Restructuring Activities Restructuring Accruals (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve Beginning	$ 7.3	$ 5.8	$ 0.0
Restructuring Costs	15.6	10.9	12.2
Payments for Restructuring	(20.3)	(9.4)	(6.4)
Restructuring Reserve, Period Increase (Decrease)	0.2
Restructuring Reserve Ending	2.8	7.3	5.8
Energy & Chemicals [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve Beginning	0.1	1.1	0.0
Restructuring Costs	2.4	1.0	1.4
Payments for Restructuring	(2.5)	(2.0)	(0.3)
Restructuring Reserve, Period Increase (Decrease)	0.2
Restructuring Reserve Ending	0.2	0.1	1.1
Distribution & Storage [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve Beginning	2.9	3.4	0.0
Restructuring Costs	2.2	3.8	7.7
Payments for Restructuring	(3.9)	(4.3)	(4.3)
Restructuring Reserve, Period Increase (Decrease)	0.0
Restructuring Reserve Ending	1.2	2.9	3.4
BioMedical [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve Beginning	1.3	0.4	0.0
Restructuring Costs	5.0	1.9	1.8
Payments for Restructuring	(6.0)	(1.0)	(1.4)
Restructuring Reserve, Period Increase (Decrease)	0.0
Restructuring Reserve Ending	0.3	1.3	0.4
Corporate Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve Beginning	3.0	0.9	0.0
Restructuring Costs	6.0	4.2	1.3
Payments for Restructuring	(7.9)	(2.1)	(0.4)
Restructuring Reserve, Period Increase (Decrease)	0.0
Restructuring Reserve Ending	$ 1.1	$ 3.0	$ 0.9