Revenue - Disaggregation (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues disaggregated by Group
Revenue	$ 461.4	$ 431.7
Revenue recognized at a point in time
Revenues disaggregated by Group
Revenue	410.5	395.2
Revenue recognized over time
Revenues disaggregated by Group
Revenue	50.9	36.5
United States
Revenues disaggregated by Group
Revenue	117.6	104.8
Germany
Revenues disaggregated by Group
Revenue	42.8	41.5
Rest of Europe
Revenues disaggregated by Group
Revenue	112.3	119.9
Asia Pacific
Revenues disaggregated by Group
Revenue	152.2	126.9
Other
Revenues disaggregated by Group
Revenue	36.5	38.6
Bruker BioSpin
Revenues disaggregated by Group
Revenue	127.8	131.8
Bruker CALID
Revenues disaggregated by Group
Revenue	148.2	131.3
Bruker Nano
Revenues disaggregated by Group
Revenue	140.8	123.9
BEST
Revenues disaggregated by Group
Revenue	47.8	45.6
Eliminations
Revenues disaggregated by Group
Revenue	$ (3.2)	$ (0.9)