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Inventories (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Inventory [Line Items]    
Logs $ 44.0 $ 47.0
Other raw materials 32.0 32.0
Semi-finished inventory 20.0 26.0
Finished products 144.0 160.0
Total $ 240.0 $ 265.0