Postretirement Benefit Plans - Summary of PME Multi-Employer Plan (Detail) - PME Multiemployer Plan $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) employee	Dec. 31, 2022 USD ($) employee	Dec. 31, 2021 USD ($) employee
Multiemployer Plans [Line Items]
NXP’s contributions to the plan	$ 38	$ 33	$ 37
Employee contributions	$ 8	$ 6	$ 5
Average number of NXP’s active employees participating in the plan | employee	2,338	2,197	2,075