<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2026"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="mstr-20261019.xsd" xlink:type="simple"/>
    <context id="C_9507f78b-5e0a-4358-b4f7-bcd8e51412b3">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001050446</identifier>
        </entity>
        <period>
            <startDate>2026-10-16</startDate>
            <endDate>2026-10-16</endDate>
        </period>
    </context>
    <dei:EntityCentralIndexKey
      contextRef="C_9507f78b-5e0a-4358-b4f7-bcd8e51412b3"
      id="F_6c9251ae-3105-45dc-bab7-acb43c3f1bb9">0001050446</dei:EntityCentralIndexKey>
    <dei:DocumentType
      contextRef="C_9507f78b-5e0a-4358-b4f7-bcd8e51412b3"
      id="F_c9014879-c6c3-42b3-8058-233293654c44">DEFA14A</dei:DocumentType>
    <dei:AmendmentFlag
      contextRef="C_9507f78b-5e0a-4358-b4f7-bcd8e51412b3"
      id="F_579abc99-1b64-49c6-a0f9-3aa523876168">false</dei:AmendmentFlag>
    <dei:EntityRegistrantName
      contextRef="C_9507f78b-5e0a-4358-b4f7-bcd8e51412b3"
      id="F_0cda3a39-65bb-4d29-a13d-65d1ad09becc">Strategy Inc</dei:EntityRegistrantName>
</xbrl>
