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Asset Retirement Obligation (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
ASSET RETIREMENT OBLIGATIONS [Abstract]    
Beginning balance $ 8.6 $ 8.3
Accretion Expense 0.7 0.6
Accrued to expense during the year 0.0 0.3
Asset Retirement Obligation, Revision of Estimate 1.4 0.0
Payments made (0.3) (0.5)
Ending balance 10.0 8.6
Asset Retirement Obligation, Foreign Currency Translation $ (0.4) $ (0.1)