<SEC-DOCUMENT>0000949157-20-000098-index.html : 20200702
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<ACCEPTANCE-DATETIME>20200702081902
ACCESSION NUMBER:		0000949157-20-000098
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		18
CONFORMED PERIOD OF REPORT:	20200701
ITEM INFORMATION:		Entry into a Material Definitive Agreement
ITEM INFORMATION:		Termination of a Material Definitive Agreement
ITEM INFORMATION:		Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20200702
DATE AS OF CHANGE:		20200702

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CENTURY ALUMINUM CO
		CENTRAL INDEX KEY:			0000949157
		STANDARD INDUSTRIAL CLASSIFICATION:	PRIMARY PRODUCTION OF ALUMINUM [3334]
		IRS NUMBER:				133070826
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34474
		FILM NUMBER:		201007258

	BUSINESS ADDRESS:	
		STREET 1:		1 SOUTH WACKER DRIVE
		STREET 2:		SUITE 1000
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		3126963101

	MAIL ADDRESS:	
		STREET 1:		1 SOUTH WACKER DRIVE
		STREET 2:		SUITE 1000
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
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<FILENAME>form8k-closingofnoteso.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: form8k-closingofnoteso.htm

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<DOCUMENT>
<TYPE>EX-4.1
<SEQUENCE>2
<FILENAME>cenx-indenturexjune2020.htm
<DESCRIPTION>EXHIBIT 4.1 - CENX INDENTURE
<TEXT>
Document 2 - file: cenx-indenturexjune2020.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.1
<SEQUENCE>3
<FILENAME>securityagreement.htm
<DESCRIPTION>EXHIBIT 10.1 - SECOND LIEN PLEDGE AND SECURITY AGREEMENT
<TEXT>
Document 3 - file: securityagreement.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.2
<SEQUENCE>4
<FILENAME>collateralagencyagreement2.htm
<DESCRIPTION>EXHIBIT 10.2 - COLLATERAL AGENCY AGREEMENT
<TEXT>
Document 4 - file: collateralagencyagreement2.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.SCH
<SEQUENCE>5
<FILENAME>cenx-20200701.xsd
<DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
<TEXT>
Document 5 - file: cenx-20200701.xsd

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<DOCUMENT>
<TYPE>EX-101.CAL
<SEQUENCE>6
<FILENAME>cenx-20200701_cal.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT
<TEXT>
Document 6 - file: cenx-20200701_cal.xml

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<DOCUMENT>
<TYPE>EX-101.DEF
<SEQUENCE>7
<FILENAME>cenx-20200701_def.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT
<TEXT>
Document 7 - file: cenx-20200701_def.xml

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<TYPE>EX-101.LAB
<SEQUENCE>8
<FILENAME>cenx-20200701_lab.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
<TEXT>
Document 8 - file: cenx-20200701_lab.xml

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<DOCUMENT>
<TYPE>EX-101.PRE
<SEQUENCE>9
<FILENAME>cenx-20200701_pre.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
<TEXT>
Document 9 - file: cenx-20200701_pre.xml

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<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>centuryheaderlogoa5512.jpg
<TEXT>
Document 10 - file: centuryheaderlogoa5512.jpg

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<TYPE>XML
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<FILENAME>form8k-closingofnoteso_htm.xml
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Document 11 - file: form8k-closingofnoteso_htm.html

Document 11 - RAW XML: form8k-closingofnoteso_htm.xml

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<DOCUMENT>
<TYPE>XML
<SEQUENCE>12
<FILENAME>R1.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 12 - file: R1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EXCEL
<SEQUENCE>13
<FILENAME>Financial_Report.xlsx
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 13 - file: Financial_Report.xlsx

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>14
<FILENAME>Show.js
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 14 - file: Show.js

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>15
<FILENAME>report.css
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 15 - file: report.css

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>16
<FILENAME>FilingSummary.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 16 - file: FilingSummary.html

Document 16 - RAW XML: FilingSummary.xml

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<DOCUMENT>
<TYPE>JSON
<SEQUENCE>18
<FILENAME>MetaLinks.json
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 18 - file: MetaLinks.json

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<DOCUMENT>
<TYPE>ZIP
<SEQUENCE>19
<FILENAME>0000949157-20-000098-xbrl.zip
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<TEXT>
Document 19 - file: 0000949157-20-000098-xbrl.zip

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