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Business Combinations, Discontinued Operations and Related Transactions - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended |  |
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Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Nov. 30, 2013
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Sale of furniture components segment |  |  |  |  |  |  |  |  |  | $ 58.0 us-gaap_ProceedsFromDivestitureOfBusinesses |  |
Gain on sale of discontinued operations |  |  |  |  |  |  |  |  |  | 23.7 us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax |  |
Net income (loss) per share | $ 0.03 us-gaap_EarningsPerShareBasicAndDiluted | $ 0.08 us-gaap_EarningsPerShareBasicAndDiluted | $ 0.05 us-gaap_EarningsPerShareBasicAndDiluted | $ 0.05 us-gaap_EarningsPerShareBasicAndDiluted | $ (0.10)us-gaap_EarningsPerShareBasicAndDiluted | $ (0.12)us-gaap_EarningsPerShareBasicAndDiluted | $ (0.12)us-gaap_EarningsPerShareBasicAndDiluted | $ 0.16 us-gaap_EarningsPerShareBasicAndDiluted | $ (0.29)us-gaap_EarningsPerShareBasicAndDiluted | $ 0.47 us-gaap_EarningsPerShareBasicAndDiluted |  |
Statutory income tax rate of foreign tax credit |  |  |  |  |  |  |  | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate |  |
Land held for development at an aggregate fair value | 165.1 us-gaap_RealEstateInvestmentPropertyNet |  |  | 158.1 us-gaap_RealEstateInvestmentPropertyNet |  |  |  | 165.1 us-gaap_RealEstateInvestmentPropertyNet | 158.1 us-gaap_RealEstateInvestmentPropertyNet |  |  |
Gain on bargain purchase and remeasurement of our existing investment in acquiree |  |  |  |  |  |  |  |  | 54.6 vhi_BusinessCombinationGainOnBargainPurchaseAndRemeasurementOfExistingInvestment |  |  |
Residential/Planned Community Purposes |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Land held for development |  |  |  | 2,100 us-gaap_AreaOfLand / us-gaap_RealEstatePropertiesAxis = us-gaap_ResidentialRealEstateMember |  |  |  |  | 2,100 us-gaap_AreaOfLand / us-gaap_RealEstatePropertiesAxis = us-gaap_ResidentialRealEstateMember |  |  |
Commercial and Light Industrial Use |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Land held for development |  |  |  | 400 us-gaap_AreaOfLand / us-gaap_RealEstatePropertiesAxis = us-gaap_CommercialRealEstateMember |  |  |  |  | 400 us-gaap_AreaOfLand / us-gaap_RealEstatePropertiesAxis = us-gaap_CommercialRealEstateMember |  |  |
Basic Management Inc. |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Equity ownership percentage |  |  |  | 32.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementMember |  |  |  |  | 32.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementMember |  |  |
Indirect controlling interest in subsidiary |  |  |  | 50.00%vhi_IndirectControllingInterestInSubsidiary / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementMember |  |  |  |  | 50.00%vhi_IndirectControllingInterestInSubsidiary / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementMember |  |  |
Business acquisition, percentage of voting interests acquired |  |  |  | 31.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementMember |  |  |  |  | 31.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementMember |  |  |
Controlling interest in subsidiary |  |  |  | 63.00%us-gaap_MinorityInterestOwnershipPercentageByParent / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementMember |  |  |  |  | 63.00%us-gaap_MinorityInterestOwnershipPercentageByParent / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementMember |  |  |
LandWell |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Equity ownership percentage |  |  |  | 12.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_BusinessAcquisitionAxis = vhi_LandwellMember |  |  |  |  | 12.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_BusinessAcquisitionAxis = vhi_LandwellMember |  |  |
Business acquisition, percentage of voting interests acquired |  |  |  | 15.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = vhi_LandwellMember |  |  |  |  | 15.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = vhi_LandwellMember |  |  |
Controlling interest in subsidiary |  |  |  | 27.00%us-gaap_MinorityInterestOwnershipPercentageByParent / us-gaap_BusinessAcquisitionAxis = vhi_LandwellMember |  |  |  |  | 27.00%us-gaap_MinorityInterestOwnershipPercentageByParent / us-gaap_BusinessAcquisitionAxis = vhi_LandwellMember |  |  |
