Long-term debt - Valhi Contran Credit Facility - Additional Information (Details) - USD ($) $ in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Long-term debt | ||
| Repayments of credit facility | $ 255.3 | $ 280.9 |
| VALHI, INC. | Contran Credit Facility | ||
| Long-term debt | ||
| Borrowings | 0.0 | |
| Repayments of credit facility | $ 16.0 | |
| Debt instrument, interest rate during period | 7.75% | |
| Debt instrument, Interest rate at period end | 7.75% | |
| Amount available for borrowing | $ 117.4 | |
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- Definition The average effective interest rate during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The effective interest rate at the end of the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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