DW SEF Dw Sef Llc [Member] DW SEF LLC (DW SEF) is a swap execution facility regulated by the Commodities Future Trading Commission. Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization 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] Crypto Asset [Domain] Crypto Asset [Domain] Award Timing Predetermined Award Timing Predetermined [Flag] Reminder of 2025 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year ICDLT Institutional Cash Distributors Limited [Member] Institutional Cash Distributors Limited Asset Class [Axis] Asset Class [Axis] Unrealized gain on available-for-sale debt security, tax expense OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, Tax Entity File Number Entity File Number Additional Paid-In Capital Additional Paid-in Capital [Member] Wholesale Wholesale Client Sector [Member] The wholesale client sector. 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) Tabular List, Table Tabular List [Table Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy 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 Balances From Transactions with Affiliates Included in the Consolidated Statements Schedule of Related Party Transactions [Table Text Block] Secured Overnight Financing Rate (SOFR) Secured Overnight Financing Rate (SOFR) [Member] Schedule of Financial Instruments Not Measured at Fair Value Fair Value, by Balance Sheet Grouping [Table Text Block] Investment in Available for Sale Debt Securities Debt Securities [Member] 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 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] Basic (in dollars per share) Earnings per share - Basic (in dollars per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Debt instrument floor rate Debt Instrument Floor Rate The Percentage of floor rate under debt instrument. Related Party Transactions Related Party Transactions Disclosure [Text Block] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts payable, accrued expenses and other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Liabilities Liabilities, Fair Value Disclosure [Abstract] 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. Revenue Revenue from Contract with Customer [Text Block] Award Date [Axis] Award Date [Axis] Tax receivable agreement liability adjustment Tax Receivable Agreement Liability, Adjustment Tax Receivable Agreement Liability, Adjustment 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 by Client Sector Schedule of Segment Reporting Information, by Segment [Table Text Block] Measurement Input Type [Domain] Measurement Input Type [Domain] Adjustment to Compensation, Amount Adjustment to Compensation Amount Affiliated Entity Affiliated Entity [Member] Unrealized gain relating to level 3 assets held Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) Other assets Increase (Decrease) in Other Operating Assets Pushdown Accounting Consolidation, Policy [Policy Text Block] Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Technology and communications Technology and communications Communications and Information Technology Options Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] General and administrative General and administrative Other General and Administrative Expense Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] General and administrative Other General and Administrative Expense, Net Of Reclassification Other General and Administrative Expense, Net Of Reclassification Grantee Status [Domain] Grantee Status [Domain] Revenues Disaggregation of Revenue [Abstract] Foreign currency translation adjustment, tax benefit Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax 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. Antidilutive Securities [Axis] Antidilutive Securities [Axis] Total stockholders’ equity attributable to Tradeweb Markets Inc. Equity, Attributable to Parent Measurement Frequency [Axis] Measurement Frequency [Axis] Schedule of Canton Coin Holdings Crypto Asset, Holding [Table Text Block] Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Insider Trading Policies and Procedures [Line Items] Total stock-based compensation expense Share-Based Payment Arrangement, Expense Common stock, shares authorized (in shares) Common Stock, Shares Authorized Hedging Designation [Domain] Hedging Designation [Domain] Issuance of common stock from equity incentive plans (in shares) Stock Issued During Period, Shares, New Issues 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] Non-Controlling Interests Noncontrolling Interest [Line Items] Common stock shares issued by corporation (in shares) Issuance of common stock for business acquisition (in shares) Stock Issued During Period, Shares, Acquisitions Liabilities and Equity Liabilities and Equity [Abstract] Awarded During 2024 And 2023 Awarded During 2024 And 2023 [Member] Awarded During 2024 And 2023 Cover [Abstract] Cash equivalents – Money market funds and other highly liquid investments Cash and Cash Equivalents, Fair Value Disclosure Maximum Maximum [Member] Useful life of intangible assets Finite-Lived Intangible Asset, Useful Life Less: Net income attributable to non-controlling interests Less: Net income attributable to non-controlling interests Net Income (Loss) Attributable to Noncontrolling Interest Bridge Loan Bridge Loan [Member] 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] RSUs and RSAs Restricted Stock [Member] Schedule of PSUs Granted, Valuation Assumptions Schedule of Share-Based Payment Award, PSUs Granted, Valuation Assumptions [Table Text Block] Schedule of Share-Based Payment Award, PSUs Granted, Valuation Assumptions Software Development Costs Internal Use Software, Policy [Policy Text Block] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] R8Fin R8Fin [Member] R8Fin Lease liabilities Lease liability Operating Lease, Liability Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Liabilities Liabilities [Abstract] Acquisitions Business Combination [Text Block] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Depreciation and amortization Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Income before taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company 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] 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 Statement of Stockholders' Equity [Abstract] LLC Interests Limited Liability Company Units [Member] Limited Liability Company Units Stock-based compensation expense capitalized Share-Based Payment Arrangement, Amount Capitalized 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 Award Timing MNPI Considered Award Timing MNPI Considered [Flag] 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 Comprehensive income attributable to Tradeweb Markets Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Measurement Input Type [Axis] Measurement Input Type [Axis] Investments in Digital Assets - Canton Coins Platform Operator, Crypto Asset [Policy Text Block] Name Measure Name Letter of Credit Letter of Credit [Member] Schedule of Total Stock-based Compensation Expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Receivable and due from affiliates Receivable and due from affiliates Other Receivables 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 Document Fiscal Period Focus Document Fiscal Period Focus Restricted Cash Equivalent [Abstract] Restricted Cash Equivalent [Abstract] Award Timing Method Award Timing Method [Text Block] 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. Award Type [Axis] Award Type [Axis] Legal Entity [Axis] Legal Entity [Axis] Schedule Of Unaudited Supplemental Pro Forma Financial Information Business Combination, Pro Forma Information [Table Text Block] Total assets Assets Stock-Based Compensation Share-Based Payment Arrangement [Policy Text Block] Trading Symbol Trading Symbol 2029 Lessee, Operating Lease, Liability, to be Paid, Year Four Business Combinations Business Combination [Policy Text Block] Geographical [Domain] Geographical [Domain] RSUs and RSAs Restricted Stock Units and Restricted Stock [Member] Restricted Stock Units and Restricted Stock Income Tax Income Tax, Policy [Policy Text Block] Entity Address, City or Town Entity Address, City or Town Cash flows from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Equity Members' Equity [Abstract] Other segment items Segment Reporting, Other Segment Item, Amount 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] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Securities sold under agreements to repurchase Increase (Decrease) in Financial Instruments Sold, Not yet Purchased RSUs Restricted Stock Units (RSUs) [Member] Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Allowance for Credit Losses Credit Loss, Financial Instrument [Policy Text Block] Tax Receivable Agreement Tax Receivable Agreement Liability Disclosure [Text Block] The entire disclosure of tax receivable agreement liability. Cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation [Abstract] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Net cash acquired Business Combination, Consideration Transferred Assets Assets, Fair Value Disclosure [Abstract] Entity Emerging Growth Company Entity Emerging Growth Company Dividends (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Deferred tax asset as a result of transferable tax credit purchase Increase (Decrease) In Deferred Tax Assets Increase (Decrease) In Deferred Tax Assets (Increase) decrease in operating assets: Increase (Decrease) in Operating Assets [Abstract] 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] Significant Observable Inputs (Level 2) Significant Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Payments on tax receivable agreement liability Payments on Tax Receivable Agreement, Liability Payments on Tax Receivable Agreement, Liability Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Business Combination [Domain] Business Combination [Domain] Deposits with Clearing Organizations Deposits With Clearing Organizations [Policy Text Block] Disclosure of accounting policy for deposits with clearing organizations. Required Financial Resources Futures Commission Merchant, Commodity Exchange Act, Required Net Capital Class C Common Stock Common Class C [Member] TESL Tradeweb Execution Services Limited [Member] Tradeweb Execution Services Limited Common stock, shares outstanding (in shares) Common stock beginning balance (in shares) Common stock ending balance (in shares) Common Stock, Shares, Outstanding Other assets – Memberships in clearing organizations Receivables from Clearing Organizations Conversion ratio Noncontrolling Interest, Conversion Ratio The conversion ratio of shares of non-controlling interests. Accounts receivable, credit loss expense (reversal) Accounts Receivable, Credit Loss Expense (Reversal) YB Yieldbroker [Member] Yieldbroker Furniture, Equipment, Purchased Software and Leasehold Improvements Property, Plant and Equipment, Policy [Policy Text Block] PEO PEO [Member] Schedule of Breakdown of Revenues Between Fixed and Variable Revenues Disaggregation of Revenue [Table Text Block] Non-cash investing and financing activities Noncash Investing and Financing Items [Abstract] U.S. UNITED STATES 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] 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 Retained Earnings Retained Earnings [Member] Accounts payable, accrued expenses and other liabilities Accounts payable, accrued expenses and other liabilities Accounts Payable and Accrued Liabilities Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date 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] Derivative asset Derivative Asset Provision for income taxes Income Tax Expense (Benefit) Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate 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. Class B Common Stock Common Class B [Member] Other assets Other assets