v2.4.0.6

Investments in Equity-Accounted Investees - Company's Share in Income (Loss) (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Schedule Of Results Related To Equity Accounted Investees [Line Items] |  |  |
Company's share in income (loss) | $ 7 | $ (77) | $ (86)
Trident Microsystems, Inc., [Member] |  |  |
Schedule Of Results Related To Equity Accounted Investees [Line Items] |  |  |
Company's share in income (loss) |  | (82) | (94)
ASMC [Member] |  |  |
Schedule Of Results Related To Equity Accounted Investees [Line Items] |  |  |
Company's share in income (loss) | 3 | 3 | 4
ASEN [Member] |  |  |
Schedule Of Results Related To Equity Accounted Investees [Line Items] |  |  |
Company's share in income (loss) | 4 | 2 | 4
Others [Member] |  |  |
Schedule Of Results Related To Equity Accounted Investees [Line Items] |  |  |
Company's share in income (loss) |  |  |

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- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Also included are the recycled foreign currency results earlier recognized in OCI when the investee is sold. + References No definition available. + Details
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Namespace Prefix: | nxpi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: | nxpi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration