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Segment Reporting Reconciliation of Adjusted OI to Net Income (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Reconciliation of Segment Adjusted OI to Consolidated Net Income
Adjusted operating income		$ 420	$ 394	$ 1,321	$ 1,144
Restructuring		(65)	(18)	(100)	(101)
Other acquisition and portfolio project costs		(16)	(2)	(57)	(11)
Asset impairments		(1)	(1)	(2)	(2)
Deferred compensation related to nutonomy acquisition		15		44
Operating income		323	373	1,118	1,030
Interest expense		(34)	(35)	(104)	(103)
Other (expense) income, net		4	(7)	27	(22)
Income from continuing operations before income taxes and equity income		293	331	1,041	905
Income tax expense		(66)	(31)	(208)	(88)
Equity income, net of tax		4	6	17	24
Income from continuing operations		231	306	850	841
Income from discontinued operations, net of tax		0	107	0	310
Net income		231	413	850	1,151
Net income attributable to noncontrolling interest		9	18	30	52
Net income attributable to Aptiv		222	395	820	1,099
Signal and Power Solutions
Reconciliation of Segment Adjusted OI to Consolidated Net Income
Restructuring		(58)	(17)	(87)	(44)
Advanced Safety and User Experience
Reconciliation of Segment Adjusted OI to Consolidated Net Income
Restructuring		(7)	(1)	(13)	(57)
Operating Segments | Signal and Power Solutions
Reconciliation of Segment Adjusted OI to Consolidated Net Income
Adjusted operating income		346	319	1,083	940
Restructuring		(58)	(17)	(87)	(44)
Other acquisition and portfolio project costs		(11)	(1)	(39)	(8)
Asset impairments		0	(1)	(1)	(1)
Deferred compensation related to nutonomy acquisition		0		0
Operating income		277	300	956	887
Equity income, net of tax		4	6	17	24
Operating Segments | Advanced Safety and User Experience
Reconciliation of Segment Adjusted OI to Consolidated Net Income
Adjusted operating income		74	75	238	204
Restructuring		(7)	(1)	(13)	(57)
Other acquisition and portfolio project costs		(5)	(1)	(18)	(3)
Asset impairments		(1)	0	(1)	(1)
Deferred compensation related to nutonomy acquisition		15		44
Operating income		46	73	162	143
Equity income, net of tax		0	0	0	0
Intersegment Eliminations
Reconciliation of Segment Adjusted OI to Consolidated Net Income
Adjusted operating income	[1]	0	0	0	0
Restructuring		0	0	0	0
Other acquisition and portfolio project costs		0	0	0	0
Asset impairments		0	0	0	0
Deferred compensation related to nutonomy acquisition		0		0
Operating income	[1]	0	0	0	0
Equity income, net of tax	[1]	$ 0	$ 0	$ 0	$ 0
[1] Eliminations and Other includes the elimination of inter-segment transactions.

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Net income before interest expense, other income (expense), net, income tax expense, equity income (loss), income (loss) from discontinued operations, restructuring, other project and integration costs related to acquisitions and other portfolio transactions, gains (losses) on business divestitures and asset impairments.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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