Business Segment Information - Schedule of Revenue, Operating Income and Total Assets by Reportable Segment (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Business segment information
Operating (loss) income:		$ 64.8	$ 122.7
Assets		4,506.4		$ 4,249.9
Operating segments
Business segment information
Assets		4,365.9		4,110.6
Corporate, eliminations and other
Business segment information
Operating (loss) income:	[1]	(26.4)	(19.7)
Assets	[2]	(39.8)		(46.7)
BSI BioSpin | Operating segments
Business segment information
Operating (loss) income:		31.2	47.4
BSI CALID | Operating segments
Business segment information
Operating (loss) income:		41.1	57.6
BSI NANO | Operating segments
Business segment information
Operating (loss) income:		10.8	29.4
BEST | Operating segments
Business segment information
Operating (loss) income:		8.1	$ 8.0
Assets		$ 180.3		$ 186.0

[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.