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Financial Instruments Schedule of the Fair Values of Derivative Instruments (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Cash Flow Hedging [Member]
   
Derivatives, Fair Value [Line Items]    
Derivatives designated as hedges, asset at fair value $ 0.1 $ 0.1
Derivatives designated as hedges, liability at fair value 2.0 3.4
Nondesignated [Member]
   
Derivatives, Fair Value [Line Items]    
Derivatives not designated as hedges, asset at fair value 0.8 3.1
Derivatives not designated as hedges, liability at fair value 9.0 13.6
Significant Other Observable Inputs (Level 2) [Member] | Recurring fair value measurements [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative asset fair value 0.9  
Derivative liability fair value $ 11.0