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Noncontrolling interest in subsidiaries (Tables) | 9 Months Ended
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Sep. 30, 2025
Noncontrolling interest in subsidiaries |
Noncontrolling Interest in Net Assets of Subsidiaries | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | September 30,
​ |  | 2024 |  | 2025
​ |  | (In millions)
Noncontrolling interest in net assets: |  | ​ |  |  | ​ |
Kronos Worldwide | ​ | $ | 210.3 | ​ | $ | 207.9
NL Industries | ​ |  | 81.5 | ​ |  | 77.9
CompX International | ​ |  | 19.0 | ​ |  | 17.9
BMI | ​ |  | 18.7 | ​ |  | 25.1
LandWell | ​ |  | 13.5 | ​ |  | 24.6
Total | ​ | $ | 343.0 | ​ | $ | 353.4
Schedule of Noncontrolling interest in net income (loss) of subsidiaries | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine months ended September 30,
​ |  | 2024 |  | 2025
​ | ​ | (In millions)
Noncontrolling interest in net income (loss) of subsidiaries: |  | ​ |  |  | ​ |
Kronos Worldwide | ​ | $ | 18.7 | ​ | $ | (5.5)
NL Industries | ​ |  | 8.6 | ​ |  | (1.2)
CompX International | ​ |  | 1.4 | ​ |  | 1.9
BMI | ​ |  | 5.8 | ​ |  | 6.4
LandWell | ​ |  | 9.2 | ​ |  | 11.2
Total | ​ | $ | 43.7 | ​ | $ | 12.8
​

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