v2.4.0.6

Supplemental Financial Information - Other Income and Expense (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Component of Operating Other Cost and Expense [Line Items] |  |  |
Total other income | $ 30 | $ 25 | $ 27
Total other expense | (1) | (21) | (43)
Total other income (expense) | 29 | 4 | (16)
Gain (Loss) on Disposition of Property, Plant and Equipment [Member] |  |  |
Component of Operating Other Cost and Expense [Line Items] |  |  |
income | 1 | 8 | 8
expense |  | (18) |
Disposal Group Not Discontinued Operation Gain Loss On Disposal [Member] |  |  |
Component of Operating Other Cost and Expense [Line Items] |  |  |
income | 19 |  |
expense |  |  | (37)
Other Nonrecurring Income And Expense Other Items [Member] |  |  |
Component of Operating Other Cost and Expense [Line Items] |  |  |
income | 10 | 17 | 19
expense | $ (1) | $ (3) | $ (6)

X
- Definition The gain resulting from the sale of a disposal group that is not a discontinued operation. It is included in income from continuing operations before income taxes in the income statement. + References No definition available. + Details
Name: | nxpi_DisposalGroupNotDiscontinuedOperationGainOnDisposal
Namespace Prefix: | nxpi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The loss resulting from the sale of a disposal group that is not a discontinued operation. It is included in income from continuing operations before income taxes in the income statement. + References No definition available. + Details
Name: | nxpi_DisposalGroupNotDiscontinuedOperationLossOnDisposal
Namespace Prefix: | nxpi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The difference between the sale price or salvage price and the book value of a property, plant, and equipment asset that was sold or retired during the reporting period. This element refers to the gain. + References No definition available. + Details
Name: | nxpi_GainOnSaleOfPropertyPlantEquipment
Namespace Prefix: | nxpi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The difference between the sale price or salvage price and the book value of a property, plant, and equipment asset that was sold or retired during the reporting period. This element refers to the loss. + References No definition available. + Details
Name: | nxpi_LossOnSaleOfPropertyPlantEquipment
Namespace Prefix: | nxpi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Not specified expenses charged against earnings in the period of an event that is infrequent in occurrence or unusual in nature. + References No definition available. + Details
Name: | nxpi_OtherNonrecurringExpenseOtherItems
Namespace Prefix: | nxpi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Not specified gain recognized in the period that is infrequent in occurrence or unusual in nature. + References No definition available. + Details
Name: | nxpi_OtherNonrecurringIncomeOtherItems
Namespace Prefix: | nxpi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition Expenses charged against earnings in the period of an event that is infrequent in occurrence or unusual in nature. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6365513&loc=d3e15122-107781 + Details
Name: | us-gaap_OtherNonrecurringExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Gain recognized in the period that is infrequent in occurrence or unusual in nature. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6365513&loc=d3e15138-107781 + Details
Name: | us-gaap_OtherNonrecurringIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The aggregate amount of other nonrecurring expenses, not previously categorized, that are infrequent in occurrence or unusual in nature. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6365513&loc=d3e15122-107781 + Details
Name: | us-gaap_OtherNonrecurringIncomeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration