Commitments and Contingencies Marshalltown Tornado and Recovery (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Site clean-up and remediation	$ (3.5)	$ 28.4	$ 19.8	$ 28.4
Insurance recoveries received	10.0	45.0	138.0	45.0
Increase (Decrease) in Insurance Settlements Receivable	0.0	4.1		4.1
Factory inefficiencies	0.8	4.9	9.3	4.9
Write-off of property, plant and equipment	0.0	4.2	0.0	4.2
Write-off of inventory	0.0	5.2	0.0	5.2
Other	5.6	6.7	23.5	6.7
Total expense	2.9	49.4	52.6	49.4
Loss (gain) from natural disaster, net of Insurance recoveries	7.1	(0.3)	85.4	(0.3)
Insurance proceeds for lost profits	(8.3)	0.3	(73.8)	0.3
Net Loss(gain) from natural disaster	$ 1.2	$ 0.0	$ (11.6)	$ 0.0