<?xml version="1.0" encoding="utf-8"?>
<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="cmmb-20251231.xsd" xlink:type="simple"/>
    <context id="From2025-01-01to2025-12-31">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001534248</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">0001534248</identifier>
            <segment>
                <xbrldi:typedMember dimension="ecd:RestatementDateAxis">
                    <ecd:RestatementDateAxis.domain>2025-12-31</ecd:RestatementDateAxis.domain>
                </xbrldi:typedMember>
            </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">0001534248</dei:EntityCentralIndexKey>
    <dei:DocumentType contextRef="From2025-01-01to2025-12-31" id="xdx2ixbrl0010">DEFM14A</dei:DocumentType>
    <dei:EntityRegistrantName contextRef="From2025-01-01to2025-12-31" id="Fact000011">CHEMOMAB THERAPEUTICS LTD.</dei:EntityRegistrantName>
    <ecd:ErrCompAnalysisTextBlock
      contextRef="From2025-01-012025-12-31_2025-12-31"
      id="Fact000012">All
awards granted under the 2026 Plan are subject to recoupment under any clawback policy the Company is required to adopt under applicable
stock exchange listing standards or the Dodd-Frank Wall Street Reform and Consumer Protection Act, and under any other clawback policy
the Company otherwise adopts, in each case to the extent applicable and permitted by law. The Administrator may also impose additional
clawback, forfeiture, or recoupment provisions in an award agreement, including in connection with a termination for Cause.</ecd:ErrCompAnalysisTextBlock>
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