XML 112 R85.htm IDEA: XBRL DOCUMENT v2.4.1.9
Retirement Plans and Post Retirement Benefits Defined Contribution Plans and Other Benefit Plans (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2009
Defined Contribution Plans [Abstract]        
Expenses related to defined contribution plans and multiemployer plan $ 5.6us-gaap_MultiemployerPlanPeriodContributions $ 8.3us-gaap_MultiemployerPlanPeriodContributions $ 5.2us-gaap_MultiemployerPlanPeriodContributions  
Funded status (96.1)us-gaap_DefinedBenefitPlanFundedStatusOfPlan (51.8)us-gaap_DefinedBenefitPlanFundedStatusOfPlan    
Deferred Compensation Arrangements [Abstract]        
Deferred compensation plan maximum deferral percentage 90.00%lpx_DeferredCompensationArrangementMaximumDeferralPercentage      
Deferred compensation plan, employer contributions and related earnings, maximum vesting period 5 years      
Deferred compensation liability included in "Other long-term liabilities" (2.1)us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent (1.9)us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent    
U.S. 401(k) Plans        
Defined Contribution Plans [Abstract]        
Maximum percentage of employee's wages eligible for company match       3.50%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= lpx_UnitedStatesDefinedContributionPlansMember
Shares of LP common stock included in plan assets 2.5us-gaap_DefinedBenefitPlanNumberOfSharesOfEquitySecuritiesIssuedByEmployerAndRelatedPartiesIncludedInPlanAssets
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= lpx_UnitedStatesDefinedContributionPlansMember
     
Total market value of plan assets represented by LP common stock 12.40%lpx_DefinedBenefitPlanPercentageOfEmployerAndRelatedPartySecuritiesIncludedInPlanAssets
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= lpx_UnitedStatesDefinedContributionPlansMember
     
Canada Defined Contribution Plans        
Defined Contribution Plans [Abstract]        
Maximum percentage of employee's wages eligible for company match 3.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= lpx_CanadaDefinedContributionPlansMember
     
Percentage of base contribution 2.50%lpx_DefinedContributionPlanBaseAnnualContributionPerEmployeePercent
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= lpx_CanadaDefinedContributionPlansMember
     
Employer matching percentage 50.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= lpx_CanadaDefinedContributionPlansMember
     
Other Postretirement Benefits        
Defined Contribution Plans [Abstract]        
Funded status $ 8.0us-gaap_DefinedBenefitPlanFundedStatusOfPlan
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
$ 8.2us-gaap_DefinedBenefitPlanFundedStatusOfPlan
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember