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3. Intangible Assets, Goodwill and Other (Tables)

6 Months Ended

Jun. 30, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Changes to goodwill by segment

Goodwill by segment are as follows (in millions):

			Life Science						Clinical Diagnostics						Total
Balances as of June 30, 2022 and December 31, 2021:
Goodwill			$	333.3					$	349.2					$	682.5
Accumulated impairment losses			(41.8)						(293.4)						(335.2)
Goodwill, net			$	291.5					$	55.8					$	347.3

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, 2022
			Weighted-Average Remaining Amortization Period (years)						Purchase Price						Accumulated Amortization						Net Carrying Amount
Customer relationships/lists			5.15						$	106.3					$	(88.7)					$	17.6
Know how			3.25						164.4						(149.9)						14.5
Developed product technology			13.17						210.6						(116.4)						94.2
Licenses			6.33						58.8						(36.5)						22.3
Tradenames			7.02						6.1						(4.3)						1.8
Covenants not to compete			3.42						6.4						(3.4)						3.0
Total finite-lived intangible assets									552.6						(399.2)						153.4
In-process research and development									86.3						—						86.3
Total purchased intangible assets									$	638.9					$	(399.2)					$	239.7

			December 31, 2021
			Weighted-Average Remaining Amortization Period (years)						Purchase Price						Accumulated Amortization						Net Carrying Amount
Customer relationships/lists			5.27						$	111.8					$	(90.7)					$	21.1
Know how			3.75						171.6						(154.9)						16.7
Developed product technology			13.42						215.6						(115.6)						100.0
Licenses			6.79						64.9						(40.6)						24.3
Tradenames			7.33						6.3						(4.4)						1.9
Covenants not to compete			3.78						6.5						(2.9)						3.6
Total finite-lived intangible assets									576.7						(409.1)						167.6
In-process research and development									86.3						—						86.3
Total purchased intangible assets									$	663.0					$	(409.1)					$	253.9

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,
			2022						2021						2022						2021
Amortization expense			$	6.3					$	7.2					$	12.6					$	14.4

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