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Commitments and Contingencies - Other Litigation - Additional Information (Detail) (Product Liability And Occupational Exposure Litigation Claims, NL)
 3 Months Ended
Mar. 31, 2015
Plaintiff
Loss Contingencies [Line Items]  
Cases pending 166us-gaap_LossContingencyPendingClaimsNumber
Pending Claims  
Loss Contingencies [Line Items]  
Number of plaintiffs involved 712us-gaap_LossContingencyNumberOfPlaintiffs
/ dei_LegalEntityAxis
= vhi_NlIndustriesIncMember
/ us-gaap_LitigationCaseAxis
= vhi_ProductLiabilityAndOccupationalExposureLitigationClaimsMember
/ us-gaap_LitigationStatusAxis
= vhi_PendingClaimsMember
Administratively Dismissed Claims  
Loss Contingencies [Line Items]  
Number of plaintiffs involved 8,692us-gaap_LossContingencyNumberOfPlaintiffs
/ dei_LegalEntityAxis
= vhi_NlIndustriesIncMember
/ us-gaap_LitigationCaseAxis
= vhi_ProductLiabilityAndOccupationalExposureLitigationClaimsMember
/ us-gaap_LitigationStatusAxis
= vhi_AdministrativelyDismissedClaimsMember