Restructuring Expenses and Repositioning Expenses Repositioning Expenses - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Manufacturing Plants Closed	2
Repositioning expenses	$ 11.1	$ 32.4	$ 15.2
Severance and stock compensation costs related to employee separations [Member]
Restructuring Cost and Reserve [Line Items]
Repositioning expenses	11.7
Write-Off of previously capitalized plant engineering costs [Member]
Restructuring Cost and Reserve [Line Items]
Repositioning expenses	$ 8.5