Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2017

Fair Value Disclosures [Abstract]

Fair Value, Assets Measured on Recurring Basis

As of December 31, 2017 and 2016, Aptiv had the following assets measured at fair value on a recurring basis:

	Total		Quoted Prices in Active Markets Level 1		Significant Other Observable Inputs Level 2		Significant Unobservable Inputs Level 3
	(in millions)
As of December 31, 2017
Commodity derivatives	$	35	$	—	$	35	$	—
Foreign currency derivatives	3		—		3		—
Total	$	38	$	—	$	38	$	—
As of December 31, 2016
Commodity derivatives	$	11	$	—	$	11	$	—
Foreign currency derivatives	8		—		8		—
Total	$	19	$	—	$	19	$	—

Fair Value, Liabilities Measured on Recurring Basis

As of December 31, 2017 and 2016, Aptiv had the following liabilities measured at fair value on a recurring basis:

	Total		Quoted Prices in Active Markets Level 1		Significant Other Observable Inputs Level 2		Significant Unobservable Inputs Level 3
	(in millions)
As of December 31, 2017
Commodity derivatives	$	—	$	—	$	—	$	—
Foreign currency derivatives	26		—		26		—
Contingent consideration	33		—		—		33
Total	$	59	$	—	$	26	$	33
As of December 31, 2016
Commodity derivatives	$	—	$	—	$	—	$	—
Foreign currency derivatives	56		—		56		—
Contingent consideration	35		—		—		35
Total	$	91	$	—	$	56	$	35

Changes in Fair Value of Liabilities Measured on Recurring Basis with Unobservable Inputs

The changes in the contingent consideration liability classified as a Level 3 measurement were as follows:

	Year Ended December 31,
	2017			2016
	(in millions)
Fair value at beginning of year	$	35		$	32
Additions	32			—
Payments	(22		)	(2		)
Interest accretion	2			2
Measurement adjustments	(14		)	3
Fair value at end of year	$	33		$	35