Financial Instruments (Fair Value of Derivative Instruments) (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Other Current Assets [Member]
Forward exchange contracts and options designated as hedging instruments, assets	$ 4.8	$ 1.2
Other Non-Current Assets [Member]
Forward exchange contracts and options designated as hedging instruments, assets	7.9	0.8
Other Current Liabilities [Member]
Forward exchange contracts and options designated as hedging instruments, liabilities	14.0	29.7
Other Long-Term Liabilities [Member]
Forward exchange contracts and options designated as hedging instruments, liabilities	$ 5.3	$ 14.7