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GOODWILL AND OTHER INTANGIBLE ASSETS AND LIABILITIES (Schedule Of Finite-Lived Intangible Assets By Major Class) (Details) - USD ($) $ in Millions | Jun. 30, 2015 | Dec. 31, 2014
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Finite-Lived Intangible Assets [Line Items] |  |
Definite lived intangible assets - Gross Carrying Amount | $ 78.8 | $ 79.2
Definite lived intangible assets - Accumulated Amortization | (18.5) | (16.5)
Definite lived intangible assets - Net Carrying Amount | 60.3 | 62.7
Permits [Member] | Other Assets [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Definite lived intangible assets - Gross Carrying Amount | 78.8 | 79.2
Definite lived intangible assets - Accumulated Amortization | (18.5) | (16.5)
Definite lived intangible assets - Net Carrying Amount | 60.3 | 62.7
Below Market Sales Contracts [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Definite lived intangible assets - Gross Carrying Amount | (228.9) | (228.9)
Definite lived intangible assets - Accumulated Amortization | 190.5 | 182.8
Definite lived intangible assets - Net Carrying Amount | (38.4) | (46.1)
Below Market Sales Contracts [Member] | Other Current Liabilities [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Definite lived intangible assets - Gross Carrying Amount | $ (23.0) | (23.0)
Definite lived intangible assets - Accumulated Amortization |  |
Definite lived intangible assets - Net Carrying Amount | $ (23.0) | (23.0)
Below Market Sales Contracts [Member] | Other Liabilities [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Definite lived intangible assets - Gross Carrying Amount | (205.9) | (205.9)
Definite lived intangible assets - Accumulated Amortization | 190.5 | 182.8
Definite lived intangible assets - Net Carrying Amount | $ (15.4) | $ (23.1)

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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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