Segment Reporting Reconciliation of Sales and Operating Data (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Net sales	$ 945	$ 1,151
Depreciation, Depletion and Amortization	56	53
Adjusted Operating Income (Loss)	40	87
Operating (Loss) income	(20)	55
Equity income, net of tax	0	2
Net Income (Loss) Attributable to Noncontrolling Interest	3	3
Aftermarket Segment [Member]
Segment Reporting Information [Line Items]
Net sales	174	193
Operating Segments | Delphi Technologies FIS Segment [Member]
Segment Reporting Information [Line Items]
Net sales	393	454
Depreciation, Depletion and Amortization	30	28
Adjusted Operating Income (Loss)	18	23
Operating (Loss) income	(16)	13
Equity income, net of tax	0	2
Net Income (Loss) Attributable to Noncontrolling Interest	1	0
Operating Segments | Delphi Technologies PTP Segment [Member]
Segment Reporting Information [Line Items]
Net sales	261	327
Depreciation, Depletion and Amortization	11	14
Adjusted Operating Income (Loss)	35	61
Operating (Loss) income	27	57
Equity income, net of tax	0	0
Net Income (Loss) Attributable to Noncontrolling Interest	2	3
Operating Segments | Delphi Technologies E&E Segment [Member]
Segment Reporting Information [Line Items]
Net sales	178	243
Depreciation, Depletion and Amortization	13	10
Adjusted Operating Income (Loss)	1	17
Operating (Loss) income	(2)	13
Equity income, net of tax	0	0
Net Income (Loss) Attributable to Noncontrolling Interest	0	0
Operating Segments | Aftermarket Segment [Member]
Segment Reporting Information [Line Items]
Net sales	174	193
Depreciation, Depletion and Amortization	1	1
Adjusted Operating Income (Loss)	15	15
Operating (Loss) income	15	14
Equity income, net of tax	0	0
Net Income (Loss) Attributable to Noncontrolling Interest	0	0
Intersegment Eliminations
Segment Reporting Information [Line Items]
Net sales	(61)	(66)
Depreciation, Depletion and Amortization	1	0
Adjusted Operating Income (Loss)	(29)	(29)
Operating (Loss) income	(44)	(42)
Equity income, net of tax	0	0
Net Income (Loss) Attributable to Noncontrolling Interest	$ 0	$ 0