Acquisitions - 2017, Consideration (Details) € in Millions, $ in Millions					12 Months Ended
	May 05, 2017 EUR (€)	May 05, 2017 USD ($)	Jan. 23, 2017 USD ($)	Jan. 02, 2017 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Acquisitions
Cash Consideration					$ 191.6	$ 66.3	$ 24.3
2017 Acquisitions
Acquisitions
Consideration					71.3
Cash Consideration					$ 66.3
InVivo Biotech Svs GmbH
Acquisitions
Consideration				$ 9.1
Cash Consideration				$ 9.1
Hysitron, Incorporated
Acquisitions
Consideration			$ 28.8
Cash Consideration			$ 27.2
Luxendo GmbH
Acquisitions
Consideration		$ 21.9
Cash Consideration	€ 17	$ 18.8
Other
Acquisitions
Consideration						11.5	15.5
Cash Consideration						$ 11.2	$ 8.4