4. Intangible Assets, Goodwill and Other

6 Months Ended

Jun. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets Disclosure

GOODWILL AND OTHER PURCHASED INTANGIBLE ASSETS

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



	Life Science			Clinical Diagnostics			Total
Balances as of December 31, 2018:
Goodwill	$	234.5		$	320.5		$	555.0
Accumulated impairment losses	(41.8		)	(293.4		)	(335.2		)
Goodwill, net	192.7			27.1			219.8

Acquisitions	15.6			—			15.6

Balances as of June 30, 2019:
Goodwill	250.1			320.5			570.6
Accumulated impairment losses	(41.8		)	(293.4		)	(335.2		)
Goodwill, net	$	208.3		$	27.1		$	235.4

In conjunction with the purchase of all the issued and outstanding stock of a small private company in March 2019 (see Note 2, "Acquisitions"), we recorded $15.6 million of goodwill that included workforce and time-to-market advantage, $5.5 million of Developed product technology, a definite-lived intangible asset, and $0.2 million of In-process research and development, an indefinite-lived intangible asset.

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



	June 30, 2019
	Average Remaining Life (years)	Purchase Price		Accumulated Amortization			Net Carrying Amount
Customer relationships/lists	1-6	$	88.4	$	(71.2	)	$	17.2
Know how	1-7	189.8		(161.4		)	28.4
Developed product technology	1-10	135.5		(89.8		)	45.7
Licenses	6-10	76.2		(42.6		)	33.6
Tradenames	2-5	3.9		(3.4		)	0.5
Covenants not to compete	7	3.1		(1.2		)	1.9
Total definite-lived intangible assets		$	496.9	$	(369.6	)	$	127.3
In-process research and development		0.2		—			0.2
Total purchased intangible assets		$	497.1	$	(369.6	)	$	127.5



	December 31, 2018
	Average Remaining Life (years)	Purchase Price		Accumulated Amortization			Net Carrying Amount
Customer relationships/lists	1-6	$	88.7	$	(68.3	)	$	20.4
Know how	1-7	190.6		(159.8		)	30.8
Developed product technology	1-10	130.4		(86.6		)	43.8
Licenses	7-11	76.3		(40.9		)	35.4
Tradenames	2-6	3.9		(3.3		)	0.6
Covenants not to compete	7	3.2		(1.1		)	2.1
Total definite-lived intangible assets		$	493.1	$	(360.0	)	$	133.1

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



	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2019		2018		2019		2018

Amortization expense	$	5.6	$	7.4	$	11.1	$	14.8