Identified Intangible Assets, Total Intangible Assets (Detail) - USD ($) $ in Millions  | 
Sep. 30, 2017  | 
Aug. 08, 2017  | 
Dec. 31, 2016  | 
|---|---|---|---|
| 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 | 
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
  | 
| X | ||||||||||
- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
  | 
| X | ||||||||||
- Definition Amount before accumulated amortization of intangible assets, excluding goodwill. No definition available. 
  | 
| X | ||||||||||
- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
  | 
| X | ||||||||||
- Details 
  |