Business Segment Information - Schedule of Revenue, Operating Income and Total Assets by Reportable Segment (Details) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) Segment	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Business segment information
Number of reportable segments | Segment				4
Total revenue		$ 681.9	$ 588.4	$ 1,367.2	$ 1,183.4
Operating Income (loss)		86.2	73.9	208.9	170.4
Assets		3,857.0		3,857.0		$ 3,611.8
Operating segments
Business segment information
Assets		3,735.5		3,735.5		3,508.4
Eliminations
Business segment information
Total revenue	[1]	(5.1)	(3.1)	(8.6)	(7.3)
Corporate, eliminations and other
Business segment information
Operating Income (loss)	[2]	(24.0)	(17.5)	(43.7)	(35.8)
Assets	[3]	(45.3)		(45.3)		(7.7)
BSI Life Science | Operating segments
Business segment information
Operating Income (loss)		23.8	28.0	71.2	65.8
BSI CALID | Operating segments
Business segment information
Operating Income (loss)		44.0	42.2	101.6	90.3
BSI NANO | Operating segments
Business segment information
Operating Income (loss)		31.3	14.6	60.7	36.9
BEST | Operating segments
Business segment information
Total revenue		72.7	59.2	134.9	118.9
Operating Income (loss)		11.1	$ 6.6	19.1	$ 13.2
Assets		$ 166.8		$ 166.8		$ 111.1

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

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

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