<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2024"
  xmlns:ecd="http://xbrl.sec.gov/ecd/2024"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="nmra-20250411.xsd" xlink:type="simple"/>
    <context id="C_f5fa4041-deab-4d48-9bba-06dacc8c26ff">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001885522</identifier>
        </entity>
        <period>
            <startDate>2024-01-01</startDate>
            <endDate>2024-12-31</endDate>
        </period>
    </context>
    <dei:EntityCentralIndexKey
      contextRef="C_f5fa4041-deab-4d48-9bba-06dacc8c26ff"
      id="F_f561be80-1d9c-4c2e-8cc3-d649fd7ff0ac">0001885522</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag
      contextRef="C_f5fa4041-deab-4d48-9bba-06dacc8c26ff"
      id="F_c9e20682-bbce-4f7c-b73a-b20d1a46e472">false</dei:AmendmentFlag>
    <dei:DocumentType
      contextRef="C_f5fa4041-deab-4d48-9bba-06dacc8c26ff"
      id="F_c9a2c7d9-aa46-4a56-b449-d301bf9843e6">PRE 14A</dei:DocumentType>
    <ecd:InsiderTrdPoliciesProcAdoptedFlag
      contextRef="C_f5fa4041-deab-4d48-9bba-06dacc8c26ff"
      id="F_c9b8c731-b61f-4a3a-b8d6-40215d30f06a">true</ecd:InsiderTrdPoliciesProcAdoptedFlag>
    <dei:EntityRegistrantName
      contextRef="C_f5fa4041-deab-4d48-9bba-06dacc8c26ff"
      id="F_739ba6b6-8612-478b-b5de-721a089dd76b">NEUMORA THERAPEUTICS, INC.</dei:EntityRegistrantName>
    <ecd:AwardTmgMnpiDiscTextBlock
      contextRef="C_f5fa4041-deab-4d48-9bba-06dacc8c26ff"
      id="F_adbdebb5-eeee-47bc-8e9f-ef786ddbbf64">&lt;p style="text-indent:36pt;font-size:10pt;margin-top:10pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"&gt;&lt;span style="font-size:10pt;font-family:Times New Roman;"&gt;&lt;span style="font-size:10pt;font-family:Times New Roman;"&gt;&lt;span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;font-kerning:none;min-width:fit-content;"&gt;We generally grant equity awards at regularly scheduled Board or Compensation Committee meetings&lt;/span&gt;&lt;/span&gt;&lt;span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;font-kerning:none;min-width:fit-content;"&gt;.&lt;/span&gt;&lt;/span&gt;&lt;span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;font-kerning:none;min-width:fit-content;"&gt; &lt;/span&gt;&lt;span style="font-size:10pt;font-family:Times New Roman;"&gt;&lt;span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;font-kerning:none;min-width:fit-content;"&gt;We do not grant equity awards in anticipation of the release of material nonpublic information&lt;/span&gt;&lt;/span&gt;&lt;span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;font-kerning:none;min-width:fit-content;"&gt; and &lt;/span&gt;&lt;span style="font-size:10pt;font-family:Times New Roman;"&gt;&lt;span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;font-kerning:none;min-width:fit-content;"&gt;we do not time the release of material nonpublic information for the purpose of affecting the value of executive compensation.&lt;/span&gt;&lt;/span&gt;&lt;span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;font-kerning:none;min-width:fit-content;"&gt; In the event material nonpublic information becomes known to the Compensation Committee before granting an equity award, the Compensation Committee will consider such information and use its business judgment to determine whether to delay the grant of equity to avoid any appearance of impropriety.&lt;/span&gt;&lt;span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;font-kerning:none;min-width:fit-content;"&gt;  &lt;/span&gt;&lt;/p&gt;&lt;p style="text-indent:36pt;font-size:10pt;margin-top:10pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"&gt;&lt;span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;font-kerning:none;min-width:fit-content;"&gt;During fiscal year 2024, we did not grant stock options or similar option&#x2010;like instruments to our NEOs during the four business days prior to or the one business day following the filing of our periodic reports or the filing or furnishing of a Form 8-K that discloses material nonpublic information.&lt;/span&gt;&lt;/p&gt;</ecd:AwardTmgMnpiDiscTextBlock>
    <ecd:AwardTmgMethodTextBlock
      contextRef="C_f5fa4041-deab-4d48-9bba-06dacc8c26ff"
      id="F_55745c4d-5e79-4d39-873d-e53f2ea5f896">&lt;span style="font-size:10pt;font-family:Times New Roman;"&gt;&lt;span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;font-kerning:none;min-width:fit-content;"&gt;We generally grant equity awards at regularly scheduled Board or Compensation Committee meetings&lt;/span&gt;&lt;/span&gt;&lt;span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;font-kerning:none;min-width:fit-content;"&gt;.&lt;/span&gt;</ecd:AwardTmgMethodTextBlock>
    <ecd:AwardTmgPredtrmndFlag
      contextRef="C_f5fa4041-deab-4d48-9bba-06dacc8c26ff"
      id="F_cbd44e78-2064-459c-b564-038baf61d65d">true</ecd:AwardTmgPredtrmndFlag>
    <ecd:AwardTmgMnpiCnsdrdFlag
      contextRef="C_f5fa4041-deab-4d48-9bba-06dacc8c26ff"
      id="F_57e1a8da-9aaf-4fd6-89ec-a2aa4ddc8897">false</ecd:AwardTmgMnpiCnsdrdFlag>
    <ecd:MnpiDiscTimedForCompValFlag
      contextRef="C_f5fa4041-deab-4d48-9bba-06dacc8c26ff"
      id="F_0a8a5b36-016b-4890-8d40-5a054e144111">false</ecd:MnpiDiscTimedForCompValFlag>
</xbrl>
