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    <unit id="usd">
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    <unit id="pure">
        <measure>pure</measure>
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    <ffd:SubmissnTp contextRef="c0" id="ixv-198">S-3</ffd:SubmissnTp>
    <ffd:FormTp contextRef="c0" id="ixv-199">S-3</ffd:FormTp>
    <dei:EntityRegistrantName contextRef="c0" id="ixv-24">Momentus Inc.</dei:EntityRegistrantName>
    <ffd:PrevslyPdFlg contextRef="c1" id="ixv-200">false</ffd:PrevslyPdFlg>
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    <ffd:OfferingSctyTp contextRef="c3" id="ixv-209">Debt</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="c3" id="ixv-210">Debt Securities</ffd:OfferingSctyTitl>
    <ffd:Rule457oFlg contextRef="c3" id="ixv-211">true</ffd:Rule457oFlg>
    <ffd:PrevslyPdFlg contextRef="c4" id="ixv-212">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="c4" id="ixv-213">Other</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="c4" id="ixv-214">Warrants</ffd:OfferingSctyTitl>
    <ffd:Rule457oFlg contextRef="c4" id="ixv-215">true</ffd:Rule457oFlg>
    <ffd:PrevslyPdFlg contextRef="c5" id="ixv-216">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="c5" id="ixv-217">Other</ffd:OfferingSctyTp>
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    <ffd:Rule457oFlg contextRef="c5" id="ixv-219">true</ffd:Rule457oFlg>
    <ffd:PrevslyPdFlg contextRef="c6" id="ixv-220">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="c6" id="ixv-221">Unallocated (Universal) Shelf</ffd:OfferingSctyTp>
    <ffd:Rule457oFlg contextRef="c6" id="ixv-222">true</ffd:Rule457oFlg>
    <ffd:MaxAggtOfferingPric contextRef="c6" decimals="INF" id="ixv-223" unitRef="usd">200000000</ffd:MaxAggtOfferingPric>
    <ffd:FeeRate contextRef="c6" decimals="INF" id="ixv-224" unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:FeeAmt contextRef="c6" decimals="2" id="ixv-225" unitRef="usd">27620</ffd:FeeAmt>
    <ffd:TtlOfferingAmt contextRef="c0" decimals="INF" id="ixv-226" unitRef="usd">200000000</ffd:TtlOfferingAmt>
    <ffd:TtlFeeAmt contextRef="c0" decimals="2" id="ixv-227" unitRef="usd">27620</ffd:TtlFeeAmt>
    <ffd:TtlPrevslyPdAmt contextRef="c0" decimals="0" id="ixv-228" unitRef="usd">0</ffd:TtlPrevslyPdAmt>
    <ffd:TtlOffsetAmt contextRef="c0" decimals="0" id="ixv-229" unitRef="usd">0</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt contextRef="c0" decimals="2" id="ixv-230" unitRef="usd">27620</ffd:NetFeeAmt>
    <ffd:OfferingNote contextRef="c6" id="ixv-178">&lt;table style="border-spacing: 0px; border-collapse: collapse; width: 100%; font-size: 10pt;"&gt; &lt;tr style="height: 0px; font-size: 0px;"&gt;&lt;td style="width: 1%;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 99%;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="vertical-align: top;"&gt; &lt;td style="padding: 0px 0pt;"&gt; &lt;div style="margin-bottom: 4pt;"&gt; (2) &lt;/div&gt; &lt;/td&gt; &lt;td style="padding: 0px 5.4pt; text-align: justify;"&gt; &lt;div style="margin-bottom: 4pt;"&gt; There are being registered pursuant to the
registration statement such indeterminate number of (a) shares of Common Stock,
(b) shares of Preferred Stock, (c) warrants to purchase Common Stock or
Preferred Stock of the Registrant, (d) subscription rights to purchase Common
Stock, Preferred Stock, warrants or units consisting of some or all of these
securities of the Registrant, and (e) units consisting of some or all of these
securities, as may be offered from time to time pursuant to the prospectus
contained in the Registration Statement with an aggregate initial offering
price not to exceed $200,000,000, or the equivalent thereof in foreign
currencies.&lt;br/&gt;&lt;br/&gt;The proposed maximum per unit and aggregate
offering prices per class of securities will be determined from time to time by
the Registrant in connection with the issuance by the Registrant of the
securities registered under the Registration Statement and is not specified as
to each class of security pursuant to Instruction 2.A.iii.b of the Instructions
to the Calculation of Filing Fee Tables and Related Disclosure of Form S-3.&lt;br/&gt;&lt;br/&gt;The registration fee has been calculated in
accordance with Rule 457(o) under the Securities Act.&lt;br/&gt;&lt;br/&gt;Any securities registered under the Registration
Statement may be sold separately or as units with other securities registered
under the Registration Statement. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</ffd:OfferingNote>
    <ffd:CombinedProspectusTableNa contextRef="c0" id="ixv-233">N/A</ffd:CombinedProspectusTableNa>
    <dei:EntityCentralIndexKey contextRef="c0" id="ixv-234">0001781162</dei:EntityCentralIndexKey>
    <ffd:FeeExhibitTp contextRef="c0" id="ixv-235">EX-FILING FEES</ffd:FeeExhibitTp>
    <ffd:OffsetTableNa contextRef="c0" id="ixv-236">N/A</ffd:OffsetTableNa>
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