Restructuring and Other Costs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
restructuring and other costs [Line Items]
Restructuring Costs	$ 11.1	$ 4.4	$ 38.2	$ 17.6
Other Restructuring Costs	1.0	0.0	1.0	0.0
Other Costs	0.8	0.0	1.9	7.2
Restructuring and other costs	$ 12.9	$ 4.4	$ 41.1	$ 24.8