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Retirement Plans - Defined Benefit Plans (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
facility
Dec. 31, 2013
Retirement plans    
Number of active plants at which a defined benefit pension plan for current and former hourly employees is provided 4tpx_DefinedBenefitPlanNumberOfActivePlants  
Number of previously closed U.S. facilities at which a defined benefit pension plan for current and former hourly employees was provided 8tpx_DefinedBenefitPlanNumberOfPreviouslyClosedUSFacilities  
Components of net periodic pension cost for employees    
Service cost $ 0.9us-gaap_DefinedBenefitPlanServiceCost $ 0.9us-gaap_DefinedBenefitPlanServiceCost
Interest cost 1.8us-gaap_DefinedBenefitPlanInterestCost 1.3us-gaap_DefinedBenefitPlanInterestCost
Expected return on assets (2.1)us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets (1.5)us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets
Curtailment loss 0.1us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments 0us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments
Amortization of net gain (0.1)us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses 0us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses
Other changes in plan assets and benefit obligations recognized in accumulated other comprehensive income    
Net loss (gain) 9.0us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax (6.2)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax
Amortization of prior service cost (0.2)us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax 1.0us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax
Amortization of net gain 0.1us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax 0us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax
New prior service cost 0.1us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax 0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax
Total recognized in other comprehensive income 9.0us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax (5.2)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax
Assumptions, calculated on a weighted-average basis, were used to determine pension costs    
Discount rate 4.01%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate [1] 4.23%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate [1]
Expected long term return on plan assets 7.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets 6.92%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
Change in Benefit Obligation:    
Projected benefit obligation at beginning of year 36.4us-gaap_DefinedBenefitPlanBenefitObligation 39.9us-gaap_DefinedBenefitPlanBenefitObligation
Service cost 0.9us-gaap_DefinedBenefitPlanServiceCost 0.9us-gaap_DefinedBenefitPlanServiceCost
Interest cost 1.8us-gaap_DefinedBenefitPlanInterestCost 1.3us-gaap_DefinedBenefitPlanInterestCost
Plan changes 0.2us-gaap_DefinedBenefitPlanPlanAmendments 0.5us-gaap_DefinedBenefitPlanPlanAmendments
Actuarial loss (gain) 9.2us-gaap_DefinedBenefitPlanActuarialGainLoss (4.8)us-gaap_DefinedBenefitPlanActuarialGainLoss
Curtailments (0.1)us-gaap_DefinedBenefitPlanCurtailments 0us-gaap_DefinedBenefitPlanCurtailments
Benefits paid (0.7)us-gaap_DefinedBenefitPlanBenefitsPaid (0.5)us-gaap_DefinedBenefitPlanBenefitsPaid
Expenses paid (0.2)tpx_DefinedBenefitPlanExpensesPaid (0.3)tpx_DefinedBenefitPlanExpensesPaid
Foreign currency exchange rate changes (0.4)us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation (0.6)us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation
Projected benefit obligation at end of year 47.1us-gaap_DefinedBenefitPlanBenefitObligation 36.4us-gaap_DefinedBenefitPlanBenefitObligation
Change in Plan Assets:    
Fair value of plan assets at beginning of year 30.5us-gaap_DefinedBenefitPlanFairValueOfPlanAssets 26.2us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Actual return on assets 2.2us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets 2.9us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets
Employer contribution 1.0us-gaap_DefinedBenefitPlanContributionsByEmployer 2.8us-gaap_DefinedBenefitPlanContributionsByEmployer
Plan settlements 0us-gaap_DefinedBenefitPlanSettlementsPlanAssets (0.4)us-gaap_DefinedBenefitPlanSettlementsPlanAssets
Benefits paid (0.7)us-gaap_DefinedBenefitPlanBenefitsPaid (0.5)us-gaap_DefinedBenefitPlanBenefitsPaid
Expenses paid (0.2)tpx_DefinedBenefitPlanExpensesPaid (0.3)tpx_DefinedBenefitPlanExpensesPaid
Foreign currency exchange rate changes (0.3)us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesPlanAssets (0.2)us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesPlanAssets
Fair value of plan assets at end of year 32.5us-gaap_DefinedBenefitPlanFairValueOfPlanAssets 30.5us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Funded status (14.6)us-gaap_DefinedBenefitPlanFundedStatusOfPlan (5.9)us-gaap_DefinedBenefitPlanFundedStatusOfPlan
Amounts recognized in the Consolidated Balance Sheets:    
Non-current portion of benefit liability 14.9us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent 6.7us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
Non-current benefit asset 0.3us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent 0.8us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
Accumulated other comprehensive income 9.0us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax (5.2)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
Assumptions, calculated on a weighted-average basis, were used to determine benefit obligations    
Discount rate (percentage) 5.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate [2] 5.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate [2]
Continuing Operations    
Components of net periodic pension cost for employees    
Net periodic pension cost 0.6us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost
/ us-gaap_StatementOperatingActivitiesSegmentAxis
= us-gaap_SegmentContinuingOperationsMember
0.7us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost
/ us-gaap_StatementOperatingActivitiesSegmentAxis
= us-gaap_SegmentContinuingOperationsMember
Sealy    
Retirement plans    
Ownership interest (percentage) 100.00%tpx_SubsidiaryOwnershipPercentage
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
 
Number of facilities where employees are covered by defined benefit pension plan 1tpx_DefinedBenefitPlanNumberOfFacilities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
 
United States Retirement Plan    
Assumptions, calculated on a weighted-average basis, were used to determine pension costs    
Discount rate 3.94%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
4.25%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
Assumptions, calculated on a weighted-average basis, were used to determine benefit obligations    
Discount rate (percentage) 5.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
 
United States Retirement Plan | Sealy    
Change in Benefit Obligation:    
Projected benefit obligation at end of year 43.7us-gaap_DefinedBenefitPlanBenefitObligation
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
33.3us-gaap_DefinedBenefitPlanBenefitObligation
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Change in Plan Assets:    
Fair value of plan assets at end of year 28.8us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
26.7us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Canadian Retirement Plan    
Assumptions, calculated on a weighted-average basis, were used to determine pension costs    
Discount rate 5.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember
4.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember
Assumptions, calculated on a weighted-average basis, were used to determine benefit obligations    
Discount rate (percentage) 5.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember
 
Canadian Retirement Plan | Sealy    
Change in Benefit Obligation:    
Projected benefit obligation at end of year 3.4us-gaap_DefinedBenefitPlanBenefitObligation
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
3.1us-gaap_DefinedBenefitPlanBenefitObligation
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Change in Plan Assets:    
Fair value of plan assets at end of year $ 3.7us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
$ 3.8us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
[1] Due to current economic differences in the interest rates in the jurisdictions of the retirement plans, the discount rates used in 2014 to determine the expenses for the United States retirement plan and Canadian retirement plan were 3.94% and 5.00%, respectively. The discount rates used in 2013 to determine the expenses for the United States retirement plan and Canadian retirement plan were 4.25% and 4.00%, respectively.
[2] The discount rates used in 2014 and 2013 to determine the benefit obligations for the United States defined benefit pension plan and Canadian defined benefit pension plan were both 5.00%.