Business Acquisition [Axis] Business Acquisition [Axis] DW SEF Dw Sef Llc [Member] DW SEF LLC (DW SEF) is a swap execution facility regulated by the Commodities Future Trading Commission. Revision of Prior Period [Axis] Revision of Prior Period [Axis] TWL Tradeweb Llc [Member] Tradeweb LLC (TWL) is a registered broker-dealer under the Securities Exchange Act of 1934, a member of the Financial Industry Regulatory Authority, a registered independent introducing broker with the Commodities Future Trading Commission and a member of the National Futures Association. Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Total future lease payments Lessee, Operating Lease, Liability, to be Paid Translation of Foreign Currency and Foreign Currency Forward Contracts Foreign Currency Transactions and Translations Policy [Policy Text Block] Net income Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Credit loss expense (reversal) Accounts Receivable, Credit Loss Expense (Reversal) Related Party Transactions [Abstract] Related Party Transactions [Abstract] Deferred tax asset Deferred Income Tax Assets, Net Letter of credit issued Long-Term Debt, Gross Income Tax Disclosure [Table] Income Tax Disclosure [Table] Disclosure of information pertaining to income taxes. Entity Address, Postal Zip Code Entity Address, Postal Zip Code Wholesale Wholesale Client Sector [Member] The wholesale client sector. Schedule of Outstanding Shares Of Common Stock Schedule of Stockholders Equity [Table Text Block] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Unsettled share repurchases included in other liabilities Unsettled Share Repurchases Included In Other Liabilities Unsettled Share Repurchases Included In Other Liabilities Business Combinations Business Combinations 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. Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Foreign currency forward contracts Foreign Exchange Contract [Member] EURIBOR EURIBOR [Member] EURIBOR Debt instrument floor rate Debt Instrument Floor Rate The Percentage of floor rate under debt instrument. Additional paid-in capital Additional Paid in Capital Percentage of amount of U.S. federal, state and local income or franchise tax savings Tax Receivable Agreement, Percentage Of Amount Of Federal, State And Local Income Or Franchise Tax Savings The percentage of amount of U.S. federal, state and local income or franchise tax savings under the tax receivable agreement. Basis variable spread rate Debt Instrument, Basis Spread on Variable Rate Debt Instrument, Basis Spread on Variable Rate Tax receivable agreement liability adjustment Tax Receivable Agreement Liability, Adjustment Tax Receivable Agreement Liability, Adjustment Regulatory Capital Requirements Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Statistical Measurement [Domain] Statistical Measurement [Domain] Depreciation expense Depreciation Schedule of Revenue and Long-Lived Assets by Geographic Location Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Long-lived assets Long-Lived Assets Other (income) loss, net Other Noncash Income (Expense) Effect of exchange rate changes on cash, cash equivalents and restricted cash Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Dividends payable Dividends Payable Aggregate value of share repurchase Treasury Stock, Value, Acquired, Cost Method 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 Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Weighted average volatility rate (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate Antidilutive shares (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount TWEU Tradeweb Eu Bv [Member] Tradeweb EU B.V. (TWEU) is a trading venue and approved publication arrangement regulated by the Netherlands Authority for the Financial Markets. Subsequent Event Type [Axis] Subsequent Event Type [Axis] Fed Funds Effective Rate Fed Funds Effective Rate Overnight Index Swap Rate [Member] Equity Component [Domain] Equity Component [Domain] Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table] Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Fair Value, Nonrecurring Fair Value, Nonrecurring [Member] Total assets measured at fair value Assets, Fair Value Disclosure Ownership [Axis] Ownership [Axis] Securities sold under agreements to repurchase Increase (Decrease) in Financial Instruments Sold, Not yet Purchased Related Party [Domain] Related Party [Domain] Fair Value Measurement Fair Value Measurement, Policy [Policy Text Block] Reclassification [Table] Reclassification [Table] Hedging Designation [Domain] Hedging Designation [Domain] SONIA Sterling Over Night Index Average [Member] Sterling Over Night Index Average Supplemental disclosure of cash flow information Supplemental Cash Flow Information [Abstract] Derivative Instrument [Axis] Derivative Instrument [Axis] PSUs Phantom Share Units (PSUs) [Member] Noncontrolling Interest [Abstract] Noncontrolling Interest [Abstract] Common stock, conversion ratio Common Stock Conversion Ratio Common Stock Conversion Ratio Revision of Prior Period, Reclassification, Adjustment Revision of Prior Period, Reclassification, Adjustment [Member] Remainder of 2023 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Entity Address, State or Province Entity Address, State or Province Quoted Prices in active Markets for Identical Assets (Level 1) Quoted Prices in active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Refinitiv Direct Owner Refinitiv Direct Owner [Member] Refinitiv Direct Owner Award Type [Axis] Award Type [Axis] Equity Members' Equity [Abstract] Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities LLC Interests Limited Liability Company Units [Member] Limited Liability Company Units 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 Adjustments to reconcile net income to net cash provided by (used in) operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing [Axis] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Excess Financial Resources Futures Commission Merchant, Commodity Exchange Act, Excess Net Capital Deferred tax asset Other Noncash Income Tax Expense Legal Entity [Axis] Legal Entity [Axis] Total liabilities Liabilities Number of share owned (in shares) Number Of Share Owned Number of share owned. Geographical [Axis] Geographical [Axis] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Number of LLC Interests held by Tradeweb Markets Inc. (in shares) Minority Interest Number Of Interests Held By Parent The parent entity's interest in the subsidiary. Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Issuance of common stock from equity incentive plans Stock Issued During Period, Value, New Issues Receivable and due from affiliates Receivable and due from affiliates Due from Affiliates Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Allowance for Credit Losses Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block] Risks and Uncertainties [Abstract] Risks and Uncertainties [Abstract] Revolving credit facility Revolving Credit Facility [Member] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Document Type Document Type Useful life Property, Plant and Equipment, Useful Life Reconciliation of cash, cash equivalents and restricted cash as shown on the statements of financial condition: Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract] Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilities [Member] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Product and Service [Domain] Product and Service [Domain] Entity Shell Company Entity Shell Company Class B Common Stock Common Class B [Member] Deferred taxes Deferred Income Tax Expense (Benefit) Tax Receivable Agreement Tax Receivable Agreement Liability Disclosure [Text Block] The entire disclosure of tax receivable agreement liability. Deferred revenue Increase (Decrease) in Deferred Revenue 2024 Lessee, Operating Lease, Liability, to be Paid, Year One (Increase) decrease in operating assets: Increase (Decrease) in Operating Assets [Abstract] Affiliated Entity Affiliated Entity [Member] Payments on tax receivable agreement liability Payments on Tax Receivable Agreement, Liability Payments on Tax Receivable Agreement, Liability Subsequent Event Subsequent Event [Member] Schedule of Recognized Revenue and Remaining Deferred Revenue Balance Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Deposits with Clearing Organizations Deposits With Clearing Organizations [Policy Text Block] Disclosure of accounting policy for deposits with clearing organizations. Document Period End Date Document Period End Date Class C Common Stock Common Class C [Member] TESL Tradeweb Execution Services Limited [Member] Tradeweb Execution Services Limited Conversion ratio Noncontrolling Interest, Conversion Ratio The conversion ratio of shares of non-controlling interests. Total assets Assets Earnings per share attributable to Tradeweb Markets Inc. Class A and B common stockholders: Earnings Per Share [Abstract] Income Statement Location [Axis] Income Statement Location [Axis] Schedule of Fair Value Measurement Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Schedule of the Ownership Interest in Noncontrolling Interest Schedule Of Ownership Interest In Noncontrolling Interest [Table Text Block] Tabular disclosure of ownership interest in noncontrolling interest. Accrued compensation Employee-related Liabilities Tax Receivable Agreement Tax Receivable Agreement No definition available. Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Accounting Policies [Abstract] Accounting Policies [Abstract] Share repurchase program, amount authorized Stock Repurchase Program, Authorized Amount Schedule of Financial Resources and Liquid Financial Resources Futures Commission Merchant, Minimum Financial Requirement [Table Text Block] Schedule of Regulatory Capital Requirements Schedule Of Regulatory Capital Requirements [Table Text Block] Tabular disclosure of the regulatory capital requirements and regulatory capital for entities subject to regulation. Income before taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Earnings Per Share Earnings Per Share [Text Block] Non-Controlling Interests Noncontrolling Interest Disclosure [Text Block] Payable and due to affiliates Payable and due to affiliates Payable and due to affiliates – Foreign currency forward contracts Due to Affiliate Customer [Axis] Customer [Axis] Receivable and due from affiliates/payable and due to affiliates, net Increase (Decrease) Due from Affiliates Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Related Party Transactions Related Party Transaction [Line Items] Award Type [Domain] Award Type [Domain] Schedule of Financial Instruments Not Measured at Fair Value Fair Value, by Balance Sheet Grouping [Table Text Block] Derivative Contract [Domain] Derivative Contract [Domain] Entity Registrant Name Entity Registrant Name Issuance of common stock from equity incentive plans (in shares) Stock Issued During Period, Shares, New Issues Number of LLC Interests held by non-controlling interests (in shares) Minority Interest Number Of Interests Held By Noncontrolling Owners The equity interest of noncontrolling shareholders. Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Subsequent Events Subsequent Events [Text Block] Software Development Costs Software Development [Member] Accounts payable, accrued expenses and other liabilities Accounts Payable and Accrued Liabilities Entity Address, City or Town Entity Address, City or Town Securities Sold Under Agreements to Repurchase Repurchase and Resale Agreements Policy [Policy Text Block] Expenses Operating Expenses [Abstract] Total equity Beginning balance Ending balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Pushdown Accounting Consolidation, Policy [Policy Text Block] Adjustments to non-controlling interests Minority Interest Increase Decrease From Adjustments Amount of increase (decrease) in noncontrolling interest from adjustments. Minimum Minimum [Member] Non-controlling interests Stockholders' Equity Attributable to Noncontrolling Interest Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Entity Emerging Growth Company Entity Emerging Growth Company Occupancy Occupancy, Net Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Contract with Customer, Basis of Pricing [Domain] Contract with Customer, Basis of Pricing [Domain] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Trading Symbol Trading Symbol Entity File Number Entity File Number 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. Average price per share (in dollars per share) Treasury Stock Acquired, Average Cost Per Share 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. Credit Risk Allowance for Credit Losses [Text Block] Adjusted For Refinitiv Transaction Adjusted For Refinitiv Transaction [Member] Reflects a new basis of accounting resulting from the Refinitiv transaction. Performance period Share-Based Compensation Arrangement by Share-Based Payment Award, Performance Period Share-Based Compensation Arrangement by Share-Based Payment Award, Performance Period Title of Individual [Axis] Title of Individual [Axis] Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period RSUs Restricted Stock Units (RSUs) [Member] Entity Information [Line Items] Entity Information [Line Items] Effective tax rate Effective Income Tax Rate Reconciliation, Percent Use of Estimates Use of Estimates, Policy [Policy Text Block] Cash equivalents – Money market funds Cash and Cash Equivalents, Fair Value Disclosure Restricted Cash Equivalents [Abstract] Restricted Cash Equivalents [Abstract] Remaining percentage of tax benefits Tax Receivable Agreement Remaining Percentage of Amount of Federal State and Local Income or Franchise Tax Savings The remaining percentage of amount of U.S. federal, state and local income or franchise tax savings under the tax receivable agreement. Subsequent Events [Abstract] Subsequent Events [Abstract] Retirement notice, term Retirement Notice, Term Retirement Notice, Term Accounts payable, accrued expenses and other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Limited Liability Company (LLC) Members' Equity [Abstract] Limited Liability Company (LLC) Members' Equity [Abstract] Income Taxes Income Tax Disclosure [Text Block] Increase (decrease) in operating liabilities: Increase (Decrease) in Operating Liabilities [Abstract] Amortization expense Amortization of Intangible Assets Credit adjustment spread Debt Instrument, Credit Adjustment Spread Debt Instrument, Credit Adjustment Spread Basic (in dollars per share) Earnings per share - Basic (in dollars per share) Earnings Per Share, Basic 2026 Lessee, Operating Lease, Liability, to be Paid, Year Three Deposits with clearing organizations Deposits with clearing organizations Deposits with Clearing Organizations and Others, Securities Business Segment and Geographic Information Revenues from External Customers and Long-Lived Assets [Line Items] Change in Contract with Customer Change In Contract with Customer, Liability [Roll Forward] Change In Contract with Customer, Liability Total stockholders’ equity attributable to Tradeweb Markets Inc. Stockholders' Equity Attributable to Parent Non-employee director Director [Member] Ownership [Domain] Ownership [Domain] Entity Interactive Data Current Entity Interactive Data Current Non-Controlling Interests Noncontrolling Interest [Line Items] Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Furniture, Equipment, Purchased Software and Leasehold Improvements Furniture Equipment And Purchased Software [Member] Furniture, equipment and purchased software. Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Numerator: Net Income (Loss) Attributable to Parent [Abstract] Cash equivalents – Money market funds Money Market Funds [Member] Share-based payment arrangement, accelerated cost Share-Based Payment Arrangement, Accelerated Cost Award Date [Domain] Award Date [Domain] Retained Earnings Retained Earnings [Member] Business Segment and Geographic Information Segment Reporting Information [Line Items] Total LLC Interests outstanding Minority Interest Total Ownership Percentage The total ownership interest on noncontrolling interest expressed as a percentage. Other Stockholders Other Stockholders [Member] Other Stockholders Common Stock Common Stock [Member] Schedule of Total Stock-based Compensation Expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Share repurchases