Discontinued Operations Reconciliation of Major Classes of Profit or Loss of Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended												12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016		Dec. 31, 2015	Sep. 30, 2015	[2]	Jun. 30, 2015	[2]	Mar. 31, 2015	[2]	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on divestiture of discontinued operations, net of tax				$ 104
Income from discontinued operations, net of tax	$ 0	$ 0	$ 0	$ 108	[1]	$ (3)	$ 54		$ 298		$ (75)		$ 108	$ 274	$ 60
Income from discontinued operations attributable to Delphi													105	262	42
Discontinued Operations, Held-for-sale or Disposed of by Sale | Thermal Systems
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales													78	914	1,524
Cost of sales													67	828	1,379
Selling, general and administrative													4	27	45
Amortization													0	1	7
Restructuring													0	3	4
Other income and expense items that are not major, net													0	0	1
Income from discontinued operations before income taxes and equity income													7	55	90
Income tax expense on discontinued operations													0	(10)	(27)
Equity loss from discontinued operations, net of tax													0	(1)	(3)
Gain (loss) on divestiture of discontinued operations, net of tax													104	318	0
Adjustment to prior period gain on divestiture, net of tax													(3)	0	0
Impairment loss													0	(88)	0
Income from discontinued operations, net of tax													108	274	60
Income from discontinued operations attributable to noncontrolling interests													3	12	18
Income from discontinued operations attributable to Delphi													105	262	42
Income from discontinued operations before income taxes attributable to Delphi													115	270	65
Discontinued Operations, Held-for-sale or Disposed of by Sale | Thermal Systems | SDAAC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax expense of discontinued operations attributable to noncontrolling interest													$ 0	$ 2	$ 4

[1] In the first quarter of 2016, Delphi recognized an after-tax gain on the divestiture of discontinued operations of $104 million.

[2] In the first quarter of 2015, Delphi recognized an after-tax impairment loss of $88 million within discontinued operations, in the second quarter of 2015, Delphi recognized an after-tax gain on the divestiture of discontinued operations of $285 million and in the third quarter of 2015, Delphi recognized an after-tax gain on the divestiture of discontinued operations of $47 million.