Shareholders' Equity And Net Income Per Share Weighted Average Shares Outstanding and Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ 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
Numerator:
Income from continuing operations																	$ 1,152		$ 1,188		$ 1,309
Income from discontinued operations																	105		262		42
Net income attributable to Delphi	$ 281		$ 293		$ 258		$ 425		$ 192		$ 404		$ 645		$ 209		$ 1,257		$ 1,450		$ 1,351
Denominator:
Weighted average number of basic shares outstanding	270,380		272,190		272,920		276,620		279,290		282,970		287,770		290,900		273,020		285,200		300,270
Dilutive shares related to RSUs																	680		1,440		1,620
Weighted average ordinary shares outstanding, including dilutive shares	271,640		272,770		273,370		277,040		281,640		284,400		288,850		291,810		273,700		286,640		301,890
Basic net income per share:
Income from continuing operations, per basic share	$ 1.04	[1]	$ 1.08	[1]	$ 0.95	[1]	$ 1.16	[1]	$ 0.71	[1]	$ 1.24	[1]	$ 1.22	[1]	$ 0.99	[1]	$ 4.22	[1]	$ 4.16	[1]	$ 4.36
Income from discontinued operations, per basic share	0.00	[1]	0.00	[1]	0.00	[1]	0.38	[1]	(0.02)	[1]	0.19	[1]	1.02	[1]	(0.27)	[1]	0.38	[1]	0.92	[1]	0.14
Basic net income per share attributable to Delphi	1.04	[1]	1.08	[1]	0.95	[1]	1.54	[1]	0.69	[1]	1.43	[1]	2.24	[1]	0.72	[1]	4.60	[1]	5.08	[1]	4.50
Diluted net income per share:
Income from continuing operations, per diluted share	1.03	[1]	1.07	[1]	0.94	[1]	1.15	[1]	0.70	[1]	1.23	[1]	1.21	[1]	0.99	[1]	4.21	[1]	4.14	[1]	4.34
Income from discontinued operations, per diluted share	0.00	[1]	0.00	[1]	0.00	[1]	0.38	[1]	(0.02)	[1]	0.19	[1]	1.02	[1]	(0.27)	[1]	0.38	[1]	0.92	[1]	0.14
Diluted net income per share attributable to Delphi	$ 1.03	[1]	$ 1.07	[1]	$ 0.94	[1]	$ 1.53	[1]	$ 0.68	[1]	$ 1.42	[1]	$ 2.23	[1]	$ 0.72	[1]	4.59	[1]	5.06	[1]	4.48
Anti-dilutive securities share impact																	$ 0.00		$ 0.00		$ 0.00

[1] Due to the use of the weighted average shares outstanding for each quarter for computing earnings per share, the sum of the quarterly per share amounts may not equal the per share amount for the year.