Derivative Financial Instruments (Notional and Fair Values of Non-Designated Risk Management Derivative Instruments) (Details) - Nondesignated - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Notional Value	$ 475.1	$ 397.4
Fair Value Asset	3.8	0.2
Fair Value Liability	10.8	14.6
Foreign Exchange Contracts
Derivative [Line Items]
Notional Value	274.8	244.6
Fair Value Asset	3.8	0.2
Fair Value Liability	0.4	3.7
Other Financial Derivatives
Derivative [Line Items]
Notional Value	200.3	152.8
Fair Value Asset	0.0	0.0
Fair Value Liability	$ 10.4	$ 10.9