Other Charges, Net - Restructuring Reserves (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Changes in the restructuring reserves
Balance at the beginning of the period	$ 4.6
Restructuring charges	2.3	$ 4.0
Cash payments	(1.7)
Non-cash adjustments	(1.0)
Balance at the end of the period	4.2
Severance
Changes in the restructuring reserves
Balance at the beginning of the period	2.2
Restructuring charges	1.5
Cash payments	(0.8)
Balance at the end of the period	2.9
Exit Costs
Changes in the restructuring reserves
Balance at the beginning of the period	0.1
Restructuring charges	0.8
Cash payments	(0.9)
Provisions for Excess Inventory
Changes in the restructuring reserves
Balance at the beginning of the period	2.3
Non-cash adjustments	(1.0)
Balance at the end of the period	$ 1.3