<?xml version="1.0" encoding="UTF-8"?>
<xbrl
        xml:lang="en"
        xmlns="http://www.xbrl.org/2003/instance"
        xmlns:mock="http://www.mock.com/mock"
        xmlns:iso4217="http://www.xbrl.org/2003/iso4217"
        xmlns:link="http://www.xbrl.org/2003/linkbase"
        xmlns:xbrli="http://www.xbrl.org/2003/instance"
        xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef
            xlink:href="../mock-taxonomy.xsd"
            xlink:type="simple"/>
    <context id="ctx-1">
        <entity>
            <identifier scheme="http://www.kvk.nl/kvk-id">12345678</identifier>
        </entity>
        <period>
            <startDate>2021-01-01</startDate>
            <endDate>2021-12-31</endDate>
        </period>
    </context>
    <xbrli:unit id="usd">
        <xbrli:measure>iso4217:USD</xbrli:measure>
    </xbrli:unit>
    <mock:Monetary contextRef="ctx-1" unitRef="usd" decimals="INF">100</mock:Monetary>
    <mock:Monetary contextRef="ctx-1" unitRef="usd" decimals="INF" id="123">100</mock:Monetary> <!-- CAUSE: fact has id attribute-->
    <mock:Monetary contextRef="ctx-1" unitRef="usd" decimals="INF" id="">100</mock:Monetary> <!-- CAUSE: fact has blank id attribute-->
</xbrl>