Other Assets Fair Value, Nonrecurring Fair Value, Nonrecurring [Member] Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Convertible Notes Payable Convertible Notes Payable [Member] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Intangible assets, net of accumulated amortization Intangible Assets, Net (Excluding Goodwill) Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Product and Service [Domain] Product and Service [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] 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, 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] Crypto Asset, Holding [Line Items] Crypto Asset, Holding [Line Items] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] 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. Proceeds from stock-based compensation exercises Proceeds from Stock Options Exercised City Area Code City Area Code Cash paid for acquisitions, net of cash acquired Cash paid for acquisition, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Regulatory Capital Requirements Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] TWSA Tradeweb Saudi Arabia [Member] Tradeweb Saudi Arabia Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] 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] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation 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 Adjustments to non-controlling interests Minority Interest, Increase (Decrease) From Adjustments Amount of increase (decrease) in noncontrolling interest from adjustments. Revolving credit facility, term Debt Instrument, Term Related Party Transactions [Abstract] Related Party Transactions [Abstract] TDIFC Tradeweb Limited [Member] TDIFC Other Other Other fees Financial Service, Other [Member] Dispositions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Useful life Property, Plant and Equipment, Useful Life Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Subsequent Event Subsequent Event [Member] Business Segment and Geographic Information Revenues from External Customers and Long-Lived Assets [Line Items] Selling, General and Administrative Expenses Selling, General and Administrative Expenses [Member] Payable and due to affiliates Payable and due to affiliates Other Liabilities Goodwill Goodwill Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Depreciation expense Depreciation Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Establishment of liabilities under tax receivable agreement Liabilities Assumed Equity Components [Axis] Equity Components [Axis] International Non-US [Member] Furniture, Equipment, Purchased Software and Leasehold Improvements Property, Plant and Equipment [Line Items] Transaction fees and commissions 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. Excess Regulatory Capital Excess Regulatory Capital Amount by which the entity's regulatory capital (as defined) exceeds the requirement. Subscription fees Subscription Fee And Market Data Revenue [Member] Subscription fee revenue from granting access to institutional investors to the entity's electronic marketplaces and fees from the sale of market data to Refinitiv. Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Number of reportable segments Number of Reportable Segments Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing [Axis] Dividends Payments of Ordinary Dividends Supplemental disclosure of cash flow information Supplemental Cash Flow Information [Abstract] Adjusted For Refinitiv Transaction Adjusted For Refinitiv Transaction [Member] Reflects a new basis of accounting resulting from the Refinitiv transaction. Amortized cost basis Debt Securities, Available-for-Sale, Amortized Cost Performance period Share-Based Compensation Arrangement by Share-Based Payment Award, Performance Period Share-Based Compensation Arrangement by Share-Based Payment Award, Performance Period Other Performance Measure, Amount Other Performance Measure, Amount Entity Address, State or Province Entity Address, State or Province Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Fair Value Measurement Fair Value Measurement, Policy [Policy Text Block] Related Party [Domain] Related and Nonrelated Parties [Domain] Dividends Dividends 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. Derivative Instrument [Axis] Derivative Instrument [Axis] Individual: Individual [Axis] Restricted cash Restricted cash Restricted cash Restricted Cash Entities [Table] Entities [Table] Entity [Domain] Entity [Domain] Amortization expense Amortization Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Credit adjustment spread Debt Instrument, Credit Adjustment Spread Debt Instrument, Credit Adjustment Spread Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Lease right-of-use assets Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Ownership percentage, continuing LLC owners Number of LLC Interests held by non-controlling interests Subsidiary, Ownership Percentage, Noncontrolling Owner Effective tax rate Effective Income Tax Rate Reconciliation, Percent Entity Interactive Data Current Entity Interactive Data Current Change in Contract with Customer Change In Contract with Customer, Liability [Roll Forward] Change In Contract with Customer, Liability Capitalized software development costs Payments for Software ICDLC Institutional Cash Distributors [Member] Institutional Cash Distributors Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Business Segment and Geographic Information Segment Reporting Disclosure [Text Block] Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Fair Value of Financial Instruments Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Credit Risk Allowance for Credit Losses [Text Block] Furniture, Equipment, Purchased Software and Leasehold Improvements Furniture Equipment And Purchased Software [Member] Furniture, equipment and purchased software. Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Intangible Assets Finite-Lived Intangible Assets [Line Items] Ownership [Domain] Ownership [Domain] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Total LLC Interests outstanding Minority Interest Total Ownership Percentage The total ownership interest on noncontrolling interest expressed as a percentage. Amortization expense Amortization of Intangible Assets Leases Lessee, Leases [Policy Text Block] Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Other Stockholders Other Stockholders [Member] Other Stockholders Deferred tax asset Deferred Income Tax Assets, Net Significant unobservable input Debt Securities, Available-for-Sale, Measurement Input Customer [Domain] Customer [Domain] Entity Central Index Key Entity Central Index Key PEO Name PEO Name Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Realized and unrealized gains (losses) on derivative contracts Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net 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] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Receivable and due from affiliates/payable and due to affiliates, net Increase (Decrease) Due from Affiliates Fixed Fixed-Price Contract [Member] Schedule of Outstanding Shares Of Common Stock Schedule of Stockholders Equity [Table Text Block] Revolving credit facility Revolving Credit Facility [Member] Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segments [Axis] Segments [Axis] Tradeweb Markets LLC Tradeweb Markets LLC [Member] Tradeweb Markets LLC. Accounts receivable, net of allowance for credit losses of $297 and $447 at June 30, 2025 and December 31, 2024, 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. Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Class of Stock [Domain] Class of Stock [Domain] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Stockholders' Equity and Stock-Based Compensation Plans Share-Based Payment Arrangement [Text Block] ICD Acquisition ICD [Member] ICD Assets Assets [Abstract] Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Issuance, allocated to consideration transferred for the business combination Stock Issued During Period, Value, Pre-Acquisition Stock Issued During Period, Value, Pre-Acquisition Liquid Financial Assets Liquid Financial Assets Liquid financial assets calculated under the Commodity Exchange Act. 2022 Share Repurchase Program 2022 Share Repurchase Program [Member] 2022 Share Repurchase Program Fair Value of Financial Instruments and Other Assets Fair Value Disclosures [Text Block] Business Combination [Line Items] Business Combination [Line Items] Credit Facility [Domain] Credit Facility [Domain] 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] Business Combination, Pro Forma Information, Nonrecurring Adjustment [Axis] Business Combination, Pro Forma Information, Nonrecurring Adjustment [Axis] Vesting percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Entity Address, Address Line One Entity Address, Address Line One Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Interest rate Debt Instrument, Interest Rate, Stated Percentage Number of shares withheld (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Activities related to exchanges of LLC Interests (in shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Issuance of common stock for business acquisitions Stock Issued Business 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] Fair Value as of Grant Date Award Grant Date Fair Value Corporates Corporate Client Sector [Member] Corporate Client Sector Entity Registrant Name Entity Registrant Name Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] 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 Operating loss 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 Dilutive effect (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Cash paid for investments Payments to Acquire Investments Title of Individual [Domain] Title and Position [Domain] Total expenses Costs and Expenses 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. Required Liquid Financial Assets Required Liquid Financial Assets Amount of liquid financial assets required to be maintained under the Commodity Exchange Act. Related Party Transactions Related Party Transaction [Line Items] Measurement Input, Perpetual Growth Rate Measurement Input, Perpetual Growth Rate [Member] Measurement Input, Perpetual Growth Rate Document Quarterly Report Document Quarterly Report Total assets measured at fair value Assets, Fair Value Disclosure Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Yieldbroker Acquisition Yieldbroker Acquisition [Member] Yieldbroker Acquisition Equity investment without readily determinable fair values Equity Securities without Readily Determinable Fair Value, Amount Number of operating segments Number of Operating Segments 2027 Lessee, Operating Lease, Liability, to be Paid, Year Two One Month SOFR One Month Secured Overnight Financing Rate [Member] One Month Secured Overnight Financing Rate Stock split ratio, common stock Stockholders' Equity Note, Stock Split, Conversion Ratio Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Related Party [Axis] Related and Nonrelated Parties [Axis] Weighted-average grant-date fair value (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 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. Restatement Determination Date: Restatement Determination Date [Axis] Non-PEO NEO Non-PEO NEO [Member] Letters of credit outstanding Letters of Credit Outstanding, Amount Allowance for credit losses recorded on available-for-sale debt securities Debt Securities, Available-for-Sale, Allowance for Credit Loss 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 Number of reporting units Number of Reporting Units Less: Other comprehensive income (loss) attributable to non-controlling interests Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest Expenses Interest Income, Securities, Operating, by Taxable Status [Abstract] Issuance, amortized into stock-based compensation expense Stock Issued During Period, Value, Post-Acquisition Stock Issued During Period, Value, Post-Acquisition Name Trading Arrangement, Individual Name Award Type [Domain] Award Type [Domain] 2026 Lessee, Operating Lease, Liability, to be Paid, Year One Contract with Customer, Basis of Pricing [Domain] Contract with Customer, Basis of Pricing [Domain] Non-controlling interests Equity, Attributable to Noncontrolling Interest Equity Awards Adjustments Equity Awards Adjustments [Member] Other (income) loss, net Other Noncash Income (Expense) Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] 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 Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Compensation Amount Outstanding Recovery Compensation Amount 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. 