Revenue - Disaggregation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues disaggregated by Group
Revenue	$ 521.1	$ 466.6	$ 1,472.7	$ 1,342.0
Revenue recognized at a point in time
Revenues disaggregated by Group
Revenue	463.8	427.1	1,310.2	1,227.6
Revenue recognized over time
Revenues disaggregated by Group
Revenue	57.3	39.5	162.5	114.4
United States
Revenues disaggregated by Group
Revenue	135.5	134.1	379.3	347.3
Germany
Revenues disaggregated by Group
Revenue	57.7	44.9	150.1	135.3
Rest of Europe
Revenues disaggregated by Group
Revenue	121.0	114.6	350.0	346.4
Asia Pacific
Revenues disaggregated by Group
Revenue	158.5	134.4	464.5	396.8
Other
Revenues disaggregated by Group
Revenue	48.4	38.6	128.8	116.2
Bruker BioSpin
Revenues disaggregated by Group
Revenue	143.7	139.5	422.4	411.2
Bruker CALID
Revenues disaggregated by Group
Revenue	158.2	134.6	446.9	393.9
Bruker Nano
Revenues disaggregated by Group
Revenue	169.9	143.0	461.7	401.4
BEST
Revenues disaggregated by Group
Revenue	52.5	50.9	152.2	139.2
Eliminations
Revenues disaggregated by Group
Revenue	$ (3.2)	$ (1.4)	$ (10.5)	$ (3.7)