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Note 11 - Goodwill and Other Intangible Assets
3 Months Ended
Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets Disclosure [Text Block]
11.      Goodwill and Other Intangible Assets

The carrying amount of goodwill by segment for the periods ended March 31, 2015 and December 31, 2014 is as follows (in millions):

 
Optical
Communications
 
Display
Technologies
 
Specialty
Materials
 
Life
Sciences
 
Total
                             
Balance at December 31, 2014
$
238 
 
$
134 
 
$
198 
 
$
580 
 
$
1,150 
Acquired goodwill (1)
 
220 
                     
220 
Foreign currency translation adjustment
 
(2)
   
(1)
   
(5)
   
(19)
   
(27)
Balance at March 31, 2015
$
456 
 
$
133 
 
$
193 
 
$
561 
 
$
1,343 

(1)
The Company completed several acquisitions in the Optical Communications segment during the first quarter of 2015.  Refer to Note 9 (Acquisitions) to the Consolidated Financial Statements for additional information on these acquisitions.

Corning’s gross goodwill balances for the periods ended March 31, 2015 and December 31, 2014 were $7.8 billion and $7.6 billion, respectively.  Accumulated impairment losses were $6.5 billion for the periods ended March 31, 2015 and December 31, 2014, and were generated entirely through goodwill impairments related to the Optical Communications segment recorded primarily in 2001.

Other intangible assets are as follows (in millions):

 
March 31, 2015
 
December 31, 2014
 
Gross
 
Accumulated
amortization
 
Net
 
Gross
 
Accumulated
amortization
 
Net
Amortized intangible assets:
                                 
Patents, trademarks, and trade names 
$
353
 
$
152
 
$
201
 
$
302
 
$
149
 
$
153
Customer lists and other 
 
575
   
74
   
501
   
411
   
67
   
344
Total
$
928
 
$
226
 
$
702
 
$
713
 
$
216
 
$
497

Corning’s amortized intangible assets are primarily related to the Optical Communications and Life Sciences segments.  The net carrying amount of intangible assets increased during the first three months of 2015, primarily due to acquisitions of $233 million in other intangible assets offset by amortization of $12 million and foreign currency translation adjustments of $16 million.

Amortization expense related to these intangible assets is estimated to be $57 million for 2015, $55 million annually from 2016 to 2019, and $50 million for 2020.