Other Charges, Net - Restructuring Reserves (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Changes in the restructuring reserves
Balance at the beginning of the period			$ 9.8
Restructuring charges	$ 1.6	$ 1.9	5.1	$ 5.7
Cash payments			(9.7)
Other, non-cash adjustments and foreign currency effect			(0.8)
Balance at the end of the period	4.4		4.4
Severance
Changes in the restructuring reserves
Balance at the beginning of the period			7.6
Restructuring charges			4.1
Cash payments			(9.0)
Balance at the end of the period	2.7		2.7
Exit Costs
Changes in the restructuring reserves
Balance at the beginning of the period			0.8
Restructuring charges			1.0
Cash payments			(0.7)
Other, non-cash adjustments and foreign currency effect			(0.7)
Balance at the end of the period	0.4		0.4
Provisions for Excess Inventory
Changes in the restructuring reserves
Balance at the beginning of the period			1.4
Other, non-cash adjustments and foreign currency effect			(0.1)
Balance at the end of the period	$ 1.3		$ 1.3