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Identified Intangible Assets, Total Intangible Assets (Detail) - USD ($) $ in Millions | Sep. 30, 2017 | Aug. 08, 2017 | Dec. 31, 2016
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Business Acquisition [Line Items] |  |  |
Identified intangible assets, gross | $ 16,537 |  | $ 13,034
Identified intangible assets, net | $ 13,058 |  | $ 9,494
Mobileye [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Business Combination, Intangible Assets Other than Goodwill Acquired |  | $ 4,482 |

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