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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. Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Justin Peterson Trading Arrangement, Restricted Stock Units During the Award's Vesting Priod of March 17, 2025 - March 17, 2026 [Member] Justin Peterson Trading Arrangement, Restricted Stock Units During the Award's Vesting Priod of March 17, 2025 - March 17, 2026 Number of reportable segments Number of Reportable Segments Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing [Axis] Expired (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period Dividends Payments of Ordinary Dividends Deferred tax assets Components of Deferred Tax Assets [Abstract] Performance period Share-Based Compensation Arrangement by Share-Based Payment Award, Performance Period Share-Based Compensation Arrangement by Share-Based Payment Award, Performance Period Software development costs capitalized Capitalized Computer Software, Additions 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Award, Cost [Table Text Block] Customer [Domain] Customer [Domain] Entity Central Index Key Entity Central Index Key PEO Name PEO Name 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 Sara Furber Trading Arrangement, Class A Common Stock, Upon Vesting on March 15, 2026 Previously Awarded Restricted Stock Units [Member] Sara Furber Trading Arrangement, Class A Common Stock, Upon Vesting on March 15, 2026 Previously Awarded Restricted Stock Units 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] ICDLC Institutional Cash 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Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Ownership [Axis] Ownership [Axis] Business Combination, Pro Forma Information, Nonrecurring Adjustment [Domain] Business Combination, Pro Forma Information, Nonrecurring Adjustment [Domain] Tax credits Effective Income Tax Rate Reconciliation, Tax Contingency, Amount [Abstract] Schedule of Class of Common Stock Par Value, Votes and Economic Rights Schedule of Stock by Class [Table Text Block] Fair Value as of Grant Date Award Grant Date Fair Value Net operating loss carryforwards Operating Loss Carryforwards Changes in unrecognized tax benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Amount Total Fair Value Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Employee compensation and benefits Employee compensation and benefits Labor and Related Expense Dilutive effect (in shares) Incremental Common Shares Attributable to Dilutive Effect of 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Forfeited (in shares) Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Total unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Related Party Transactions Related Party Transaction [Line Items] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] One Month Secured Overnight Financing Rate One Month Secured Overnight Financing Rate [Member] One Month Secured Overnight Financing Rate 2027 Lessee, Operating Lease, Liability, to be Paid, Year Two Stock split ratio, common stock Stockholders' Equity Note, Stock Split, Conversion Ratio 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 Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, 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 Justin Peterson [Member] Justin Peterson Digital assets and other investments at fair value Investments Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Tradeweb Markets Inc Tradeweb Markets Inc [Member] Tradeweb Markets Inc., the reporting entity. 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Other Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Banking Regulation, Regulatory Capital Requirement, Compliance [Table] Minimum Minimum [Member] Troy Dixon [Member] Troy Dixon Justin Peterson Trading Arrangement, Performance-based Restricted Stock Units, During the Award's Vesting Period of January 1, 2023 - January 1, 2026 [Member] Justin Peterson Trading Arrangement, Performance-based Restricted Stock Units, During the Award's Vesting Period of January 1, 2023 - January 1, 2026 Company Selected Measure Name Company Selected Measure Name Net income attributable to Tradeweb Markets Inc. Business Combination, Pro Forma Information, Pro Forma Income (Loss), after Tax Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Cash paid for amounts included in the measurement of operating lease liability Operating Lease, Payments Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Dividends payable Dividends Payable Net income attributable to outstanding shares of Class A and Class B common stock - Diluted Net Income (Loss) Available to Common Stockholders, Diluted Accumulated Amortization Capitalized Computer Software, Accumulated Amortization Tradeweb Markets LLC TradeWeb Markets Llc [Member] Tradeweb Markets LLC. Shares issued to underwriters (in shares) Stockholders' Equity Note [Abstract] Foreign Current Foreign Tax Expense (Benefit) Goodwill [Roll Forward] Goodwill [Roll Forward] Goodwill and intangibles Deferred Tax Liabilities, Goodwill Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Achievement of certain performance targets Share-Based Payment Arrangement, Tranche Two [Member] Receivable from and Payable to Brokers and Dealers and Clearing Organizations Industry-Specific Policies, Broker-Dealer [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 Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Derivative [Table] Derivative [Table] Reportable Segment Reportable Segment [Member] Reportable Segment Financial Resources Futures Commission Merchant, Commodity Exchange Act, Adjusted Net Capital Entity Small Business Entity Small Business