Segment Information - Geographical Information (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Net property, plant and equipment	$ 1,035.6	$ 989.2
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net property, plant and equipment	401.8	391.7
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Net property, plant and equipment	196.4	183.4
India
Revenues from External Customers and Long-Lived Assets [Line Items]
Net property, plant and equipment	140.0	132.6
Romania
Revenues from External Customers and Long-Lived Assets [Line Items]
Net property, plant and equipment	118.0	105.3
Rest of world
Revenues from External Customers and Long-Lived Assets [Line Items]
Net property, plant and equipment	$ 179.4	$ 176.2