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] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Revenue recognized that was previously deferred Contract with Customer, Liability, Revenue Recognized Accrued compensation Increase (Decrease) in Employee Related Liabilities 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. Share Repurchase Program [Axis] Share Repurchase Program [Axis] Equity interests issued and issuable Business Combination, Consideration Transferred, Equity Interest MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Name Awards Close in Time to MNPI Disclosures, Individual Name Weighted average shares outstanding: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Revenues Revenue: Revenues [Abstract] Stock-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Equity investment impairment Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Unrealized gain on available-for-sale debt security, net of tax expense of $741 and $799 for the three and six months ended June 30, 2025 OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Refinitiv Refinitiv [Member] Refinitiv, formerly the Thomson Reuters Financial & Risk Business. Segments [Domain] Segments [Domain] Additions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Award Date [Domain] Award Date [Domain] Income Statement Location [Axis] Statement of Income Location, Balance [Axis] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Subscription fees Subscription fees Subscription Fee Revenue [Member] Subscription fee revenue from granting access to institutional investors to the entity's electronic marketplaces. Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] 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] Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Company Selected Measure Name Company Selected Measure Name Additional adjustment Debt Instrument, Adjustment In Addition To Credit Adjustment Spread Debt Instrument, Adjustment In Addition To Credit Adjustment Spread Net income attributable to Tradeweb Markets Inc. Business Combination, Pro Forma Information, Pro Forma Income (Loss), after Tax Quantity (canton coins) Crypto Asset, Number of Units Preferred stock, $0.00001 par value; 250,000,000 shares authorized; none issued or outstanding Preferred Stock, Value, Issued Aggregate Available Trading Arrangement, Securities Aggregate Available Amount 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 All Executive Categories All Executive Categories [Member] Common stock, value Common Stock, Value, Issued Awards Granted to Employee Share-Based Payment Arrangement, Employee [Member] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Title of Individual [Axis] Title and Position [Axis] Receivable from and Payable to Broker 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 Commitments and contingencies (Note 13) Commitments and Contingencies Variable Variable Pricing [Member] Contract with customer in which amount of consideration is based on variable components such as transaction based fees. Increase (decrease) in operating liabilities: Increase (Decrease) in Operating Liabilities [Abstract] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Cash acquired from acquisition Cash Acquired from Acquisition Derivative [Table] Derivative [Table] Business Combination [Axis] Business Combination [Axis] Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Reportable Segment Reportable Segment [Member] Reportable Segment Financial Resources Futures Commission Merchant, Commodity Exchange Act, Adjusted Net Capital Entity Small Business Entity Small Business 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 Non- Controlling Interests Noncontrolling Interest [Member] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Document Transition Report Document Transition Report Noncontrolling Interest [Table] Noncontrolling Interest [Table] Underlying Securities Award Underlying Securities Amount Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Income Taxes Income Tax Disclosure [Text Block] 2019 Omnibus Equity Incentive Plan Omnibus2019 Equity Incentive Plan [Member] Represents the information pertaining to omnibus 2019 equity incentive plan. Accounts receivable, allowance for credit losses Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss Class A Common Stock Common Class A [Member] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Hedging Designation [Axis] Hedging Designation [Axis] 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] Document Type Document Type Significant Unobservable Inputs (Level 3) Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Earnings Per Share Earnings Per Share [Text Block] Distributions to non-controlling interests Payments Of Capital Distribution To Noncontrolling Interest Amount of cash outflow in the form of capital distribution to noncontrolling interests. 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] Derivative Contract [Domain] Derivative Contract [Domain] Total revenue Total revenue Revenues Revenue from Contract with Customer, Excluding Assessed Tax Award requisite service period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period All Individuals All Individuals [Member] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] 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. Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Broker-Dealer [Abstract] Purchases of furniture, equipment, software and leasehold improvements Payments to Acquire Property, Plant, and Equipment Name Forgone Recovery, Individual Name 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 Statistical Measurement [Axis] Statistical Measurement [Axis] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Share repurchase program, amount authorized Share Repurchase Program, Authorized, Amount Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount 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 Schedule of Derivative Values Schedule of Derivative Instruments [Table Text Block] 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] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Geographical [Axis] Geographical [Axis] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Quoted Prices in active Markets for Identical Assets (Level 1) Quoted Prices in active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Revenue Business Combination, Pro Forma Information, Pro Forma Revenue Realized and unrealized gains (losses) Gain (Loss), Foreign Currency Transaction, before Tax 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 Less: Distributed and undistributed earnings allocated to participating securities Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Accordion feature Line of Credit Facility, Accordion Feature, Increase Limit Line of Credit Facility, Accordion Feature, Increase Limit Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Excess Liquid Financial Assets Excess Liquid Financial Assets The amount by which actual liquid financial assets exceeds (does not exceed) required liquid financial assets under the Commodity Exchange Act Title of 12(b) Security Title of 12(b) Security Net Income Per Share Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] 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 Earnings per share attributable to Tradeweb Markets Inc. Class A and B common stockholders: Earnings Per Share [Abstract] Earnings Per Share [Abstract] Total LLC Interests outstanding (in shares) Minority Interest Total Number Of Interests The total number of shares of the subsidiary. Ownership interest Number of LLC Interests held by Tradeweb Markets Inc. Subsidiary, Ownership Percentage, Parent 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 Schedule of Antidilutive Shares Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Fair value adjustments or credit losses Credit losses on available-for-sale debt securities 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. Noncontrolling Interest [Abstract] Noncontrolling Interest [Abstract] Less imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Common stock repurchased (in shares) Treasury Stock, Shares, Acquired Income taxes paid, net of (refunds) Income Taxes Paid, Net Award Timing Disclosures [Line Items] Letter of credit issued Long-Term Debt, Gross Other assets – Digital Assets – Canton Coins Fair Value Crypto Asset, Fair Value Measurement Frequency [Domain] Measurement Frequency [Domain] 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. Total future lease payments Lessee, Operating Lease, Liability, to be Paid 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 PRSUs Equity Settled Performance Based Restricted Stock Units [Member] Equity Settled Performance Based Restricted Stock Units [Member] Distributions to non-controlling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Tax receivable agreement liability Tax receivable agreement liability Tax Receivable Agreement Liability The carrying amount as on the balance sheet date of tax receivable agreement liability. Net income attributable to Tradeweb Markets Inc. Net income attributable to Tradeweb Markets Inc. Net income attributable to Tradeweb Markets Inc. Net Income (Loss) Attributable to Parent Subsequent Event [Table] Subsequent Event [Table] Expiration Date Trading Arrangement Expiration Date Regulatory Capital Regulatory Capital Regulatory capital as calculated for each entity under applicable regulations. Canton Coins Canton Coins [Member] Canton Coins Maximum contractual term Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Furniture, equipment, purchased software and leasehold improvements, net of accumulated depreciation and amortization Property, Plant and Equipment, Net Business Segment and Geographic Information Segment Reporting Information [Line Items] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Numerator: Net Income (Loss) Attributable to Parent [Abstract] Share repurchases pursuant to share repurchase programs Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Accounts receivable Increase (Decrease) in Accounts Receivable Deposits with clearing organizations Deposits with clearing organizations Deposits with Clearing Organizations and Others, Securities Entity Current Reporting Status Entity Current Reporting Status Initial term of lease Lessee, Operating Lease, Term of Contract Derivative [Line Items] Derivative [Line Items] Customer [Axis] Customer [Axis] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Revenue recognized Contract With Customer, Liability, Revenue Recognized Including New Billings Contract With Customer, Liability, Revenue Recognized Including New Billings Operating income Operating Income (Loss) Consolidated Entities [Domain] Consolidated Entities [Domain] Retained earnings Retained Earnings (Accumulated Deficit) Regulatory Capital Requirements Regulatory Capital Requirements [Text Block] The entire disclosure of capital requirements and required financial resources under applicable regulations. 