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Accounts payable and accrued liabilities - Schedule of Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Accounts payable: |  |
Accounts payable | $ 139.2 | $ 228.5
Current accrued liabilities: |  |
Deferred income | 50.4 | 88.8
Employee benefits | 34.5 | 36.2
Accrued development costs | 17.2 | 15.1
Accrued litigation settlement | 11.9 | 11.8
Accrued sales discounts and rebates | 18.1 | 22.5
Interest | 11.9 | 5.1
Operating lease liabilities | $ 3.7 | $ 3.9
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Total | Total
Environmental remediation and related costs | $ 3.9 | $ 3.7
Other | 43.7 | 45.0
Total | 367.7 | 490.7
Kronos Worldwide, Inc. |  |
Accounts payable: |  |
Accounts payable | 129.9 | 218.7
CompX |  |
Accounts payable: |  |
Accounts payable | 3.8 | 3.1
BMI/LandWell |  |
Accounts payable: |  |
Accounts payable | 5.5 | 6.7
Contran | Income Taxes Payable |  |
Current accrued liabilities: |  |
Other | 14.8 | 10.2
Louisiana Pigment Company |  |
Current accrued liabilities: |  |
Other | $ 18.4 | $ 19.9

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