Derivative Financial Instruments and Risk Management - Fair Value of Foreign Currency Derivatives in Balance Sheet (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative asset, current	$ 6.6	$ 5.8
Derivative liability, current	2.8	1.3
Derivative asset, noncurrent	1.1	1.2
Derivative liability, noncurrent	0.2	0.1
Total derivative asset	7.7	7.0
Total derivative liability	$ 3.0	$ 1.4