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PROPERTY, PLANT AND EQUIPMENT (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
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Mar. 31, 2015
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Mar. 31, 2014
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| Property, Plant and Equipment [Line Items] | Ìý | Ìý |
| Depreciation And Depletion | $ 28.7clf_DepreciationAndDepletionExpense | $ 67.7clf_DepreciationAndDepletionExpense |
| X | ||||||||||
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- Definition
The aggregate expense recognized in the current period that allocates the cost of tangible assets or depleting assets to periods that benefit from use of the assets. No definition available.
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| X | ||||||||||
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- Details
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