Restructuring and Related Expenses (Schedule of Restructuring and related Costs) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 14.3	$ 0.3	$ 13.5	$ 11.9
Employee Separation Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	14.3	(2.8)	14.0	8.7
Other
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 0.0	$ 3.1	$ (0.5)	$ 3.2