Cost Capitalized Computer Software, Gross Crypto Asset [Axis] Crypto Asset [Axis] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] 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 Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding State and local Current State and Local Tax Expense (Benefit) Document Transition Report Document Transition Report Other assets Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent Douglas Friedman Trading Arrangement, Performance-based Restricted Stock Units, Accrued During Period of January 1, 2023 -January 1, 2026, Pursuant Award Agreement, Determined Vesting Date [Member] Douglas Friedman Trading Arrangement, Performance-based Restricted Stock Units, Accrued During Period of January 1, 2023 -January 1, 2026, Pursuant Award Agreement, Determined Vesting Date Underlying Securities Award Underlying Securities Amount Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date Income Taxes Income Tax Disclosure [Text Block] Accounts receivable, allowance for credit losses Accounts Receivable, Allowance for Credit Loss Class A Common Stock, par value $0.00001 per share Class A common stock Common Class A [Member] UK UNITED KINGDOM Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] William Hult Trading Arrangement, Class A Common Stock [Member] William Hult Trading Arrangement, Class A Common Stock Total equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Average price per share (in dollars per share) Shares Acquired, Average Cost Per Share Risks and Uncertainties [Abstract] Risks and Uncertainties [Abstract] William Hult Trading Arrangement, Class A Common Stock, Upon Vesting on January 1, 2026 [Member] William Hult Trading Arrangement, Class A Common Stock, Upon Vesting on January 1, 2026 Document Type Document Type Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Earnings Per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Loss Contingencies [Table] Loss Contingencies [Table] Additional paid-in capital Additional Paid in Capital Product and Service [Axis] Product and Service [Axis] Total revenue Total revenue Revenue from Contract with Customer, Excluding Assessed Tax 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. Broker-Dealer [Abstract] Douglas Friedman Trading Arrangement, Performance-based Stock Units During the Award’s Vesting Period of January 1, 2023 -January 1, 2026 [Member] Douglas Friedman Trading Arrangement, Performance-based Stock Units During the Award’s Vesting Period of January 1, 2023 -January 1, 2026 Statistical Measurement [Axis] Statistical Measurement [Axis] Share repurchase program, amount authorized Share Repurchase Program, Authorized, Amount Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Intrinsic value of options exercised during the year Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Payroll taxes paid for stock-based compensation Payment, Tax Withholding, Share-Based Payment Arrangement Share-based payment arrangement, accelerated cost Share-Based Payment Arrangement, Accelerated Cost Peer Group Issuers, Footnote Peer Group Issuers, Footnote [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 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 Equity securities without readily determinable 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. Entity Information [Line Items] Entity Information [Line Items] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Quoted Prices in active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Impaired Investment One Impaired Investment One [Member] Impaired Investment One Accounts payable, accrued expenses and other liabilities Business Combination, Recognized Liability Assumed, Accounts Payable, Current Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Diluted (in dollars per share) Earnings per share - Diluted (in dollars per share) Earnings Per Share, Diluted Other Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount 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 Total state and local Income Tax Paid, State and Local, after Refund Received Derivative Liability, Statement of Financial Position [Extensible Enumeration] Derivative Liability, Statement of Financial Position [Extensible Enumeration] Auditor Location Auditor Location 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. Digital Assets Digital Assets [Member] Digital Assets Fair value adjustments or credit losses Debt Securities, Available-for-Sale, Allowance for Credit Loss, Not Previously Recorded Prepaid expense Prepaid Expense 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. Share repurchases pursuant to share repurchase programs Stock Repurchased and Retired During Period, Value Justin Peterson Trading Arrangement, Performance-based Stock Units, During the Award's Vesting Period of January 1, 2023 - January 1, 2026 [Member] Justin Peterson Trading Arrangement, Performance-based Stock Units, During the Award's Vesting Period of January 1, 2023 - January 1, 2026 Domestic Domestic Tax Jurisdiction [Member] Noncontrolling Interest [Abstract] Noncontrolling Interest [Abstract] Sara Furber Trading Arrangement, Restricted Stock Units, During the Award's Vesting Period of March 17, 2025 - March 17, 2026 [Member] Sara Furber Trading Arrangement, Restricted Stock Units, During the Award's Vesting Period of March 17, 2025 - March 17, 2026 Less imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Sara Furber Trading Arrangement, Class A Common Stock, Upon Vesting on March 17, 2026 [Member] Sara Furber Trading Arrangement, Class A Common Stock, Upon Vesting on March 17, 2026 Other (in percent) Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent Income taxes