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v3.25.2

Long-term debt - Valhi Contran Credit Facility - Additional Information (Details) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2025 USD ($)
Debt Instrument [Line Items] |
Repayments of credit facility | $ 280.9
VALHI, INC. | Contran Credit Facility |
Debt Instrument [Line Items] |
Borrowings | 0.0
Repayments of credit facility | $ 11.5
Debt instrument, interest rate during period | 8.50%
Debt instrument, Interest rate at period end | 8.50%
Amount available for borrowing | $ 116.9

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