Restructuring and Asset Impairments - Restructuring reserves (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	$ 7.7	$ 13.1
Restructuring charges	10.2	7.2
Cash payments	(7.3)	(9.1)
Other, non-cash adjustments and foreign currency effect	(1.3)	(2.9)
Balance at the end of the period	9.3	8.3
Severance
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	4.6	9.6
Restructuring charges	8.2	3.0
Cash payments	(4.0)	(7.2)
Other, non-cash adjustments and foreign currency effect	0.2	(0.1)
Balance at the end of the period	9.0	5.3
Exit Costs
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	2.6	2.9
Restructuring charges	1.0	1.4
Cash payments	(3.3)	(1.9)
Other, non-cash adjustments and foreign currency effect	0.0	0.0
Balance at the end of the period	0.3	2.4
Provisions for Excess Inventory
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	0.5	0.6
Restructuring charges	1.0	2.8
Cash payments	0.0	0.0
Other, non-cash adjustments and foreign currency effect	(1.5)	(2.8)
Balance at the end of the period	$ 0.0	$ 0.6