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Business Segment Information - Additional Information (Detail) | Mar. 31, 2015
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Kronos Worldwide, Inc. |
Segment Reporting Information [Line Items] |
Direct controlling interest in subsidiary | 50.00%vhi_DirectControllingInterestInSubsidiary / dei_LegalEntityAxis = vhi_KronosMember
Indirect controlling interest in subsidiary | 30.00%vhi_IndirectControllingInterestInSubsidiary / dei_LegalEntityAxis = vhi_KronosMember
NL |
Segment Reporting Information [Line Items] |
Total controlling interest | 83.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = vhi_NlIndustriesIncMember
LandWell |
Segment Reporting Information [Line Items] |
Direct controlling interest in subsidiary | 27.00%vhi_DirectControllingInterestInSubsidiary / dei_LegalEntityAxis = vhi_LandwellMember
Indirect controlling interest in subsidiary | 50.00%vhi_IndirectControllingInterestInSubsidiary / dei_LegalEntityAxis = vhi_LandwellMember
BMI |
Segment Reporting Information [Line Items] |
Total controlling interest | 63.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = vhi_BasicManagementMember

X
- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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

X
- Definition Controlling interest in subsidiary held directly by parent. + References No definition available. + Details
Name: | vhi_DirectControllingInterestInSubsidiary
Namespace Prefix: | vhi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Controlling interest in subsidiary held indirectly through controlled subsidiary of parent. + References No definition available. + Details
Name: | vhi_IndirectControllingInterestInSubsidiary
Namespace Prefix: | vhi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=vhi_BasicManagementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=vhi_KronosMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=vhi_LandwellMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=vhi_NlIndustriesIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |