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v2.4.1.9

Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Dec. 31, 2014 | Dec. 31, 2013
Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Foreign Currency Translation Adjustment, Net of Tax | $ (41.5)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax | $ (21.0)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax | $ (33.7)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax | $ (19.2)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
Pension and Other Postretirement Benefit Plans, Net of Tax | (97.4)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax | (69.0)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax | (99.0)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax | (70.3)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
Available-for-sale Securities Adjustment, Net of Tax | 2.6 us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax | 2.1 us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax | 2.6 us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax | 2.0 us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
Other, Net of Tax | (1.1)lpx_AccumulatedOtherComprehensiveIncomeLossOtherNetOfTax | (1.7)lpx_AccumulatedOtherComprehensiveIncomeLossOtherNetOfTax | (1.2)lpx_AccumulatedOtherComprehensiveIncomeLossOtherNetOfTax | (1.7)lpx_AccumulatedOtherComprehensiveIncomeLossOtherNetOfTax
Accumulated comprehensive loss | (137.4)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax | (89.6)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax | (131.3)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax | (89.2)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) | 0.1 us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit | 0 us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit |  |
Defined Benefit Plan, Amortization of Gains (Losses) | 1.8 us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses | 1.4 us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses |  |
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Transition Asset (Obligation), Recognized in Net Periodic Benefit Cost, before Tax | 0 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationBeforeTax | 0.4 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationBeforeTax |  |
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), before Tax | 1.9 us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax | 1.8 us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax |  |
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Transition Asset (Obligation), Recognized in Net Periodic Benefit Cost, Tax | 0.8 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationTax | 0.5 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationTax |  |
Foreign currency translation adjustments | (7.8)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax | (1.8)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax |  |
Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax | 0.5 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax | 2.6 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax |  |
Unrealized gain on marketable securities | 0 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax | 0.1 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax |  |
Other | 0.1 us-gaap_OtherComprehensiveIncomeOtherNetOfTax | 0 us-gaap_OtherComprehensiveIncomeOtherNetOfTax |  |
Other comprehensive income | (7.2)us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax | 0.9 us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax |  |
Pension and Other Postretirement Benefit Plans, Net Prior Service Costs Arising During Period, Net of Tax | 1.1 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax | (1.3)us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax |  |
Other comprehensive loss, net of tax | (6.1)lpx_OtherComprehensiveIncomeLossNetOfTaxIncludingRedeemableNonControllingInterest | (0.4)lpx_OtherComprehensiveIncomeLossNetOfTaxIncludingRedeemableNonControllingInterest |  |
Defined benefit pension plans | 1.6 us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax | 1.3 us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax |  |
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Net of Tax | 1.1 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax | 1.3 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax |  |
Pension Plan, Defined Benefit [Member] |  |  |  |
Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Defined benefit pension plans | $ 1.6 us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |  |  |

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- Definition Amount before tax of reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 + Details
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