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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract] |
Components of Other Intangible Assets | Components of other intangible assets —
|  |  | December 31, 2014 |  | December 31, 2013
| Weighted Average Useful Life (years) |  | Gross Carrying Amount |  | Accumulated Impairment and Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Impairment and Amortization |  | Net Carrying Amount
Amortizable intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Core technology | 7 |  | $ | 90 |  |  | $ | (85 | ) |  | $ | 5 |  |  | $ | 94 |  |  | $ | (83 | ) |  | $ | 11 |
Trademarks and trade names | 16 |  | 3 |  |  | (1 | ) |  | 2 |  |  | 4 |  |  | (1 | ) |  | 3 |
Customer relationships | 8 |  | 493 |  |  | (416 | ) |  | 77 |  |  | 527 |  |  | (399 | ) |  | 128 |
Non-amortizable intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |
Trademarks and trade names |  |  | 65 |  |  |  |  | 65 |  |  | 65 |  |  |  |  | 65 |
Used in research and development activities |  |  | 20 |  |  |  |  | 20 |  |  | 20 |  |  |  |  | 20 |
|  |  | $ | 671 |  |  | $ | (502 | ) |  | $ | 169 |  |  | $ | 710 |  |  | $ | (483 | ) |  | $ | 227 |
Amortization Expense Related to Amortizable Intangible Assets | Amortization expense related to amortizable intangible assets —
| 2014 |  | 2013 |  | 2012
Charged to cost of sales | $ | 7 |  |  | $ | 13 |  |  | $ | 13 |
Charged to amortization of intangibles | 42 |  |  | 74 |  |  | 74 |
Total amortization | $ | 49 |  |  | $ | 87 |  |  | $ | 87 |
Estimated Aggregate Pre-tax Amortization Expense Related to Intangible Assets | The following table provides the estimated aggregate pre-tax amortization expense related to intangible assets for each of the next five years based on December 31, 2014 exchange rates. Actual amounts may differ from these estimates due to such factors as currency translation, customer turnover, impairments, additional intangible asset acquisitions and other events.
| 2015 |  | 2016 |  | 2017 |  | 2018 |  | 2019
Amortization expense | $ | 19 |  |  | $ | 17 |  |  | $ | 15 |  |  | $ | 12 |  |  | $ | 10 |

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- Definition Tabular disclosure of the gross carrying amount, accumulated impairment and amortization and net carrying amount of intangibles assets, excluding goodwill, in total and by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of the company. + References No definition available. + Details
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- Definition Tabular disclosure of amortization expense of assets, excluding financial assets, that lack physical substance, having a limited useful life. + References No definition available. + Details
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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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