Revenue - Disaggregation (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues disaggregated by Group
Total revenue		$ 2,964.5	$ 2,530.7	$ 2,417.9
Revenue recognized at a point in time
Revenues disaggregated by Group
Total revenue		2,575.3	2,204.7	2,104.7
Revenue recognized over time
Revenues disaggregated by Group
Total revenue		389.2	326.0	313.2
Eliminations
Revenues disaggregated by Group
Total revenue	[1],[2]	(17.0)	(12.3)	(14.0)
Operating segments | BSI BioSpin [Member]
Revenues disaggregated by Group
Total revenue		798.5	696.7	691.0
Operating segments | BSI CALID [Member]
Revenues disaggregated by Group
Total revenue		960.4	822.2	819.6
Operating segments | Bsi Nano [Member]
Revenues disaggregated by Group
Total revenue		941.9	787.0	697.5
Operating segments | BEST
Revenues disaggregated by Group
Total revenue		$ 280.7	$ 237.1	$ 223.8

[1] Represents corporate costs and eliminations not allocated to the reportable segments.

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