Business Segment Information - Schedule of Revenue, Operating Income and Total Assets by Reportable Segment (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($) Segment	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Business segment information
Number of reportable segments | Segment	3
Total revenue	$ 595.0	$ 554.7
Operating Income (loss)	96.5	89.1
Assets	3,550.7		$ 3,650.0
Operating segments
Business segment information
Assets	3,463.0		3,560.5
Eliminations
Business segment information
Total revenue	(4.2)	(3.9)
Corporate, eliminations and other
Business segment information
Operating Income (loss)	18.3	(16.2)
Assets	7.2		(8.4)
BSI Life Science | Operating segments
Business segment information
Total revenue	361.0	351.8
Operating Income (loss)	85.9	88.9
BSI Nano | Operating segments
Business segment information
Total revenue	178.5	154.4
Operating Income (loss)	22.3	12.3
BEST | Operating segments
Business segment information
Total revenue	59.7	52.4
Operating Income (loss)	6.6	$ 4.1
Assets	$ 94.9		$ 97.9