<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2020-01-01</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001265131</issuerCik>
        <issuerName>Hilltop Holdings Inc.</issuerName>
        <issuerTradingSymbol>HTH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002087850</rptOwnerCik>
            <rptOwnerName>Thompson Steve B</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>6565 HILLCREST AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75205</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>PrimeLending President and CEO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>28362.00</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Includes 3,026 shares that are subject to restrictions on sale until April 1, 2020.  Also includes 2,893, 4,000, 5,000 and 5,014 restricted stock units granted to the reporting person on April 14, 2017, April 26, 2018, February 27, 2019 and January 1, 2020, respectively. Such restricted stock units will vest, and an equal number of shares of common stock will be deliverable to the reporting person, upon the third anniversary of the respective date of grant, or immediately upon the earlier occurrence of events specified in the reporting person's restricted stock unit award agreement, including a &quot;change in control&quot; of Hilltop Holdings Inc.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Corey G. Prestidge, Attorney-in-Fact for Steve B Thompson</signatureName>
        <signatureDate>2025-09-25</signatureDate>
    </ownerSignature>
</ownershipDocument>
