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Derivative Instruments (Details 2) - USD ($)
$ in Millions
Jun. 30, 2015
Dec. 31, 2014
Derivative Instruments, Gain (Loss) [Line Items]    
Total derivative contracts $ 0.7 $ (0.1)
Prepaid Expenses and Other Current Assets [Member] | Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Foreign exchange contracts 0.7 0.0
Accued Expenses And Other Current Liabilities [Member] | Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Foreign exchange contracts $ 0.0 $ 0.1