pursuant to share repurchase programs Payments for Repurchase of Common Stock Class of Stock [Axis] Class of Stock [Axis] Income Tax Income Tax, Policy [Policy Text Block] Statement [Table] Statement [Table] Document Quarterly Report Document Quarterly Report Expenses Interest Income, Securities, Operating, by Taxable Status [Abstract] Statistical Measurement [Axis] Statistical Measurement [Axis] Common stock repurchased (in shares) Treasury Stock, Shares, Acquired Total Fair Value Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Less: Foreign currency translation adjustments attributable to non-controlling interests Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest Retained earnings Retained Earnings (Accumulated Deficit) Accounts receivable, net of allowance for credit losses of $152 and $129 at March 31, 2023 and December 31, 2022, 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. Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Equity Components [Axis] Equity Components [Axis] Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract] Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract] Related Party Transactions Related Party Transactions Disclosure [Text Block] Stock-based compensation expense under the plan APIC, Share-Based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition Revision of Prior Period [Domain] Revision of Prior Period [Domain] Document Fiscal Year Focus Document Fiscal Year Focus Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Statement [Line Items] Statement Statement [Line Items] Liquid Financial Assets Liquid Financial Assets Liquid financial assets calculated under the Commodity Exchange Act. Financial Resources Futures Commission Merchant, Commodity Exchange Act, Adjusted Net Capital Deferred Offering Costs Deferred Charges, Policy [Policy Text Block] Variable Rate [Domain] Variable Rate [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Required Financial Resources Futures Commission Merchant, Commodity Exchange Act, Required Net Capital Loss Contingencies [Table] Loss Contingencies [Table] Lease right-of-use assets Operating Lease, Right-of-Use Asset Share repurchases pursuant to share repurchase programs Stock Repurchased During Period, Value Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Equity Investments Without Readily Determinable Fair Values Equity Securities without Readily Determinable Fair Value [Policy Text Block] Receivable from and Payable to Broker and Dealers and Clearing Organizations Industry-Specific Policies, Broker-Dealer [Policy Text Block] Granted in period, fair value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Granted in Period, Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Granted in Period, Fair Value Document Transition Report Document Transition Report Local Phone Number Local Phone Number Operating income Operating Income (Loss) Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Deposits with clearing organizations Increase (Decrease) in Deposit Assets Equity investment without readily determinable fair values Equity Securities without Readily Determinable Fair Value, Amount Accounts receivable Accounts Receivable, Related Parties Weighted average shares outstanding: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Common stock, shares outstanding (in shares) Common stock beginning balance (in shares) Common stock ending balance (in shares) Common Stock, Shares, Outstanding Goodwill Goodwill Shares contributed by refinitiv owner (in shares) Stock Contributed During Period Acquiree Majority Owner Stock Contributed During Period Acquiree Majority Owner Total Liabilities, Fair Value Disclosure Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] TWD Tradeweb Direct Llc [Member] Tradeweb Direct LLC (TWD) is a registered broker-dealer under the Securities Exchange Act of 1934, and a member of the Financial Industry Regulatory Authority. Share repurchases pursuant to the Share Repurchase Program (in shares) Stock Repurchased During Period, Shares Required Liquid Financial Assets Required Liquid Financial Assets Amount of liquid financial assets required to be maintained under the Commodity Exchange Act. 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 Provision for income taxes Income Tax Expense (Benefit) Geographical [Domain] Geographical [Domain] Furniture, Equipment, Purchased Software and Leasehold Improvements Property, Plant and Equipment, Policy [Policy Text Block] Deferred tax liability Deferred Income Tax Liabilities, Net One Month Secured Overnight Financing Rate One Month Secured Overnight Financing Rate [Member] One Month Secured Overnight Financing Rate Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share 2027 Lessee, Operating Lease, Liability, to be Paid, Year Four Income Statement [Abstract] Income Statement [Abstract] Additional Paid-In Capital Additional Paid-in Capital [Member] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Document Fiscal Period Focus Document Fiscal Period Focus Awarded during 2023 Awarded During 2023 [Member] Awarded During 2023 Derivative [Line Items] Derivative [Line Items] 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 Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Intangible Assets Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] Tradeweb Markets Inc Tradeweb Markets Inc [Member] Tradeweb Markets Inc., the reporting entity. Establishment of liabilities under tax receivable agreement Liabilities Assumed Expected term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Commitments and Contingencies Loss Contingencies [Line Items] Deferred revenue Contract with Customer, Liability, Related Parties Amount of obligation to transfer good or service to related parties for which consideration has been received or is receivable. Software Development Costs Internal Use Software, Policy [Policy Text Block] General and administrative General and administrative Other General and Administrative Expense Common stock Common Stock, Value, Issued Bank Stockholders Bank Stockholders [Member] Information relating to the Bank Stockholders. Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Tax receivable agreement liability and deferred taxes arising from LLC Interest ownership exchanges and the issuance of common stock from equity incentive plans Adjustments to Additional Paid in Capital Tax Receivable Agreement Liability and Deferred Taxes Reorganization Transaction and IPO Amount of decrease to additional paid in capital (APIC) resulting from tax receivable agreement liability and deferred taxes arising from the reorganization transactions and IPO. Weighted-average grant-date fair value (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Other income (loss), net Other Operating Income (Expense), Net Change from net income attributable to Tradeweb Markets Inc. and transfers (to) from non-controlling interests Net Income Attributable To Parent And Transfers (To) From Noncontrolling Interest The amount of net income (loss) attributable to parent and transfers (to) from noncontrolling interests. Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] TEL Tradeweb Europe Limited [Member] Tradeweb Europe Limited (TEL) is a Multilateral Trading Facility regulated by the Financial Conduct Authority in the UK, which maintains branches in Asia which are regulated by certain Asian securities regulators. Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Net Income Per Share Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Beginning of period End of period Cash, cash equivalents and restricted cash shown in the statement of cash flows Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Foreign currency translation adjustments, with no tax benefit for each of the three months ended March 31, 2023 and 2022 Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Less: Net income attributable to non-controlling interests Less: Net income attributable to non-controlling interests Net Income (Loss) Attributable to Noncontrolling Interest Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Net income attributable to outstanding shares of Class A and Class B common stock - Basic Net Income (Loss) Available to Common Stockholders, Basic Foreign currency forward contracts – Gross notional amount Foreign Exchange Forward [Member] Proceeds from stock-based compensation exercises Proceeds from Stock Options Exercised Common stock, shares issued (in shares) Common Stock, Shares, Issued Furniture, equipment, software and leasehold improvement additions included in accounts payable Capital Expenditures Incurred but Not yet Paid Foreign currency transaction loss, before tax Foreign Currency Transaction Gain (Loss), before Tax Income Statement Location [Domain] Income Statement Location [Domain] Fair Value of Financial Instruments Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Amendment Flag Amendment Flag Useful life of intangible assets Finite-Lived Intangible Asset, Useful Life Refinitiv Refinitiv [Member] Refinitiv, formerly the Thomson Reuters Financial & Risk Business. Unsettled stock-based compensation exercises included in other assets Unsettled Stock-Based Compensation Exercises Included In Other Assets Unsettled Stock-Based Compensation Exercises Included In Other Assets Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Professional fees Professional fees Professional Fees Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax Comprehensive income attributable to Tradeweb Markets Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Subscription fees Subscription fees Subscription Fee Revenue [Member] Subscription fee revenue from granting access to institutional investors to the entity's electronic marketplaces. Schedule of Information Regarding Revenue by Client Sector Schedule of Segment Reporting Information, by Segment [Table Text Block] Entity Current Reporting Status Entity Current Reporting Status Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Accrued compensation Increase (Decrease) in Employee Related Liabilities Additional adjustment Debt Instrument, Adjustment In Addition To Credit Adjustment Spread Debt Instrument, Adjustment In Addition To Credit Adjustment Spread Nonrecurring Adjustment [Axis] Nonrecurring Adjustment [Axis] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] CEO Chief Executive Officer [Member] Initial term of lease Lessee, Operating Lease, Term of Contract Tradeweb Markets LLC TradeWeb Markets Llc [Member] Tradeweb Markets LLC. Schedule of Balances From Transactions with Affiliates Included in the Consolidated Statements Schedule of Related Party Transactions [Table Text Block] Derivative [Table] Derivative [Table] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Other assets – Memberships in clearing organizations Receivables from Clearing Organizations Variable Variable Pricing [Member] Contract with customer in which amount of consideration is based on variable components such as transaction based fees. Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Liabilities Liabilities [Abstract] Furniture, equipment, purchased software and leasehold improvements, net of accumulated depreciation and amortization Property, Plant and Equipment, Net Employee compensation and benefits Employee compensation and benefits Labor and Related Expense Entities [Table] Entities [Table] 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 Options Share-Based Payment Arrangement, Option [Member] Title of Individual [Domain] Title of Individual [Domain] Dividends Dividends Technology and communications Technology and communications Communications and Information Technology Fixed Fixed-Price Contract [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Other assets Other Assets Related Parties Other assets from related parties. Common Stock, shares authorized (in shares) Common Stock, Shares Authorized Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Realized and unrealized gains (losses) on derivative contracts Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Maximum Maximum [Member] Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax 2019 Omnibus Equity Incentive Plan Omnibus2019 Equity Incentive Plan [Member] Represents the information pertaining to omnibus 2019 equity incentive plan. Class A Common Stock Common Class A [Member] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Income taxes paid, net of (refunds) Income Taxes Paid, Net Revenue recognized that was previously deferred Contract with Customer, Liability, Revenue Recognized Entity Small Business Entity Small Business Measurement Frequency [Domain] Measurement Frequency [Domain] Number of reporting units Number of Reporting Units Distributions to non-controlling interests Payments Of Capital Distribution To Noncontrolling Interest Amount of cash outflow in the form of capital distribution to noncontrolling interests. Dividends (in dollars per share) Common Stock, Dividends, Per Share, Declared Revenues Revenue: Revenues [Abstract] Distributions to non-controlling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Restricted cash Restricted cash Restricted Cash Significant Accounting Policies Significant Accounting Policies [Text Block] Unrecognized compensation expense Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Revenues Disaggregation of Revenue [Abstract] DW Dealerweb [Member] Dealerweb Inc. (DW) is a registered broker-dealer under the Securities Exchange Act of 1934, a member of the Financial Industry Regulatory Authority, a registered independent introducing broker with the Commodities Future Trading Commission and a member of the National Futures Association. 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 Nonrecurring Adjustment [Domain] Nonrecurring Adjustment [Domain] Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Accounts receivable Increase (Decrease) in Accounts Receivable Title of 12(b) Security Title of 12(b) Security Organization Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Consolidated Entities [Axis] Consolidated Entities [Axis] Ownership percentage, continuing LLC Owners Number of LLC Interests held by non-controlling interests Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Total expenses Operating expenses Costs and Expenses Subsequent Event [Line Items] Subsequent Event [Line Items] New billings Contract With Customer Liability, New Billings Amount of deferred revenue recognized for new billing arising during the current reporting period. Reclassification [Line Items] Reclassification [Line Items] Lease liabilities Operating Lease, Liability Business Segment and Geographic Information Segment Reporting Disclosure [Text Block] Stock-Based Compensation Share-Based Payment Arrangement [Policy Text Block] Selling, General and Administrative Expenses Selling, General and Administrative Expenses [Member] Noncontrolling Interest [Table] Noncontrolling Interest [Table] Class C and Class D Common Stock Class C and Class D Common Stock [Member] Class C and Class D Common Stock Liabilities and Equity Liabilities and Equity [Abstract] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Awarded during 2022 and prior Awarded During 2022 And Prior [Member] Awarded During 2022 And Prior Excess Liquid Financial Assets Excess Liquid Financial Assets The amount by which actual liquid financial assets exceeds (does not exceed) required liquid financial assets under the Commodity Exchange Act 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 Restricted Cash Restricted Assets Disclosure [Text Block] Other assets Increase (Decrease) in Other Operating Assets Total LLC Interests outstanding (in shares) Minority Interest Total Number Of Interests The total number of shares of the subsidiary. Hedging Designation [Axis] Hedging Designation [Axis] Class D Common Stock Common Class D [Member] Classification of common stock that has different rights than provided to other classes of common stock, representing interest in a corporation. Entity Filer Category Entity Filer Category 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 U.S. UNITED STATES TWJ Tradeweb Japan Kk [Member] Tradeweb Japan K.K. (TWJ) is a security house regulated by the Japanese Financial Services Agency and the Japan Securities Dealers Association. Accounts payable, accrued expenses and other liabilities Accounts Payable, Accrued Expenses and Other Liabilities Related Parties Accounts Payable, Accrued Expenses and Other Liabilities Related Parties Total stock-based compensation expense Share-Based Payment Arrangement, Expense Non-cash investing and financing activities Noncash Investing and Financing Items [Abstract] Commitments and Contingencies Commitments and Contingencies Security Exchange Name Security Exchange Name Gross notional amount Derivative, Notional Amount Preferred stock, $0.00001 par value; 250,000,000 shares authorized; none issued or outstanding Preferred Stock, Value, Issued Letters of credit outstanding Letters of Credit Outstanding, Amount Furniture, Equipment, Purchased Software and Leasehold Improvements Property, Plant and Equipment [Line Items] Total revenue Total revenue Revenues Revenue from Contract with Customer, Excluding Assessed Tax Activities related to exchanges of LLC Interests (in shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Refinitiv market data fees Market Data Revenue [Member] Market data revenue earned from the sale of market data to Refinitiv, which redistributes the data. Includes real-time market data fees and historical data sets. Voting power percentage Voting power percentage Voting power percentage. Cover [Abstract] Leases Lessee, Leases [Policy Text Block] Significant Unobservable Inputs (Level 3) Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Equity Settled Performance Based Restricted Stock Units Equity Settled Performance Based Restricted Stock Units [Member] Equity Settled Performance Based Restricted Stock Units [Member] Impairment of goodwill Goodwill, Impairment Loss Withholding taxes payable relating to stock-based compensation settlements included in accrued compensation Noncash Financing Activities, Withholding Taxes Payable Relating to Stock-based Compensation Settlements Included in Accrued Compensation Noncash Financing Activities, Withholding Taxes Payable Relating to Stock-based Compensation Settlements Included in Accrued Compensation Depreciation and amortization Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Stockholders' Equity and Stock-Based Compensation Plans Share-Based Payment Arrangement [Text Block] Accounts receivable, allowance for credit losses Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss Tax receivable agreement liability Tax Receivable Agreement Liability The carrying amount as on the balance sheet date of tax receivable agreement liability. Other assets Other Assets Revenue Revenue from Contract with Customer [Text Block] Segment Reporting [Abstract] Segment Reporting [Abstract] Regulatory Capital Regulatory Capital Regulatory capital as calculated for each entity under applicable regulations. Non- Controlling Interests Noncontrolling Interest [Member] Risk free interest rate (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Net interest income (expense) Interest Income (Expense), Net Award Date [Axis] Award Date [Axis] Payroll taxes paid for stock-based compensation Payment, Tax Withholding, Share-Based Payment Arrangement Total liabilities and equity Liabilities and Equity Revolving credit facility, term Debt Instrument, Term Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Related Party [Axis] Related Party [Axis] Stock repurchase program, remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Dilutive securities (in shares) Dilutive effect (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements International Non-US [Member] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Revenue recognized Contract With Customer, Liability, Revenue Recognized Including New Billings Contract With Customer, Liability, Revenue Recognized Including New Billings Significant Observable Inputs (Level 2) Significant Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Current Fiscal Year End Date Current Fiscal Year End Date Less imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Net income attributable to outstanding shares of Class A and Class B common stock - Diluted Net Income (Loss) Available to Common Stockholders, Diluted Intangible Assets Finite-Lived Intangible Assets [Line Items] Regulatory Capital Requirements Regulatory Capital Requirements [Text Block] The entire disclosure of capital requirements and required financial resources under applicable regulations. Diluted (in dollars per share) Earnings per share - Diluted (in dollars per share) Earnings Per Share, Diluted Intangible assets, net of accumulated amortization Intangible Assets, Net (Excluding Goodwill) Stock split ratio, common stock Stockholders' Equity Note, Stock Split, Conversion Ratio Maximum contractual term Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Offering costs incurred Payments of Stock Issuance Costs Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Four Lessee, Operating Lease, Liability, to be Paid, after Year Four Ownership interest Number of LLC Interests held by Tradeweb Markets Inc. Noncontrolling Interest, Ownership Percentage by Parent Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] 2025 Lessee, Operating Lease, Liability, to be Paid, Year Two Less: Distributed and undistributed earnings allocated to unvested RSUs and unsettled vested PRSUs Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Commitment fee, percentage Line of Credit Facility, Commitment Fee Percentage Schedule of Derivative Values Schedule of Derivative Instruments [Table Text Block] Amortization expense Amortization Schedule of Maturity of Lease Liabilities and Future Minimum Lease Payments Lessee, Operating Lease, Liability, Maturity [Table Text Block] Entity