<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2022"
  xmlns:iso4217="http://www.xbrl.org/2003/iso4217"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:nationwide="http://www.nationwide.com/20230719"
  xmlns:utr="http://www.xbrl.org/2009/utr"
  xmlns:vip="http://xbrl.sec.gov/vip/2022q2"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="nationwide-20230719.xsd" xlink:type="simple"/>
    <context id="C000024492_LazardRetirementUSSmallCapEquitySelectPortfolioOpenSharesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000202713</identifier>
            <segment>
                <xbrldi:explicitMember dimension="vip:ContractAxis">nationwide:C000024492Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="vip:PortfolioCompanyAxis">nationwide:LazardRetirementUSSmallCapEquitySelectPortfolioOpenSharesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2022-12-30</startDate>
            <endDate>2022-12-30</endDate>
        </period>
    </context>
    <context id="D_30Dec2022_30Dec2022">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000202713</identifier>
        </entity>
        <period>
            <startDate>2022-12-30</startDate>
            <endDate>2022-12-30</endDate>
        </period>
    </context>
    <unit id="pure">
        <measure>pure</measure>
    </unit>
    <unit id="USD">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="Years">
        <measure>utr:Y</measure>
    </unit>
    <dei:DocumentPeriodEndDate contextRef="D_30Dec2022_30Dec2022" id="apid_1">2022-12-30</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName contextRef="D_30Dec2022_30Dec2022" id="apid_2">Nationwide Variable Account</dei:EntityRegistrantName>
    <dei:EntityCentralIndexKey contextRef="D_30Dec2022_30Dec2022" id="apid_3">0000202713</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag contextRef="D_30Dec2022_30Dec2022" id="apid_4">false</dei:AmendmentFlag>
    <dei:EntityInvCompanyType contextRef="D_30Dec2022_30Dec2022" id="apid_8">N-4</dei:EntityInvCompanyType>
    <dei:DocumentType contextRef="D_30Dec2022_30Dec2022" id="apid_9">N-4</dei:DocumentType>
    <vip:PortfolioCompanyNameTextBlock
      contextRef="C000024492_LazardRetirementUSSmallCapEquitySelectPortfolioOpenSharesMember"
      id="c3924bee-90bc-46af-8339-b55f081e74c6">&lt;span style="color:#000000;font-family:Arial;font-size:10pt;"&gt;The following underlying mutual fund is offered as an investment option under the contract.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:10pt;line-height:12pt;"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:10pt;"&gt;Effective September 1, 2023, the name of the investment option is updated as indicated below:&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:1pt;line-height:1pt;"&gt;&#x2003;&lt;/span&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-bottom:0.5pt solid #000000;border-left:0.5pt solid #000000;border-right:0.5pt solid #000000;border-top:0.5pt solid #000000;empty-cells:show;width:541pt;"&gt;
&lt;tr style="height:17.5pt;"&gt;
&lt;td style="border-bottom:0.5pt solid #000000;border-right:0.5pt solid #000000;padding-bottom:3.125pt;padding-top:3.125pt;vertical-align:Bottom;width:270.5pt;"&gt; &lt;div style="line-height:11.0pt;text-align:left;"&gt; &lt;div style="margin-left:3pt;margin-right:5.75pt;text-align:Center;white-space:nowrap;"&gt;&lt;span style="color:#000000;font-family:Arial;font-size:8pt;font-weight:bold;"&gt;CURRENT NAME&lt;/span&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;
&lt;td style="border-bottom:0.5pt solid #000000;padding-bottom:3.125pt;padding-top:3.125pt;vertical-align:Bottom;width:270.5pt;"&gt; &lt;div style="line-height:11.0pt;text-align:left;"&gt; &lt;div style="margin-left:5.75pt;margin-right:3pt;text-align:Center;white-space:nowrap;"&gt;&lt;span style="color:#000000;font-family:Arial;font-size:8pt;font-weight:bold;"&gt;UPDATED NAME&lt;/span&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="height:23.5pt;"&gt;
&lt;td style="border-right:0.5pt solid #000000;padding-bottom:3.125pt;padding-top:3.125pt;vertical-align:Top;width:270.5pt;"&gt; &lt;div style="line-height:12.0pt;text-align:left;"&gt; &lt;div style="margin-left:3pt;margin-right:5.75pt;text-align:Left;white-space:nowrap;"&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9pt;margin-left:0.0pt;"&gt;Lazard U.S. Small-Mid Cap Equity Portfolio: Open Shares&lt;/span&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;
&lt;td style="padding-bottom:3.125pt;padding-top:3.125pt;vertical-align:Top;width:270.5pt;"&gt; &lt;div style="line-height:12.0pt;text-align:left;"&gt; &lt;div style="margin-left:5.75pt;margin-right:3pt;text-align:Left;white-space:nowrap;"&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9pt;margin-left:0.0pt;"&gt;Lazard Retirement US Small Cap Equity Select Portfolio - Open &lt;/span&gt;&lt;/div&gt; &lt;div style="margin-left:5.75pt;margin-right:3pt;text-align:Left;white-space:nowrap;"&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9pt;margin-left:0.0pt;"&gt;Shares&lt;/span&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</vip:PortfolioCompanyNameTextBlock>
</xbrl>
