Commitments and Contingencies Marshalltown Tornado and Recovery (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		17 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Site clean-up and remediation	$ 0.0	$ 6.2	$ 0.0	$ 23.3
Insurance recoveries received	0.0	52.0	0.0	128.0	$ 367.5
Factory inefficiencies	0.0	4.5	0.0	8.0
Other	1.0	9.4	2.7	18.4
Total expense	1.0	20.1	2.7	49.7
Loss (gain) from natural disaster, net of Insurance recoveries	(1.0)	5.9	(2.7)	12.8
Insurance proceeds for lost profits	0.0	(26.0)	0.0	(65.5)
Net Loss(gain) from natural disaster	$ 1.0	$ (5.9)	$ 2.7	$ (12.8)