v3.10.0.1

Restructuring Charges - Components of Restructuring Charges Less Releases Recorded in Liabilities (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Net restructuring charges	$ 6	$ 1	$ 68
Personnel Lay-Off Costs [Member]
Restructuring Cost and Reserve [Line Items]
Net restructuring charges	4	7	52
Other Exit Costs [Member]
Restructuring Cost and Reserve [Line Items]
Net restructuring charges	2	10	19
Release of Provisions/Accruals [Member]
Restructuring Cost and Reserve [Line Items]
Net restructuring charges	$ 0	$ (16)	$ (3)

X

- Definition

Restructuring charges less restructuring reserve accrual adjustment.

+ References

No definition available.

+ Details

Name:	nxpi_RestructuringChargesLessRestructuringReserveAccrualAdjustment
Namespace Prefix:	nxpi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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_RestructuringCostAndReserveLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_RestructuringCostAndReserveAxis=us-gaap_EmployeeSeveranceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RestructuringCostAndReserveAxis=us-gaap_OtherRestructuringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RestructuringCostAndReserveAxis=nxpi_ReleaseOfRestructuringLiabilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: