|
Segment Reporting (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
6 Months Ended |
|---|---|
|
Jun. 30, 2011
|
|
| Segment Reporting Information, Intersegment Revenue | $ 0 |
|
Amapa [Member] | Latin American Iron Ore [Member]
|
Ìý |
| Percent ownership interest | 30.00% |
|
Sonoma [Member] | Asia Pacific Coal [Member]
|
Ìý |
| Percent ownership interest | 45.00% |
|
renewaFUEL [Member] | Alternative Energies [Member]
|
Ìý |
| Percent ownership interest | 95.00% |
|
U.S. Iron Ore [Member]
|
Ìý |
| Number of Mines in Operation | 5 |
|
Eastern Canadian Iron Ore [Member]
|
Ìý |
| Number of Mines in Operation | 2 |
|
Asia Pacific Iron Ore [Member]
|
Ìý |
| Number of Mines in Operation | 2 |
|
North American Coal [Member]
|
Ìý |
| Number of Mines in Operation | 5 |
|
Thermal Coal [Member]
|
Ìý |
| Number of Mines in Operation | 1 |
| X | ||||||||||
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- Definition
Number of Mines in Operation
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| X | ||||||||||
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- Definition
The percentage of ownership of common stock or equity participation in the investee.
|
| X | ||||||||||
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- Definition
Amount of revenue from transactions with other operating segments of the same entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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