Aptiv (APTV) 10-Q 5 Aug 21 2021 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Jul. 30, 2021
Document Information [Line Items]
Document Fiscal Year Focus	2021
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Transition Report	false
Entity File Number	001-35346
Entity Registrant Name	APTIV PLC
Entity Central Index Key	0001521332
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Incorporation, State or Country Code	Y9
Entity Tax Identification Number	98-1029562
Entity Address, Address Line One	5 Hanover Quay
Entity Address, Address Line Two	Grand Canal Dock
Entity Address, City or Town	Dublin
Entity Address, Postal Zip Code	D02 VY79
Entity Address, Country	IE
City Area Code	353
Country Region	1
Local Phone Number	259-7013
Entity Information, Former Legal or Registered Name	N/A
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		270,507,574
Ordinary Shares
Document Information [Line Items]
Title of 12(b) Security	Ordinary Shares. $0.01 par value per share
Trading Symbol	APTV
Security Exchange Name	NYSE
Title of 12(b) Security	Ordinary Shares. $0.01 par value per share
Trading Symbol	APTV
Security Exchange Name	NYSE
Preferred Stock
Document Information [Line Items]
Title of 12(b) Security	5.50% Mandatory Convertible Preferred Shares, Series A, $0.01 par value per share
Trading Symbol	APTV PRA
Security Exchange Name	NYSE
Title of 12(b) Security	5.50% Mandatory Convertible Preferred Shares, Series A, $0.01 par value per share
Trading Symbol	APTV PRA
Security Exchange Name	NYSE
Euro-Denominated Senior Notes, 1.500% Due 2025
Document Information [Line Items]
Title of 12(b) Security	1.500% Senior Notes due 2025
Trading Symbol	APTV
Security Exchange Name	NYSE
Title of 12(b) Security	1.500% Senior Notes due 2025
Trading Symbol	APTV
Security Exchange Name	NYSE
Senior Notes, 4.25% Due 2026
Document Information [Line Items]
Title of 12(b) Security	4.250% Senior Notes due 2026
Trading Symbol	APTV
Security Exchange Name	NYSE
Title of 12(b) Security	4.250% Senior Notes due 2026
Trading Symbol	APTV
Security Exchange Name	NYSE
Euro-denominated Senior Notes, 1.600% Due 2028
Document Information [Line Items]
Title of 12(b) Security	1.600% Senior Notes due 2028
Trading Symbol	APTV
Security Exchange Name	NYSE
Title of 12(b) Security	1.600% Senior Notes due 2028
Trading Symbol	APTV
Security Exchange Name	NYSE
Senior Notes, 4.35% Due 2029
Document Information [Line Items]
Title of 12(b) Security	4.350% Senior Notes due 2029
Trading Symbol	APTV
Security Exchange Name	NYSE
Title of 12(b) Security	4.350% Senior Notes due 2029
Trading Symbol	APTV
Security Exchange Name	NYSE
Senior Notes, 4.400% Due 2046
Document Information [Line Items]
Title of 12(b) Security	4.400% Senior Notes due 2046
Trading Symbol	APTV
Security Exchange Name	NYSE
Title of 12(b) Security	4.400% Senior Notes due 2046
Trading Symbol	APTV
Security Exchange Name	NYSE
Senior Notes, 5.40% Due 2049
Document Information [Line Items]
Title of 12(b) Security	5.400% Senior Notes due 2049
Trading Symbol	APTV
Security Exchange Name	NYSE
Title of 12(b) Security	5.400% Senior Notes due 2049
Trading Symbol	APTV
Security Exchange Name	NYSE

