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Asset Retirement Obligation (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
ASSET RETIREMENT OBLIGATIONS [Abstract]    
Beginning balance $ 8.3us-gaap_AssetRetirementObligation $ 8.3us-gaap_AssetRetirementObligation
Accretion Expense 0.6us-gaap_AssetRetirementObligationAccretionExpense 0.7us-gaap_AssetRetirementObligationAccretionExpense
Accrued to expense during the year 0.3us-gaap_AssetRetirementObligationPeriodIncreaseDecrease 0us-gaap_AssetRetirementObligationPeriodIncreaseDecrease
Payments made (0.5)us-gaap_AssetRetirementObligationLiabilitiesSettled (0.5)us-gaap_AssetRetirementObligationLiabilitiesSettled
Ending balance 8.6us-gaap_AssetRetirementObligation 8.3us-gaap_AssetRetirementObligation
Asset Retirement Obligation, Foreign Currency Translation $ (0.1)us-gaap_AssetRetirementObligationForeignCurrencyTranslation $ (0.2)us-gaap_AssetRetirementObligationForeignCurrencyTranslation