<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2022"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:us-gaap="http://fasb.org/us-gaap/2022"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="dhcau-20230303.xsd" xlink:type="simple"/>
    <context id="duration_2023-03-03_to_2023-03-03">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001838163</identifier>
        </entity>
        <period>
            <startDate>2023-03-03</startDate>
            <endDate>2023-03-03</endDate>
        </period>
    </context>
    <context id="duration_2023-03-03_to_2023-03-03_us-gaap-StatementClassOfStockAxis_us-gaap-CapitalUnitsMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001838163</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CapitalUnitsMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2023-03-03</startDate>
            <endDate>2023-03-03</endDate>
        </period>
    </context>
    <context id="duration_2023-03-03_to_2023-03-03_us-gaap-StatementClassOfStockAxis_us-gaap-CommonClassAMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001838163</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonClassAMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2023-03-03</startDate>
            <endDate>2023-03-03</endDate>
        </period>
    </context>
    <context id="duration_2023-03-03_to_2023-03-03_us-gaap-StatementClassOfStockAxis_us-gaap-WarrantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001838163</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:WarrantMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2023-03-03</startDate>
            <endDate>2023-03-03</endDate>
        </period>
    </context>
    <dei:EntityRegistrantName
      contextRef="duration_2023-03-03_to_2023-03-03"
      id="Hidden_dei_EntityRegistrantName">DHC Acquisition Corp.</dei:EntityRegistrantName>
    <dei:Security12bTitle
      contextRef="duration_2023-03-03_to_2023-03-03_us-gaap-StatementClassOfStockAxis_us-gaap-CapitalUnitsMember"
      id="Hidden_dei_Security12bTitle_duration_2023-03-03_to_2023-03-03_us-gaap-StatementClassOfStockAxis_us-gaap-CapitalUnitsMember">Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-third of one redeemable warrant</dei:Security12bTitle>
    <dei:CurrentFiscalYearEndDate
      contextRef="duration_2023-03-03_to_2023-03-03"
      id="Hidden_dei_CurrentFiscalYearEndDate_duration_2023-03-03_to_2023-03-03">--12-31</dei:CurrentFiscalYearEndDate>
    <dei:AmendmentFlag
      contextRef="duration_2023-03-03_to_2023-03-03"
      id="Hidden_dei_AmendmentFlag_duration_2023-03-03_to_2023-03-03">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey
      contextRef="duration_2023-03-03_to_2023-03-03"
      id="Hidden_dei_EntityCentralIndexKey_duration_2023-03-03_to_2023-03-03">0001838163</dei:EntityCentralIndexKey>
    <dei:DocumentType contextRef="duration_2023-03-03_to_2023-03-03">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate contextRef="duration_2023-03-03_to_2023-03-03">2023-03-03</dei:DocumentPeriodEndDate>
    <dei:EntityIncorporationStateCountryCode contextRef="duration_2023-03-03_to_2023-03-03">E9</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber contextRef="duration_2023-03-03_to_2023-03-03">001-40130</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber contextRef="duration_2023-03-03_to_2023-03-03">98-1574798</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1 contextRef="duration_2023-03-03_to_2023-03-03">535 Silicon Drive</dei:EntityAddressAddressLine1>
    <dei:EntityAddressAddressLine2 contextRef="duration_2023-03-03_to_2023-03-03">Suite 100</dei:EntityAddressAddressLine2>
    <dei:EntityAddressCityOrTown contextRef="duration_2023-03-03_to_2023-03-03">Southlake</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince contextRef="duration_2023-03-03_to_2023-03-03">TX</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode contextRef="duration_2023-03-03_to_2023-03-03">76092</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode contextRef="duration_2023-03-03_to_2023-03-03">214</dei:CityAreaCode>
    <dei:LocalPhoneNumber contextRef="duration_2023-03-03_to_2023-03-03">452-2300</dei:LocalPhoneNumber>
    <dei:WrittenCommunications contextRef="duration_2023-03-03_to_2023-03-03">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial contextRef="duration_2023-03-03_to_2023-03-03">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer contextRef="duration_2023-03-03_to_2023-03-03">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer contextRef="duration_2023-03-03_to_2023-03-03">false</dei:PreCommencementIssuerTenderOffer>
    <dei:TradingSymbol contextRef="duration_2023-03-03_to_2023-03-03_us-gaap-StatementClassOfStockAxis_us-gaap-CapitalUnitsMember">DHCAU</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="duration_2023-03-03_to_2023-03-03_us-gaap-StatementClassOfStockAxis_us-gaap-CapitalUnitsMember">NASDAQ</dei:SecurityExchangeName>
    <dei:Security12bTitle contextRef="duration_2023-03-03_to_2023-03-03_us-gaap-StatementClassOfStockAxis_us-gaap-CommonClassAMember">Class A ordinary shares included as part of the units</dei:Security12bTitle>
    <dei:TradingSymbol contextRef="duration_2023-03-03_to_2023-03-03_us-gaap-StatementClassOfStockAxis_us-gaap-CommonClassAMember">DHCA</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="duration_2023-03-03_to_2023-03-03_us-gaap-StatementClassOfStockAxis_us-gaap-CommonClassAMember">NASDAQ</dei:SecurityExchangeName>
    <dei:Security12bTitle contextRef="duration_2023-03-03_to_2023-03-03_us-gaap-StatementClassOfStockAxis_us-gaap-WarrantMember">Redeemable warrants included as part of the units, each whole warrant exercisable for one Class A ordinary share of at an exercise price of $11.50</dei:Security12bTitle>
    <dei:TradingSymbol contextRef="duration_2023-03-03_to_2023-03-03_us-gaap-StatementClassOfStockAxis_us-gaap-WarrantMember">DHCAW</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="duration_2023-03-03_to_2023-03-03_us-gaap-StatementClassOfStockAxis_us-gaap-WarrantMember">NASDAQ</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany contextRef="duration_2023-03-03_to_2023-03-03">true</dei:EntityEmergingGrowthCompany>
    <dei:EntityExTransitionPeriod contextRef="duration_2023-03-03_to_2023-03-03">false</dei:EntityExTransitionPeriod>
</xbrl>
