Commitments and Contingencies Marshalltown Tornado and Recovery (Details) - USD ($) $ in Millions	3 Months Ended		17 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Site clean-up and remediation	$ 0.0	$ 17.1
Insurance recoveries received	0.0	76.0	$ 367.5
Factory inefficiencies	0.0	4.0
Other	1.6	8.5
Total expense	1.6	29.6
Loss (gain) from natural disaster, net of Insurance recoveries	(1.6)	6.9
Insurance proceeds for lost profits	$ 0.0	$ (39.5)