<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2024"
  xmlns:ffd="http://xbrl.sec.gov/ffd/2024q2"
  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/2024q2/ffd-2024q2.xsd"
      xlink:type="simple"/>
    <context id="P02_20_2025To02_20_2025">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000350698</identifier>
        </entity>
        <period>
            <startDate>2025-02-20</startDate>
            <endDate>2025-02-20</endDate>
        </period>
    </context>
    <context id="P02_20_2025To02_20_2025_1TypedMemberffdOfferingAxis">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000350698</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>1</dei:lineNo>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-02-20</startDate>
            <endDate>2025-02-20</endDate>
        </period>
    </context>
    <unit id="Unit_USD">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="Unit_pure">
        <measure>pure</measure>
    </unit>
    <unit id="Unit_shares">
        <measure>shares</measure>
    </unit>
    <dei:EntityCentralIndexKey contextRef="P02_20_2025To02_20_2025" id="ixv-176">0000350698</dei:EntityCentralIndexKey>
    <ffd:SubmissnTp contextRef="P02_20_2025To02_20_2025" id="hidden130799590">424B5</ffd:SubmissnTp>
    <ffd:FeeExhibitTp contextRef="P02_20_2025To02_20_2025" id="ixv-178">EX-FILING FEES</ffd:FeeExhibitTp>
    <ffd:PrevslyPdFlg
      contextRef="P02_20_2025To02_20_2025_1TypedMemberffdOfferingAxis"
      id="ixv-179">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTitl
      contextRef="P02_20_2025To02_20_2025_1TypedMemberffdOfferingAxis"
      id="hidden130799812">5.890% senior notes due 2035</ffd:OfferingSctyTitl>
    <ffd:TtlPrevslyPdAmt
      contextRef="P02_20_2025To02_20_2025"
      decimals="0"
      id="ixv-181"
      unitRef="Unit_USD">0</ffd:TtlPrevslyPdAmt>
    <dei:EntityRegistrantName contextRef="P02_20_2025To02_20_2025" id="ixv-206">AutoNation, Inc.</dei:EntityRegistrantName>
    <ffd:OfferingSctyTp
      contextRef="P02_20_2025To02_20_2025_1TypedMemberffdOfferingAxis"
      id="ixv-207">Debt</ffd:OfferingSctyTp>
    <ffd:Rule457rFlg
      contextRef="P02_20_2025To02_20_2025_1TypedMemberffdOfferingAxis"
      id="ixv-208">true</ffd:Rule457rFlg>
    <ffd:AmtSctiesRegd
      contextRef="P02_20_2025To02_20_2025_1TypedMemberffdOfferingAxis"
      decimals="0"
      id="ixv-209"
      unitRef="Unit_shares">500000000</ffd:AmtSctiesRegd>
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      contextRef="P02_20_2025To02_20_2025_1TypedMemberffdOfferingAxis"
      decimals="5"
      id="ixv-210"
      unitRef="Unit_pure">0.99995</ffd:MaxOfferingPricPerScty>
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      contextRef="P02_20_2025To02_20_2025_1TypedMemberffdOfferingAxis"
      decimals="0"
      id="ixv-211"
      unitRef="Unit_USD">499975000</ffd:MaxAggtOfferingPric>
    <ffd:FeeRate
      contextRef="P02_20_2025To02_20_2025_1TypedMemberffdOfferingAxis"
      decimals="INF"
      id="ixv-212"
      unitRef="Unit_pure">0.0001531</ffd:FeeRate>
    <ffd:TtlFeeAmt
      contextRef="P02_20_2025To02_20_2025"
      decimals="2"
      id="ixv-213"
      unitRef="Unit_USD">76546.17</ffd:TtlFeeAmt>
    <ffd:FeeAmt
      contextRef="P02_20_2025To02_20_2025_1TypedMemberffdOfferingAxis"
      decimals="2"
      id="ixv-214"
      unitRef="Unit_USD">76546.17</ffd:FeeAmt>
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      contextRef="P02_20_2025To02_20_2025"
      decimals="0"
      id="ixv-215"
      unitRef="Unit_USD">499975000</ffd:TtlOfferingAmt>
    <ffd:NetFeeAmt
      contextRef="P02_20_2025To02_20_2025"
      decimals="2"
      id="ixv-216"
      unitRef="Unit_USD">76546.17</ffd:NetFeeAmt>
    <ffd:OfferingNote
      contextRef="P02_20_2025To02_20_2025_1TypedMemberffdOfferingAxis"
      id="ixv-161">
&lt;table cellpadding="0" cellspacing="0" style="text-align:start; BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;border:0;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:4%;vertical-align:top;text-align:left"&gt;(1)&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left"&gt;&lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: left; line-height: normal;"&gt;This registration fee table shall be deemed to update the &#x201c;Calculation of Registration Fee&#x201d; in the Company&#x2019;s Registration Statement on &lt;div style="white-space: nowrap; letter-spacing: 0px; top: 0px;display:inline;"&gt;Form&#160;&lt;div style="display:inline;"&gt;S-3&lt;/div&gt;&lt;/div&gt; (File No.&#160;333-284995) in accordance with Rules 456(b) and 457(r) under the Securities Act of 1933, as amended. &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</ffd:OfferingNote>
    <ffd:FormTp contextRef="P02_20_2025To02_20_2025" id="ixv-217">S-3</ffd:FormTp>
    <ffd:RegnFileNb contextRef="P02_20_2025To02_20_2025" id="ixv-218">333-284995</ffd:RegnFileNb>
</xbrl>
