v3.26.1
Inventories, net (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Inventories, net    
Raw materials $ 150.4 $ 185.3
Work in process 69.3 67.2
Finished products 182.3 273.6
Supplies (chemicals) 128.9 133.7
Total 530.9 659.8
Chemicals    
Inventories, net    
Raw materials 144.5 179.7
Work in process 48.1 47.3
Finished products 177.6 268.7
Component products    
Inventories, net    
Raw materials 5.9 5.6
Work in process 21.2 19.9
Finished products $ 4.7 $ 4.9