Annual report pursuant to Section 13 and 15(d)

Derivative Financial Instruments - Summary of Derivative Assets and Liabilities (Details)

v3.8.0.1
Derivative Financial Instruments - Summary of Derivative Assets and Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Derivatives, Fair Value [Line Items]    
Derivative asset $ 0.0 $ 1.6
Derivative liability 1.5 0.0
Foreign exchange contracts | Not Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Derivative asset 0.0 0.8
Derivative liability 0.3 0.0
Cash flow hedging | Foreign exchange contracts | Designated as hedging instruments    
Derivatives, Fair Value [Line Items]    
Derivative asset 0.0 0.8
Derivative liability $ 1.2 $ 0.0