Commitments and Contingencies Marshalltown Tornado and Recovery (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Site clean-up and remediation	$ 6.2		$ 23.3
Insurance recoveries received	52.0		128.0	$ 0.0
Factory inefficiencies	4.5		8.0
Other	9.4		18.4
Total expense	20.1		49.7
Net Loss(gain) from natural disaster, net of Insurance recoveries	31.9		78.3
Loss (gain) from natural disaster, net of Insurance recoveries	5.9	$ 0.0	12.8	0.0
Insurance proceeds for lost profits	$ (26.0)	$ 0.0	$ (65.5)	$ 0.0