<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2025"
  xmlns:ffd="http://xbrl.sec.gov/ffd/2025"
  xmlns:iso4217="http://www.xbrl.org/2003/iso4217"
  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="https://xbrl.sec.gov/ffd/2025/ffd-2025.xsd"
      xlink:type="simple"/>
    <context id="c0">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001843162</identifier>
        </entity>
        <period>
            <startDate>2026-05-11</startDate>
            <endDate>2026-05-11</endDate>
        </period>
    </context>
    <context id="c1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001843162</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>1</dei:lineNo>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-11</startDate>
            <endDate>2026-05-11</endDate>
        </period>
    </context>
    <context id="c2">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001843162</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>2</dei:lineNo>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-11</startDate>
            <endDate>2026-05-11</endDate>
        </period>
    </context>
    <unit id="usd">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="pure">
        <measure>pure</measure>
    </unit>
    <ffd:SubmissnTp contextRef="c0" id="ixv-160">N-2</ffd:SubmissnTp>
    <ffd:FormTp contextRef="c0" id="ixv-161">N-2</ffd:FormTp>
    <dei:EntityRegistrantName contextRef="c0" id="ixv-162">Chicago Atlantic BDC, Inc.</dei:EntityRegistrantName>
    <ffd:PrevslyPdFlg contextRef="c1" id="ixv-163">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="c1" id="ixv-164">Unallocated (Universal) Shelf</ffd:OfferingSctyTp>
    <ffd:Rule457oFlg contextRef="c1" id="ixv-165">true</ffd:Rule457oFlg>
    <ffd:MaxAggtOfferingPric contextRef="c1" decimals="INF" id="ixv-166" unitRef="usd">500000000</ffd:MaxAggtOfferingPric>
    <ffd:FeeRate contextRef="c1" decimals="INF" id="ixv-167" unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:FeeAmt contextRef="c1" decimals="0" id="ixv-168" unitRef="usd">69050</ffd:FeeAmt>
    <ffd:PrevslyPdFlg contextRef="c2" id="ixv-59">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="c2" id="ixv-169">Other</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="c2" id="ixv-170">Other</ffd:OfferingSctyTitl>
    <ffd:Rule457oFlg contextRef="c2" id="ixv-171">true</ffd:Rule457oFlg>
    <ffd:TtlOfferingAmt contextRef="c0" decimals="INF" id="ixv-172" unitRef="usd">500000000</ffd:TtlOfferingAmt>
    <ffd:TtlFeeAmt contextRef="c0" decimals="0" id="ixv-173" unitRef="usd">69050</ffd:TtlFeeAmt>
    <ffd:TtlPrevslyPdAmt contextRef="c0" decimals="2" id="ixv-174" unitRef="usd">0</ffd:TtlPrevslyPdAmt>
    <ffd:TtlOffsetAmt contextRef="c0" decimals="0" id="ixv-175" unitRef="usd">0</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt contextRef="c0" decimals="0" id="ixv-176" unitRef="usd">69050</ffd:NetFeeAmt>
    <ffd:CombinedProspectusTableNa contextRef="c0" id="ixv-179">N/A</ffd:CombinedProspectusTableNa>
    <dei:EntityCentralIndexKey contextRef="c0" id="ixv-180">0001843162</dei:EntityCentralIndexKey>
    <ffd:FeeExhibitTp contextRef="c0" id="ixv-181">EX-FILING FEES</ffd:FeeExhibitTp>
    <ffd:OffsetTableNa contextRef="c0" id="ixv-182">N/A</ffd:OffsetTableNa>
</xbrl>
