Other Operating Credits and Charges, Net (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Reorganization charges	$ (0.9)	$ 3.8	$ 0.0	$ (4.7)	$ 0.0
Adjustment related to product-related warranty reserves	(7.7)		0.0	(7.7)	5.4
Refund of environmental costs	0.0		0.0	8.3	0.0
Refund of sales and use taxes			0.9		0.9
Expenses related to hurricane	(0.5)		0.0	(0.5)	0.0
Other	0.0		0.0	0.4	0.0
Other Operating Charges And Credits, Net	$ 6.3		$ 0.9	$ 11.2	$ (4.5)