<?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">0001760854</identifier>
        </entity>
        <period>
            <startDate>2026-06-08</startDate>
            <endDate>2026-06-08</endDate>
        </period>
    </context>
    <context id="c1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001760854</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>1</dei:lineNo>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-06-08</startDate>
            <endDate>2026-06-08</endDate>
        </period>
    </context>
    <unit id="shares">
        <measure>shares</measure>
    </unit>
    <unit id="usdPershares">
        <divide>
            <unitNumerator>
                <measure>iso4217:USD</measure>
            </unitNumerator>
            <unitDenominator>
                <measure>shares</measure>
            </unitDenominator>
        </divide>
    </unit>
    <unit id="usd">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="pure">
        <measure>pure</measure>
    </unit>
    <ffd:SubmissnTp contextRef="c0" id="ixv-134">S-8</ffd:SubmissnTp>
    <ffd:FormTp contextRef="c0" id="ixv-135">S-8</ffd:FormTp>
    <dei:EntityRegistrantName contextRef="c0" id="ixv-24">Nanobiotix S.A.</dei:EntityRegistrantName>
    <ffd:OfferingSctyTp contextRef="c1" id="ixv-68">Equity</ffd:OfferingSctyTp>
    <ffd:PrevslyPdFlg contextRef="c1" id="ixv-69">false</ffd:PrevslyPdFlg>
    <ffd:FeesOthrRuleFlg contextRef="c1" id="ixv-76">true</ffd:FeesOthrRuleFlg>
    <ffd:AmtSctiesRegd
      contextRef="c1"
      decimals="INF"
      id="ixv-136"
      unitRef="shares">1663202</ffd:AmtSctiesRegd>
    <ffd:MaxOfferingPricPerScty
      contextRef="c1"
      decimals="INF"
      id="ixv-137"
      unitRef="usdPershares">35.31</ffd:MaxOfferingPricPerScty>
    <ffd:MaxAggtOfferingPric contextRef="c1" decimals="INF" id="ixv-138" unitRef="usd">58727662.62</ffd:MaxAggtOfferingPric>
    <ffd:FeeRate contextRef="c1" decimals="INF" id="ixv-139" unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:FeeAmt contextRef="c1" decimals="2" id="ixv-140" unitRef="usd">8110.29</ffd:FeeAmt>
    <ffd:TtlOfferingAmt contextRef="c0" decimals="INF" id="ixv-141" unitRef="usd">58727662.62</ffd:TtlOfferingAmt>
    <ffd:TtlFeeAmt contextRef="c0" decimals="2" id="ixv-142" unitRef="usd">8110.29</ffd:TtlFeeAmt>
    <ffd:TtlOffsetAmt contextRef="c0" decimals="0" id="ixv-143" unitRef="usd">0</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt contextRef="c0" decimals="2" id="ixv-144" unitRef="usd">8110.29</ffd:NetFeeAmt>
    <ffd:OfferingNote contextRef="c1" id="ixv-113">&lt;table style="font-size: 12pt; border-spacing: 0px; border-collapse: collapse; width: 100%;"&gt; &lt;tr style="height: 0px; font-size: 0px;"&gt;&lt;td style="width: 1%;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 99%;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="vertical-align: top;"&gt; &lt;td style="padding: 0px 0pt; font-size: 10pt;"&gt; &lt;div style="margin-bottom: 4pt;"&gt; (1) &lt;/div&gt; &lt;/td&gt; &lt;td style="padding: 0px 5.4pt; text-align: left; font-size: 10pt;"&gt; &lt;div style="margin-bottom: 4pt;"&gt; The amount of shares registered may be represented by American Depositary Shares, or ADSs, of Nanobiotix S.A. (the &#x201c;&lt;b&gt;&lt;i&gt;Registrant&lt;/i&gt;&lt;/b&gt;&#x201d;). Each ADS represents one ordinary share of the Registrant. The Registrant&#x2019;s ADSs issuable upon deposit of the ordinary shares registered hereby have been registered pursuant to a separate registration statement on Form F-6 (File No. 333-250880).&lt;br/&gt;&lt;br/&gt;Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the &#x201c;Securities Act&#x201d;), this Registration Statement shall also cover any additional ordinary shares of the Registrant that may become issuable under the Registrant&#x2019;s 2026 Free Share Plan by reason of any share dividend, share split, share combination, recapitalization or other similar transaction effected without receipt of consideration that increases the number of the Registrant&#x2019;s outstanding ordinary shares.&lt;br/&gt;&lt;br/&gt;The Proposed Maximum Offering Price Per Unit is estimated solely for the purpose of calculating the amount of the registration fee pursuant to Rule 457(c) and Rule 457(h) of the Securities Act based upon the price of $35.31 per ADS, which was the average of the high and low prices of the ADS as reported on NASDAQ for June 3, 2026 (rounded to the nearest cent). &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</ffd:OfferingNote>
    <ffd:OfferingSctyTitl contextRef="c1" id="hidden-fact-0">Ordinary shares, Euro0.03 nominal value per share, 2026 Free Share Plan</ffd:OfferingSctyTitl>
    <dei:EntityCentralIndexKey contextRef="c0" id="ixv-148">0001760854</dei:EntityCentralIndexKey>
    <ffd:FeeExhibitTp contextRef="c0" id="ixv-149">EX-FILING FEES</ffd:FeeExhibitTp>
    <ffd:OffsetTableNa contextRef="c0" id="ixv-150">N/A</ffd:OffsetTableNa>
</xbrl>
