Acquisitions - Intangible Assets Acquired (Details) - USD ($) $ in Millions	Sep. 12, 2018	Oct. 03, 2017	Jul. 27, 2017
Grakon
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 221.9
Grakon | Customer Relationships and Agreements - Significant Customer
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 57.0
Amortization period	19 years 6 months
Grakon | 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
Grakon | Technology Licenses
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 17.7
Amortization period	11 years 8 months 12 days
Grakon | Trade Names
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 22.2
Amortization period	8 years 6 months
Procoplast
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired			$ 19.2
Amortization period			14 years 4 months 24 days
Pacific Insight
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired		$ 40.1
Amortization period		10 years 8 months 12 days