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Goodwill and Other Purchased Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Changes to goodwill by segment

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

						2023																					2022
						Life Science						Clinical Diagnostics						Total									Life Science						Clinical Diagnostics						Total
Balances as of January 1:
Goodwill						$	333.3					$	408.4					$	741.7								$	333.3					$	349.2					$	682.5
Accumulated impairment losses and write-offs						(41.8)						(293.4)						(335.2)									(41.8)						(293.4)						(335.2)
Goodwill, net						291.5						115.0						406.5									291.5						55.8						347.3
Acquisitions						—						0.4						0.4									—						55.9						55.9
Foreign currency adjustments						—						6.7						6.7									—						3.3						3.3
Period increase, net						—						7.1						7.1									—						59.2						59.2
Balances as of December 31:
Goodwill						333.3						415.5						748.8									333.3						408.4						741.7
Accumulated impairment losses and write-offs						(41.8)						(293.4)						(335.2)									(41.8)						(293.4)						(335.2)
Goodwill, net						$	291.5					$	122.1					$	413.6								$	291.5					$	115.0					$	406.5

Schedule of Finite-Lived Intangible Assets by Major-Class

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

			December 31, 2023
			Weighted-Average 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

			December 31, 2022
			Weighted-Average Amortization Period (years)						Purchase Price						Accumulated Amortization						Net Carrying Amount
Customer relationships/lists			5.0						$	104.7					$	(89.9)					$	14.8
Know how			2.8						166.2						(153.9)						12.3
Developed product technology			12.8						211.1						(121.6)						89.5
Licenses			5.8						59.0						(38.5)						20.5
Tradenames			6.6						6.1						(4.5)						1.6
Covenants not to compete			3.1						6.4						(4.0)						2.4
Total finite-lived intangible assets									553.5						(412.4)						141.1
In-process research and development									191.0						—						191.0
Total purchased intangible assets									$	744.5					$	(412.4)					$	332.1

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Tabular disclosure of the characteristics, including initial carrying value, residual amount, weighted average useful life, of finite-lived intangible assets acquired during the period by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company.

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Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

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