Acquisition - Intangible Assets Acquired (Details) - Grakon $ in Millions	Sep. 12, 2018 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 221.9
Customer Relationships and Agreements - Significant Customer
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 57.0
Amortization period	19 years 6 months
Customer Relationships and Agreements - All Other Customers
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 125.0
Amortization period	19 years 6 months
Technology Licenses
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 17.7
Amortization period	11 years 8 months 12 days
Trade Names
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 22.2
Amortization period	8 years 6 months