Revenue - Disaggregation (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues disaggregated by Group
Total revenue	$ 588,400,000	$ 570,800,000	$ 1,183,400,000	$ 1,125,500,000
Revenue recognized at a point in time
Revenues disaggregated by Group
Total revenue	509,200,000	492,200,000	1,023,200,000	972,200,000
Revenue recognized over time
Revenues disaggregated by Group
Total revenue	79,200,000	78,600,000	160,200,000	153,300,000
United States
Revenues disaggregated by Group
Total revenue	171,500,000	159,800,000	326,500,000	278,800,000
Germany
Revenues disaggregated by Group
Total revenue	67,300,000	60,800,000	125,800,000	130,900,000
Rest of Europe
Revenues disaggregated by Group
Total revenue	130,300,000	154,700,000	273,700,000	304,500,000
CHINA
Revenues disaggregated by Group
Total revenue	93,100,000	80,400,000	179,400,000	147,200,000
Rest of Asia Pacific
Revenues disaggregated by Group
Total revenue	83,400,000	73,300,000	186,000,000.0	187,000,000.0
Other
Revenues disaggregated by Group
Total revenue	42,800,000	41,800,000	92,000,000.0	77,100,000
Operating segments | Bruker BioSpin
Revenues disaggregated by Group
Total revenue	159,800,000	148,500,000	317,600,000	307,900,000
Operating segments | Bruker CALID
Revenues disaggregated by Group
Total revenue	190,300,000	193,300,000	393,500,000	385,700,000
Operating segments | Bruker Nano
Revenues disaggregated by Group
Total revenue	182,200,000	175,300,000	360,700,000	329,700,000
Operating segments | BEST
Revenues disaggregated by Group
Total revenue	59,200,000	56,600,000	118,900,000	109,000,000.0
Eliminations
Revenues disaggregated by Group
Total revenue	$ (3,100,000)	$ (2,900,000)	$ (7,300,000)	$ (6,800,000)