Supplemental Guarantor And Non-Guarantor Condensed Consolidating Financial Statements Statement of 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		Jun. 30, 2015		Mar. 31, 2015		Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Net sales	$ 4,313		$ 4,091		$ 4,206		$ 4,051		$ 3,879		$ 3,631		$ 3,858		$ 3,797		$ 16,661		$ 15,165		$ 15,499
Cost of sales	3,238	[1]	3,256		3,348		3,265		3,161		2,862		3,076		3,056		13,107		12,155		12,471
Selling, general and administrative																	1,145		1,017		1,036
Amortization																	134		93		94
Restructuring					154				108								328		177		140
Total operating expenses																	14,714		13,442		13,741
Operating income	655		460		391	[2]	441		335	[3]	461		481		446		1,947	[4]	1,723	[5]	1,758	[6]
Interest expense																	(156)		(127)		(135)
Other expense, net																	(366)		(88)		(8)
Income from continuing operations before income taxes and equity income																	1,425		1,508		1,615
Income tax expense																	(242)		(263)		(255)
Income from continuing operations before equity income																	1,183		1,245		1,360
Equity in net income of affiliates																	35		16		20
Equity in net income (loss) of subsidiaries																	0		0		0
Income from continuing operations	306		306		271		335		224		364		369		304		1,218		1,261		1,380
Income from discontinued operations, net of tax	0		0		0		108	[7]	(3)		54	[8]	298	[8]	(75)	[8]	108		274		60
Net income	306		306	[9]	271		443		221		418		667		229	[10]	1,326		1,535		1,440
Net income attributable to noncontrolling interest																	69		85		89
Net income attributable to Delphi	$ 281		$ 293		$ 258		$ 425		$ 192		$ 404		$ 645		$ 209		1,257		1,450		1,351
Reportable Legal Entities | Parent
Net sales																	0		0		0
Cost of sales																	0		0		0
Selling, general and administrative																	87		32		51
Amortization																	0		0		0
Restructuring																	0		0		0
Total operating expenses																	87		32		51
Operating income																	(87)		(32)		(51)
Interest expense																	(208)		(105)		(24)
Other expense, net																	(5)		(20)		6
Income from continuing operations before income taxes and equity income																	(300)		(157)		(69)
Income tax expense																	60		0		0
Income from continuing operations before equity income																	(240)		(157)		(69)
Equity in net income of affiliates																	0		0		0
Equity in net income (loss) of subsidiaries																	1,497		1,607		1,420
Income from continuing operations																	1,257		1,450		1,351
Income from discontinued operations, net of tax																	0		0		0
Net income																	1,257		1,450		1,351
Net income attributable to noncontrolling interest																	0		0		0
Net income attributable to Delphi																	1,257		1,450		1,351
Reportable Legal Entities | Subsidiary Guarantors
Net sales																	0		0		0
Cost of sales																	0		0		0
Selling, general and administrative																	0		0		0
Amortization																	0		0		0
Restructuring																	0		0		0
Total operating expenses																	0		0		0
Operating income																	0		0		0
Interest expense																	(23)		(30)		(33)
Other expense, net																	(163)		89		68
Income from continuing operations before income taxes and equity income																	(186)		59		35
Income tax expense																	0		0		0
Income from continuing operations before equity income																	(186)		59		35
Equity in net income of affiliates																	0		0		0
Equity in net income (loss) of subsidiaries																	1,621		1,548		1,385
Income from continuing operations																	1,435		1,607		1,420
Income from discontinued operations, net of tax																	0		0		0
Net income																	1,435		1,607		1,420
Net income attributable to noncontrolling interest																	0		0		0
Net income attributable to Delphi																	1,435		1,607		1,420
Reportable Legal Entities | Subsidiary Issuer/Guarantor
Net sales																	0		0		0
Cost of sales																	0		(6)		0
Selling, general and administrative																	0		0		0
Amortization																	0		0		0
Restructuring																	0		0		0
Total operating expenses																	0		(6)		0
Operating income																	0		6		0
Interest expense																	(202)		(180)		(188)
Other expense, net																	(11)		18		25
Income from continuing operations before income taxes and equity income																	(213)		(156)		(163)
Income tax expense																	78		57		60
Income from continuing operations before equity income																	(135)		(99)		(103)
Equity in net income of affiliates																	0		0		0
Equity in net income (loss) of subsidiaries																	406		508		315
Income from continuing operations																	271		409		212
Income from discontinued operations, net of tax																	0		0		0
Net income																	271		409		212
Net income attributable to noncontrolling interest																	0		0		0
Net income attributable to Delphi																	271		409		212
Reportable Legal Entities | Non-Guarantor Subsidiaries
Net sales																	16,661		15,165		15,499
Cost of sales																	13,107		12,161		12,471
Selling, general and administrative																	1,058		985		985
Amortization																	134		93		94
Restructuring																	328		177		140
Total operating expenses																	14,627		13,416		13,690
Operating income																	2,034		1,749		1,809
Interest expense																	(68)		(90)		(74)
Other expense, net																	158		103		78
Income from continuing operations before income taxes and equity income																	2,124		1,762		1,813
Income tax expense																	(380)		(320)		(315)
Income from continuing operations before equity income																	1,744		1,442		1,498
Equity in net income of affiliates																	35		16		20
Equity in net income (loss) of subsidiaries																	0		0		0
Income from continuing operations																	1,779		1,458		1,518
Income from discontinued operations, net of tax																	108		274		60
Net income																	1,887		1,732		1,578
Net income attributable to noncontrolling interest																	69		85		89
Net income attributable to Delphi																	1,818		1,647		1,489
Eliminations
Net sales																	0		0		0
Cost of sales																	0		0		0
Selling, general and administrative																	0		0		0
Amortization																	0		0		0
Restructuring																	0		0		0
Total operating expenses																	0		0		0
Operating income																	0		0		0
Interest expense																	345		278		184
Other expense, net																	(345)		(278)		(185)
Income from continuing operations before income taxes and equity income																	0		0		(1)
Income tax expense																	0		0		0
Income from continuing operations before equity income																	0		0		(1)
Equity in net income of affiliates																	0		0		0
Equity in net income (loss) of subsidiaries																	(3,524)		(3,663)		(3,120)
Income from continuing operations																	(3,524)		(3,663)		(3,121)
Income from discontinued operations, net of tax																	0		0		0
Net income																	(3,524)		(3,663)		(3,121)
Net income attributable to noncontrolling interest																	0		0		0
Net income attributable to Delphi																	$ (3,524)		$ (3,663)		$ (3,121)

[1] In the fourth quarter of 2016, Delphi recognized a pre-tax gain of $141 million on the divestiture of its Mechatronics business.

[2] In the second quarter of 2016, Delphi recorded restructuring charges totaling $154 million, which includes employee-related and other costs, $88 million of which related to the initiation of the closure of a European manufacturing site within the Powertrain Systems segment.

[3] In the fourth quarter of 2015, Delphi recorded restructuring charges totaling $108 million, which includes employee-related and other costs.

[4] Includes a pre-tax gain of $141 million from the divestiture of the Electronics and Safety Mechatronics business, as well as charges recorded in 2016 related to costs associated with employee termination benefits and other exit costs of $117 million for Electrical/Electronic Architecture, $172 million for Powertrain Systems and $39 million for Electronics and Safety.

[5] Includes charges recorded in 2015 related to costs associated with employee termination benefits and other exit costs of $37 million for Electrical/Electronic Architecture, $115 million for Powertrain Systems and $25 million for Electronics and Safety

[6] Includes charges recorded in 2014 related to costs associated with employee termination benefits and other exit costs of $57 million for Electrical/Electronic Architecture, $55 million for Powertrain Systems and $28 million for Electronics and Safety.

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

[8] 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.

[9] In the third quarter of 2016, Delphi recognized losses on the extinguishment of debt of $73 million.

[10] In the first quarter of 2015, Delphi recognized a loss on extinguishment of debt of $52 million.