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4. Intangible Assets, Goodwill and Other (Tables)
 12 Months Ended
Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]  
Changes to goodwill by segment

Changes to goodwill by segment were as follows (in millions):
 
 
2012
 
 
2011
 
 
Life
Science
 
Clinical
Diagnostics
 
Total
 
 
Life
Science
 
Clinical
Diagnostics
 
Total
Balances as of January 1:
 
 
 
 
 
 
 
 
 
 
 
 
 
Goodwill
 
$
176.8

 
$
319.3

 
$
496.1

 
 
$
70.7

 
$
320.5

 
$
391.2

Accumulated impairment losses
 
(27.2
)
 
—

 
(27.2
)
 
 
(27.2
)
 
—

 
(27.2
)
Goodwill, net
 
149.6

 
319.3

 
468.9

 
 
43.5

 
320.5

 
364.0

Acquisitions
 
17.4

 
4.1

 
21.5

 
 
106.1

 
—

 
106.1

Purchase adjustment
 
(0.6
)
 
—

 
(0.6
)
 
 
—

 
—

 
—

Goodwill written off related to excess property
 
—

 
(1.0
)
 
(1.0
)
 
 
—

 
—

 
—

Currency fluctuations
 
—

 
6.6

 
6.6

 
 
—

 
(1.2
)
 
(1.2
)
Balances as of December 31:
 
 
 
 
 
 
 
 
 
 
 
 
 
Goodwill
 
193.6

 
330.0

 
523.6

 
 
176.8

 
319.3

 
496.1

Accumulated impairment losses and write-offs
 
(27.2
)
 
(1.0
)
 
(28.2
)
 
 
(27.2
)
 
—

 
(27.2
)
Goodwill, net
 
$
166.4

 
$
329.0

 
$
495.4

 
 
$
149.6

 
$
319.3

 
$
468.9
Schedule of Finite-Lived Intangible Assets by Major-Class
Other than goodwill, we have no significant intangible assets with indefinite lives.  Information regarding our identifiable purchased intangible assets with definite lives is as follows (in millions):
 
December 31, 2012
 
Average
Remaining
Life (years)
 
Purchase
Price
 
Accumulated
Amortization
 
Net
Carrying
Amount
Customer relationships/lists
1-12
 
$
102.8

 
$
(38.4
)
 
$
64.4

Know how
1-13
 
189.3

 
(67.1
)
 
122.2

Developed product technology
1-10
 
74.6

 
(25.1
)
 
49.5

Licenses
1-8
 
35.6

 
(18.7
)
 
16.9

Tradenames
1-10
 
7.4

 
(4.3
)
 
3.1

Covenants not to compete
1-10
 
4.9

 
(0.2
)
 
4.7

Other
1
 
0.1

 
—

 
0.1

 
 
 
$
414.7

 
$
(153.8
)
 
$
260.9


 
December 31, 2011
 
Average
Remaining
Life (years)
 
Purchase
Price
 
Accumulated
Amortization
 
Net
Carrying
Amount
Customer relationships/lists
1-12
 
$
98.7

 
$
(30.9
)
 
$
67.8

Know how
1-14
 
187.0

 
(45.7
)
 
141.3

Developed product technology
1-11
 
47.6

 
(24.6
)
 
23.0

Licenses
1-9
 
35.6

 
(15.7
)
 
19.9

Tradenames
1-10
 
29.5

 
(22.1
)
 
7.4

Covenants not to compete
1-7
 
5.8

 
(5.7
)
 
0.1

Patents
—
 
1.0

 
(1.0
)
 
—

Other
—
 
0.1

 
(0.1
)
 
—

 
 
 
$
405.3

 
$
(145.8
)
 
$
259.5