Acquisitions Acquisitions Textuals (Details) € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($) Employees	Dec. 31, 2019 EUR (€)	Dec. 31, 2018 USD ($) Employees	Dec. 31, 2018 EUR (€)
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 4.7	$ 113.1		$ 0.0
Goodwill	$ 944.8	$ 927.2		$ 875.9
Rheinhutte Pumpen Group [Member]
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition		Apr. 30, 2019	Apr. 30, 2019
Payments to Acquire Businesses, Net of Cash Acquired | €			€ 82.5
Business Acquisition, Name of Acquired Entity	Rheinhütte Pumpen Group
Business Acquisition, Revenue Reported by Acquired Entity for Last Annual Period | €					€ 61.5
Number of Employees at Entity to be Acquired | Employees				430
Goodwill	$ 37.6
Matrix Composites [Member]
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition		Jul. 03, 2019	Jul. 03, 2019
Payments to Acquire Businesses, Net of Cash Acquired		$ 25.8
Business Acquisition, Name of Acquired Entity	Matrix Composites, Inc.
Business Acquisition, Revenue Reported by Acquired Entity for Last Annual Period				$ 12.0
Number of Employees at Entity to be Acquired | Employees		115
Goodwill	$ 14.3