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Derivatives Derivatives (Details) (Cost of Sales [Member], Cash Flow Hedging [Member], USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Cost of Sales [Member] | Cash Flow Hedging [Member]
     
Derivative Instruments, Gain (Loss) [Line Items]      
Location of Gain (Loss) Reclassified into Net Income   Cost of Goods Sold  
Derivative instruments, gain (loss) reclassified from accumulated OCI into income, effective portion, net   $ 2.8 $ (1.8)
Gain Expected to be Reclassified During the Next 12 Months $ 0.3