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4. Intangible Assets, Goodwill and Other (Tables)
 3 Months Ended
Mar. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Changes to goodwill by segment
Changes to goodwill by segment were as follows (in millions):
 
Life
Science
 
Clinical
Diagnostics
 
Total
Balances as of January 1, 2016:
 
 
 
 
 
Goodwill
$
207.2

 
$
316.9

 
$
524.1

Accumulated impairment losses
(27.2
)
 
(1.0
)
 
(28.2
)
Goodwill, net
180.0

 
315.9

 
495.9

 
 
 
 
 
 
Acquisitions
2.8

 
—

 
2.8

Currency fluctuations
0.5

 
10.4

 
10.9

 
 
 
 
 
 
Balances as of March 31, 2016:
 
 
 
 
 
Goodwill
210.5

 
327.3

 
537.8

Accumulated impairment losses
(27.2
)
 
(1.0
)
 
(28.2
)
Goodwill, net
$
183.3

 
$
326.3

 
$
509.6
Schedule of identifiable purchased intangible assets with definite lives
Information regarding our identifiable purchased intangible assets with definite and indefinite lives is as follows (in millions):
 
March 31, 2016
 
Average
Remaining
Life (years)
 
Purchase
Price
 
Accumulated
Amortization
 
Net
Carrying
Amount
Customer relationships/lists
2-9
 
$
88.3

 
$
(50.4
)
 
$
37.9

Know how
1-10
 
187.6

 
(129.8
)
 
57.8

Developed product technology
3-13
 
134.9

 
(52.1
)
 
82.8

Licenses
3-10
 
39.6

 
(29.2
)
 
10.4

Tradenames
5-8
 
3.6

 
(2.5
)
 
1.1

Covenants not to compete
3-10
 
7.8

 
(1.9
)
 
5.9

     Total definite-lived intangible assets
 
 
461.8

 
(265.9
)
 
195.9

In-process research and development
 
 
46.4

 
—

 
46.4

     Total purchased intangible assets
 
 
$
508.2

 
$
(265.9
)
 
$
242.3


 
December 31, 2015
 
Average
Remaining
Life (years)
 
Purchase
Price
 
Accumulated
Amortization
 
Net
Carrying
Amount
Customer relationships/lists
2-10
 
$
84.7

 
$
(46.8
)
 
$
37.9

Know how
1-10
 
184.0

 
(121.6
)
 
62.4

Developed product technology
4-12
 
101.3

 
(48.9
)
 
52.4

Licenses
3-10
 
39.2

 
(28.5
)
 
10.7

Tradenames
5-9
 
3.5

 
(2.4
)
 
1.1

Covenants not to compete
3-7
 
4.8

 
(1.7
)
 
3.1

     Total definite-lived intangible assets
 
 
417.5

 
(249.9
)
 
167.6

In-process research and development
 
 
46.4

 
—

 
46.4

     Total purchased intangible assets
 
 
$
463.9

 
$
(249.9
)
 
$
214.0
Finite-lived Intangible Assets Amortization Expense [Table Text Block]
Amortization expense related to purchased intangible assets is as follows (in millions):

 
Three Months Ended
 
 
March 31,
 
 
2016
 
2015
 
 
 
 
 
 
Amortization expense
$
9.4

 
$
9.2