v2.4.0.6

Postretirement Benefit Plans - Summary of PME Multi-Employer Plan (Parenthetical) (Detail) (PME Multi-Employer Plan [Member]) | 12 Months Ended
--- | ---
Dec. 31, 2012
PME Multi-Employer Plan [Member] |
Multiemployer Plans [Line Items] |
Percentage of total contribution | 5.00%

X
- Definition Employers Contribution Not To Exceed Percentage Of Maximized Contributions + References No definition available. + Details
Name: | nxpi_EmployersContributionNotToExceedPercentageOfMaximizedContributions
Namespace Prefix: | nxpi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_MultiemployerPlansLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration