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<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2026"
  xmlns:ecd="http://xbrl.sec.gov/ecd/2026"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="hepa-20251231.xsd" xlink:type="simple"/>
    <context id="From2025-01-01to2025-12-31">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001583771</identifier>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="From2025-01-012025-12-31_2025-12-31">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001583771</identifier>
            <segment>
                <xbrldi:typedMember dimension="ecd:RestatementDateAxis">
                    <ecd:RestatementDateAxis.domain>2025-12-31</ecd:RestatementDateAxis.domain>
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            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <dei:AmendmentFlag contextRef="From2025-01-01to2025-12-31" id="Fact000003">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey contextRef="From2025-01-01to2025-12-31" id="Fact000004">0001583771</dei:EntityCentralIndexKey>
    <dei:DocumentType contextRef="From2025-01-01to2025-12-31" id="xdx2ixbrl0010">PRE 14C</dei:DocumentType>
    <dei:EntityRegistrantName contextRef="From2025-01-01to2025-12-31" id="Fact000011">HEPION PHARMACEUTICALS, INC.</dei:EntityRegistrantName>
    <ecd:ErrCompAnalysisTextBlock
      contextRef="From2025-01-012025-12-31_2025-12-31"
      id="Fact000012">If
the Company is required to prepare a financial restatement due to the Company&#x2019;s material non-compliance with any financial reporting
requirement under the securities law, then the plan administrator may require any Section 10D-1(d) of the Exchange Act &#x201c;executive
officer&#x201d; to repay or forfeit to us that part of the cash or equity incentive compensation received by that Section 10D-1(d) executive
officer during the preceding three completed fiscal years that the plan administrator determines was in excess of the amount that such
Section 10D-1(d) executive officer would have received had such cash or equity incentive compensation been calculated based on the restated
amounts reported in the restated financial statement. The plan administrator may take into account any factors it deems reasonable in
determining whether to seek recoupment of previously paid cash or equity incentive compensation and how much of such compensation to
recoup from each Section 10D-1(d) executive officer (which shall be made irrespective of any fault, misconduct or responsibility of each
Section 10D-1(d) executive officer). The amount and form of the incentive compensation to be recouped shall be determined by the plan
administrator in its sole and absolute discretion, and calculated on a pre-tax basis.</ecd:ErrCompAnalysisTextBlock>
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