    <SEC-DOCUMENT>0000931148-23-000163-index.html : 20231114
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    <ACCEPTANCE-DATETIME>20231114163259
    ACCESSION NUMBER:		0000931148-23-000163
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		42
    CONFORMED PERIOD OF REPORT:	20231109
    ITEM INFORMATION:		Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20231114
    DATE AS OF CHANGE:		20231114

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			GRAFTECH INTERNATIONAL LTD
    		CENTRAL INDEX KEY:			0000931148
    		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRICAL INDUSTRIAL APPARATUS [3620]
    		IRS NUMBER:				272496053
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-13888
    		FILM NUMBER:		231407119

    	BUSINESS ADDRESS:
    		STREET 1:		982 KEYNOTE CIRCLE
    		CITY:			BROOKLYN HEIGHTS
    		STATE:			OH
    		ZIP:			44131
    		BUSINESS PHONE:		2166762000

    	MAIL ADDRESS:
    		STREET 1:		982 KEYNOTE CIRCLE
    		CITY:			BROOKLYN HEIGHTS
    		STATE:			OH
    		ZIP:			44131

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	UCAR INTERNATIONAL INC
    		DATE OF NAME CHANGE:	19941011
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>gti-20231109.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: gti-20231109.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-3.1
    <SEQUENCE>2
    <FILENAME>exhibit31bylaws.htm
    <DESCRIPTION>EX-3.1
    <TEXT>
    Document 2 - file: exhibit31bylaws.htm

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    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>3
    <FILENAME>gti-20231109.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
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    Document 3 - file: gti-20231109.xsd

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>exhibit31bylaws001.jpg
    <TEXT>
    Document 6 - file: exhibit31bylaws001.jpg

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    <SEQUENCE>7
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    <FILENAME>exhibit31bylaws004.jpg
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    <SEQUENCE>10
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    Document 10 - file: exhibit31bylaws005.jpg

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    <SEQUENCE>11
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    <DOCUMENT>
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    <SEQUENCE>13
    <FILENAME>exhibit31bylaws008.jpg
    <TEXT>
    Document 13 - file: exhibit31bylaws008.jpg

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    <SEQUENCE>17
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    Document 17 - file: exhibit31bylaws012.jpg

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    <SEQUENCE>18
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    <SEQUENCE>19
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    <SEQUENCE>20
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    <TEXT>
    Document 20 - file: exhibit31bylaws015.jpg

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    <SEQUENCE>21
    <FILENAME>exhibit31bylaws016.jpg
    <TEXT>
    Document 21 - file: exhibit31bylaws016.jpg

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    <SEQUENCE>22
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    <SEQUENCE>24
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    Document 25 - file: exhibit31bylaws020.jpg

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    <SEQUENCE>26
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    <SEQUENCE>27
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    <SEQUENCE>28
    <FILENAME>exhibit31bylaws023.jpg
    <TEXT>
    Document 28 - file: exhibit31bylaws023.jpg

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    <SEQUENCE>29
    <FILENAME>exhibit31bylaws024.jpg
    <TEXT>
    Document 29 - file: exhibit31bylaws024.jpg

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    <SEQUENCE>30
    <FILENAME>exhibit31bylaws025.jpg
    <TEXT>
    Document 30 - file: exhibit31bylaws025.jpg

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    <SEQUENCE>31
    <FILENAME>exhibit31bylaws026.jpg
    <TEXT>
    Document 31 - file: exhibit31bylaws026.jpg

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    <SEQUENCE>32
    <FILENAME>exhibit31bylaws027.jpg
    <TEXT>
    Document 32 - file: exhibit31bylaws027.jpg

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    <TYPE>GRAPHIC
    <SEQUENCE>33
    <FILENAME>exhibit31bylaws028.jpg
    <TEXT>
    Document 33 - file: exhibit31bylaws028.jpg

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    <DOCUMENT>
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    <SEQUENCE>34
    <FILENAME>gti-20231109_g1.jpg
    <TEXT>
    Document 34 - file: gti-20231109_g1.jpg

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    <SEQUENCE>35
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    <DESCRIPTION>IDEA: XBRL DOCUMENT
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    Document 35 - file: R1.htm

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    <TYPE>XML
    <SEQUENCE>36
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    Document 36 - file: gti-20231109_htm.html

    Document 36 - RAW XML: gti-20231109_htm.xml

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    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>37
    <FILENAME>Financial_Report.xlsx
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    Document 37 - file: Financial_Report.xlsx

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    <SEQUENCE>38
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    <SEQUENCE>39
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    <SEQUENCE>40
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    <SEQUENCE>42
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