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v3.25.0.1

Summary of significant accounting policies - Additional Information (Details) $ / shares in Units, $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2024 USD ($) a $ / shares | Dec. 31, 2023 USD ($) $ / shares | Dec. 31, 2022 USD ($) $ / shares | Jul. 16, 2024 | Jul. 15, 2024 | Dec. 31, 2021 USD ($)
Summary of significant accounting policies |  |  |  |  |  |
Deferred income tax liabilities | $ 57.7 | $ 17.1 |  |  |  |
Retained earnings | 574.7 | 475.8 |  |  |  |
Income tax expense (benefit) | $ 82.9 | $ (24.6) | $ 36.8 |  |  |
Basic net loss per share | $ / shares | $ 3.79 | $ (0.35) | $ 3.06 |  |  |
Diluted net loss per share | $ / shares | $ 3.79 | $ (0.35) | $ 3.06 |  |  |
Net cash used in operating activities | $ 44.0 | $ 3.9 | $ 34.9 |  |  |
Net cash used in investing activities | (125.0) | (29.0) | (146.7) |  |  |
Net cash used in financing activities | (2.3) | (75.9) | (114.0) |  |  |
Capitalized interest costs on property and equipment | $ 1.0 | 1.9 | 1.7 |  |  |
Percentage of likelihood for recognition of uncertain tax positions | 50.00% |  |  |  |  |
Standard payment terms | less than one year |  |  |  |  |
Shipping and handling costs | $ 1,680.3 | 1,676.5 | 1,732.1 |  |  |
Advertising costs | 2.0 | 2.0 | 2.0 |  |  |
Research, development and certain sales technical support costs | 14.0 | 18.0 | 16.0 |  |  |
Louisiana Pigment Company, L.P. (LPC) |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
Percentage owned manufacturing joint venture under equity method investment |  |  |  |  | 50.00% |
Revision of prior period, reclassification, adjustment |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
Deferred income tax liabilities |  | 14.7 | 12.5 |  |  |
Restatement adjustment |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
Retained earnings |  |  |  |  |  | $ 15.5
Income tax expense (benefit) |  | $ 2.2 | $ 3.0 |  |  |
Basic net loss per share | $ / shares |  | $ (0.07) | $ (0.10) |  |  |
Diluted net loss per share | $ / shares |  | $ (0.07) | $ (0.10) |  |  |
Net cash used in investing activities |  | $ 0.0 | $ 0.0 |  |  |
Net cash used in financing activities |  | 0.0 | 0.0 |  |  |
Chemicals |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
Shipping and handling costs | 1,530.1 | 1,502.7 | 1,540.2 |  |  |
Shipping and Handling | Chemicals |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
Shipping and handling costs | $ 115.0 | 101.0 | 122.0 |  |  |
Residential or planned community |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
Area of real estate property | a | 2,100 |  |  |  |  |
Residential Housing Unit | Minimum |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
Percentage of sales price | 2.50% |  |  |  |  |
Residential Housing Unit | Maximum |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
Percentage of sales price | 3.50% |  |  |  |  |
Kronos | Louisiana Pigment Company, L.P. (LPC) |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
Percentage held through wholly-owned subsidiary |  |  |  | 50.00% | 50.00% |
Contran |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
Net cash payments received from/paid to tax group parent | $ 19.1 | $ 14.2 | $ 17.5 |  |  |
Contran | Valhi Incorporation |  |  |  |  |  |
Summary of significant accounting policies |  |  |  |  |  |
Parent company ownership interest | 91.00% |  |  |  |  |

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