Restructuring, Impairment and Transaction-Related Charges (Schedule of Other Restructuring (Income) Charges (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Restructuring Cost and Reserve [Line Items]
Equipment and infrastructure removal costs	$ 0.1
Gains on the sale of facilities	(3.5)	$ (2.2)
Other restructuring (income) charges	(0.7)	5.6
Facilities Idled
Restructuring Cost and Reserve [Line Items]
Vacant facility carrying costs and lease exit charges	1.3	6.6
Equipment and Infrastructure Removal Charges
Restructuring Cost and Reserve [Line Items]
Equipment and infrastructure removal costs		0.8
Other restructuring charges
Restructuring Cost and Reserve [Line Items]
Other restructuring activities	$ 1.4
Non-Cash Pension Settlement
Restructuring Cost and Reserve [Line Items]
Other restructuring activities		$ 0.4