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Goodwill and Other Purchased Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Changes to goodwill by segment

Changes to goodwill by segment are as follows (in millions):

			Life Science						Clinical Diagnostics						Total
Balances as of January 1, 2024:
Goodwill			$	333.3					$	415.5					$	748.8
Accumulated impairment losses			(41.8)						(293.4)						(335.2)
Goodwill, net			291.5						122.1						413.6
Foreign currency adjustments			—						(1.5)						(1.5)
Period change, net			—						(1.5)						(1.5)
Balances as of June 30, 2024:
Goodwill			333.3						414.0						747.3
Accumulated impairment losses			(41.8)						(293.4)						(335.2)
Goodwill, net			$	291.5					$	120.6					$	412.1

Schedule of identifiable purchased intangible assets with definite lives

Information regarding our identifiable purchased intangible assets with finite and indefinite lives is as follows (in millions):

			June 30, 2024
			Weighted-Average Remaining Amortization Period (years)						Purchase Price						Accumulated Amortization						Net Carrying Amount
Customer relationships/lists			5.0						$	105.0					$	(96.6)					$	8.4
Know how			1.3						166.3						(160.7)						5.6
Developed product technology			11.7						216.8						(136.8)						80.0
Licenses			4.4						58.9						(44.0)						14.9
Tradenames			5.1						5.9						(4.6)						1.3
Covenants not to compete			1.8						6.3						(5.1)						1.2
Total finite-lived intangible assets									559.2						(447.8)						111.4
In-process research and development									195.7						—						195.7
Total purchased intangible assets									$	754.9					$	(447.8)					$	307.1

			December 31, 2023
			Weighted-Average Remaining Amortization Period (years)						Purchase Price						Accumulated Amortization						Net Carrying Amount
Customer relationships/lists			5.2						$	108.7					$	(98.9)					$	9.8
Know how			1.8						168.9						(161.1)						7.8
Developed product technology			12.0						217.8						(132.9)						84.9
Licenses			4.9						59.2						(42.4)						16.8
Tradenames			5.6						6.1						(4.7)						1.4
Covenants not to compete			2.3						6.4						(4.8)						1.6
Total finite-lived intangible assets									567.1						(444.8)						122.3
In-process research and development									198.2						—						198.2
Total purchased intangible assets									$	765.3					$	(444.8)					$	320.5

Finite-lived Intangible Assets Amortization Expense [Table Text Block]

Amortization expense related to purchased intangible assets is as follows (in millions):

			Three Months Ended												Six Months Ended
			June 30,												June 30,
			2024						2023						2024						2023
Amortization expense			$	5.3					$	5.9					$	10.8					$	11.9

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