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Note 10 - Goodwill and Other Intangible Assets | 9 Months Ended
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Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Intangible Assets Disclosure [Text Block] | 10. Goodwill and Other Intangible Assets The carrying amount of goodwill by segment for the periods ended September 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 |  | (10) |  |  | (7) |  |  | (3) |  |  | (13) |  |  | (33)
Balance at September 30, 2015 | $ | 441 |  | $ | 127 |  | $ | 195 |  | $ | 567 |  | $ | 1,330
(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 September 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 September 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):
| September 30, 2015 |  | December 31, 2014
| Gross |  | Accumulated amortization |  | Net |  | Gross |  | Accumulated amortization |  | Net
Amortized intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patents, trademarks, and trade names | $ | 353 |  | $ | 159 |  | $ | 194 |  | $ | 302 |  | $ | 149 |  | $ | 153
Customer lists and other |  | 579 |  |  | 95 |  |  | 484 |  |  | 411 |  |  | 67 |  |  | 344
Total | $ | 932 |  | $ | 254 |  | $ | 678 |  | $ | 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 nine months of 2015, primarily due to acquisitions of $242 million in other intangible assets offset by amortization of $40 million and foreign currency translation adjustments of $20 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.

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- Definition The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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