Quarterly report pursuant to Section 13 or 15(d)

PROPERTY, PLANT AND EQUIPMENT (Narrative) (Details)

v2.4.0.8
PROPERTY, PLANT AND EQUIPMENT (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Construction in Progress [Member]
Dec. 31, 2013
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]        
Depreciation And Depletion $ 138.4 $ 135.9    
Accumulated amount of capitalized interest included within construction in progress     30.8 31.4
Interest costs capitalized during the period     $ 0.6 $ 17.4