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Intangible Assets and Goodwill (Tables)
6 Months Ended
Jun. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible assets
Intangible assets, net of accumulated amortization, impairment charges and adjustments, are summarized as follows:
 
 
 
As of June 30, 2015
 
As of December 31, 2014
(In millions)
Estimated
Life
 
Cost
 
Accumulated
Amortization
 
Net
 
Cost
 
Accumulated
Amortization
 
Net
Out-licensed patents
13-23 years
 
$
543.3

 
$
(493.9
)
 
$
49.4

 
$
543.3

 
$
(481.7
)
 
$
61.6

Developed 
technology
15-23 years
 
3,005.3

 
(2,492.1
)
 
513.2

 
3,005.3

 
(2,396.8
)
 
608.5

In-process research and development
Indefinite until commercialization
 
752.0

 

 
752.0

 
314.1

 

 
314.1

Trademarks and 
tradenames
Indefinite
 
64.0

 

 
64.0

 
64.0

 

 
64.0

Acquired and in-licensed rights 
and patents
3-17 years
 
3,296.7

 
(380.5
)
 
2,916.2

 
3,280.4

 
(300.1
)
 
2,980.3

Total intangible assets
 
 
$
7,661.3

 
$
(3,366.5
)
 
$
4,294.8

 
$
7,207.1

 
$
(3,178.6
)
 
$
4,028.5

Estimated future amortization for acquired intangible assets
Based upon this recent analysis, the estimated future amortization for acquired intangible assets is expected to be as follows:
(In millions)
As of
June 30,
2015
2015 (remaining six months)
$
185.5

2016
312.5

2017
285.8

2018
281.6

2019
270.6

2020
263.8

Total
$
1,599.8

Summary of roll forward of the changes in goodwill
The following table provides a roll forward of the changes in our goodwill balance:
(In millions)
 
Balance, as of December 31, 2014
$
1,760.2

Increase to goodwill
390.0

Other
4.1

Balance, as of June 30, 2015
$
2,154.3