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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 JIAs5Yjxxe1+/ekGGmqBhRUtKeDTJJhGZDIFTuVYkty3iBmD8sY4auPHb+gkq0gg
 cMi6fq0uv5zUuIjo50QGMA==

<SEC-DOCUMENT>0000054480-10-000044.txt : 20100216
<SEC-HEADER>0000054480-10-000044.hdr.sgml : 20100215
<ACCEPTANCE-DATETIME>20100216104059
ACCESSION NUMBER:		0000054480-10-000044
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100212
FILED AS OF DATE:		20100216
DATE AS OF CHANGE:		20100216

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Zozaya Delano Jose Guillermo
		CENTRAL INDEX KEY:			0001428623

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-04717
		FILM NUMBER:		10603210

	MAIL ADDRESS:	
		STREET 1:		MONTES URALES NO 625
		STREET 2:		COL LOMAS DE CHAPULTEPEC
		CITY:			MEXICO DF
		STATE:			O5
		ZIP:			11000

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			KANSAS CITY SOUTHERN
		CENTRAL INDEX KEY:			0000054480
		STANDARD INDUSTRIAL CLASSIFICATION:	RAILROADS, LINE-HAUL OPERATING [4011]
		IRS NUMBER:				440663509
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		427 W 12TH STREET
		CITY:			KANSAS CITY
		STATE:			MO
		ZIP:			64105
		BUSINESS PHONE:		8169831303

	MAIL ADDRESS:	
		STREET 1:		PO BOX 219335
		CITY:			KANSAS CITY
		STATE:			MO
		ZIP:			64121

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	KANSAS CITY SOUTHERN INDUSTRIES INC
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-02-12</periodOfReport>

    <issuer>
        <issuerCik>0000054480</issuerCik>
        <issuerName>KANSAS CITY SOUTHERN</issuerName>
        <issuerTradingSymbol>KSU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001428623</rptOwnerCik>
            <rptOwnerName>Zozaya Delano Jose Guillermo</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>KANSAS CITY SOUTHERN</rptOwnerStreet1>
            <rptOwnerStreet2>PO BOX 219335</rptOwnerStreet2>
            <rptOwnerCity>KANSAS CITY</rptOwnerCity>
            <rptOwnerState>MO</rptOwnerState>
            <rptOwnerZipCode>64121</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President &amp; Exec Rep of Sub</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-02-12</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>32.75</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>49154</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Brian P. Banks, Attorney-in-fact</signatureName>
        <signatureDate>2010-02-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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