v3.26.1
Accounts payable and accrued liabilities - Components of Accounts Payable and Accrued Liabilities (Detail) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Accounts payable and accrued liabilities    
Accounts payable $ 201.3 $ 224.0
Accrued sales discounts and rebates 8.4 25.1
Employee benefits 21.9 26.0
Accrued severance costs 7.1 8.8
Operating lease liabilities $ 3.9 $ 4.2
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Total Total
Other $ 52.9 $ 65.0
Total 296.8 354.4
Related party | Contran    
Accounts payable and accrued liabilities    
Payables to affiliates $ 1.3 $ 1.3