Revenue Disaggregation of Revenue (Details) - USD ($) $ in Millions		3 Months Ended		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues		$ 4,134	$ 4,212	$ 15,618	$ 13,066	$ 14,357
Asia Pacific [Member]
Revenues	[1]			4,829	3,898	3,876
South America [Member]
Revenues				278	191	246
North America [Member]
Revenues				5,332	4,494	5,444
EMEA
Revenues	[2]			5,179	4,483	4,791
Intersegment Eliminations
Revenues	[3]			(36)	(29)	(37)
Intersegment Eliminations | Asia Pacific [Member]
Revenues				(19)	(15)	(22)
Intersegment Eliminations | South America [Member]
Revenues				0	0	0
Intersegment Eliminations | North America [Member]
Revenues				(7)	(3)	(3)
Intersegment Eliminations | EMEA
Revenues				(10)	(11)	(12)
Advanced Safety and User Experience | Operating Segments
Revenues				4,056	3,573	4,092
Advanced Safety and User Experience | Operating Segments | Asia Pacific [Member]
Revenues				1,050	978	1,070
Advanced Safety and User Experience | Operating Segments | South America [Member]
Revenues				0	0	4
Advanced Safety and User Experience | Operating Segments | North America [Member]
Revenues				1,204	970	1,260
Advanced Safety and User Experience | Operating Segments | EMEA
Revenues				1,802	1,625	1,758
Signal and Power Solutions | Operating Segments
Revenues				11,598	9,522	10,302
Signal and Power Solutions | Operating Segments | Asia Pacific [Member]
Revenues				3,798	2,935	2,828
Signal and Power Solutions | Operating Segments | South America [Member]
Revenues				278	191	242
Signal and Power Solutions | Operating Segments | North America [Member]
Revenues				4,135	3,527	4,187
Signal and Power Solutions | Operating Segments | EMEA
Revenues				$ 3,387	$ 2,869	$ 3,045

[1] Net sales and long-lived assets in Asia Pacific are primarily attributable to China.

[2] 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.

[3] Eliminations and Other includes the elimination of inter-segment transactions. Capital expenditures amounts are attributable to corporate administrative and support functions, including corporate headquarters and certain technical centers.(2)Includes charges recorded in 2021 related to costs associated with employee termination benefits and other exit costs of $8 million for Signal and Power Solutions and $16 million for Advanced Safety and User Experience.