Address, Address Line One Entity Address, Address Line One Receivable from/payable to brokers and dealers and clearing organizations, net Increase (Decrease) in Receivable from Broker-Dealer and Clearing Organization Stock-based compensation expense capitalized Share-Based Payment Arrangement, Amount Capitalized Deferred revenue Deferred revenue balance - beginning of period Deferred revenue balance - ending of period Contract with Customer, Liability Regulatory Capital Requirement Regulatory Capital Requirement Amount of regulatory capital required to be maintained for each entity under applicable regulations. Product and Service [Axis] Product and Service [Axis] Payable to brokers and dealers and clearing organizations Payable to brokers and dealers and clearing organizations Broker-Dealer, Payable to Other Broker-Dealer and Clearing Organization Number of claims dismissed Loss Contingency, Claims Dismissed, Number Class of Stock [Domain] Class of Stock [Domain] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] TWM LLC TWM LLC [Member] TWM LLC Subsequent Event [Table] Subsequent Event [Table] Schedule of Affiliates were Included in the Consolidated Statements of Income Schedule Of Related Party Transactions Affiliates [Table Text Block] Schedule Of Related Party Transactions Affiliates. Weighted average unvested RSUs and unsettled vested PRSUs that were considered participating securities (in shares) Participating Securities, Distributed and Undistributed Earnings (Loss), Shares Participating Securities, Distributed and Undistributed Earnings (Loss), Shares Entity Tax Identification Number Entity Tax Identification Number Number of shares authorized (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized TESBV Tradeweb Execution Services B.V. [Member] Tradeweb Execution Services B.V. Shares redeemed (in shares) Stock Redeemed or Called During Period, Shares Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Schedule of Breakdown of Revenues Between Fixed and Variable Revenues Disaggregation of Revenue [Table Text Block] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Stock-based compensation expense under the Option Plan APIC, Share-Based Payment Arrangement, Option, Increase for Cost Recognition Consolidated Entities [Domain] Consolidated Entities [Domain] Number of shares withheld (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Schedule of the Impact on Equity Due to Changes in the Company’s Ownership Interest in Noncontrolling Interest Schedule Of Impact On Equity Due To Changes In The Company’s Ownership Interest In Noncontrolling Interest [Table Text Block] Tabular disclosure of impact on equity due to changes in the Company’s ownership interest in noncontrolling interest. Other Other Other fees Financial Service, Other [Member] Net increase (decrease) in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Market Data Market Data Client Sector [Member] The market data client sector. Entity Central Index Key Entity Central Index Key Measurement Frequency [Axis] Measurement Frequency [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Payroll taxes paid for stock-based compensation Share-based payment arrangement, decrease for tax withholding obligation Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Entity [Domain] Entity [Domain] Software development costs, net of accumulated amortization Capitalized Computer Software, Net Net transfers (to) from non-controlling interests Transfers From (To) Noncontrolling Interests Amount of net transfers from (to) non controlling interest. City Area Code City Area Code Assets Assets [Abstract] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Institutional Institutional Client Sector [Member] The institutional client sector. Capitalized software development costs Payments for Software Dividends Payments of Ordinary Dividends Receivable from brokers and dealers and clearing organizations Receivable from brokers and dealers and clearing organizations Receivable from Broker-Dealer and Clearing Organization Income Tax Disclosure [Line Items] Income Tax Disclosure [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations [Abstract] Total liabilities measured at fair value Financial Liabilities Fair Value Disclosure Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Retail Retail Client Sector [Member] The retail client sector. Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Public Investors Public Investors [Member] This member stands for public investors, collectively. Variable Rate [Axis] Variable Rate [Axis] Amortization of pushdown accounting allocation Amortization Period Pushdown Accounting Adjustment Amortization period for pushdown accounting adjustments. Cash and restricted cash Restricted Cash and Cash Equivalents, Fair Value Disclosure Restricted Cash and Cash Equivalents, Fair Value Disclosure Purchases of furniture, equipment, software and leasehold improvements Payments to Acquire Property, Plant, and Equipment Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Tax liability Accrued Income Taxes Schedule of Basic and Diluted Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Foreign currency translation adjustment, tax benefit Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Customer [Domain] Customer [Domain] Secured Overnight Financing Rate Secured Overnight Financing Rate [Member] Secured Overnight Financing Rate Tax receivable agreement, payment term Tax Receivable Agreement, Term Tax Receivable Agreement, Term