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Intangible Assets and Goodwill Gross Carrying Amount of Intangibles and Goodwill (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Gross Carrying Amount [Roll Forward] |  |  |
Balance at January 1 |  | $ 3,731 | $ 3,050
Acquisitions | [1] | 1,000 | 398
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) |  | (20) | 0
Foreign currency translation and other |  | (140) | 283
Balance at December 31 |  | $ 4,571 | $ 3,731
[1] | Primarily attributable to the 2018 acquisitions of KUM and Winchester Interconnect, and the 2017 acquisitions of Movimento Group and nuTonomy, Inc., as further described in Note 20. Acquisitions and Divestitures.

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- Definition Amount of assets, including financial assets and goodwill, lacking physical substance with a finite and infinite life acquired during period. + References No definition available. + Details
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- Definition Amount of increase (decrease) to assets, including financial assets and goodwill, lacking physical substance with a finite and infinite life for foreign currency translation adjustments and other adjustments. + References No definition available. + Details
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- Definition Gross Carrying Amount [Roll Forward] + References No definition available. + Details
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- Definition Gross Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance. + References No definition available. + Details
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- Definition Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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