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