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Note 10 - Goodwill and Other Intangible Assets
6 Months Ended
Jun. 30, 2016
Notes to Financial Statements  
Goodwill and Intangible Assets Disclosure [Text Block]
10.      Goodwill and Other Intangible Assets

The carrying amount of goodwill by segment for the periods ended June 30, 2016 and December 31, 2015 is as follows (in millions):
 
Optical
Communications
 
Display
Technologies
 
Specialty
Materials
 
Life
Sciences
 
All
Other
 
Total
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Balance at December 31, 2015
$
439
 
$
128
 
$
150
 
$
562
 
$
101
 
$
1,380
Acquired goodwill 
(1)
 
175
 
 
 
 
 
 
 
 
 
 
 
 
 
 
175
Foreign currency translation adjustment
 
8
 
 
1
 
 
 
 
 
4
 
 
1
 
 
14
Balance at June 30, 2016
$
622
 
$
129
 
$
150
 
$
566
 
$
102
 
$
1,569

(1)
The Company completed an acquisition in the Optical Communications segment during the first half of 2016 with a purchase price of $296 million.

Corning’s gross goodwill balances for the periods ended June 30, 2016 and December 31, 2015 were $8.1 billion and $7.9 billion, respectively.  Accumulated impairment losses were $6.5 billion for the periods ended June 30, 2016 and December 31, 2015, and were generated primarily through goodwill impairments related to the Optical Communications segment.

Other intangible assets are as follows (in millions):
 
June 30, 2016
 
December 31, 2015
 
Gross
 
Accumulated
amortization
 
Net
 
Gross
 
Accumulated
amortization
 
Net
Amortized intangible assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Patents, trademarks, and trade names 
$
367
 
$
171
 
$
196
 
$
350
 
$
162
 
$
188
Customer lists and other 
 
733
 
 
125
 
 
608
 
 
621
 
 
103
 
 
518
Total
$
1,100
 
$
296
 
$
804
 
$
971
 
$
265
 
$
706

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 2016, primarily due to acquisitions of $117 million of other intangible assets and foreign currency translation adjustments of $10 million, offset by amortization of $29 million.

Amortization expense related to these intangible assets is estimated to be $67 million for 2016, $72 million annually from 2017 to 2019, and $67 million annually from 2020 to 2021.