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Acquisitions and Divestments - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended | 1 Months Ended |  |  | 1 Months Ended | 12 Months Ended | 1 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2010 Digital Television and Set Top Box [Member] | Jul. 04, 2011 Sound Solutions business [Member] | Jul. 19, 2012 High Speed Data Converter Business [Member] | Dec. 14, 2010 NuTune [Member] | Jul. 26, 2010 Jennic Ltd. [Member] | Apr. 12, 2012 Catena Group [Member] | Dec. 31, 2012 Catena Group [Member] | Feb. 08, 2010 Trident Microsystems, Inc., [Member] | Dec. 31, 2010 Trident Microsystems, Inc., [Member]
Business Acquisition And Divestiture [Line Items] |  |  |  |  |  |  |  |  |  |
Purchase price consideration |  |  |  |  |  | $ 8 | $ 20 |  |  |
Purchase price, treasury shares | 3,032,838 |  |  |  |  |  | 599,000 |  |  |
Purchase price, shares value | 15 |  |  |  |  |  | 14 |  |  |
Purchase price allocation to goodwill |  |  |  |  |  |  | 11 |  |  |
Other intangible assets, amortization period | 6 years |  |  |  |  |  |  | 5 years |  |
Purchase price allocation to other intangible assets |  |  |  |  |  |  | 9 |  |  |
Purchase price allocation to assets acquired |  |  |  |  |  |  | 7 |  |  |
Purchase price allocation to liabilities assumed |  |  |  |  |  |  | 7 |  |  |
Gain (loss) on sale of business |  | (26) |  | 19 |  |  |  |  |  |
Proceeds from sale of business |  |  | 855 | 31 |  |  |  |  |  |
Joint venture holding percentage sold |  |  |  |  | 55.00% |  |  |  |  |
Ownership percentage acquired |  |  |  |  |  | 100.00% |  |  |  |
Additional contingent consideration for acquisition |  |  |  |  |  | 8 |  |  |  |
Purchase price, cash paid |  |  |  |  |  |  |  |  |  | 54
Purchase price, cash paid subsequent to closing date |  |  |  |  |  |  |  |  |  | 7
Shareholding percentage |  |  |  |  |  |  |  |  | 60.00% |
Shareholding value |  |  |  |  |  |  |  |  | $ 177 |

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