Goodwill and Intangible Assets - Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill
Balance at the beginning of the period	$ 582.6	$ 457.6	$ 339.5
Current period additions	958.3	114.1	131.9
Current period adjustments		(5.0)
Foreign currency impact	(33.6)	15.9	(13.8)
Balance at the end of the period	1,507.3	582.6	457.6
BSI BioSpin
Goodwill
Balance at the beginning of the period	86.5	57.8	42.4
Current period additions	141.3	25.8	18.6
Foreign currency impact	(6.6)	2.9	(3.2)
Balance at the end of the period	221.2	86.5	57.8
BSI CALID
Goodwill
Balance at the beginning of the period	201.5	107.4	57.9
Current period additions	536.0	83.8	55.3
Foreign currency impact	(21.5)	10.3	(5.8)
Balance at the end of the period	716.0	201.5	107.4
BSI NANO
Goodwill
Balance at the beginning of the period	294.3	292.1	238.9
Current period additions	281.0	4.5	58.0
Current period adjustments		(5.0)
Foreign currency impact	(5.5)	2.7	(4.8)
Balance at the end of the period	569.8	294.3	292.1
BEST
Goodwill
Balance at the beginning of the period	0.3	0.3	0.3
Balance at the end of the period	$ 0.3	$ 0.3	$ 0.3