Acquisitions (Details) - USD ($) $ in Millions	Nov. 04, 2016	Dec. 17, 2015
Wallace [Member]
Business Acquisition [Line Items]
Business acquisition, effective date of acquisition	Nov. 04, 2016
Total purchase consideration	$ 167.4
Purchase price	72.2
Goodwill, acquired during period	94.8
Recognized identifiable assets (liabilities)	0.4
Research Instruments [Member]
Business Acquisition [Line Items]
Business acquisition, effective date of acquisition		Dec. 17, 2015
Total purchase consideration		$ 53.6
Purchase price		10.3
Goodwill, acquired during period		35.8
Recognized identifiable assets (liabilities)		7.6
Payments to acquire businesses, net of cash acquired		50.0
Technology-Based Intangible Assets [Member] | Wallace [Member]
Business Acquisition [Line Items]
Purchase price	66.5
Technology-Based Intangible Assets [Member] | Research Instruments [Member]
Business Acquisition [Line Items]
Purchase price		6.2
Trade Names [Member] | Wallace [Member]
Business Acquisition [Line Items]
Purchase price	3.2
Trade Names [Member] | Research Instruments [Member]
Business Acquisition [Line Items]
Purchase price		2.2
Customer Relationships [Member] | Wallace [Member]
Business Acquisition [Line Items]
Purchase price	$ 2.5
Customer Relationships [Member] | Research Instruments [Member]
Business Acquisition [Line Items]
Purchase price		$ 1.9