XML 95 R78.htm IDEA: XBRL DOCUMENT
v3.24.0.1

PENSION PLANS (Details 6) | 12 Months Ended
--- | ---
Dec. 31, 2023
Long-term rate of return assumption by asset class [Abstract] |
U.S. equities, minimum | 7.00%
U.S. equities, maximum | 11.00%
Non-U.S. equities, minimum | 8.00%
Non-U.S. equities, maximum | 12.00%
Fixed income/cash, minimum | 3.00%
Fixed income/cash, maximum | 7.00%
Alternative investments, minimum | 5.00%
Alternative investments, maximum | 15.00%

X
- Definition Rate of return maximum percentage of investments in alternate investments to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position. + References No definition available. + Details
Name: | oln_DefinedBenefitPlanRateOfReturnPercentageOfAssetsAlternateInvestmentRangeMaximum
Namespace Prefix: | oln_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Rate of return minimum percentage of investments in alternate investments to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position. + References No definition available. + Details
Name: | oln_DefinedBenefitPlanRateOfReturnPercentageOfAssetsAlternateInvestmentRangeMinimum
Namespace Prefix: | oln_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Rate of return maximum percentage of investments in fixed income/cash to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position. + References No definition available. + Details
Name: | oln_DefinedBenefitPlanRateOfReturnPercentageOfAssetsFixedIncomeCashRangeMaximum
Namespace Prefix: | oln_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Rate of return minimum percentage of investments in fixed income/cash to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position. + References No definition available. + Details
Name: | oln_DefinedBenefitPlanRateOfReturnPercentageOfAssetsFixedIncomeCashRangeMinimum
Namespace Prefix: | oln_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Rate of return maximum percentage of investments in non-U. S. equities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position. + References No definition available. + Details
Name: | oln_DefinedBenefitPlanRateOfReturnPercentageOfAssetsNonUSEquitiesRangeMaximum
Namespace Prefix: | oln_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Rate of return minimum percentage of investments in non-U. S. equities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position. + References No definition available. + Details
Name: | oln_DefinedBenefitPlanRateOfReturnPercentageOfAssetsNonUSEquitiesRangeMinimum
Namespace Prefix: | oln_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Rate of return maximum percentage of investments in U. S. equities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position. + References No definition available. + Details
Name: | oln_DefinedBenefitPlanRateOfReturnPercentageOfAssetsUSEquitiesRangeMaximum
Namespace Prefix: | oln_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Rate of return minimum percentage of investments in U. S. equities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position. + References No definition available. + Details
Name: | oln_DefinedBenefitPlanRateOfReturnPercentageOfAssetsUSEquitiesRangeMinimum
Namespace Prefix: | oln_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

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