Quarterly Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jun. 12, 2020
Revenues		$ 4,134	$ 4,212	$ 15,618	$ 13,066	$ 14,357
Cost of sales		3,543	3,433	13,182	11,126	11,711
Gross profit		591	779
Operating income		260	446	1,189	2,118	1,276
Net income		39	315
Net income attributable to Aptiv		31	299	590	1,804	990
Net Income attributable to ordinary shareholders		$ 15	$ 283	$ 527	$ 1,769	$ 990
Basic net income per share attributable to ordinary shareholders		$ 0.06	$ 1.05	$ 1.95	$ 6.72	$ 3.85
Weighted average number of basic shares outstanding		270,520,000	270,030,000.00	270,460,000	263,430,000	256,810,000
Diluted net income per share attributable to Aptiv		$ 0.06	$ 1.04	$ 1.94	$ 6.66	$ 3.85
Weighted average number of diluted shares outstanding		271,470,000	270,910,000	271,220,000	270,700,000	257,390,000
Restructuring				$ 24	$ 136	$ 148
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount				9	10	19
Impairment of Intangible Assets (Excluding Goodwill)				0	0	8
Change in tax law				(7)	(2)	1
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount				(11)	(21)	(16)
Gain on autonomous driving joint venture				$ 0	$ 1,434	0
Preferred shares, issued		11,500,000	11,500,000	11,500,000	11,500,000		11,500,000
EMEA
Revenues	[1]			$ 5,179	$ 4,483	4,791
Restructuring				57		74
United States
Revenues	[2]			5,196	4,382	5,308
Advanced Safety and User Experience
Restructuring				$ 16	46	$ 44
Advanced Safety and User Experience | Motional autonomous driving joint venture [Member]
Gain on autonomous driving joint venture					$ 1,400

[1] Includes Aptiv’s country of domicile, Jersey. The Company had no sales or long-lived assets in Jersey in any period. The largest portion of net sales in the Europe, Middle East & Africa region was $1,436 million, $1,248 million and $1,340 million in Germany for the years ended December 31, 2021, 2020 and 2019, respectively.

[2] Includes net sales and machinery, equipment and tooling that relate to the Company’s maquiladora operations located in Mexico. These assets are utilized to produce products sold to customers located in the U.S.