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Postretirement Benefit Plans - Summary of PME Multi-Employer Plan (Detail) (PME Multi-Employer Plan [Member], USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2012
Employees
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Dec. 31, 2011
Employees
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Dec. 31, 2010
Employees
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PME Multi-Employer Plan [Member]
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| Multiemployer Plans [Line Items] | |||
| NXP's contributions to the plan | $ 53 | $ 59 | $ 53 |
| (including employees' contributions) | $ 4 | $ 2 | $ 2 |
| Average number of NXP's active employees participating in the plan | 3,229 | 3,256 | 3,537 |