LandWell | Aggregate General And Limited Interests |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Controlling interest in subsidiary by parent |  |  |  | 77.00%vhi_MinorityInterestControllingPercentageInSubsidiaryByParent / us-gaap_BusinessAcquisitionAxis = vhi_LandwellMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = vhi_AggregateGeneralAndLimitedInterestsMember |  |  |  |  | 77.00%vhi_MinorityInterestControllingPercentageInSubsidiaryByParent / us-gaap_BusinessAcquisitionAxis = vhi_LandwellMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = vhi_AggregateGeneralAndLimitedInterestsMember |  |  |
LandWell | General Partner |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Controlling interest in subsidiary |  |  |  | 50.00%us-gaap_MinorityInterestOwnershipPercentageByParent / us-gaap_BusinessAcquisitionAxis = vhi_LandwellMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_GeneralPartnerMember |  |  |  |  | 50.00%us-gaap_MinorityInterestOwnershipPercentageByParent / us-gaap_BusinessAcquisitionAxis = vhi_LandwellMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_GeneralPartnerMember |  |  |
Basic Management Inc And Landwell |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total fair value of consideration |  |  |  |  |  |  |  |  | 32.6 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember |  |  |
Fair value of consideration, cash |  |  |  |  |  |  |  |  | 5.3 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember |  |  |
Recognized pre-tax gain on business combination |  |  |  |  |  |  |  |  | 26.6 us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember |  |  |
Business acquisition estimated fair value |  |  |  |  |  |  |  |  | 43.4 us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1 / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember |  |  |
Business acquisition at carrying value |  |  |  | 16.8 us-gaap_EquityMethodInvestments / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember |  |  |  |  | 16.8 us-gaap_EquityMethodInvestments / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember |  |  |
Bargain purchase gain recognized |  |  |  |  |  |  |  |  | 28.0 us-gaap_BusinessCombinationBargainPurchaseGainRecognizedAmount / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember |  |  |
Land held for development at an aggregate fair value |  |  |  | 158.1 us-gaap_RealEstateInvestmentPropertyNet / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember |  |  |  |  | 158.1 us-gaap_RealEstateInvestmentPropertyNet / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember |  |  |
Gain on bargain purchase and remeasurement of our existing investment in acquiree |  |  |  |  |  |  |  |  | 54.6 vhi_BusinessCombinationGainOnBargainPurchaseAndRemeasurementOfExistingInvestment / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember |  |  |
Basic Management Inc And Landwell | Promissory Note |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Business combination consideration transferred, liabilities incurred |  |  |  |  |  |  |  |  | 19.1 us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember |  |  |
Interest on promissory note and deferred payment |  |  |  | 3.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember |  |  |  |  | 3.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember |  |  |
Principal prepayments of note |  |  |  |  |  |  |  | 1.7 us-gaap_RepaymentsOfNotesPayable / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember |  |  |  |
Basic Management Inc And Landwell | Face Value | Deferred Payment |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Business combination consideration transferred, liabilities incurred |  |  |  |  |  |  |  |  | 11.1 us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember / us-gaap_FinancialInstrumentAxis = vhi_DeferredPaymentMember / us-gaap_ValuationTechniqueAxis = vhi_FaceValueMember |  |  |
Business combination consideration transferred, deferred payment obligation |  |  |  | 11.1 vhi_DeferredPaymentObligationFairValueDisclosure / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember / us-gaap_FinancialInstrumentAxis = vhi_DeferredPaymentMember / us-gaap_ValuationTechniqueAxis = vhi_FaceValueMember |  |  |  |  | 11.1 vhi_DeferredPaymentObligationFairValueDisclosure / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember / us-gaap_FinancialInstrumentAxis = vhi_DeferredPaymentMember / us-gaap_ValuationTechniqueAxis = vhi_FaceValueMember |  |  |
Interest on promissory note and deferred payment |  |  |  | 3.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember / us-gaap_FinancialInstrumentAxis = vhi_DeferredPaymentMember / us-gaap_ValuationTechniqueAxis = vhi_FaceValueMember |  |  |  |  | 3.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember / us-gaap_FinancialInstrumentAxis = vhi_DeferredPaymentMember / us-gaap_ValuationTechniqueAxis = vhi_FaceValueMember |  |  |