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] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Executive Category: Executive Category [Axis] Foreign currency forward contracts – Gross notional amount Foreign Exchange Forward [Member] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Four Lessee, Operating Lease, Liability, to be Paid, after Year Four Current Fiscal Year End Date Current Fiscal Year End Date Class of Stock [Axis] Class of Stock [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] 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] 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] Equity Investments Without Readily Determinable Fair Values Equity Securities without Readily Determinable Fair Value [Policy Text Block] Other income (loss), net Other Nonoperating Income (Expense) Professional fees Professional fees Professional Fees Statement [Table] Statement [Table] Liabilities Derivative Liability Restricted Cash Restricted Assets Disclosure [Text Block] Schedule of Financial Resources and Liquid Financial Resources Futures Commission Merchant, Minimum Financial Requirement [Table Text Block] Effect of exchange rate changes on cash, cash equivalents and restricted cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Deferred taxes Deferred Income Tax Expense (Benefit) 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] Cash flows from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Non-Controlling Interests Noncontrolling Interest Disclosure [Text Block] Variable Rate [Domain] Variable Rate [Domain] Deferred revenue Deferred revenue balance - beginning of period Deferred revenue balance - ending of period Deferred revenue Contract with Customer, Liability Organization Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Issuance of common stock for business acquisitions Stock Issued During Period, Value, Acquisitions Antidilutive shares (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Summary of Changes in Fair Value for Level 3 Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Future minimum lease payments for lease not yet commenced Unrecorded Unconditional Purchase Obligation All Adjustments to Compensation All Adjustments to Compensation [Member] Regulatory Capital Requirement Regulatory Capital Requirement Amount of regulatory capital required to be maintained for each entity under applicable regulations. Amendment Flag Amendment Flag Number of shares authorized (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Software Development Software Development [Member] Termination Date Trading Arrangement Termination Date Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Consideration transferred, net of equity issued Business Combination, Consideration Transferred, Net Of Equity Issued Business Combination, Consideration Transferred, Net Of Equity Issued 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 TWM LLC [Member] TWM LLC Revenue Business Combination, Acquiree's Revenue since Acquisition Date, Actual Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] 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 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 Schedule of Basic and Diluted Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] TESBV Tradeweb Execution Services B.V. [Member] Tradeweb Execution Services B.V. 2021 Share Repurchase Program 2021 Share Repurchase Program [Member] 2021 Share Repurchase Program Subsequent Events [Abstract] Subsequent Events [Abstract] Segment Reporting [Abstract] Segment Reporting [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] 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 Awards Granted To Non-employee Share-Based Payment Arrangement, Nonemployee [Member] Grantee Status [Axis] Grantee Status [Axis] 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. Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Consolidated Entities [Axis] Consolidated Entities [Axis] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common stock, par value (in dollars per share) Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares issued (in shares) Common Stock, Shares, Issued Market Data Market Data Client Sector [Member] The market data client sector. Crypto Asset Holding [Table] Crypto Asset, Holding [Table] Use of Estimates Use of Estimates, Policy [Policy Text Block] Receivable from/payable to brokers and dealers and clearing organizations, net Increase (Decrease) in Receivable from Broker-Dealer and Clearing Organization Occupancy Occupancy Occupancy, Net 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] Schedule of Fair Value Measurement Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Securities Sold Under Agreements to Repurchase Repurchase and Resale Agreements Policy [Policy 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 three and six months ended June 30, 2025 and 2024 Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Insider Trading Arrangements [Line Items] Security Exchange Name Security Exchange Name Interest income Investment Income, Interest and Dividend Institutional Institutional Client Sector [Member] The institutional client sector. Total liabilities Liabilities Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] 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 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 Capitalized Computer Software, Net Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Investments in Available-for-Sale Debt Securities Debt Securities, Available-for-Sale, Premium on Purchased Options [Policy Text Block] Expenses Operating Expenses [Abstract] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] 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] ICDEU ICD Europa [Member] ICD Europa 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 Amortization of pushdown accounting allocation Amortization Period Pushdown Accounting Adjustment Amortization period for pushdown accounting adjustments. 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