Diluted Settlements Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Increase (decrease) in operating liabilities: Increase (Decrease) in Operating Liabilities [Abstract] Auditor Firm ID Auditor Firm ID Effective tax rate Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Deferred tax asset Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Operating income Operating Income (Loss) Accounts receivable, net of allowance for credit losses of $447 and $284 at December 31, 2024 and 2023, 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. Variable Rate [Domain] Variable Rate [Domain] Number of reportable segments Number of Reportable Segments Transferable tax credits Deferred ​Tax ​Assets, Transferable Tax Credits Deferred ​Tax ​Assets, Transferable Tax Credits Total liabilities and equity Liabilities and Equity Subsequent Events Subsequent Events [Text Block] Dividends Dividends Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Hedging Designation [Axis] Hedging Designation [Axis] ICD Acquisition ICD [Member] ICD Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table] Cancellation ratio Common Stock Cancellation Ratio Common Stock Cancellation Ratio Issuance, allocated to consideration transferred for the business combination Stock Issued During Period, Value, Pre-Acquisition Stock Issued During Period, Value, Pre-Acquisition Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Schedule of Outstanding RSUs Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Measurement Input Type [Axis] Measurement Input Type [Axis] Individual: Individual [Axis] Significant unobservable input Debt Securities, Available-for-Sale, Measurement Input 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 Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Forfeited (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Maturity (years) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Product and Service [Axis] Product and Service [Axis] Furniture, Equipment, Purchased Software and Leasehold Improvements Property, Plant and Equipment [Line Items] Statement [Line Items] Statement [Line Items] Measurement Input Type [Domain] Measurement Input Type [Domain] Schedule of Balances From Transactions with Affiliates Included in the Consolidated Statements Schedule of Related Party Transactions [Table Text Block] Schedule of Company’s Outstanding Shares of Common Stock Schedule of Stockholders Equity [Table Text Block] Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Corporates Corporate Client Sector [Member] Corporate Client Sector Expenses Operating Expenses [Abstract] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Net cash acquired Purchase consideration, net of cash acquired Business Combination, Consideration Transferred Operating income Business Combination, Pro Forma Information, Operating Income (Loss) Of Acquiree Since Acquisition Date, Actual Business Combination, Pro Forma Information, Operating Income (Loss) Of Acquiree Since Acquisition Date, Actual Software development costs Software Development [Member] Allowance for Credit Losses Credit Loss, Financial Instrument [Policy Text Block] Shares contributed by Refinitiv Owner (in shares) Stock Contributed During Period Acquiree Majority Owner Stock Contributed During Period Acquiree Majority Owner Schedule of Changes in Fair Value Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Other tax credits Deferred Tax Assets, Tax Credit Carryforwards, Other Technology and communications Communications and Information Technology Required Liquid Financial Assets Required Liquid Financial Assets Amount of liquid financial assets required to be maintained under the Commodity Exchange Act. Measurement Input, Perpetual Growth Rate Measurement Input, Perpetual Growth Rate [Member] Measurement Input, Perpetual Growth Rate Minimum Minimum [Member] Other Other fees Financial Service, Other [Member] Adoption Date Trading Arrangement Adoption Date Related Party Transactions [Abstract] Related Party Transactions [Abstract] Receivable and due from affiliates Other Receivables Other Operating Income (Expense) Other Operating Income (Expense) [Member] Foreign currency translation adjustments, tax benefit Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Credit loss expense (reversal) Accounts Receivable, Credit Loss Expense (Reversal) Software development costs capitalized Capitalized Computer Software, Additions Segments [Axis] Segments [Axis] Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Revenue Business Acquisition, Pro Forma Revenue Statutory U.S. federal income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Derivative Instrument [Axis] Derivative Instrument [Axis] Letter of credit issued Long-Term Debt, Gross Exercise Price Award Exercise Price Schedule of Components of Deferred Tax Assets (Liabilities) Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Deposits with clearing organizations Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits with Clearing Organizations Accrued compensation Increase (Decrease) in Employee Related Liabilities Arrangement Duration Trading Arrangement Duration Issuance, amortized into stock-based compensation expense Stock Issued During Period, Value, Post-Acquisition Stock Issued During Period, Value, Post-Acquisition Net operating loss carryforwards Operating Loss Carryforwards Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] United States Domestic Tax Jurisdiction [Member] Derivative Asset, Statement of Financial Position [Extensible Enumeration] Derivative Asset, Statement of Financial Position [Extensible Enumeration] 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. Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] 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. Revolving credit facility, term Debt Instrument, Term 2028 2028 Finite-Lived Intangible Asset, Expected Amortization, Year Four All Individuals All Individuals [Member] 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. Variable Rate [Axis] Variable Rate [Axis] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Entities [Table] Entities [Table] Other income (loss), net Other Nonoperating Income (Expense) Statement of Stockholders' Equity [Abstract] Intangible assets, net of accumulated amortization Intangible Assets, Net (Excluding Goodwill) Receivable from and Payable to Brokers and Dealers and Clearing Organizations Industry-Specific Policies, Broker-Dealer [Policy Text Block] Cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract] Refinitiv Refinitiv [Member] Refinitiv, formerly the Thomson Reuters Financial & Risk Business. Schedule of Financial Resources and Liquid Financial Resources Futures Commission Merchant, Minimum Financial Requirement [Table Text Block] Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract] Assets Assets, Fair Value Disclosure [Abstract] Issuance of common stock for business acquisitions Stock Issued Related Party [Domain] Related and Nonrelated Parties [Domain] Additional adjustment Debt Instrument, Adjustment In Addition To Credit Adjustment Spread Debt Instrument, Adjustment In Addition To Credit Adjustment Spread Deferred tax liability Deferred Income Tax Liabilities, Net Annualized Volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Share repurchases pursuant to the share repurchase programs (in shares) Stock Repurchased During Period, Shares Conversion of common stock (in shares) Conversion of Stock, Shares Converted Award requisite service period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period Other assets Increase (Decrease) in Other Operating Assets Intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Federal Deferred Federal Income Tax Expense (Benefit) Variable Variable Pricing [Member] Contract with customer in which amount of consideration is based on variable components such as transaction based fees. Share Repurchase Program [Domain] Share Repurchase Program [Domain] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Measure: Measure [Axis] Asset Class [Domain] Asset Class [Domain] Increase in current year tax positions Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Income Tax Disclosure [Table] Operating Loss Carryforwards [Table] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Issuance of common stock from equity incentive plans (in shares) Stock Issued During Period, Shares, New Issues Cost Capitalized Computer Software, Gross Entity Emerging Growth Company Entity Emerging Growth Company Indefinite-Lived Intangible Assets [Axis] Indefinite-Lived Intangible Assets [Axis] Total liabilities measured at fair value Liabilities, Fair Value Disclosure Financial Resources Futures Commission Merchant, Commodity Exchange Act, Adjusted Net Capital 2019 Omnibus Equity Incentive Plan Omnibus2019 Equity Incentive Plan [Member] Represents the information pertaining to omnibus 2019 equity incentive plan. Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Equity Component [Domain] Equity Component [Domain] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Bridge Loan Bridge Loan [Member] Securities sold under agreements to repurchase Securities Sold under Agreements to Repurchase 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 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. 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] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Entity Shell Company Entity Shell Company Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Statement [Table] Statement [Table] Effect of foreign currency exchange rate changes Contract With Customer, Liability, Foreign Currency Exchange Rate Contract With Customer, Liability, Foreign Currency Exchange Rate NFI Acquisition NFI Acquisition [Member] NFI Acquisition Accounts payable, accrued expenses and other liabilities Accounts Payable and Accrued Liabilities Measurement Frequency [Domain] Measurement Frequency [Domain] Counterparty [Axis] Counterparty Name [Axis] Significant Accounting Policies Significant Accounting Policies [Text Block] Net Income Per Share Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] (Increase) decrease in operating assets: Increase (Decrease) in Operating Assets [Abstract] 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] Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Quoted Prices in active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Foreign currency translation adjustments, with no tax benefit for each of the years ended December 31, 2024, 2023 and 2022 Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax ICD, r8fin, and Yieldbroker Acquisitions ICD, R8Fin, and Yieldbroker [Member] ICD, R8Fin, and Yieldbroker Employee compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Non-cash investing and financing activities: Noncash Investing and Financing Items [Abstract] Revenues Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Equity investment without readily determinable fair value Equity Securities without Readily Determinable Fair Value, Amount Future minimum lease payments for a lease signed but not yet commenced Unrecorded Unconditional Purchase Obligation Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Income Taxes Income Tax Disclosure [Text Block] Accordion feature Line of Credit Facility, Accordion Feature, Increase Limit Line of Credit Facility, Accordion Feature, Increase Limit 2028 Lessee, Operating Lease, Liability, to be Paid, Year Four Numerator: Net Income (Loss) Attributable to Parent [Abstract] Awarded During 2022 And Prior Awarded During 2022 And Prior [Member] Awarded During 2022 And Prior 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 Acquisitions and Other Acquisitions And Other [Member] Acquisitions And Other Total LLC Interests outstanding (in shares) Minority Interest Total Number Of Interests The total number of shares of the subsidiary. Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Weighted average borrowing rate Operating Lease, Weighted Average Discount Rate, Percent Total realized and unrealized gains (losses) included in other comprehensive income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Credit Facility [Axis] Credit Facility [Axis] Income Tax Disclosure [Line Items] Operating Loss Carryforwards [Line Items] Entity Registrant Name Entity Registrant Name All-cash acquisition Payments to Acquire Businesses, Gross Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] State and local Deferred State and Local Income Tax Expense (Benefit) Fair Value as of Grant Date Award Grant Date Fair Value Affiliated Entity Affiliated Entity [Member] Significant Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Geographical [Domain] Geographical [Domain] Schedule of Breakdown of Revenues Between Fixed and Variable Revenues Disaggregation of Revenue [Table Text Block] Issuance of common stock from equity incentive plans Stock Issued During Period, Value, New Issues Schedule of Total Stock-based Compensation Expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Pushdown Accounting Consolidation, Policy [Policy Text Block] Restatement Determination Date: Restatement Determination Date [Axis] Title of 12(b) Security Title of 12(b) Security Common stock Common Stock, Value, Issued Document Financial Statement Error Correction Document Financial Statement Error Correction [Flag] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Issuance of common stock for business acquisitions Fair market value Stock Issued During Period, Value, Acquisitions Regulatory Capital Regulatory Capital Regulatory capital as calculated for each entity under applicable regulations. Common stock shares issued by corporation (in shares) Issuance of common stock for business acquisitions (in shares) Stock Issued During Period, Shares, Acquisitions State and local income taxes, net of federal income tax benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Other Deferred Tax Assets, Other Intangible Assets Intangible assets that are subject to amortization Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Intangible assets with indefinite useful lives Indefinite-Lived Intangible Assets [Line Items] Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Preferred stock, $0.00001 par value; 250,000,000 shares authorized; none issued or outstanding Preferred Stock, Value, Issued Revenue recognized Contract With Customer, Liability, Revenue Recognized Including New Billings Contract With Customer, Liability, Revenue Recognized Including New Billings Total deferred tax liabilities Deferred Tax Liabilities, Gross Basic (in dollars per share) Earnings per share - Basic (in dollars per share) Earnings Per Share, Basic Cash paid for amounts included in the measurement of operating lease liability Operating Lease, Payments Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Investment in partnership Deferred Tax Assets, Investments Regulatory Capital Requirements Regulatory Capital Requirements [Text Block] The entire disclosure of capital requirements and required financial resources under applicable regulations. Total 2024 Business Combinations Twenty Twenty Four Business Acquisitions [Member] Twenty Twenty Four Business Acquisitions Ownership [Domain] Ownership [Domain] Furniture, equipment, software and leasehold improvement additions included in accounts payable Capital Expenditures Incurred but Not yet Paid Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Furniture, Equipment, Purchased Software and Leasehold Improvements Property, Plant and Equipment, Policy [Policy Text Block] Share Repurchase Program [Axis] Share Repurchase Program [Axis] 2025 2025 Finite-Lived Intangible Asset, Expected Amortization, Year One Granted (in shares) Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Increase/(decrease) in Tradeweb Markets Inc.’s additional paid-in capital as a result of ownership changes in TWM LLC Noncontrolling Interest, Increase from Subsidiary Equity Issuance Deferred revenue Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue Business Combinations Business Combinations Policy [Policy Text Block] Stock-Based Compensation Plans Share-Based Payment Arrangement [Text Block] Entity Address, City or Town Entity Address, City or Town Goodwill and Intangibles Deferred Tax Liabilities, Goodwill Leases Lessee, Leases [Policy Text Block] Schedule of Options Issued Share-Based Payment Arrangement, Option, Activity [Table Text Block] Intrinsic value of options exercised during the year Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value PRSU compensation expense Options compensation expense Total stock-based compensation expense Share-Based Payment Arrangement, Expense Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract] Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract] Consideration transferred, net of equity issued Business Combination, Consideration Transferred, Net Of Equity Issued Business Combination, Consideration Transferred, Net Of Equity Issued Grants (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Loss Contingencies [Table] Loss Contingencies [Table] Forfeited (in shares) Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Business Acquisition [Axis] Business Acquisition [Axis] Schedule of Intangible Assets That are Subject to Amortization Schedule of Finite-Lived Intangible Assets [Table Text Block] Credit Risk Allowance for Credit Losses [Text Block] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] 2021 Share Repurchase Program 2021 Share Repurchase Program [Member] 2021 Share Repurchase Program Foreign Foreign Tax Jurisdiction [Member] Liabilities Liabilities, Fair Value Disclosure [Abstract] Revenue Revenue from Contract with Customer [Text Block] Document Fiscal Year Focus Document Fiscal Year Focus Aggregate value of share repurchase Treasury Stock, Value, Acquired, Cost Method Content and data – Refinitiv Transaction Media Content [Member] Total assets measured at fair value Assets, Fair Value Disclosure 2029 2029 Finite-Lived Intangible Asset, Expected Amortization, Year Five Document Period End Date Document Period End Date 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. Equity investment impairment Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount Total future lease payments Lessee, Operating Lease, Liability, to be Paid 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 Asset Class [Axis] Asset Class [Axis] Expired (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period Insider Trading Arrangements [Line Items] Deposits with clearing organizations Deposits with clearing organizations Deposits with Clearing Organizations and Others, Securities 2027 Lessee, Operating Lease, Liability, to be Paid, Year Three Accounts payable, accrued expenses and other liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable Audit Information [Abstract] Audit Information [Abstract] Revenue recognized that was previously deferred Contract with Customer, Liability, Revenue Recognized Net transfers (to) from non-controlling interests Transfers From (To) Noncontrolling Interests Amount of net transfers from (to) non controlling interest. Document Transition Report Document Transition Report Institutional Institutional Client Sector [Member] The institutional client sector. Schedule of Components of Uncertain Tax Positions Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Operating income Business Acquisition, Pro Forma Operating Income (Loss) Business Acquisition, Pro Forma Operating Income (Loss) Customer [Domain] Customer [Domain] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Other - See Note 14 Noncash Financing Activities, Other Noncash Financing Activities, Other Entity Current Reporting Status Entity Current Reporting Status 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 Retained Earnings Retained Earnings [Member] Ownership percentage, continuing LLC Owners Number of LLC Interests held by non-controlling interests Subsidiary, Ownership Percentage, Noncontrolling Owner Capitalized software development costs Payments for Software Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Amortization of pushdown accounting allocation Amortization Period Pushdown Accounting Adjustment Amortization period for pushdown accounting adjustments. RSUs and RSAs Restricted Stock Units (RSUs) [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Executive Category: Executive Category [Axis] Cash paid for investments Payments to Acquire Investments Prepaid expense Prepaid Expense Tax liability Accrued Income Taxes Deferred tax asset Other Noncash Income Tax Expense Schedule of Components of Provisions for Income Taxes Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Tax Receivable Agreement - Interest Deferred Tax Assets Tax Receivable Agreement Deferred Tax Assets Tax Receivable Agreement Tax receivable agreement, payment term Tax Receivable Agreement, Term Tax Receivable Agreement, Term Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Letter of Credit Letter of Credit [Member] Company Selected Measure Name Company Selected Measure Name