Basic Management Inc And Landwell | Present Value | Deferred Payment |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Business combination consideration transferred, liabilities incurred |  |  |  |  |  |  |  |  | 8.2 us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember / us-gaap_FinancialInstrumentAxis = vhi_DeferredPaymentMember / us-gaap_ValuationTechniqueAxis = vhi_PresentValueMember |  |  |
Business combination consideration transferred, deferred payment obligation |  |  |  | 8.2 vhi_DeferredPaymentObligationFairValueDisclosure / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember / us-gaap_FinancialInstrumentAxis = vhi_DeferredPaymentMember / us-gaap_ValuationTechniqueAxis = vhi_PresentValueMember |  |  |  |  | 8.2 vhi_DeferredPaymentObligationFairValueDisclosure / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember / us-gaap_FinancialInstrumentAxis = vhi_DeferredPaymentMember / us-gaap_ValuationTechniqueAxis = vhi_PresentValueMember |  |  |
Discount rate |  |  |  |  |  |  |  |  | 3.00%us-gaap_FairValueInputsDiscountRate / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementIncAndLandwellMember / us-gaap_FinancialInstrumentAxis = vhi_DeferredPaymentMember / us-gaap_ValuationTechniqueAxis = vhi_PresentValueMember |  |  |
Certain Real Property and Option to Acquire Remaining Parcels |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Land held for development at an aggregate fair value |  |  |  | 14.9 us-gaap_RealEstateInvestmentPropertyNet / us-gaap_BusinessAcquisitionAxis = vhi_CertainRealPropertyAndOptionToAcquireRemainingParcelsMember |  |  |  |  | 14.9 us-gaap_RealEstateInvestmentPropertyNet / us-gaap_BusinessAcquisitionAxis = vhi_CertainRealPropertyAndOptionToAcquireRemainingParcelsMember |  |  |
Kronos Worldwide, Inc. |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of common stock |  |  |  |  |  |  |  |  |  |  | 2,000,000 us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased / dei_LegalEntityAxis = vhi_KronosMember |
Repurchased shares |  |  |  |  |  |  |  |  | 49,000 us-gaap_StockRepurchasedDuringPeriodShares / dei_LegalEntityAxis = vhi_KronosMember |  |  |
Repurchased shares, value |  |  |  |  |  |  |  |  | 0.7 us-gaap_StockRepurchasedDuringPeriodValue / dei_LegalEntityAxis = vhi_KronosMember |  |  |
Shares available for purchase | 1,950,000 us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased / dei_LegalEntityAxis = vhi_KronosMember |  |  |  |  |  |  | 1,950,000 us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased / dei_LegalEntityAxis = vhi_KronosMember |  |  |  |
Indirect controlling interest in subsidiary | 30.00%vhi_IndirectControllingInterestInSubsidiary / dei_LegalEntityAxis = vhi_KronosMember |  |  |  |  |  |  | 30.00%vhi_IndirectControllingInterestInSubsidiary / dei_LegalEntityAxis = vhi_KronosMember |  |  |  |
CompX | Taiwan Land |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Cash collected on notes receivable |  |  |  |  |  |  |  |  | 3.0 us-gaap_ProceedsFromCollectionOfNotesReceivable / dei_LegalEntityAxis = vhi_CompXMember / us-gaap_StatementGeographicalAxis = country_TW |  |  |
CompX | Discontinued operations |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Sale of furniture components segment |  |  |  |  |  |  |  |  |  | 58.0 us-gaap_ProceedsFromDivestitureOfBusinesses / dei_LegalEntityAxis = vhi_CompXMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember |  |
Gain on sale of discontinued operations |  |  |  |  |  |  |  |  |  | 23.7 us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax / dei_LegalEntityAxis = vhi_CompXMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember |  |
Gain on sale discontinued operations, net of tax |  |  |  |  |  |  |  |  |  | 15.7 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / dei_LegalEntityAxis = vhi_CompXMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember |  |
Net income (loss) per share |  |  |  |  |  |  |  |  |  | $ 0.05 us-gaap_EarningsPerShareBasicAndDiluted / dei_LegalEntityAxis = vhi_CompXMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember |  |
Reclassification out of AOCI, foreign currency translation adjustment |  |  |  |  |  |  |  |  |  | $ 10.4 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax / dei_LegalEntityAxis = vhi_CompXMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember |  |
