XML 44 R33.htm IDEA: XBRL DOCUMENT
v3.10.0.1

ACCOUNTS RECEIVABLE (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2018
Receivables [Abstract] |
AR Facilities [Table Text Block] | The following table summarizes the AR Facilities activity:
| September 30,
| 2018 |  | 2017
| ($ in millions)
Balance at beginning of year | $ | 182.3 |  |  | $ | 126.1 |
Gross receivables sold | 1,199.8 |  |  | 1,224.1 |
Payments received from customers on sold accounts | (1,247.7 | ) |  | (1,162.9 | )
Balance at end of period | $ | 134.4 |  |  | $ | 187.3 |

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

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