Segment Reporting Reconciliation of Adjusted OI to Net Income (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
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted operating income			$ 1,585	$ 1,378	$ 1,011
Amortization			(149)	(148)	(144)
Restructuring			(85)	(24)	(136)
Other acquisition and portfolio project costs			(26)	(15)	(23)
Asset impairments			(8)	(2)	(10)
Deferred compensation related to acquisitions					14
Gain on business divestitures and other transactions			0	0	1,434
Other charges related to Ukraine/Russia conflict			54	0	0
Operating income	$ 440	$ 260	1,263	1,189	2,118
Interest expense			(219)	(150)	(164)
Other expense, net			(54)	(129)	0
Income before income taxes and equity loss			990	910	1,954
Income tax expense			(121)	(101)	(49)
Equity loss, net of tax			(279)	(200)	(83)
Net loss	266	39	590	609	1,822
Net (loss) income attributable to noncontrolling interest			(3)	19	18
Net income attributable to Aptiv	$ 249	$ 31	594	590	1,804
Net loss attributable to redeemable noncontrolling interest			(1)	0	0
Comprehensive income attributable to Aptiv			1	0	0
Signal and Power Solutions
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Restructuring			(30)	(8)	(90)
Signal and Power Solutions | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted operating income			1,441	1,225	900
Amortization			(139)	(141)	(138)
Restructuring			(30)	(8)	(90)
Other acquisition and portfolio project costs			(15)	(11)	(12)
Asset impairments			(8)	(1)	(4)
Deferred compensation related to acquisitions					0
Gain on business divestitures and other transactions					0
Other charges related to Ukraine/Russia conflict			(54)
Operating income			1,195	1,064	656
Equity loss, net of tax			20	15	15
Net loss attributable to redeemable noncontrolling interest			(1)
Advanced Safety and User Experience
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Restructuring			(55)	(16)	(46)
Advanced Safety and User Experience | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted operating income			144	153	111
Amortization			(10)	(7)	(6)
Restructuring			(55)	(16)	(46)
Other acquisition and portfolio project costs			(11)	(4)	(11)
Asset impairments			0	(1)	(6)
Deferred compensation related to acquisitions					14
Gain on business divestitures and other transactions					(1,434)
Other charges related to Ukraine/Russia conflict			0
Operating income			68	125	1,462
Equity loss, net of tax			(299)	$ (215)	$ (98)
Net loss attributable to redeemable noncontrolling interest			$ 0