    <SEC-DOCUMENT>0000277948-18-000003-index.html : 20180116
    <SEC-HEADER>0000277948-18-000003.hdr.sgml : 20180116
    <ACCEPTANCE-DATETIME>20180116160133
    ACCESSION NUMBER:		0000277948-18-000003
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		7
    CONFORMED PERIOD OF REPORT:	20180116
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20180116
    DATE AS OF CHANGE:		20180116

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			CSX CORP
    		CENTRAL INDEX KEY:			0000277948
    		STANDARD INDUSTRIAL CLASSIFICATION:	RAILROADS, LINE-HAUL OPERATING [4011]
    		IRS NUMBER:				621051971
    		STATE OF INCORPORATION:			VA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-08022
    		FILM NUMBER:		18528621

    	BUSINESS ADDRESS:
    		STREET 1:		500 WATER STREET
    		STREET 2:		15TH FLOOR
    		CITY:			JACKSONVILLE
    		STATE:			FL
    		ZIP:			32202
    		BUSINESS PHONE:		9043593200

    	MAIL ADDRESS:
    		STREET 1:		500 WATER STREET
    		STREET 2:		15TH FLOOR
    		CITY:			JACKSONVILLE
    		STATE:			FL
    		ZIP:			32202
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>form8kq42017.htm
    <DESCRIPTION>Q4 2017 FORM 8-K
    <TEXT>
    Document 1 - file: form8kq42017.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>pressrelease_q42017.htm
    <DESCRIPTION>EXHIBIT 99.1
    <TEXT>
    Document 2 - file: pressrelease_q42017.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>qfr_q42017.htm
    <DESCRIPTION>Q4 2017 QUARTERLY FINANCIAL REPORT
    <TEXT>
    Document 3 - file: qfr_q42017.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>csxlogoq42017.jpg
    <DESCRIPTION>FORM 8-K LOGO
    <TEXT>
    Document 4 - file: csxlogoq42017.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>q42017financialreportcover.jpg
    <DESCRIPTION>Q4 2017 QFR COVER
    <TEXT>
    Document 5 - file: q42017financialreportcover.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>qfrbannerq42017.jpg
    <DESCRIPTION>EXHIBIT 99.2 BANNER
    <TEXT>
    Document 6 - file: qfrbannerq42017.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>qfrpressreleasebannerq42017.jpg
    <DESCRIPTION>EXHIBIT 99.1 BANNER
    <TEXT>
    Document 7 - file: qfrpressreleasebannerq42017.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>