paid, net of (refunds) Total income taxes paid, net of refunds Income Taxes Paid, Net 2027 2027 Finite-Lived Intangible Asset, Expected Amortization, Year Two Borrowings outstanding Long-Term Debt, Gross Digital assets – Canton Coins Fair Value Crypto Asset, Fair Value Grants (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer 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. Amy Clack Trading Arrangement, Class A Common Stock, Upon Vested January 1, 2026 [Member] Amy Clack Trading Arrangement, Class A Common Stock, Upon Vested January 1, 2026 Voting power percentage Voting power percentage Voting power percentage. Total future lease payments Lessee, Operating Lease, Liability, to be Paid Distributions to non-controlling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Tax receivable agreement liability Tax Receivable Agreement Liability The carrying amount as on the balance sheet date of tax receivable agreement liability. Tradename – Acquisitions Tradename – Refinitiv Transaction Trade Names [Member] Expiration Date Trading Arrangement Expiration Date Canton coins Canton Coins [Member] Canton Coins Other Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Percent 2030 2030 Finite-Lived Intangible Asset, Expected Amortization, Year Five Furniture, equipment, purchased software and leasehold improvements, net of accumulated depreciation and amortization Property, Plant and Equipment, Net Impaired Investment Three Impaired Investment Three [Member] Impaired Investment Three William Hult Trading Arrangement, Performance- based Stock Units, During the Award's Vesting Period of Januray 1, 2023 - Januray 1, 2026 [Member] William Hult Trading Arrangement, Performance- based Stock Units, During the Award's Vesting Period of Januray 1, 2023 - Januray 1, 2026 Numerator: Net Income (Loss) Attributable to Parent [Abstract] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Accounts receivable Increase (Decrease) in Accounts Receivable Entity Current Reporting Status Entity Current Reporting Status Derivative [Line Items] Derivative [Line Items] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Consolidated Entities [Domain] Consolidated Entities [Domain] Statutory U.S. federal tax rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Adjustments to reconcile net income to net cash provided by (used in) operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Executive Category: Executive Category [Axis] Foreign currency forward contracts – Gross notional amount Foreign Exchange Forward [Member] State and local income taxes, net of federal income tax effect (in percent) Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Current Fiscal Year End Date Current Fiscal Year End Date Maturity (years) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Equity Investments Equity Securities without Readily Determinable Fair Value [Policy Text Block] 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] Professional fees Professional fees Professional Fees Douglas Friedman Trading Arrangement, Class A Common Stock, Upon Vesting on January 1, 2026 of Previously Awarded Performance-based Stock Units [Member] Douglas Friedman Trading Arrangement, Class A Common Stock, Upon Vesting on January 1, 2026 of Previously Awarded Performance-based Stock Units Payable and due to related parties – Foreign exchange derivative contracts Derivative Liability Schedule of Financial Resources and Liquid Financial Resources Futures Commission Merchant, Minimum Financial Requirement [Table Text Block] 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] 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 Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Crypto asset, realized gain Crypto Asset, Realized Gain, Nonoperating Non-Controlling Interests Noncontrolling Interest Disclosure [Text Block] Issuance of common stock for business acquisitions Fair market value Stock Issued During Period, Value, Acquisitions Gross unrecognized tax benefits – January 1, 2025 Gross unrecognized tax benefits – December 31, 2025 Unrecognized Tax Benefits Antidilutive shares (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Cash paid for foreign currency call option, net of sale proceeds Payments for Derivative Instrument, Investing Activities Regulatory Capital Requirement Regulatory Capital Requirement Amount of regulatory capital required to be maintained for each entity under applicable regulations. Investment in partnership Deferred Tax Assets, Investments Leases Lessee, Operating Leases [Text Block] Amy Clack Trading Arrangement, Class A Common Stock [Member] Amy Clack Trading Arrangement, Class A Common Stock Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Weighted Average Grant-Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Douglas Friedman Trading Arrangement, Class A Common Stock [Member] Douglas Friedman Trading Arrangement, Class A Common Stock Measure: Measure [Axis] Schedule of Components of Software Development Costs Schedule Of Capitalized Computer Software [Table Text Block] Schedule Of Capitalized Computer Software Receivable from brokers and dealers and clearing organizations Receivable from brokers and dealers and clearing organizations Receivable from Broker-Dealer and Clearing Organization TWM LLC T W M L L C [Member] T W M L L C Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Stock repurchase program, remaining authorized repurchase amount Share Repurchase Program, Remaining Authorized, Amount 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 Deferred tax asset Other Noncash Income Tax Expense Digital Asset Loan Receivable Digital Asset Loan Receivable [Member] Digital Asset Loan