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Quarterly report pursuant to Section 13 or 15(d)

INVENTORIES (Schedule Of Inventories) (Details)

v2.4.0.8
INVENTORIES (Schedule Of Inventories) (Details) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Inventory, Net [Abstract] Ìý Ìý
Finished Goods $ 480.5 $ 256.5
Work-in Process 168.3 134.9
Total Inventory 648.8 391.4
U.S. Iron Ore [Member]
Ìý Ìý
Inventory, Net [Abstract] Ìý Ìý
Finished Goods 361.5 92.1
Work-in Process 24.4 13.0
Total Inventory 385.9 105.1
Eastern Canadian Iron Ore [Member]
Ìý Ìý
Inventory, Net [Abstract] Ìý Ìý
Finished Goods 34.4 65.3
Work-in Process 51.9 48.1
Total Inventory 86.3 113.4
Asia Pacific Iron Ore [Member]
Ìý Ìý
Inventory, Net [Abstract] Ìý Ìý
Finished Goods 39.6 39.7
Work-in Process 75.9 50.6
Total Inventory 115.5 90.3
North American Coal [Member]
Ìý Ìý
Inventory, Net [Abstract] Ìý Ìý
Finished Goods 45.0 59.4
Work-in Process 16.1 23.2
Total Inventory $ 61.1 $ 82.6