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      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
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      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>1179406</BOYAmt>
        <EOYAmt>1249151</EOYAmt>
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      <ReconcilationRevenueExpnssAmt>17991</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>51754</NetUnrlzdGainsLossesInvstAmt>
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      <InfoInScheduleOPartXIIInd>X</InfoInScheduleOPartXIIInd>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
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        <CurrentTaxYearMinus2YearsAmt>550432</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>568057</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>578890</CurrentTaxYearAmt>
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        <CurrentTaxYearMinus2YearsAmt>550432</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>568057</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>578890</CurrentTaxYearAmt>
        <TotalAmt>2199265</TotalAmt>
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      <SubstantialContributorsTotAmt>861605</SubstantialContributorsTotAmt>
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        <CurrentTaxYearMinus3YearsAmt>228</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>5303</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>14760</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>8053</CurrentTaxYearAmt>
        <TotalAmt>28560</TotalAmt>
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      <FootnoteTextInd>X</FootnoteTextInd>
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      <NetUnrealizedGainsInvstAmt>51754</NetUnrealizedGainsInvstAmt>
      <DonatedServicesAndUseFcltsAmt>90000</DonatedServicesAndUseFcltsAmt>
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      <DonatedServicesUseFcltsAmt>90000</DonatedServicesUseFcltsAmt>
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      <InvestmentExpensesNotIncld2Amt>150</InvestmentExpensesNotIncld2Amt>
      <ExpensesNotRptFinclStmtAmt>150</ExpensesNotRptFinclStmtAmt>
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        <FormAndLineReferenceDesc>Part X, Line 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>Operation Walk Chicago was granted an exemption from federal income tax by the Internal Revenue Service pursuant to the provisions of Internal Revenue Code Section 501(c)(3). The Organization qualifies for the charitable contribution deduction under Section 170(b)(1)(A)(vi) and has been classified as an organization that is not a private foundation under Section 509(a)(1). The tax-exempt purpose of the Organization and the nature in which it operates is described above. Management believes the Organization operates in compliance with its tax-exempt purpose. Thus, no provision for income tax has been provided for in the financial statements. Operation Walk Chicago has adopted the requirements for accounting for uncertain tax positions and management has determined that the Organization was not required to record a liability related to uncertain tax positions as of December 31, 2024. The Organization's annual information and income tax returns filed with the federal and state governments are subject to examination generally for three years after they are filed.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part XI, Line 2d - Other Adjustments:</FormAndLineReferenceDesc>
        <ExplanationTxt>Credit card fees</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part XII, Line 4b - Other Adjustments:</FormAndLineReferenceDesc>
        <ExplanationTxt>Credit card fees</ExplanationTxt>
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        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>125000</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>Knee Implants</MethodOfDeterminingRevenuesTxt>
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      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>0</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>0</ThirdPartiesUsedInd>
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    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>Prior to its filing, the Treasurer submits the draft of the Form 990 to the entire Board of Directors for review.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>The Organization requires an annual assessment of any potential conflicts of interest.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 18</FormAndLineReferenceDesc>
        <ExplanationTxt>The Organization makes its Forms 1023 and 990 available to the public upon request.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>The Organization makes its governing documents, conflicts of interest policy, and financial statements available to the public upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>Independent contractors: Program service expenses 52,838. Management and general expenses 17,001. Fundraising expenses 14,960. Total expenses 84,799.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XII, line 2c:</FormAndLineReferenceDesc>
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</Return>