Revenue - Disaggregation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues disaggregated by Group
Total revenue	$ 608.9	$ 511.4	$ 1,734.4	$ 1,360.0
Revenue recognized at a point in time
Revenues disaggregated by Group
Total revenue	530.8	442.2	1,503.0	1,174.0
Revenue recognized over time
Revenues disaggregated by Group
Total revenue	78.1	69.2	231.4	186.0
United States
Revenues disaggregated by Group
Total revenue	163.2	120.1	442.0	332.1
Germany
Revenues disaggregated by Group
Total revenue	55.5	50.4	186.4	134.9
Rest of Europe
Revenues disaggregated by Group
Total revenue	155.4	142.9	459.9	357.7
Asia Pacific
Revenues disaggregated by Group
Total revenue	191.6	160.0	525.8	433.3
Other
Revenues disaggregated by Group
Total revenue	43.2	38.0	120.3	102.0
Bruker BioSpin
Revenues disaggregated by Group
Total revenue	186.5	152.1	494.4	398.1
Bruker CALID
Revenues disaggregated by Group
Total revenue	194.2	171.3	579.9	444.5
Bruker Nano
Revenues disaggregated by Group
Total revenue	174.9	147.1	504.6	392.7
BEST
Revenues disaggregated by Group
Total revenue	57.0	43.8	166.0	134.8
Eliminations
Revenues disaggregated by Group
Total revenue	$ (3.7)	$ (2.9)	$ (10.5)	$ (10.1)