Restructuring Actions Restructuring Actions - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($) Employees	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve - Beginning Balance	$ 14.6	$ 20.0
Restructuring costs	13.1	26.3	$ 24.0
Cash payments	(17.8)	(30.3)
Asset write-offs	1.9	0.7	1.0
Foreign exchange translation and other	0.9	(0.7)
Restructuring Reserve - Ending Balance	8.9	14.6	20.0
Industrial Process
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve - Beginning Balance	6.5	4.9
Restructuring costs	$ 7.4	20.5	12.2
Number of positions eliminated | Employees	70
Cash payments	$ (7.3)	(18.0)
Asset write-offs	(1.8)	(0.5)
Foreign exchange translation and other	(0.9)	(0.4)
Restructuring Reserve - Ending Balance	3.9	6.5	$ 4.9
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve - Beginning Balance	14.3
Restructuring Reserve - Ending Balance	8.0	14.3
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve - Beginning Balance	0.3
Restructuring Reserve - Ending Balance	$ 0.9	$ 0.3