Restructuring Activities - Summary of Restructuring Activities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Continuing Operations:
Other related costs	$ 7.2	$ 12.8	$ 15.0	$ 50.8
Restructuring charges	1.0	6.9	11.7	43.6
Total charges	8.2	19.7	26.7	94.4
Capital expenditures	0.2	0.2	0.4	2.5
Continuing Operations
Continuing Operations:
Other related costs	7.2	12.8	15.0	50.8
Restructuring charges	$ 1.0	$ 6.9	$ 11.7	$ 43.6