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SUPPLEMENTAL GUARANTOR FINANCIAL INFORMATION (Detail Textuals) $ in Millions | Oct. 05, 2015 USD ($)
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2023 Notes |
Business Acquisition [Line Items] |
2023 Senior Notes | $ 720.0
2025 Notes |
Business Acquisition [Line Items] |
2025 Senior Notes | $ 500.0

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- Definition 9.75% senior notes due 2023 that were issued on the Closing Date of the Transactions. + References No definition available. + Details
Name: | olin_A2023SeniorNotes
Namespace Prefix: | olin_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition 10.00% senior notes due 2025 that were issued on the Closing Date of the Transactions. + References No definition available. + Details
Name: | olin_A2025SeniorNotes
Namespace Prefix: | olin_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_DebtInstrumentAxis=olin_A2023NotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DebtInstrumentAxis=olin_A2025NotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |