Business Segment Information - Schedule of Revenue, Operating Income and Total Assets by Reportable Segment (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Business segment information
Operating Income (loss)		$ 124.5	$ 131.3	$ 333.4	$ 301.7
Assets		3,819.6		3,819.6		$ 3,611.8
Operating segments
Business segment information
Assets		3,692.6		3,692.6		3,508.4
Corporate, eliminations and other
Business segment information
Operating Income (loss)	[1]	(26.0)	(16.4)	(69.7)	(52.2)
Assets	[2]	(41.9)		(41.9)		(7.7)
BSI BioSpin | Operating segments
Business segment information
Operating Income (loss)		52.5	47.9	123.7	113.7
BSI CALID | Operating segments
Business segment information
Operating Income (loss)		50.0	56.3	151.6	146.6
BSI NANO | Operating segments
Business segment information
Operating Income (loss)		39.0	35.3	99.7	72.2
BEST | Operating segments
Business segment information
Operating Income (loss)		9.0	$ 8.2	28.1	$ 21.4
Assets		$ 168.9		$ 168.9		$ 111.1

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

[2] Assets not allocated to the reportable segments and eliminations of intercompany transactions.