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PROPERTY, PLANT AND EQUIPMENT PROPERTY, PLANT AND EQUIPMENT (Book Value of Land and Mineral Rights Disclosure) (Details) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2014
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Dec. 31, 2013
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| Property, Plant and Equipment [Abstract] | ||
| Land Rights | $ 31.9us-gaap_Land | $ 46.3us-gaap_Land |
| Mineral Rights [Abstract] | ||
| Mineral Properties, Gross | 558.3us-gaap_MineralPropertiesGross | 7,773.3us-gaap_MineralPropertiesGross |
| Mineral Properties, Accumulated Depletion | (101.3)us-gaap_MineralPropertiesAccumulatedDepletion | (942.6)us-gaap_MineralPropertiesAccumulatedDepletion |
| Mineral Properties, Net | $ 457.0us-gaap_MineralPropertiesNet | $ 6,830.7us-gaap_MineralPropertiesNet |
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- Definition
Amount before accumulated depletion of real estate held for productive use, excluding land held for sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The accumulated decrease in the carrying value of the mineral properties as a result of mine or mineral production. No definition available.
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- Definition
Carrying amount at the balance sheet date of mineral properties, gross of adjustments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Mineral properties, net of adjustments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Details
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