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  xmlns:dei="http://xbrl.sec.gov/dei/2026"
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        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002110105</identifier>
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        <period>
            <startDate>2026-06-01</startDate>
            <endDate>2026-06-01</endDate>
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    <context id="offrl_1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002110105</identifier>
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            <startDate>2026-06-01</startDate>
            <endDate>2026-06-01</endDate>
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    <context id="offrl_2">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002110105</identifier>
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                <xbrldi:typedMember dimension="ffd:OfferingAxis">
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        </entity>
        <period>
            <startDate>2026-06-01</startDate>
            <endDate>2026-06-01</endDate>
        </period>
    </context>
    <unit id="USD">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="pure">
        <measure>pure</measure>
    </unit>
    <unit id="Shares">
        <measure>shares</measure>
    </unit>
    <ffd:FormTp contextRef="rc" id="ixv-342">S-1</ffd:FormTp>
    <ffd:SubmissnTp contextRef="rc" id="ixv-343">S-1/A</ffd:SubmissnTp>
    <ffd:FeeExhibitTp contextRef="rc" id="ixv-344">EX-FILING FEES</ffd:FeeExhibitTp>
    <ffd:RegnFileNb contextRef="rc" id="ixv-345">333-295701</ffd:RegnFileNb>
    <dei:EntityCentralIndexKey contextRef="rc" id="ixv-346">0002110105</dei:EntityCentralIndexKey>
    <dei:EntityRegistrantName contextRef="rc" id="ixv-347">Quantinuum Inc.</dei:EntityRegistrantName>
    <ffd:OfferingTableNa contextRef="rc" id="hiddenrcOfferingTableNa" xsi:nil="true"/>
    <ffd:OffsetTableNa contextRef="rc" id="hiddenrcOffsetTableNa">N/A</ffd:OffsetTableNa>
    <ffd:CombinedProspectusTableNa contextRef="rc" id="hiddenrcCombinedProspectusTableNa">N/A</ffd:CombinedProspectusTableNa>
    <ffd:FormTp contextRef="rc" id="ixv-384">S-1</ffd:FormTp>
    <dei:EntityRegistrantName contextRef="rc" id="ixv-385">Quantinuum Inc.</dei:EntityRegistrantName>
    <ffd:PrevslyPdFlg contextRef="offrl_1" id="ixv-386">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="offrl_1" id="ixv-387">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_1" id="ixv-388">Class A Common Stock, $0.0001 par value per share</ffd:OfferingSctyTitl>
    <ffd:Rule457aFlg contextRef="offrl_1" id="ixv-389">true</ffd:Rule457aFlg>
    <ffd:AmtSctiesRegd
      contextRef="offrl_1"
      decimals="0"
      id="ixv-390"
      unitRef="Shares">8465431</ffd:AmtSctiesRegd>
    <ffd:MaxOfferingPricPerScty
      contextRef="offrl_1"
      decimals="2"
      id="ixv-391"
      unitRef="USD">55.00</ffd:MaxOfferingPricPerScty>
    <ffd:MaxAggtOfferingPric
      contextRef="offrl_1"
      decimals="2"
      id="ixv-392"
      unitRef="USD">465598705.00</ffd:MaxAggtOfferingPric>
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      contextRef="offrl_1"
      decimals="7"
      id="ixv-393"
      unitRef="pure">0.0001381</ffd:FeeRate>
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      contextRef="offrl_1"
      decimals="2"
      id="ixv-394"
      unitRef="USD">64299.18</ffd:FeeAmt>
    <ffd:PrevslyPdFlg contextRef="offrl_2" id="ixv-395">true</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="offrl_2" id="ixv-396">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_2" id="ixv-397">Class A Common Stock, $0.0001 par value per share </ffd:OfferingSctyTitl>
    <ffd:Rule457aFlg contextRef="offrl_2" id="ixv-398">true</ffd:Rule457aFlg>
    <ffd:AmtSctiesRegd
      contextRef="offrl_2"
      decimals="0"
      id="ixv-399"
      unitRef="Shares">24210526</ffd:AmtSctiesRegd>
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      contextRef="offrl_2"
      decimals="2"
      id="ixv-400"
      unitRef="USD">50.00</ffd:MaxOfferingPricPerScty>
    <ffd:MaxAggtOfferingPric
      contextRef="offrl_2"
      decimals="2"
      id="ixv-401"
      unitRef="USD">1210526300.00</ffd:MaxAggtOfferingPric>
    <ffd:FeeAmt
      contextRef="offrl_2"
      decimals="2"
      id="ixv-402"
      unitRef="USD">167173.68</ffd:FeeAmt>
    <ffd:TtlOfferingAmt contextRef="rc" decimals="2" id="ixv-403" unitRef="USD">1676125005.00</ffd:TtlOfferingAmt>
    <ffd:TtlFeeAmt contextRef="rc" decimals="2" id="ixv-404" unitRef="USD">231472.86</ffd:TtlFeeAmt>
    <ffd:TtlPrevslyPdAmt contextRef="rc" decimals="2" id="ixv-405" unitRef="USD">167173.68</ffd:TtlPrevslyPdAmt>
    <ffd:TtlOffsetAmt contextRef="rc" decimals="2" id="ixv-406" unitRef="USD">0.00</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt contextRef="rc" decimals="2" id="ixv-407" unitRef="USD">64299.18</ffd:NetFeeAmt>
    <ffd:OfferingNote contextRef="offrl_1" id="ixv-408">1(a). Estimated solely for the purpose of computing the amount of the registration fee pursuant to Rule 457(a) under the Securities Act of 1933, as amended.
1(b). Includes the aggregate offering price of additional shares that the underwriters have the option to purchase.</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="offrl_2" id="ixv-409">2(a). The Registrant previously paid a registration fee of $13,810.00 in connection with the initial filing of the Registration Statement on Form S-1 on May 8, 2026, and a registration fee of $153,363.68 in connection with the filing of Amendment No. 1 to the Registration Statement on May 26, 2026. The fee was estimated solely for the purpose of calculating the registration fee in accordance with Rule 457(o) under the Securities Act. This Maximum Aggregate Offering Price was originally registered under 457(o) and is now converted to 457(a).
2(b). See note 1(b) above.
</ffd:OfferingNote>
</xbrl>