Consolidated Statements Of Oper

Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Net sales	$ 3,807	$ 1,960	$ 7,830	$ 5,186
Operating expenses:
Cost of sales	3,205	1,947	6,501	4,672
Selling, general and administrative	266	217	521	469
Amortization	37	35	74	71
Restructuring	14	72	20	100
Gain on autonomous driving joint venture			0	1,434
Total operating expenses	3,522	2,271	7,116	3,878
Operating income (loss)	285	(311)	714	1,308
Interest expense	(38)	(44)	(78)	(87)
Other (expense) income, net	0	(6)	1	(7)
Income (loss) before income taxes and equity loss	247	(361)	637	1,214
Income tax (expense) benefit	(28)	14	(76)	4
Income (loss) before equity loss	219	(347)	561	1,218
Equity loss, net of tax	(53)	(18)	(95)	(16)
Net income (loss)	166	(365)	466	1,202
Net income (loss) attributable to noncontrolling interest	3	1	8	(4)
Net income (loss) attributable to Aptiv	163	(366)	458	1,206
Mandatory convertible preferred share dividends (Note 12)	16	3	32	3
Net income (loss) attributable to ordinary shareholders	$ 147	$ (369)	$ 426	$ 1,203
Basic net income per share:
Basic net income (loss) per share attributable to ordinary shareholders	$ 0.54	$ (1.43)	$ 1.58	$ 4.69
Weighted average number of basic shares outstanding	270,490	258,030	270,400	256,770
Diluted net income per share (Note 12):
Diluted net income (loss) per share attributable to ordinary shareholders	$ 0.54	$ (1.43)	$ 1.57	$ 4.66
Weighted average number of diluted shares outstanding	271,060	258,210	271,100	258,590

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 166	$ (365)	$ 466	$ 1,202
Other comprehensive income (loss):
Currency translation adjustments	43	19	(49)	(112)
Net change in unrecognized gain (loss) on derivative instruments, net of tax (Note 14)	5	76	(2)	(77)
Employee benefit plans adjustment, net of tax	23	3	30	10
Other comprehensive income (loss)	71	98	(21)	(179)
Comprehensive income (loss)	237	(267)	445	1,023
Comprehensive income (loss) attributable to noncontrolling interests	4	2	8	(8)
Comprehensive income (loss) attributable to Aptiv	$ 233	$ (269)	$ 437	$ 1,031

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 2,926	$ 2,821
Restricted cash	52	32
Accounts receivable, net of allowance for doubtful accounts of $44 million and $40 million, respectively (Note 2)	2,654	2,812
Inventories (Note 3)	1,801	1,297
Other current assets (Note 4)	622	503
Total current assets	8,055	7,465
Long-term assets:
Property, net	3,193	3,301
Operating lease, right-of-use assets	378	380
Investments in affiliates	1,908	2,011
Intangible assets, net (Note 2)	1,021	1,091
Goodwill (Note 2)	2,547	2,580
Other long-term assets (Note 4)	678	694
Total long-term assets	9,725	10,057
Total assets	17,780	17,522
Current liabilities:
Short-term debt (Note 8)	16	90
Accounts payable	2,574	2,571
Accrued liabilities (Note 5)	1,315	1,385
Total current liabilities	3,905	4,046
Long-term liabilities:
Long-term debt (Note 8)	4,031	4,011
Pension benefit obligations	503	525
Long-term operating lease liabilities	295	300
Other long-term liabilities (Note 5)	521	540
Total long-term liabilities	5,350	5,376
Total liabilities	9,255	9,422
Commitments and contingencies (Note 10)
Shareholders' equity:
Preferred shares, $0.01 par value per share, 50,000,000 shares authorized; 11,500,000 shares of 5.50% Mandatory Convertible Preferred Shares, Series A, issued and outstanding as of June 30, 2021 and December 31, 2020.	0	0
Ordinary shares, $0.01 par value per share, 1,200,000,000 shares authorized, 270,507,574 and 270,025,374 issued and outstanding as of June 30, 2021 and December 31, 2020, respectively	3	3
Additional paid-in capital	3,909	3,897
Retained earnings	4,976	4,550
Accumulated other comprehensive loss (Note 13)	(566)	(545)
Total Aptiv shareholders' equity	8,322	7,905
Noncontrolling interest	203	195
Total shareholders' equity	8,525	8,100
Total liabilities and shareholders' equity	$ 17,780	$ 17,522

