Business Segment Information - Information by Segment (Details) $ in Millions			12 Months Ended
		Feb. 26, 2020 USD ($)	Dec. 31, 2022 USD ($) Segment	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Business segment information
Number of reportable segments | Segment			4
Total revenue			$ 2,530.7	$ 2,417.9	$ 1,987.5
Operating Income			432.7	413.3	248.3
Assets			3,611.8	3,650.0
Capital Expenditures		$ 12.3	129.2	92.0	97.2
Depreciation and Amortization			88.8	89.1	80.4
Operating segments
Business segment information
Assets			3,508.4	3,560.5
Eliminations
Business segment information
Total revenue	[1]		(12.3)	(14.0)	(12.0)
Corporate, eliminations and other
Business segment information
Operating Income	[2]		(74.7)	(67.7)	(55.3)
Assets			(7.7)	(8.4)
BSI BioSpin
Business segment information
Capital Expenditures			14.5	36.6	43.0
Depreciation and Amortization			22.6	21.3	18.0
BSI BioSpin | Operating segments
Business segment information
Total revenue			696.7	691.0	600.0
Operating Income			167.1	158.2	121.6
BSI CALID
Business segment information
Capital Expenditures			33.9	24.7	16.1
Depreciation and Amortization			20.7	19.8	17.0
BSI CALID | Operating segments
Business segment information
Total revenue			822.2	819.6	653.9
Operating Income			196.0	227.2	152.2
BSI Nano
Business segment information
Capital Expenditures			20.2	16.8	10.6
Depreciation and Amortization			35.6	37.4	35.7
BSI Nano | Operating segments
Business segment information
Total revenue			787.0	697.5	556.1
Operating Income			113.0	73.4	23.6
BEST
Business segment information
Capital Expenditures			51.5	9.2	10.1
Depreciation and Amortization			6.0	6.3	5.7
BEST | Operating segments
Business segment information
Total revenue			237.1	223.8	189.5
Operating Income			31.3	22.2	6.2
Assets			111.1	97.9
Corporate
Business segment information
Capital Expenditures			9.1	4.7	17.4
Depreciation and Amortization			$ 3.9	$ 4.3	$ 4.0

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

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