Employee Benefit Plans - Components of Net Period Benefit Expense (Details) - Jun. 30, 2015 - German Defined Benefit Pension Plan - USD ($) $ in Millions	Total	Total
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0.3	$ 0.4
Interest cost	0.2	0.3
Net periodic benefit expense	$ 0.5	$ 0.7