Restructuring Costs - Summary of Changes in Restructuring Reserve (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 69.3	$ 22.2	$ 25.8
Paid/Utilized	(36.7)	(26.8)	(24.3)
Restructuring costs	1.4	73.9	20.7
Restructuring reserve, ending balance	34.0	69.3	22.2
Severance and benefits
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	68.9	21.6	24.6
Paid/Utilized	(31.8)	(23.2)	(21.6)
Restructuring costs	(3.3)	70.5	18.6
Restructuring reserve, ending balance	33.8	68.9	21.6
Plant closing and other
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0.4	0.6	1.2
Paid/Utilized	(4.9)	(3.6)	(2.7)
Restructuring costs	4.7	3.4	2.1
Restructuring reserve, ending balance	$ 0.2	$ 0.4	$ 0.6