v3.26.1
Accounts and other receivables, net - Components of Accounts and Other Receivables (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Trade accounts receivable:    
VAT and other receivables $ 36.8 $ 32.7
Refundable income taxes 1.3 1.9
Allowance for doubtful accounts (3.7) (3.9)
Total 434.2 318.9
Income taxes | Contran    
Trade accounts receivable:    
Receivables from affiliates 5.0 2.4
Trade items | Contran    
Trade accounts receivable:    
Receivables from affiliates 0.1 0.1
Trade items | Other    
Trade accounts receivable:    
Receivables from affiliates 0.6 0.6
Kronos | Trade accounts receivable    
Trade accounts receivable:    
Trade Accounts receivable 373.4 270.7
CompX | Trade accounts receivable    
Trade accounts receivable:    
Trade Accounts receivable 19.6 13.8
BMI/LandWell | Trade accounts receivable    
Trade accounts receivable:    
Trade Accounts receivable $ 1.1 $ 0.6