Other income, net - Additional Information (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Other income, net [Line Items] | |||
| Infrastructure reimbursement | $ 34.6 | $ 31.7 | $ 25.5 |
| Insurance recoveries | 1.4 | 3.0 | |
| Kronos Worldwide | |||
| Other income, net [Line Items] | |||
| Insurance recoveries | 2.5 | ||
| LandWell | |||
| Other income, net [Line Items] | |||
| Infrastructure reimbursement | 0.4 | 1.4 | 0.3 |
| NL Industries | |||
| Other income, net [Line Items] | |||
| Insurance recoveries | $ 0.0 | $ 1.4 | $ 0.5 |