Revenue - Disaggregation (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues disaggregated by Group
Total revenue	$ 554.7	$ 424.0
Revenue recognized at a point in time
Revenues disaggregated by Group
Total revenue	480.0	367.7
Revenue recognized over time
Revenues disaggregated by Group
Total revenue	74.7	56.3
United States
Revenues disaggregated by Group
Total revenue	119.0	109.4
Germany
Revenues disaggregated by Group
Total revenue	70.1	40.9
Rest of Europe
Revenues disaggregated by Group
Total revenue	149.8	104.0
Asia Pacific
Revenues disaggregated by Group
Total revenue	180.5	137.2
Other
Revenues disaggregated by Group
Total revenue	35.3	32.5
Bruker BioSpin
Revenues disaggregated by Group
Total revenue	159.4	120.9
Bruker CALID
Revenues disaggregated by Group
Total revenue	192.4	140.5
Bruker Nano
Revenues disaggregated by Group
Total revenue	154.4	120.1
BEST
Revenues disaggregated by Group
Total revenue	52.4	46.2
Eliminations
Revenues disaggregated by Group
Total revenue	$ (3.9)	$ (3.7)