Quarterly report pursuant to Section 13 or 15(d)

SEGMENT REPORTING (Narrative) (Details)

v2.4.0.8
SEGMENT REPORTING (Narrative) (Details)
6 Months Ended
Jun. 30, 2013
Facility
U.S. Iron Ore [Member]
 
Segment Reporting Information [Line Items]  
Number of mines (in number of facilities) 5
Eastern Canadian Iron Ore [Member]
 
Segment Reporting Information [Line Items]  
Number of mines (in number of facilities) 2
Asia Pacific Iron Ore [Member]
 
Segment Reporting Information [Line Items]  
Number of mines (in number of facilities) 1
North American Coal [Member] | Metallurgical Coal Mines [Member]
 
Segment Reporting Information [Line Items]  
Number of mines (in number of facilities) 5
North American Coal [Member] | Thermal Coal Mines [Member]
 
Segment Reporting Information [Line Items]  
Number of mines (in number of facilities) 1
Latin American Iron Ore [Member] | Amapa [Member]
 
Segment Reporting Information [Line Items]  
Interest Percentage 30.00%