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Pension (Contributions to Pension Plans) (Details) (USD $)
In Thousands, unless otherwise specified
1 Months Ended 12 Months Ended
May 31, 2012
Dec. 31, 2014
Dec. 31, 2013
Defined Benefit Pension Plans and SERP      
Defined Benefit Plan Disclosure [Line Items]      
Estimated contributions in 2015   $ 4,688us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInNextFiscalYear
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= lby_DefinedBenefitPensionPlansAndSupplementalEmployeeRetirementPlansMember
 
Employer contributions   6,361us-gaap_DefinedBenefitPlanContributionsByEmployer
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= lby_DefinedBenefitPensionPlansAndSupplementalEmployeeRetirementPlansMember
7,496us-gaap_DefinedBenefitPlanContributionsByEmployer
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= lby_DefinedBenefitPensionPlansAndSupplementalEmployeeRetirementPlansMember
U.S. Plans      
Defined Benefit Plan Disclosure [Line Items]      
Estimated contributions in 2015   95us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInNextFiscalYear
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= lby_UnitedStatesPensionPlansOfUsEntityAndSupplementalEmployeeRetirementPlanDefinedBenefitMember
 
Employer contributions 79,700us-gaap_DefinedBenefitPlanContributionsByEmployer
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= lby_UnitedStatesPensionPlansOfUsEntityAndSupplementalEmployeeRetirementPlanDefinedBenefitMember
2,653us-gaap_DefinedBenefitPlanContributionsByEmployer
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= lby_UnitedStatesPensionPlansOfUsEntityAndSupplementalEmployeeRetirementPlanDefinedBenefitMember
75us-gaap_DefinedBenefitPlanContributionsByEmployer
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= lby_UnitedStatesPensionPlansOfUsEntityAndSupplementalEmployeeRetirementPlanDefinedBenefitMember
Non-U.S. Plans      
Defined Benefit Plan Disclosure [Line Items]      
Estimated contributions in 2015   4,593us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInNextFiscalYear
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember
 
Employer contributions   $ 3,708us-gaap_DefinedBenefitPlanContributionsByEmployer
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember
$ 7,421us-gaap_DefinedBenefitPlanContributionsByEmployer
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember