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[Member] Represents information related to member Class V Common Stock Common Class V [Member] No definition available Document Information [Line Items] Document Information [Line Items] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Basis of Presentation and Principles of Consolidation and Interim Unaudited Condensed Consolidated Financial Statements Basis of Accounting, Policy [Policy Text Block] Class of Stock [Axis] Class of Stock [Axis] Intangible assets, net Net Intangible Asset, Finite-Lived, after Accumulated Amortization Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Allocation of equity and non-controlling interests upon changes in RSILP ownership Noncash or Part Noncash Acquisition, Reverse Recapitalization Noncash or Part Noncash Acquisition, Reverse Recapitalization Net income attributable to Rush Street Interactive, Inc. – basic Net Income (Loss) Available to Common Stockholders, Basic Accumulated Amortization Intangible Asset, Finite-Lived, Accumulated Amortization Other income (expense) Nonoperating Income (Expense) [Abstract] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Richard Schwartz [Member] Richard Schwartz Recently Adopted Accounting Pronouncements Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Segment Reporting Segment Reporting [Table Text Block] Non- Controlling Interests Noncontrolling Interest [Member] Related Party [Axis] Related and Nonrelated Parties [Axis] Schedule of Accrued Expenses Schedule of Accrued Liabilities [Table Text Block] Segment Reporting, Reconciliation [Abstract] Segment Reporting, Reconciliation [Abstract] Due from affiliates Increase (Decrease) Due from Affiliates Document Period End Date Document Period End Date Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Stockholders' Equity Equity [Text Block] Security Exchange Name Security Exchange Name Treasury stock value Treasury Stock, Common, Value Granted (in USD per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price RSILP Units Rush Street Interactive, LP Units [Member] Represents information pertaining to RSILP Units. Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Operating lease liabilities Operating Lease, Liability, Current Finance lease, right-of-use asset, after accumulated amortization Finance Lease, Right-of-Use Asset, after Accumulated Amortization COMPREHENSIVE LOSS Statement of Comprehensive Income [Abstract] Earnings Per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Earnings Per Share [Abstract] Earnings Per Share [Abstract] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] United States and Canada United States and Canada [Member] United States and Canada Accounting Policies [Table] Accounting Policies [Table] Accounting Policies Total liabilities Liabilities Trading Symbol Trading Symbol Average cost per share (in usd per share) Share Price On Shares Withheld For Tax Withholding Share Price On Shares Withheld For Tax Withholding Other Liabilities Other Liabilities [Table Text Block] Performance-based RSUs Performance-Based Restricted Stock Units [Member] Performance-Based Restricted Stock Units Geographical [Domain] Geographical [Domain] Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment 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] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Company Selected Measure Name Company Selected Measure Name Sale of Stock [Domain] Sale of Stock [Domain] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Weighted Average Number of Shares Outstanding, Diluted, Adjustment [Abstract] Weighted Average Number of Shares Outstanding, Diluted, Adjustment [Abstract] Accounts payable, accrued expenses and other liabilities Increase (Decrease) in Accounts Payable, Accrued Liabilities, And Other Operating Liabilities Increase (Decrease) in Accounts Payable, Accrued Liabilities, And Other Operating Liabilities Accrued administrative expenses Accrued Administrative Expenses, Current Accrued Administrative Expenses, Current Certificates of deposits Other Long-Term Investments Supplemental disclosure of noncash investing and financing activities: Noncash Investing and Financing Items [Abstract] Social gaming Social Gaming [Member] Information pertaining to Social gaming. Issuance of Class A Common Stock and treasury stock under the equity compensation plan, net of shares withheld for employee taxes Noncontrolling Interest, Increase (Decrease) From The Vesting Of Share-Based Equity Grants, Net Of Shares Withheld For Taxes, Percent Noncontrolling Interest, Increase (Decrease) From The Issuance Of Common Stock and Treasury Stock, Net Of Shares Withheld For Taxes, Percent Related Party Transactions [Abstract] Related Party Transactions [Abstract] Cash flows from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Affiliated Land-Based Casinos Affiliated Land Based Casinos [Member] Represents information pertaining to affiliated land-based casinos. Other Other Sundry Liabilities, Noncurrent Due from affiliates Other Receivables, Net, Current Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Weighted average common shares outstanding - diluted (in shares) Weighted average common shares outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Property and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Other Intangible Assets Other Intangible Assets [Member] Award Timing Predetermined Award Timing Predetermined [Flag] Treasury Stock Treasury Stock, Common [Member] Intrinsic value of options exercised Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Share-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Internally Developed Software Software, Internally Developed [Member] Effective tax rates Effective Income Tax Rate Reconciliation, Percent Organization, Consolidation and Presentation of Financial Statements [Abstract] Unvested balance, beginning of period (in USD per shares) Unvested balance, end of period (in USD per shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value All Executive Categories All Executive Categories [Member] Repurchase and retirement of Class A Common Stock Stock Repurchased and Retired During Period, Value Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Depreciation and amortization expense Depreciation Antidilutive Securities [Axis] Antidilutive Securities [Axis] TRA liability Tax Receivable Agreement, Liability Tax Receivable Agreement, Liability Outstanding balance, beginning of period (in USD per share) Outstanding balance, end of period (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Number of units Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, 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[Member] Tax receivable agreement, percentage of net certain tax benefits payable Tax Receivable Agreement, Percentage of Certain Next Tax Benefits Payable Represents the percentage of net income tax savings, sellers are entitled to pay. Common stock, authorized (in shares) Common Stock, Shares Authorized Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Useful life Intangible Asset, Finite-Lived, Useful Life Schedule of Restricted Stock Unit Activity Schedule of Unvested Restricted Stock Units Roll Forward [Table Text Block] Number of units issued (in shares) Sale of Stock, Number of Shares Issued in Transaction Exercise Price Award Exercise Price Cash flows from investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Noncash lease expense Non-Cash Operating Lease Costs Represents the amount of non-cash operating lease cost. Related Party Transaction [Axis] Related Party Transaction [Axis] Segment Reporting [Line Items] Segment Reporting [Line Items] Authorized repurchase amount Share Repurchase Program, Authorized, Amount Unrecognized stock-based compensation expense Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Document Quarterly Report Document Quarterly Report 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] Segments [Domain] Segments [Domain] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Principal payments of finance leases and other financing obligations Finance Lease, Principal Payments, And Other Financing Obligations Finance Lease, Principal Payments, And Other Financing Obligations Total Contractual Obligation Schedule of Future Minimum Payments Under Non-cancelable Terms of Contracts Contractual Obligation, Fiscal Year Maturity [Table Text Block] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equity Component [Domain] Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Proceeds from sale of stock Sale of Stock, Consideration Received on Transaction Total operating costs and expenses Costs and Expenses Adoption Date Trading Arrangement Adoption Date Total stockholders’ equity attributable to Rush Street Interactive, Inc. Beginning of period Ending of period Equity, Attributable to Parent Aggregate fair value of options granted Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Granted in Period, Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Granted in Period, Fair Value Tax distributions to non-controlling interests Payments For Tax Distributions To Noncontrolling Interests Payments For Tax Distributions To Noncontrolling Interests ASSETS Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Accrued operating expenses Accrued Operating Expenses, Current Amount of operating expenses incurred but not yet paid nor invoiced due within one year or the operating cycle if longer. Accounting Policies [Abstract] Accounting Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Risk-free interest rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Insider Trading Policies and Procedures [Line Items] Outstanding balance, beginning of period (in shares) Outstanding balance, end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Accrued Expenses and Other Liabilities Accounts Payable and Accrued Liabilities Disclosure [Text Block] Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Prepaid expenses and other current assets Total Prepaid Expense and Other Assets, Current Deferred income taxes Deferred Income Tax Expense (Benefit) Income Tax [Line Items] Income Tax [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. Interest income, net Interest Income (Expense), Nonoperating Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Number of operating segments Number of Operating Segments Anti-dilutive securities excluded from computation of diluted shares outstanding (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount RSUs Unvested RSUs Restricted Stock Units (RSUs) [Member] Accrued marketing expenses Accrued Marketing Costs, Current Schedule of Anti-dilutive Securities Excluded from Computation of Diluted Shares Outstanding Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Entity Central Index Key Entity Central Index Key All Adjustments to Compensation All Adjustments to Compensation [Member] Equity [Abstract] Equity [Abstract] 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] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Income Statement [Abstract] Income Statement [Abstract] Document Transition Report Document Transition Report Ownership [Axis] Ownership [Axis] Deferred tax assets, net Deferred Income Tax Assets, Net Finance lease liabilities Finance Lease, Liability, Noncurrent Schedule of Income Tax Provision Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Schedule of Intangible Assets, Net Intangible Asset, Finite-Lived [Table Text Block] Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Aggregate fair value of options vested Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value Number of options Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Market-based RSUs Restricted Stock Units, Market Conditions [Member] Restricted Stock Units, Market Conditions Other Commitments [Domain] Other Commitments [Domain] City Area Code City Area Code Accumulated Other Comprehensive Income AOCI Attributable to Parent [Member] Tax receivable agreement liability, non-current Liability For Tax Receivable Agreement, Noncurrent Liability For Tax Receivable Agreement, Noncurrent Document Information [Table] Document Information [Table] All Individuals All Individuals [Member] Summary of Revenue by Geographic Region Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue [Table Text Block] Name Forgone Recovery, Individual Name Weighted-average vesting period of unrecognized stock-based compensation expense Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Weighted-average grant price Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Long-Lived Assets Intangible Asset [Text Block] Statement [Line Items] Statement [Line Items] License and Market Access Commitments License and Market Access Commitments [Member] License and Market Access Commitments Total assets Assets RSU's vested without shares issued (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Shares Not Yet Issued Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Shares Not Yet Issued Entity [Domain] Entity [Domain] Owners Other Than Rush Street Interactive Owners Other Than Rush Street Interactive [Member] Owners Other Than Rush Street Interactive Aggregate number of shares reserved under equity incentive plan (in shares) Common Stock, Capital Shares Reserved for Future Issuance Interest income Interest Income, Nonoperating, Adjusted Interest Income, Nonoperating, Adjusted Weighted average grant price of options granted (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Schedule of Share-based Compensation Expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Share-Based Compensation Share-Based Payment Arrangement [Text Block] From October 1, 2026 to December 31, 2026 Contractual Obligation, to be Paid, Remainder of Fiscal Year Description of Business Nature of Operations [Text Block] Issuance of class A common stock upon RSILP unit exchanges (in shares) Stock Issued During Period, Shares, New Issues PEO PEO [Member] Beginning balance (in shares) Ending balance (in shares) Shares, Outstanding Year ending December 31, 2028 Contractual Obligation, to be Paid, Year Two TRA liability, current Tax Receivable Agreement, Liability, Current Tax Receivable Agreement, Liability, Current Total share-based compensation expense Share-Based Payment Arrangement, Expense Repurchase and retirement of class A common stock (in shares) Stock Repurchased and Retired During Period, Shares Other non-current liabilities Total Other Liabilities, Noncurrent Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Issuance of class A common stock upon exercise of stock options (in shares) Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Issuance of Class A Common Stock upon RSILP Unit Exchanges Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners, Increase (Decrease) from Issuance of Stock Related to Earnout Interest Vested Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners, Increase (Decrease) from Issuance of Stock Related to Earnout Interest Vested Granted (in USD per shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Payables and Accruals [Abstract] Payables and Accruals [Abstract] Intangible Asset, Excluding Goodwill, after