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v3.25.3

Acquisition of Remaining Joint Venture Interest in LPC - Assets acquired and liabilities assumed (Details) - USD ($) $ in Millions | Jul. 16, 2024 | Sep. 30, 2025 | Dec. 31, 2024
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Allocation of purchase price to identifiable assets acquired and liabilities assumed: |  |  |
Goodwill |  | $ 382.3 | $ 382.3
Louisiana Pigment Company, L.P. (LPC) | Kronos |  |  |
Consideration: |  |  |
Cash consideration | $ 185.0 |  |
Working capital adjustment | (11.0) |  |
Earn-out liability | 4.2 |  |
Total fair value of consideration | 178.2 |  |
Fair value of investment in TiO2 manufacturing joint venture | 178.2 |  |
Total | 356.4 |  |
Allocation of purchase price to identifiable assets acquired and liabilities assumed: |  |  |
Cash and cash equivalents | 21.3 |  |
Restricted cash | 1.3 |  |
Accounts and other receivables, net | 0.2 |  |
Inventories, net | 82.0 |  |
Prepaid expenses and other | 0.6 |  |
Other assets | 10.7 |  |
Property and equipment | 268.5 |  |
Accounts payable and accrued liabilities | (21.7) |  |
Other noncurrent liabilities | (6.4) |  |
Deferred tax liability | (2.7) |  |
Total net identifiable assets acquired | 353.8 |  |
Goodwill | 2.6 |  |
Total | 356.4 |  |
Goodwill expected to be deductible for tax purposes | $ 0.1 |  |
Louisiana Pigment Company, L.P. (LPC) | Kronos | Minimum |  |  |
Allocation of purchase price to identifiable assets acquired and liabilities assumed: |  |  |
Property and equipment useful life | 5 years |  |
Louisiana Pigment Company, L.P. (LPC) | Kronos | Maximum |  |  |
Allocation of purchase price to identifiable assets acquired and liabilities assumed: |  |  |
Property and equipment useful life | 20 years |  |

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Name: | srt_ConsolidatedEntitiesAxis=vhi_KronosMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |