Changes in Accumulated Other Comprehensive Income (Loss) AOCI Reclassifications (Details) - USD ($) $ in Millions		3 Months Ended		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net income		$ 266	$ 39	$ 590	$ 609	$ 1,822
Cost of sales		3,827	3,543	14,854	13,182	11,126
Income tax expense				(121)	(101)	(49)
Net (loss) income attributable to noncontrolling interest				3	(19)	(18)
Net income attributable to Aptiv		$ 249	$ 31	594	590	1,804
Amount Reclassified from Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net income attributable to Aptiv				(1)	49	(34)
Amount Reclassified from Accumulated Other Comprehensive Income | Foreign currency translation adjustments:
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Liquidation of foreign subsidiary				(6)	0	0
Net income				(6)	0	0
Income before income taxes				(6)	0	0
Income tax expense				0	0	0
Net (loss) income attributable to noncontrolling interest				0	0	0
Net income attributable to Aptiv				(6)	0	0
Amount Reclassified from Accumulated Other Comprehensive Income | Gains (losses) on derivatives:
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net income				13	65	(21)
Income before income taxes				14	65	(21)
Income tax expense				(1)	0	0
Net (loss) income attributable to noncontrolling interest				0	0	0
Net income attributable to Aptiv				13	65	(21)
Amount Reclassified from Accumulated Other Comprehensive Income | Gains (losses) on derivatives: | Commodity derivatives
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of sales				(5)	68	(7)
Amount Reclassified from Accumulated Other Comprehensive Income | Gains (losses) on derivatives: | Foreign currency derivatives
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of sales				19	(3)	(14)
Amount Reclassified from Accumulated Other Comprehensive Income | Pension and postretirement plans:
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net income				(8)	(16)	(13)
Actuarial loss	[1]			(10)	(15)	(16)
Curtailment loss	[1]			0	(5)	0
Income before income taxes				(10)	(20)	(16)
Income tax expense				2	4	3
Net (loss) income attributable to noncontrolling interest				0	0	0
Net income attributable to Aptiv				$ (8)	$ (16)	$ (13)

[1] These accumulated other comprehensive loss components are included in the computation of net periodic pension cost (see Note 12. Pension Benefits for additional details).