v3.26.1
Inventories - Inventories (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Inventory [Line Items]    
Inventory, Finished Goods, Net of Reserves $ 117.1 $ 128.6
Inventory, Supplies, Net of Reserves 115.5 114.2
Inventories 269.7 281.7
Inventories    
Inventory [Line Items]    
Inventory, Raw Materials, Net of Reserves 26.8 28.8
Inventory Pulp    
Inventory [Line Items]    
Inventory, Raw Materials, Net of Reserves $ 10.3 $ 10.1