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Employee Benefit Plans - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | Jun. 30, 2014
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Defined Benefit Pension Plans |
Defined Benefit Plan Disclosure [Line Items] |
Expected contribution | $ 27.4
OPEB |
Defined Benefit Plan Disclosure [Line Items] |
Expected contribution | $ 1.5

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- Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Defined benefit plan estimated employer contributions in current fiscal year. + References No definition available. + Details
Name: | vhi_DefinedBenefitPlanEstimatedEmployerContributionsInCurrentFiscalYear
Namespace Prefix: | vhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant