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        <period>
            <startDate>2026-03-24</startDate>
            <endDate>2026-03-24</endDate>
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            <startDate>2026-03-24</startDate>
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        <period>
            <startDate>2026-03-24</startDate>
            <endDate>2026-03-24</endDate>
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    <context id="From2026-03-242026-03-24_3">
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        <period>
            <startDate>2026-03-24</startDate>
            <endDate>2026-03-24</endDate>
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    <unit id="USD">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="Ratio">
        <measure>pure</measure>
    </unit>
    <dei:EntityCentralIndexKey contextRef="AsOf2026-03-24" id="Fact000003">0000812801</dei:EntityCentralIndexKey>
    <ffd:FeeExhibitTp contextRef="AsOf2026-03-24" id="xdx2ixbrl0009">EX-FILING FEES</ffd:FeeExhibitTp>
    <ffd:SubmissnTp contextRef="AsOf2026-03-24" id="xdx2ixbrl0011">N-2ASR</ffd:SubmissnTp>
    <ffd:FeeRate
      contextRef="From2026-03-242026-03-24_1"
      id="xdx2ixbrl0017"
      unitRef="Ratio"
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      contextRef="From2026-03-242026-03-24_2"
      id="xdx2ixbrl0022"
      unitRef="Ratio"
      xsi:nil="true"/>
    <ffd:OfferingSctyTp contextRef="From2026-03-242026-03-24_3" id="xdx2ixbrl0025">Other</ffd:OfferingSctyTp>
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      xsi:nil="true"/>
    <ffd:FormTp contextRef="AsOf2026-03-24" id="Fact000010">N-2</ffd:FormTp>
    <dei:EntityRegistrantName contextRef="AsOf2026-03-24" id="Fact000012">Nuveen Municipal Value Fund, Inc.</dei:EntityRegistrantName>
    <ffd:PrevslyPdFlg contextRef="From2026-03-242026-03-24_1" id="Fact000013">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="From2026-03-242026-03-24_1" id="Fact000014">Equity</ffd:OfferingSctyTp>
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    <ffd:Rule457rFlg contextRef="From2026-03-242026-03-24_1" id="Fact000016">true</ffd:Rule457rFlg>
    <ffd:PrevslyPdFlg contextRef="From2026-03-242026-03-24_2" id="Fact000018">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="From2026-03-242026-03-24_2" id="Fact000019">Other</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="From2026-03-242026-03-24_2" id="Fact000020">Rights to purchase Common Shares(3)</ffd:OfferingSctyTitl>
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    <ffd:FeeAmt
      contextRef="From2026-03-242026-03-24_2"
      decimals="INF"
      id="Fact000023"
      unitRef="USD">0</ffd:FeeAmt>
    <ffd:PrevslyPdFlg contextRef="From2026-03-242026-03-24_3" id="Fact000024">false</ffd:PrevslyPdFlg>
    <ffd:Rule457rFlg contextRef="From2026-03-242026-03-24_3" id="Fact000027">true</ffd:Rule457rFlg>
    <ffd:TtlOfferingAmt
      contextRef="AsOf2026-03-24"
      decimals="INF"
      id="Fact000029"
      unitRef="USD">0</ffd:TtlOfferingAmt>
    <ffd:TtlFeeAmt
      contextRef="AsOf2026-03-24"
      decimals="INF"
      id="Fact000030"
      unitRef="USD">0</ffd:TtlFeeAmt>
    <ffd:TtlPrevslyPdAmt
      contextRef="AsOf2026-03-24"
      decimals="INF"
      id="Fact000031"
      unitRef="USD">0</ffd:TtlPrevslyPdAmt>
    <ffd:TtlOffsetAmt
      contextRef="AsOf2026-03-24"
      decimals="INF"
      id="Fact000032"
      unitRef="USD">0</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt
      contextRef="AsOf2026-03-24"
      decimals="INF"
      id="Fact000033"
      unitRef="USD">0</ffd:NetFeeAmt>
    <ffd:OfferingNote contextRef="From2026-03-242026-03-24_1" id="Fact000034">
&lt;table cellpadding="0" cellspacing="0" style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 6pt; width: 100%"&gt;&lt;tr style="vertical-align: top; text-align: justify"&gt;
&lt;td style="width: 15pt; text-align: right"&gt;&lt;sup&gt;(1)&lt;/sup&gt;&lt;/td&gt;&lt;td style="width: 5pt"&gt;&lt;/td&gt;&lt;td style="text-align: justify"&gt;An indeterminate number of common stock, and
subscription rights to purchase common stock are being registered as may from time to time be offered, on an immediate, continuous
or delayed basis, at indeterminate prices.&lt;/td&gt;
&lt;/tr&gt;&lt;/table&gt;

&lt;table cellpadding="0" cellspacing="0" style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 6pt; width: 100%"&gt;&lt;tr style="vertical-align: top; text-align: justify"&gt;
&lt;td style="width: 15pt; text-align: right"&gt;&lt;sup&gt;(2)&lt;/sup&gt;&lt;/td&gt;&lt;td style="width: 5pt"&gt;&lt;/td&gt;&lt;td style="text-align: justify"&gt;In accordance with Rule 456(b) and Rule 457(r) under the
Securities Act of 1933, as amended, the Registrant is deferring payment of all of the registration fees and will pay any
registration fees subsequently in advance or on a pay-as-you-go basis.&lt;/td&gt;
&lt;/tr&gt;&lt;/table&gt;
</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="From2026-03-242026-03-24_2" id="Fact000035">No separate consideration will be received by the
Registrant. Any shares issued pursuant to an offering of rights to purchase common stock, including any shares issued pursuant to an
over-subscription privilege or a secondary over subscription privilege, will be shares registered under this Registration
Statement.</ffd:OfferingNote>
    <ffd:OffsetTableNa contextRef="AsOf2026-03-24" id="Fact000037">N/A</ffd:OffsetTableNa>
    <ffd:CombinedProspectusTableNa contextRef="AsOf2026-03-24" id="Fact000038">N/A</ffd:CombinedProspectusTableNa>
    <ffd:OfferingNote contextRef="From2026-03-242026-03-24_3" id="Fact000039">See Offering Note 1</ffd:OfferingNote>
</xbrl>
