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Financial Instruments Schedule of the Fair Values of Derivative Instruments (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Cash Flow Hedging [Member]
   
Derivatives, Fair Value [Line Items]    
Derivatives designated as hedges, asset at fair value $ 0.4 $ 0.1
Derivatives designated as hedges, liability at fair value 1.3 3.4
Nondesignated [Member]
   
Derivatives, Fair Value [Line Items]    
Derivatives not designated as hedges, asset at fair value 2.4 3.1
Derivatives not designated as hedges, liability at fair value 3.3 13.6
Significant Other Observable Inputs (Level 2) [Member] | Recurring fair value measurements [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative asset fair value 2.8 3.2
Derivative liability fair value $ 4.6 $ 17.0