Accumulated Amortization [Abstract] Operating lease liabilities Operating Lease, Liability, Noncurrent Accumulated Deficit Retained Earnings [Member] Forfeited (in USD per shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Common stock, outstanding (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Earnings per common share attributable to Rush Street Interactive, Inc. - diluted (in dollars per share) Earnings per class A common share - diluted (in USD per share) Earnings Per Share, Diluted Entity Current Reporting Status Entity Current Reporting Status Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Total cost of shares withheld Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Amortization expense Intangible Asset, Finite-Lived, Amortization Expense Intangible Asset, Finite-Lived [Line Items] Intangible Asset, Finite-Lived [Line Items] Ownership [Domain] Ownership [Domain] Adjustments to reconcile net income to net cash provided by operating activities Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Cash flows from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Revenue Total revenue Revenue from Contract with Customer, Excluding Assessed Tax Conversion of weighted average RSILP units to class A common shares (in shares) Incremental Common Shares Attributable to Dilutive Effect of Conversion of RSILP Units Incremental Common Shares Attributable to Dilutive Effect of Conversion of RSILP Units Deferred royalty liabilities Deferred Royalties, Noncurrent Amount of deferred royalties for which consideration has been received or is receivable, classified as noncurrent. Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Intangible Asset, Finite-Lived, Class [Axis] Intangible Asset, Finite-Lived, Class [Axis] Issuance of Class A Common Stock upon exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Underlying Securities Award Underlying Securities Amount Purchases of short-term investments Payments to Acquire Short-Term Investments Comprehensive income attributable to non-controlling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Revenue Recognition Revenue from Contract with Customer [Text Block] Issuance of Class A Common Stock upon RSILP Unit Exchanges Stock Issued During Period, Value, New Issues Over-Allotment Option Over-Allotment Option [Member] Prepaid expenses Prepaid Expense, Current Players’ liabilities Players Liabilities, Current The amount represents the players liabilities. Segment Reporting [Table] Segment Reporting [Table] Re-issuance of treasury stock under the equity compensation plan Stock Issued Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Sale of Stock [Axis] Sale of Stock [Axis] Other Other Assets, Current Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Income from operations Operating Income (Loss) Current Fiscal Year End Date Current Fiscal Year End Date Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Related Party Transaction [Domain] Related Party Transaction [Domain] Income Tax [Table] Income Tax [Table] The information on income taxes. Time-based RSUs Time-Based Restricted Stock Units [Member] Time-Based Restricted Stock Units 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] Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested Options Forfeited, Number of Shares Tax distributions to non-controlling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Common stock, issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Prepaid Expenses and Other Assets Other Assets Disclosure [Text Block] Treasury stock (in shares) Beginning of period (in shares) Ending of period (in shares) Treasury Stock, Common, Shares Incremental shares from assumed conversion of stock options and restricted stock units (in shares) Incremental Common Shares Attributable to Dilutive Effect of Conversion Of Stock Options And Restricted Stock Units Incremental Common Shares Attributable to Dilutive Effect of Conversion Of Stock Options And Restricted Stock Units Equity Components [Axis] Equity Components [Axis] Players’ receivables Increase (Decrease) in Accounts Receivable Product and Service [Domain] Product and Service [Domain] Class of Stock [Line Items] Class of Stock [Line Items] Cash paid for income taxes Income Tax Paid, after Refund Received Deferred tax asset, valuation allowance Deferred Tax Assets, Valuation Allowance Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Common Class A Common Class A [Member] Entity Interactive Data Current Entity Interactive Data Current Finance lease liabilities Finance Lease, Liability, Current Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Net income attributable to non-controlling interests Net Income (Loss) Attributable to Noncontrolling Interest Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Players’ liabilities Increase (Decrease) In Players Liabilities The increase (decrease) during the reporting period in the amounts in players liabilities. Cumulative income analysis, term Cumulative Income Analysis, Term Cumulative Income Analysis, Term Entity Small Business Entity Small Business Comprehensive income attributable to Rush Street Interactive, Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Sales and marketing Marketing and Advertising Expense Termination Date Trading Arrangement Termination Date Other Commitments [Axis] Other Commitments [Axis] Shares withheld (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation RSG Rush Street Gaming, LLC [Member] Represents the member information pertaining to Rush Street Gaming, LLC. Noncontrolling Interest [Table] Noncontrolling Interest [Table] Sales and marketing Marketing and Advertising Expense, Adjusted Marketing and Advertising Expense, Adjusted Tax impact of equity transactions Additional Paid In Capital, Increase For Tax Impact On Equity Transactions Additional Paid In Capital, Increase For Tax Impact On Equity Transactions Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other current liabilities Total Other Liabilities, Current Other assets Total Other Assets, Noncurrent Other Receivable, after Allowance for Credit Loss, Current, Related Party [Extensible Enumeration] Other Receivable, after Allowance for Credit Loss, Current, Related Party [Extensible Enumeration] Operating lease assets Operating Lease, Right-of-Use Asset, Current Operating Lease, Right-of-Use Asset, Current Document Type Document Type Accrued expenses Total accrued expenses Accrued Liabilities, Current Fair Value as of Grant Date Award Grant Date Fair Value Summary of Significant Accounting Policies and Recent Accounting Pronouncements Significant Accounting Policies [Text Block] Intrinsic value of options exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Expenses relating to related party Operating Costs and Expenses Arrangement Duration Trading Arrangement Duration Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Interest expense Interest Expense, Nonoperating, Adjusted Interest Expense, Nonoperating, Adjusted Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Income (loss) before income taxes Income (Loss) from 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Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] 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] Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Share-based compensation expense Share-Based Payment Arrangement, Noncash Expense Earnings per common share attributable to Rush Street Interactive, Inc - basic (in dollars per share) Earnings per class A common share - basic (in USD per share) Earnings Per Share, Basic Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] Class A Common Stock repurchased 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Schedule of Stock Option Activity Schedule of Stock Options Roll Forward [Table Text Block] Investing activities in Accounts Payable and Accrued Expenses Investing Activities, Included In Accounts Payable And Accrued Expenses, Amount Investing Activities, Included In Accounts Payable And Accrued Expenses, Amount Prepaid Expenses and Other Current Assets Prepaid Expense and Other Assets, Current [Abstract] Company Selected Measure Amount Company Selected Measure Amount Depreciation and amortization Depreciation and amortization expense Depreciation, Depletion and Amortization Entity Address, Address Line Two Entity Address, Address Line Two Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Net income Net income Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Repurchase and retirement of Class A Common Stock Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners, Increase (Decrease) From Repurchase And Retirement Of 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Shares Issued, Value, Share-Based Payment Arrangement, After Forfeiture, Net Of Shares Withheld For Tax Withholding Obligation Shares Issued, Value, Share-Based Payment Arrangement, After Forfeiture, Net Of Shares Withheld For Tax Withholding Obligation Income tax expense (benefit) Income tax expense (benefit) Income Tax Expense (Benefit) Latin America, including Mexico Latin America [Member] Award Timing Method Award Timing Method [Text Block] Retail sports betting Retail Sports Services [Member] Information pertaining to Retail sports services. Net change in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Other taxes payable Other Taxes Payable, Current Other Taxes Payable, Current Net income attributable to Rush Street Interactive, Inc. Net Income (Loss) Attributable to Parent Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Proceeds from exercise of stock options Proceeds from Stock Options Exercised Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Operating and finance lease obligations Lease, Liability Lease, Liability Exercisable (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price RSILP Rush Street Interactive, LP [Member] Rush Street Interactive, LP Mattias Stetz [Member] Mattias Stetz Schedule of Other Assets Schedule of Other Assets [Table Text Block] Shares retired (in shares) Treasury Stock, Shares, Retired Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Related Party [Member]