Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Net sales	$ 20,398	$ 19,713	$ 20,051
Operating expenses:
Cost of sales	16,500	16,002	16,612
Selling, general and administrative	1,673	1,465	1,436
Amortization	208	211	233
Restructuring	185	193	211
Goodwill impairment	648	0	0
Total operating expenses	19,214	17,871	18,492
Operating income	1,184	1,842	1,559
Interest expense	(361)	(337)	(285)
Other income (expense), net	50	41	63
Net gain on equity method transactions	46	605	0
Income before income taxes and equity loss	919	2,151	1,337
Income tax (expense) benefit	(700)	(223)	1,928
Income before equity loss	219	1,928	3,265
Equity loss, net of tax	(38)	(118)	(299)
Net income	181	1,810	2,966
Net income attributable to noncontrolling interest	19	24	28
Net loss attributable to redeemable noncontrolling interest	(3)	(1)	0
Net income attributable to Aptiv	165	1,787	2,938
Mandatory convertible preferred share dividends	0	0	(29)
Net income attributable to ordinary shareholders	$ 165	$ 1,787	$ 2,909
Basic net income per share:
Basic net income per share attributable to ordinary shareholders	$ 0.75	$ 6.97	$ 10.50
Weighted average ordinary shares outstanding, basic	220,000	256,380	276,920
Diluted net income per share:
Diluted net income per share attributable to ordinary shareholders	$ 0.75	$ 6.96	$ 10.39
Weighted average number of diluted shares outstanding	220,750	256,660	282,880