Restructuring and Other Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	$ 47.4	$ 22.5	$ 7.8
Other Restructuring Costs	10.3	0.0	0.0
Settlement loss (gain)	10.6	6.1	0.1
Other Costs	2.7	6.1	4.3
Restructuring and other costs	70.5	28.6	12.1
Pension Plans, Defined Benefit [Member]
Restructuring Cost and Reserve [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement, Net of Taxes	6.8
Settlement loss (gain)	$ 10.1	$ 0.0	$ 0.0