Revenue - Disaggregation (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues disaggregated by Group
Total revenue		$ 2,530.7	$ 2,417.9	$ 1,987.5
Revenue recognized at a point in time
Revenues disaggregated by Group
Total revenue		2,204.7	2,104.7	1,726.7
Revenue recognized over time
Revenues disaggregated by Group
Total revenue		326.0	313.2	260.8
Eliminations
Revenues disaggregated by Group
Total revenue	[1]	(12.3)	(14.0)	(12.0)
Operating segments | BSI BioSpin [Member]
Revenues disaggregated by Group
Total revenue		696.7	691.0	600.0
Operating segments | BSI CALID [Member]
Revenues disaggregated by Group
Total revenue		822.2	819.6	653.9
Operating segments | Bsi Nano [Member]
Revenues disaggregated by Group
Total revenue		787.0	697.5	556.1
Operating segments | BEST
Revenues disaggregated by Group
Total revenue		$ 237.1	$ 223.8	$ 189.5

[1] Represents product and service revenue between reportable segments.