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SEGMENT REPORTING (Narrative) (Details)
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3 Months Ended |
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Mar. 31, 2014
Facility
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U.S. Iron Ore [Member]
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Ìý |
| Segment Reporting Information [Line Items] | Ìý |
| Number of mines (in number of facilities) | 5 |
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Eastern Canadian Iron Ore [Member]
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Ìý |
| Segment Reporting Information [Line Items] | Ìý |
| Number of mines (in number of facilities) | 2 |
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Asia Pacific Iron Ore [Member]
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Ìý |
| Segment Reporting Information [Line Items] | Ìý |
| Number of mines (in number of facilities) | 1 |
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North American Coal [Member] | Metallurgical Coal Mines [Member]
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Ìý |
| Segment Reporting Information [Line Items] | Ìý |
| Number of mines (in number of facilities) | 4 |
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North American Coal [Member] | Thermal Coal Mines [Member]
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Ìý |
| Segment Reporting Information [Line Items] | Ìý |
| Number of mines (in number of facilities) | 1 |
| X | ||||||||||
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- Definition
Number of mines No definition available.
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| X | ||||||||||
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- Details
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