v3.20.4

Acquisitions and Divestments - Narrative (Detail) $ in Millions |  |  |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Feb. 03, 2020 USD ($) | Dec. 06, 2019 USD ($) | Mar. 27, 2019 USD ($) | Jul. 10, 2018 USD ($) | Jun. 30, 2018 USD ($) | Dec. 31, 2020 USD ($) business | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) business | Aug. 16, 2019 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash proceeds, net of cash divested |  |  |  |  |  | $ 161 | $ 37 | $ 159 |
Number of material acquisitions | business |  |  |  |  |  | 0 |  | 0 |
WeEn | Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash proceeds, net of cash divested |  |  | $ 37 |  |  |  |  |  |
Voice and Audio Solutions | Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration | $ 161 |  |  |  |  |  |  |  | $ 165
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal | $ 110 |  |  |  |  |  |  |  |
Suzhou ASEN Semiconductors Company Limited |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Sale of equity interest, percentage |  |  |  | 40.00% |  |  |  |  |
Proceeds from sale |  |  |  | $ 127 |  |  |  |  |
Net gain realized on sale of equity method investment |  |  |  | $ 51 |  |  |  |  |
WeEn |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash proceeds, net of cash divested |  |  |  |  | $ 32 |  |  |  |
Sale of equity interest, percentage |  |  |  |  | 24.00% |  |  |  |
Marvell |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Purchase consideration |  | $ 1,700 |  |  |  |  |  |  |
Acquisition related transaction costs |  | $ 5 |  |  |  |  |  |  |

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