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Quarterly report pursuant to Section 13 or 15(d)

INVENTORIES (Schedule Of Inventories) (Details)

v3.7.0.1
INVENTORIES (Schedule Of Inventories) (Details) - USD ($)
$ in Millions
Jun. 30, 2017
Dec. 31, 2016
Inventory, Net [Abstract] Ìý Ìý
Finished Goods $ 261.0 $ 148.0
Work-in Process 26.6 30.4
Total Inventory 287.6 178.4
U.S. Iron Ore [Member] Ìý Ìý
Inventory, Net [Abstract] Ìý Ìý
Finished Goods 238.3 124.4
Work-in Process 14.3 12.6
Total Inventory 252.6 137.0
Asia Pacific Iron Ore [Member] Ìý Ìý
Inventory, Net [Abstract] Ìý Ìý
Finished Goods 22.7 23.6
Work-in Process 12.3 17.8
Total Inventory $ 35.0 $ 41.4