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		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Numerator, basic:
Net income attributable to ordinary shareholders	$ 1,629	$ 286	$ 2,004	$ 298
Numerator, diluted:
Net income attributable to Aptiv	1,629	301	2,033	345
MCPS dividends (1)	0	(15)	(29)	(47)
Net income attributable to ordinary shareholders	$ 1,629	$ 286	$ 2,004	$ 298
Denominator:
Weighted average number of basic shares outstanding	282,840	270,930	275,560	270,880
Dilutive shares related to restricted stock units (“RSUs”)	170	170	130	220
Weighted average MCPS Converted Shares	0	0	7,750	0
Weighted average ordinary shares outstanding, including dilutive shares	283,010	271,100	283,440	271,100
Basic net income per share:
Basic net income per share attributable to ordinary shareholders	$ 5.76	$ 1.06	$ 7.27	$ 1.10
Diluted net income per share (Note 12):
Diluted net income per share attributable to ordinary shareholders	$ 5.76	$ 1.05	$ 7.17	$ 1.10
Antidilutive securities share impact		12,370		12,370
Preferred Shares
Numerator, diluted:
MCPS dividends (1)			$ 0