Annual report pursuant to Section 13 and 15(d)

INVENTORIES (Schedule Of Inventories) (Details)

v3.10.0.1
INVENTORIES (Schedule Of Inventories) (Details) - USD ($)
$ in Millions
Dec. 31, 2018
Jan. 01, 2018
Dec. 31, 2017
Inventory, Net [Abstract]      
Total Inventories $ 87.9 $ 87.0 $ 138.4
Mining and Pelletizing [Member]      
Inventory, Net [Abstract]      
Finished Goods 77.8   127.1
Work-in-Process $ 10.1   $ 11.3