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Note 11 - Goodwill and Other Intangible Assets
6 Months Ended
Jun. 30, 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 June 30, 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 
Measurement period adjustments 
 
(7)
                     
(7)
Foreign currency translation adjustment
 
(1)
   
(2)
   
(4)
   
(13)
   
(20)
Balance at June 30, 2015
$
450 
 
$
132 
 
$
194 
 
$
567 
 
$
1,343

(1)
The Company completed several acquisitions in the Optical Communications segment during the first half 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 June 30, 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 June 30, 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):

 
June 30, 2015
 
December 31, 2014
 
Gross
 
Accumulated
amortization
 
Net
 
Gross
 
Accumulated
amortization
 
Net
Amortized intangible assets:
                                 
Patents, trademarks, and trade names 
$
358
 
$
155
 
$
203
 
$
302
 
$
149
 
$
153
Customer lists and other 
 
584
   
87
   
497
   
411
   
67
   
344
Total
$
942
 
$
242
 
$
700
 
$
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 six months of 2015, primarily due to acquisitions of $242 million in other intangible assets offset by amortization of $28 million and foreign currency translation adjustments of $11 million.

Amortization expense related to these intangible assets is estimated to be $57 million for 2015, $56 million annually from 2016 to 2019, and $51 million for 2020.