v3.20.4

Income Taxes - Expiration of Tax Credit Carryforwards (Detail) $ in Millions | Dec. 31, 2020 USD ($)
--- | ---
Tax Credit Carryforward [Line Items] |
Tax credit carryforwards | $ 468
2020 Tax Loss Carryforwards |
Tax Credit Carryforward [Line Items] |
Tax credit carryforwards | 468
2021 Tax Loss Carryforwards |
Tax Credit Carryforward [Line Items] |
Tax credit carryforwards | 1
2022 Tax Loss Carryforwards |
Tax Credit Carryforward [Line Items] |
Tax credit carryforwards | 11
2023 Tax Loss Carryforwards |
Tax Credit Carryforward [Line Items] |
Tax credit carryforwards | 10
2024 Tax Loss Carryforwards |
Tax Credit Carryforward [Line Items] |
Tax credit carryforwards | 11
2025 Tax Loss Carryforwards |
Tax Credit Carryforward [Line Items] |
Tax credit carryforwards | 18
2026-2030 Tax Loss Carryforwards |
Tax Credit Carryforward [Line Items] |
Tax credit carryforwards | 71
Later Tax Loss Carryforwards |
Tax Credit Carryforward [Line Items] |
Tax credit carryforwards | 294
Unlimited Tax Loss Carryforwards |
Tax Credit Carryforward [Line Items] |
Tax credit carryforwards | $ 52

X
- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
Name: | us-gaap_TaxCreditCarryforwardAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_TaxCreditCarryforwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_TaxCreditCarryforwardAxis=nxpi_TwoThousandAndNineteenTaxLossCreditCarryForwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxCreditCarryforwardAxis=nxpi_TwoThousandAndTwentyTaxLossCreditCarryForwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxCreditCarryforwardAxis=nxpi_TwoThousandAndTwentyOneTaxLossCreditCarryForwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxCreditCarryforwardAxis=nxpi_TwoThousandAndTwentyTwoTaxLossCreditCarryForwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxCreditCarryforwardAxis=nxpi_TwoThousandAndTwentyThreeTaxLossCreditCarryForwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxCreditCarryforwardAxis=nxpi_TwoThousandAndTwentyFourTaxLossCreditCarryForwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxCreditCarryforwardAxis=nxpi_TwoThousandAndTwentyFiveToTwoThousandAndTwentyNineTaxLossCreditCarryForwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxCreditCarryforwardAxis=nxpi_TaxCreditLossCarryforwardsThereafterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxCreditCarryforwardAxis=nxpi_TaxCreditLossCarryForwardsUnlimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |