Employee Benefit Plans - Components of Net Period Benefit Expense (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0.9
Interest cost	0.7
German Defined Benefit Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.9
Interest cost	0.7
Expected return on plan assets	(0.1)
Net periodic benefit expense	$ 1.5