GOODWILL AND OTHER INTANGIBLE ASSETS AND LIABILITIES (Schedule Of Goodwill) (Details) - USD ($) $ in Millions |
9 Months Ended | 12 Months Ended |
|---|---|---|
Sep. 30, 2015 |
Dec. 31, 2014 |
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| Goodwill [Roll Forward] | ||
| Beginning Balance | $ 2.0 | $ 74.5 |
| Impairment | 0.0 | (73.5) |
| Impact of foreign currency translation | 0.0 | 1.0 |
| Ending Balance | 2.0 | 2.0 |
| Accumulated goodwill impairment loss | (73.5) | (73.5) |
| U.S. Iron Ore [Member] | ||
| Goodwill [Roll Forward] | ||
| Beginning Balance | 2.0 | 2.0 |
| Impairment | 0.0 | 0.0 |
| Impact of foreign currency translation | 0.0 | 0.0 |
| Ending Balance | 2.0 | 2.0 |
| Accumulated goodwill impairment loss | 0.0 | 0.0 |
| Asia Pacific Iron Ore [Member] | ||
| Goodwill [Roll Forward] | ||
| Beginning Balance | 0.0 | 72.5 |
| Impairment | 0.0 | (73.5) |
| Impact of foreign currency translation | 0.0 | 1.0 |
| Ending Balance | 0.0 | 0.0 |
| Accumulated goodwill impairment loss | $ (73.5) | $ (73.5) |
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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