CompX | Class A |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares available for purchase | 678,000 us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased / dei_LegalEntityAxis = vhi_CompXMember / us-gaap_ShareholdersEquityClassAxis = vhi_ClassACommonMember |  |  |  |  |  |  | 678,000 us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased / dei_LegalEntityAxis = vhi_CompXMember / us-gaap_ShareholdersEquityClassAxis = vhi_ClassACommonMember |  |  |  |
Entity One | Basic Management Inc. |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage |  |  |  |  |  |  |  |  |  |  |  | 32.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementMember / dei_LegalEntityAxis = vhi_EntityOneMember
Entity One | LandWell |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage |  |  |  |  |  |  |  |  |  |  |  | 21.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners / us-gaap_BusinessAcquisitionAxis = vhi_LandwellMember / dei_LegalEntityAxis = vhi_EntityOneMember
Nevada Environmental Response Trust | Basic Management Inc. |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage |  |  |  |  |  |  |  |  |  |  |  | 31.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementMember / dei_LegalEntityAxis = vhi_NevadaEnvironmentalResponseTrustMember
Nevada Environmental Response Trust | LandWell |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage |  |  |  |  |  |  |  |  |  |  |  | 15.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners / us-gaap_BusinessAcquisitionAxis = vhi_LandwellMember / dei_LegalEntityAxis = vhi_NevadaEnvironmentalResponseTrustMember
Entity Three | Basic Management Inc. |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage |  |  |  |  |  |  |  |  |  |  |  | 5.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners / us-gaap_BusinessAcquisitionAxis = vhi_BasicManagementMember / dei_LegalEntityAxis = vhi_EntityThreeMember
Entity Three | LandWell |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations Discontinued Operations And Related Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage |  |  |  |  |  |  |  |  |  |  |  | 2.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners / us-gaap_BusinessAcquisitionAxis = vhi_LandwellMember / dei_LegalEntityAxis = vhi_EntityThreeMember

X
- Definition Area of land held. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of gain recognized by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (f)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6571-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6527-128477 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6396-128476 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6387-128476 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6393-128476 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6405-128476 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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- Definition Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g)(2) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of gain (loss), before tax expense or benefit and not previously recognized, resulting from the sale of a business component. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
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- Definition Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
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- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. + References No definition available. + Details
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570 + Details
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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
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- Definition Amount before tax of reclassification adjustment from accumulated other comprehensive income for translation gain (loss) realized upon the sale or liquidation of an investment in a foreign entity and foreign currency hedges that are designated and qualified as hedging instruments for hedges of the foreign currency exposure of a net investment in a foreign operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e689-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e709-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32211-110900 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash inflow associated with principal collections from a borrowing supported by a written promise to pay an obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition The cash outflow for a borrowing supported by a written promise to pay an obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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- Definition Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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