XML 103 R89.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Employee Benefit Plans - Schedule of Aggregate Fair Value of Asset and Supplemental Asset Mix (Detail) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |
CMRT asset value | $ 672.4 | $ 637.8
CMRT asset mix | 100.00% | 100.00%
Total CMRT assets | 100.00% | 100.00%
Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
CMRT asset mix | 54.00% | 54.00%
Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
CMRT asset mix | 8.00% | 8.00%
Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
CMRT asset mix | 7.00% | 8.00%
Assets Not Subject to Fair Value Hierarchy |  |
Defined Benefit Plan Disclosure [Line Items] |  |
CMRT asset mix | 31.00% | 30.00%
Domestic Equities, Principally Publicly Traded |  |
Defined Benefit Plan Disclosure [Line Items] |  |
CMRT asset mix | 33.00% | 31.00%
International Equities, Principally Publicly Traded |  |
Defined Benefit Plan Disclosure [Line Items] |  |
CMRT asset mix | 25.00% | 22.00%
Fixed Income Securities, Principally Publicly Traded |  |
Defined Benefit Plan Disclosure [Line Items] |  |
CMRT asset mix | 31.00% | 36.00%
Privately Managed Limited Partnerships |  |
Defined Benefit Plan Disclosure [Line Items] |  |
CMRT asset mix | 4.00% | 5.00%
Hedge Funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
CMRT asset mix | 5.00% | 5.00%
Other, Primarily Cash |  |
Defined Benefit Plan Disclosure [Line Items] |  |
CMRT asset mix | 2.00% | 1.00%

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of CMRT plan assets attributable to the defined benefit pension plans to which two or more participating affiliates contribute. + References No definition available. + Details
Name: | vhi_CombinedMasterRetirementTrustAssetValue
Namespace Prefix: | vhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Actual allocation percentage of CMRT plan assets according to the asset category (domestic equities, international equities, fixed income securities, privately managed limited partnerships, other). + References No definition available. + Details
Name: | vhi_PercentageOfCombinedMasterRetirementTrustAssetMix
Namespace Prefix: | vhi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of combined master retirement trust assets. + References No definition available. + Details
Name: | vhi_PercentageOfCombinedMasterRetirementTrustAssets
Namespace Prefix: | vhi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=vhi_NotSubjectToFairValueHierarchyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=vhi_DomesticEquitiesPrincipallyPublicallyTradedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=vhi_InternationalEquitiesPrincipallyPublicallyTradedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=vhi_FixedIncomeSecuritiesPrincipallyPublicallyTradedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=vhi_PrivatelyManagedLimitedPartnershipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_HedgeFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CashAndCashEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |