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ACCOUNTS RECEIVABLES (Tables) | 12 Months Ended
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Dec. 31, 2023
Receivables [Abstract] |
AR Facilities | The following table summarizes the AR Facilities activity:
| December 31,
| 2023 |  | 2022
AR Facilities | ($ in millions)
Beginning balance | $ | 111.8 |  |  | $ | 83.3 |
Gross receivables sold | 899.0 |  |  | 1,049.7 |
Payments received from customers on sold accounts | (947.5) |  |  | (1,021.2) |
Ending balance | $ | 63.3 |  |  | $ | 111.8 |

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- Definition Tabular disclosure of activity under the accounts receivables factoring arrangements. + References No definition available. + Details
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Namespace Prefix: | oln_
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_ReceivablesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration