RESTRUCTURING (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net of cash paid	$ 31	$ (32)	$ 10
Asset impairments	35	1	12
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	65	101
Provision for estimated expenses incurred during the year	(80)	(35)	(98)
Payments made during the year	(49)	(67)
Foreign currency and other	0	(4)
Balance at the end of the period	96	65	101
Employee Termination Benefits Liability
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	64	98
Provision for estimated expenses incurred during the year	(80)	(32)
Payments made during the year	(49)	(64)
Foreign currency and other	0	(2)
Balance at the end of the period	95	64	98
Other Exit Costs Liability
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	1	3
Provision for estimated expenses incurred during the year	0	(3)
Payments made during the year	0	(3)
Foreign currency and other	0	(2)
Balance at the end of the period	1	1	3
Delphi Technologies FIS Segment [Member]
Restructuring Reserve [Roll Forward]
Provision for estimated expenses incurred during the year	(32)	(29)	(79)
Delphi Technologies PTP Segment [Member]
Restructuring Reserve [Roll Forward]
Provision for estimated expenses incurred during the year	(17)	(6)	(8)
Delphi Technologies E&E Segment [Member]
Restructuring Reserve [Roll Forward]
Provision for estimated expenses incurred during the year	(25)	0	(5)
Delphi Technologies Aftermarket Segment [Member]
Restructuring Reserve [Roll Forward]
Provision for estimated expenses incurred during the year	(2)	2	(6)
Intersegment Eliminations [Member]
Restructuring Reserve [Roll Forward]
Provision for estimated expenses incurred during the year	(4)	$ (2)	0
Restructuring program for continued rotation of manufacturing footprint to best cost locations | Employee Termination Benefits Liability
Restructuring Reserve [Roll Forward]
Provision for estimated expenses incurred during the year			(30)
European site closure | Powertrain Systems Segment | Employee Termination Benefits Liability
Restructuring Reserve [Roll Forward]
Provision for estimated expenses incurred during the year			$ (22)
Global Technical Center Realignment [Member] [Domain]
Restructuring Reserve [Roll Forward]
Provision for estimated expenses incurred during the year	(56)
Overhead Cost Reduction [Member]
Restructuring Reserve [Roll Forward]
Provision for estimated expenses incurred during the year	$ (24)