Receivable TESBV Tradeweb Execution Services B.V. [Member] Tradeweb Execution Services B.V. Number of businesses acquired Business Combination, Number of Businesses Acquired Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Steven Berns [Member] Steven Berns Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Risk-free interest rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Entity Tax Identification Number Entity Tax Identification Number Grantee Status [Axis] Grantee Status [Axis] 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 Crypto asset, sale, number of units Crypto Asset, Sale, Number of Units Crypto Asset, Sale, Number of Units Common stock, shares issued (in shares) Common Stock, Shares, Issued Market Data Market Data Client Sector [Member] The market data client sector. Derivative Asset, Statement of Financial Position [Extensible Enumeration] Derivative Asset, Statement of Financial Position [Extensible Enumeration] Weighted average remaining lease term (years) Operating Lease, Weighted Average Remaining Lease Term Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Entity Public Float Entity Public Float Receivable from/payable to brokers and dealers and clearing organizations, net Increase (Decrease) in Receivable from Broker-Dealer and Clearing Organization Schedule of Goodwill Schedule of Goodwill [Table Text Block] Interest expense Interest Expense, Nonoperating Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Commitments and Contingencies Loss Contingencies [Line Items] Securities Sold Under Agreements to Repurchase Repurchase and Resale Agreements Policy [Policy Text Block] Security Exchange Name Security Exchange Name Total foreign Income Tax Paid, Foreign, after Refund Received Other (in percent) Effective Income Tax Rate Reconciliation, Cross-Border, Other, Percent Furniture, equipment, software and leasehold improvement additions included in accounts payable Capital Expenditures Incurred but Not yet Paid Software development costs, net of accumulated amortization Net Carrying Amount Capitalized Computer Software, Net Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill [Abstract] Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill [Abstract] Share repurchases pursuant to the share repurchase programs (in shares) Stock Repurchased During Period, Shares Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-Lived Intangible Assets, Major Class Name [Domain] Expenses Operating Expenses [Abstract] Retail Retail Client Sector [Member] The retail client sector. Public Investors Public Investors [Member] This member stands for public investors, collectively. Asset Class [Domain] Asset Class [Domain] PSUs Phantom Share Units (PSUs) [Member] 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 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 Justin Peterson Trading Arrangement, Class A Common Stock, Upon Vesting on January 1, 2026 [Member] Justin Peterson Trading Arrangement, Class A Common Stock, Upon Vesting on January 1, 2026 Statement [Line Items] Statement [Line Items] Cash and restricted cash Restricted Cash and Cash Equivalents, Fair Value Disclosure Restricted Cash and Cash Equivalents, Fair Value Disclosure Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Sara Furber Trading Arrangement, Performance-based Restricted Stock Units, Accrued During Award’s Vesting Period of January 1, 2023 -January 1, 2026, Pursuant Award Agreement, Determined Vesting Date [Member] Sara Furber Trading Arrangement, Performance-based Restricted Stock Units, Accrued During Award’s Vesting Period of January 1, 2023 -January 1, 2026, Pursuant Award Agreement, Determined Vesting Date Subsequent Event [Line Items] Subsequent Event [Line Items] Common Stock Common Stock [Member] Vested (in shares) Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Intangible Assets Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] Accrued compensation Employee-related Liabilities Net increase (decrease) in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Unrealized loss Unrealized gains Unrealized Gain (Loss) on Investments Significant Accounting Policies Significant Accounting Policies [Text Block] 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. Statistical Measurement [Domain] Statistical Measurement [Domain] Equipment Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Crypto Asset [Domain] Crypto Asset [Domain] Schedule of Equity-Settled PRSUs Issued Schedule of Nonvested Performance-Based Units Activity [Table Text Block] ICDLT Institutional Cash Distributors Limited [Member] Institutional Cash Distributors Limited Asset Class [Axis] Asset Class [Axis] Goodwill recognized expected to be tax deductible Business Combination, Goodwill, Expected Tax Deductible, Amount Deferred financing costs Payments of Financing Costs Sara Furber [Member] Sara Furber Total realized and unrealized gains included in other comprehensive income (loss) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Equity pickup loss Income (Loss) from Equity Method Investments Leases [Abstract] Increase in prior year tax positions Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Unsettled share repurchases and excise tax included in other liabilities Unsettled Share Repurchases Included In Other Liabilities Unsettled Share Repurchases Included In Other Liabilities 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 TW SEF Tw Sef Llc [Member] TW SEF LLC (TW SEF) is a swap execution facility regulated by the Commodities Future Trading Commission. 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 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 Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] EURIBOR EURIBOR [Member] EURIBOR Fed Funds Effective Rate Fed Funds Effective Rate Overnight Index Swap Rate [Member] Class of warrant or right, outstanding Class of Warrant or Right, Outstanding Basic (in dollars per share) Earnings per share - Basic (in dollars per share) Earnings Per Share, Basic Debt instrument floor rate Debt Instrument Floor Rate The Percentage of floor rate under debt instrument. Accounts payable, accrued expenses and other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Liabilities Liabilities, Fair Value Disclosure [Abstract] Douglas Friedman Trading Arrangement, Class A Common Stock, Upon Vesting on March 17, 2026 [Member] Douglas Friedman Trading Arrangement, Class A Common Stock, Upon Vesting on March 17, 2026 Changes in unrecognized tax benefits (in percent) Effective Income Tax Rate Reconciliation, Tax Contingency, Percent Deferred tax assets, gross Deferred Tax Assets, Gross Measurement Input, Discount Rate Measurement Input, Discount Rate [Member] Other comprehensive income (loss), net of tax Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Schedule of Information Regarding Revenue from External Customers by Client Sector Schedule of Segment Reporting Information, by Segment [Table Text Block] Measurement Input Type [Domain] Measurement Input Type [Domain] Affiliated Entity Affiliated Entity [Member] Employee compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits Intangible assets with indefinite useful lives Indefinite-Lived Intangible Assets [Line Items] Technology and communications Communications and Information Technology Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] General and administrative Other General and Administrative Expense William Hult Trading Arrangement, Class A Common Stock, Upon Vesting on January 1, 2026 of Previously Awarded Performance-based Restricted Stock Units [Member] William Hult Trading Arrangement, Class A Common Stock, Upon Vesting on January 1, 2026 of Previously Awarded Performance-based Restricted Stock Units Excise tax Share Repurchase Program, Excise Tax Revenues Disaggregation of Revenue [Abstract] Foreign currency translation adjustments, tax benefit Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax 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. PRSU compensation expense Options compensation expense Total stock-based compensation expense Share-Based Payment Arrangement, Expense PRSUs Performance Shares Settled With Equity [Member] Performance Shares Settled With Equity Hedging Designation [Domain] Hedging Designation [Domain] Pre-money equity value Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Preacquisition Estimated Value Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Preacquisition Estimated Value Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Total liabilities and equity Liabilities and Equity Translation of Foreign Currency and Foreign Exchange Derivative Contracts Foreign Currency Transactions and Translations Policy [Policy Text Block] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Common stock shares issued by corporation (in shares) Issuance of common stock for business acquisitions (in shares) Stock Issued During Period, Shares, Acquisitions Options Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Other Deferred Tax Assets, Other General and Administrative Expense General and Administrative Expense [Member] ICD and R8Fin ICD And R8Fin [Member] ICD And R8Fin Accounting Policies [Abstract] Accounting Policies [Abstract] Schedule of Maturity of Lease Liabilities and Future Minimum Lease Payments Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Fair value of vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Pay vs Performance Disclosure [Line Items] Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] R8Fin Acquisition R8Fin [Member] R8Fin Lease liabilities Operating lease liabilities Lease liability Operating Lease, Liability Equity impairment Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Annual Amount Liabilities Liabilities [Abstract] Acquisitions Business Combination [Text Block] Depreciation and amortization Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Deferred revenue Increase (Decrease) in Deferred Revenue 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] Impairment of goodwill Goodwill, Impairment Loss Sara Furber Trading Arrangement, Class A Common Stock, Upon Vesting on January 1, 2026 [Member] Sara Furber Trading Arrangement, Class A Common Stock, Upon Vesting on January 1, 2026 Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount 2028 Lessee, Operating Lease, Liability, to be Paid, Year Three Number of investment providers Number Of Investment Providers Number Of Investment Providers 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] Comprehensive income attributable to Tradeweb Markets Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Measurement Input Type [Axis] Measurement Input Type [Axis] Expired (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Investments in Digital Assets - Canton Coins Platform Operator, Crypto Asset [Policy Text Block] Name Measure Name Schedule of Components of Income Before Taxes Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Class of Stock [Line Items] Class of Stock [Line Items] 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] Deferred tax liability Deferred Income Tax Liabilities, Net Douglas Friedman Trading Arrangement, Restricted Stock Units, During the Award's Vesting Period of March 17, 2024 - March 17, 2026 [Member] Douglas Friedman Trading Arrangement, Restricted Stock Units, During the Award's Vesting Period of March 17, 2024 - March 17, 2026 Nontaxable or nondeductible items Effective Income Tax Rate Reconciliation, Nondeductible Expense, Depreciation and Amortization, Percent [Abstract] Number of share owned (in shares) Number Of Share Owned Number of share owned. 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. 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Schedule of Components of Provisions for Income Taxes Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] YB Yieldbroker Yieldbroker [Member] Yieldbroker Furniture, Equipment, Purchased Software and Leasehold Improvements Property, Plant and Equipment, Policy [Policy Text Block] PEO PEO [Member] Lease Contractual Term [Domain] Lease Contractual Term [Domain] Unfunded capital commitment Equity Securities, Unfunded Capital Commitment Equity Securities, Unfunded Capital Commitment Non-cash investing and financing activities: Noncash Investing and Financing Items [Abstract] U.S. UNITED STATES William Hult Trading Arrangement, Performance-based Restricted Stock Units, During the Award's Vesting Period of January 1, 2023 - January 1, 2026 [Member] William Hult Trading Arrangement, Performance-based Restricted Stock Units, During the Award's Vesting Period of January 1, 2023 - January 1, 2026 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. Annualized volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate 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 Retained Earnings Retained Earnings [Member] Income Tax Authority [Axis] Income Tax Jurisdiction [Axis] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Beginning of period End of period Cash, cash equivalents and restricted cash shown in the statement of cash flows Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Receivable and due from related parties – Foreign exchange derivative contracts Derivative Asset Douglas Friedman [Member] Douglas Friedman Interest payable Income Tax Examination, Interest Accrued Fair Value, Nonrecurring Fair Value, Nonrecurring [Member] Intangible assets, net of accumulated amortization Intangible Assets, Net (Excluding Goodwill) Product and Service [Domain] Product and Service [Domain] Net income Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Total liabilities measured at fair value Liabilities, Fair Value Disclosure Business Combination [Table] Business Combination [Table] Gross notional amount Derivative, Notional Amount Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Schedule of Final Purchase Price Allocations Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] TWSA Tradeweb Saudi Arabia [Member] Tradeweb Saudi Arabia Schedule of Recognized Revenue and Remaining Deferred Revenue Balance Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Cash flows from investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Long-lived assets Long-Lived Assets Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Adjustments to non-controlling interests Minority Interest Increase Decrease From Adjustments Amount of increase (decrease) in noncontrolling interest from adjustments. 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Excess Financial Resources Futures Commission Merchant, Commodity Exchange Act, Excess Net Capital 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. Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Cost Basis Crypto Asset, Cost 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. 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Ltd. [Member] Tradeweb Asia Pte. Ltd. Unrealized gain on a minority equity investment Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount Schedule of Fair Value Measurements Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Net transfers (to) from non-controlling interests Transfers From (To) Noncontrolling Interests Amount of net transfers from (to) non controlling interest. Subsequent Events Subsequent Events [Text Block] Deposits with clearing organizations Increase (Decrease) in Deposit Assets Foreign currency translation adjustments, with no tax benefit for each of the years ended December 31, 2025, 2024 and 2023 Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Insider Trading Arrangements [Line Items] Forfeited (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Interest income Investment Income, Interest and Dividend Institutional Institutional Client Sector [Member] The institutional client sector. Total liabilities Liabilities Operating income Business Acquisition, Pro Forma Operating Income (Loss) Business Acquisition, Pro Forma Operating Income (Loss) Commitment fee, percentage Line of Credit Facility, Commitment Fee Percentage 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 Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Increase in current year tax positions Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Investments in Available-for-Sale Debt Securities Debt Securities, Available-for-Sale, Premium on Purchased Options [Policy Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Amortization of pushdown accounting allocation Amortization Period Pushdown Accounting Adjustment Amortization period for pushdown accounting adjustments. Issuance of common stock from equity incentive plans Stock Issued During Period, Value, New Issues Variable Rate [Axis] Variable Rate [Axis] Acquired tax positions Unrecognized Tax Benefits, Increase Resulting from Acquisition Counterparty [Axis] Counterparty Name [Axis] Deferred tax liabilities Components of Deferred Tax Liabilities [Abstract] Investment in available for sale debt securities Debt Securities, Available-for-Sale Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] 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