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Income taxes - Changes in Uncertain Tax Positions (Detail) $ in Millions | 6 Months Ended
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Jun. 30, 2023 USD ($)
Unrecognized tax benefits: |
Deferred income tax expense benefit non cash | $ 1.0

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of deferred income tax expense (benefit) pertaining to income (loss) from expiration of certain statutes of limitations. + References No definition available. + Details
Name: | vhi_DeferredIncomeTaxExpenseBenefitNonCash
Namespace Prefix: | vhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration