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    <context id="rc">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001682149</identifier>
        </entity>
        <period>
            <startDate>2026-04-28</startDate>
            <endDate>2026-04-28</endDate>
        </period>
    </context>
    <context id="offrl_1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001682149</identifier>
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                <xbrldi:typedMember dimension="ffd:OfferingAxis">
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        <period>
            <startDate>2026-04-28</startDate>
            <endDate>2026-04-28</endDate>
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    <unit id="USD">
        <measure>iso4217:USD</measure>
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    <unit id="pure">
        <measure>pure</measure>
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    <unit id="Shares">
        <measure>shares</measure>
    </unit>
    <ffd:FormTp contextRef="rc" id="ixv-331">S-3</ffd:FormTp>
    <ffd:SubmissnTp contextRef="rc" id="ixv-332">S-3</ffd:SubmissnTp>
    <ffd:FeeExhibitTp contextRef="rc" id="ixv-333">EX-FILING FEES</ffd:FeeExhibitTp>
    <dei:EntityCentralIndexKey contextRef="rc" id="ixv-334">0001682149</dei:EntityCentralIndexKey>
    <dei:EntityRegistrantName contextRef="rc" id="ixv-335">Datavault AI Inc.</dei:EntityRegistrantName>
    <ffd:OfferingTableNa contextRef="rc" id="hiddenrcOfferingTableNa" xsi:nil="true"/>
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    <ffd:FormTp contextRef="rc" id="ixv-363">S-3</ffd:FormTp>
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      contextRef="offrl_1"
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      id="ixv-369"
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      contextRef="offrl_1"
      decimals="2"
      id="ixv-370"
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      contextRef="offrl_1"
      decimals="2"
      id="ixv-371"
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      contextRef="offrl_1"
      decimals="7"
      id="ixv-372"
      unitRef="pure">0.0001381</ffd:FeeRate>
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      contextRef="offrl_1"
      decimals="2"
      id="ixv-373"
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    <ffd:OfferingNote contextRef="offrl_1" id="ixv-379">Estimated solely for the purpose of computing the amount of the registration fee pursuant to Rule 457(c) of the Securities Act, based upon the average of the high and low prices for a share of Common Stock as reported on the Nasdaq Capital Market on April 6, 2026, which date is a date within five business days of the filing of the registration statement filed by the Registrant for the registration of the securities listed in the table above (the "Registration Statement").</ffd:OfferingNote>
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