Restructuring Expenses (Details) $ in Millions	3 Months Ended		36 Months Ended
	Mar. 31, 2017 USD ($) employees	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($) employees
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, headcount reduction | employees	200		2,750
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning of period	$ 15.3
Restructuring expenses	5.1	$ 1.9
Restructuring Reserve, Settled without Cash	(0.2)
Restructuring Costs	4.9
Restructuring cash activity	(5.8)
Foreign currency translation	0.2
Restructuring reserve, end of period	14.6		$ 15.3
Write-down Of Property, Plant And Equipment [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning of period	0.0
Restructuring expenses	0.2
Restructuring Reserve, Settled without Cash	(0.2)
Restructuring Costs	0.0
Restructuring cash activity	0.0
Foreign currency translation	0.0
Restructuring reserve, end of period	0.0		0.0
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning of period	14.5
Restructuring expenses	4.9
Restructuring Reserve, Settled without Cash	0.0
Restructuring Costs	4.9
Restructuring cash activity	(5.0)
Foreign currency translation	0.2
Restructuring reserve, end of period	14.6		14.5
Facility Closing Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning of period	0.8
Restructuring expenses	0.0
Restructuring Reserve, Settled without Cash	0.0
Restructuring Costs	0.0
Restructuring cash activity	(0.8)
Foreign currency translation	0.0
Restructuring reserve, end of period	$ 0.0		$ 0.8