Quarterly report pursuant to Section 13 or 15(d)

INVENTORIES (Narrative) (Details)

v2.4.0.8
INVENTORIES (Narrative) (Details) (Cost of Sales [Member], USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
North American Coal [Member]
       
Inventory [Line Items]        
Inventory Write-down $ 2.6 $ 8.0 $ 5.3 $ 17.9
Pellets [Member] | Wabush [Member]
       
Inventory [Line Items]        
Inventory Write-down     11.1  
Unsaleable Inventory Impairment Charge     10.6  
Concentrate [Member] | Eastern Canadian Iron Ore [Member]
       
Inventory [Line Items]        
Inventory Write-down $ 5.9   $ 10.6