    <SEC-DOCUMENT>0000074303-25-000043-index.html : 20250306
    <SEC-HEADER>0000074303-25-000043.hdr.sgml : 20250306
    <ACCEPTANCE-DATETIME>20250306064236
    ACCESSION NUMBER:		0000074303-25-000043
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		16
    CONFORMED PERIOD OF REPORT:	20250305
    ITEM INFORMATION:		Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers
    ITEM INFORMATION:		Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20250306
    DATE AS OF CHANGE:		20250306

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			OLIN Corp
    		CENTRAL INDEX KEY:			0000074303
    		STANDARD INDUSTRIAL CLASSIFICATION:	CHEMICALS & ALLIED PRODUCTS [2800]
    		ORGANIZATION NAME:           	08 Industrial Applications and Services
    		IRS NUMBER:				131872319
    		STATE OF INCORPORATION:			VA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-01070
    		FILM NUMBER:		25713570

    	BUSINESS ADDRESS:
    		STREET 1:		OLIN CORPORATION
    		STREET 2:		190 CARONDELET PLAZA SUITE 1530
    		CITY:			CLAYTON
    		STATE:			MO
    		ZIP:			63105
    		BUSINESS PHONE:		3144801400

    	MAIL ADDRESS:
    		STREET 1:		OLIN CORPORATION
    		STREET 2:		190 CARONDELET PLAZA SUITE 1530
    		CITY:			CLAYTON
    		STATE:			MO
    		ZIP:			63105

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	OLIN CORP
    		DATE OF NAME CHANGE:	19920703

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	OLIN MATHIESON CHEMICAL CORP
    		DATE OF NAME CHANGE:	19691008
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>oln-20250305.htm
    <DESCRIPTION>FORM 8-K
    <TEXT>
    Document 1 - file: oln-20250305.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-3.1
    <SEQUENCE>2
    <FILENAME>exhibit31-bylawsxeffective.htm
    <DESCRIPTION>EX-3.1 BYLAWS AMENDED EFFECTIVE 03052025
    <TEXT>
    Document 2 - file: exhibit31-bylawsxeffective.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>3
    <FILENAME>exhibit991-newdirector.htm
    <DESCRIPTION>EX-99.1 PRESS RELEASE
    <TEXT>
    Document 3 - file: exhibit991-newdirector.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>4
    <FILENAME>oln-20250305.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 4 - file: oln-20250305.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>5
    <FILENAME>oln-20250305_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
    <TEXT>
    Document 5 - file: oln-20250305_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>6
    <FILENAME>oln-20250305_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
    Document 6 - file: oln-20250305_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>olinlogoa.jpg
    <DESCRIPTION>OLIN LOGO
    <TEXT>
    Document 7 - file: olinlogoa.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>9
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 9 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>10
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 10 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>11
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 11 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>12
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 12 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>14
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 14 - file: FilingSummary.html

    Document 14 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>16
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 16 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>17
    <FILENAME>0000074303-25-000043-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 17 - file: 0000074303-25-000043-xbrl.zip

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>18
    <FILENAME>oln-20250305_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 18 - file: oln-20250305_htm.html

    Document 18 - RAW XML: oln-20250305_htm.xml

    </DOCUMENT>
    </SEC-DOCUMENT>