Derivative Financial Instruments (Narrative) (Details) - Foreign exchange contracts - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Derivatives not designated as hedging instruments
Derivative [Line Items]
Notional Amount of Foreign Currency Cash Flow Hedge Derivatives	$ 33.3	$ 55.8
Cash Flow Hedging | Derivatives designated as hedging instruments
Derivative [Line Items]
Notional Amount of Foreign Currency Cash Flow Hedge Derivatives	$ 68.2	$ 68.4