Business Combinations Contingent Consideration (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Combination, Contingent Consideration, Liability	$ 0.3	$ 1.9	$ 1.8	$ 1.1
Business Combination, Contingent Consideration, Inception Amount Recorded During Reporting Period	1.8		1.8
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	1.6	0.1	0.5
Payment for Contingent Consideration Liability, Investing Activities			0.6
Minimum [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	0.0
Maximum [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	11.3
Distribution & Storage [Member]
Business Combination, Contingent Consideration, Liability	0.3	1.9	1.8	0.0
Business Combination, Contingent Consideration, Inception Amount Recorded During Reporting Period			1.8
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	1.6	0.1	0.0
Payment for Contingent Consideration Liability, Investing Activities			0.0
BioMedical [Member]
Business Combination, Contingent Consideration, Liability	0.0	0.0	0.0	$ 1.1
Business Combination, Contingent Consideration, Inception Amount Recorded During Reporting Period			0.0
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	$ 0.0	$ 0.0	0.5
Payment for Contingent Consideration Liability, Investing Activities			$ 0.6