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Preferred shares, par value per share	$ 0.01	$ 0.01
Preferred shares, authorized	50,000,000	50,000,000
Preferred shares, outstanding	11,500,000	11,500,000
Ordinary shares, par value per share	$ 0.01	$ 0.01
Ordinary shares, authorized	1,200,000,000	1,200,000,000
Ordinary shares, outstanding	270,507,574	270,025,374
Accounts Receivable, Allowance for Credit Loss, Current	$ 44	$ 40

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ 466	$ 1,202
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	316	293
Amortization	74	71
Amortization of deferred debt issuance costs	6	4
Restructuring expense, net of cash paid	(28)	13
Deferred income taxes	4	(22)
Pension and other postretirement benefit expenses	24	20
Loss from equity method investments, net of dividends received	99	16
Loss on modification of debt	1	4
Loss on sale of assets	0	3
Share-based compensation	57	12
Gain on autonomous driving joint venture	0	(1,434)
Changes in operating assets and liabilities:
Accounts receivable, net	160	734
Inventories	(501)	74
Other assets	(63)	9
Accounts payable	23	(902)
Accrued and other long-term liabilities	(53)	12
Other, net	(24)	(38)
Pension contributions	(12)	(16)
Net cash provided by operating activities	549	55
Cash flows from investing activities:
Capital expenditures	(261)	(372)
Proceeds from sale of property / investments	2	4
Cost of business acquisitions and other transactions, net of cash acquired	(45)	(27)
Cost of technology investments	(1)	0
Settlement of derivatives	(9)	1
Net cash used in investing activities	(314)	(394)
Cash flows from financing activities:
Net repayments under other short-term debt agreements	(12)	(200)
Net repayments under other long-term debt agreements	(8)	(20)
Fees related to modification of debt agreements	(6)	(18)
Proceeds from the public offering of ordinary shares, net of issuance costs	0	1,115
Proceeds from the public offering of preferred shares, net of issuance costs	0	1,115
Payments of ordinary dividends, noncontrolling Interest	0	(6)
Repurchase of ordinary shares	0	(57)
Distribution of mandatory convertible preferred share cash dividends	32	0
Distribution of ordinary share cash dividends	0	56
Taxes withheld and paid on employees' restricted share awards	(45)	(33)
Net cash (used in) provided by financing activities	(103)	1,840
Effect of exchange rate fluctuations on cash, cash equivalents and restricted cash	(7)	(13)
Increase in cash, cash equivalents and restricted cash	125	1,488
Cash, cash equivalents and restricted cash at beginning of period	2,853	429
Cash, cash equivalents and restricted cash at end of period	$ 2,978	$ 1,917

Consolidated Statement Of Share

Consolidated Statement Of Shareholders' Equity - USD ($) $ in Millions	Total	Ordinary Shares	Preferred Stock	Ordinary Shares	Preferred Stock	Additional Paid in Capital	Additional Paid in CapitalOrdinary Shares	Additional Paid in CapitalPreferred Stock	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interest	Parent
Balance at Dec. 31, 2019	$ 4,011			$ 3	$ 0	$ 1,645			$ 2,890	$ (719)	$ 192	$ 3,819
Balance, in shares at Dec. 31, 2019				255,000,000	0
Mandatory convertible preferred share cumulative dividends			$ 0
Balance at Mar. 31, 2020	5,153			$ 3	$ 0	1,606			4,353	(991)	182	4,971
Balance, in shares at Mar. 31, 2020				255,000,000	0
Balance at Dec. 31, 2019	4,011			$ 3	$ 0	1,645			2,890	(719)	192	3,819
Balance, in shares at Dec. 31, 2019				255,000,000	0
Net income (loss)	1,202								1,206		(4)	1,206
Other comprehensive income (loss)	(179)									(175)	(4)	(175)
Dividends on ordinary shares	(56)					1			(57)		0	(56)
Mandatory convertible preferred share cumulative dividends	3								(3)
Taxes witheld on employees' restricted share award vestings	$ (33)					(33)						(33)
Repurchase of ordinary shares, in shares	(1,059,075)			(1,000,000)
Repurchase of ordinary shares	$ (57)					(6)			(51)			(57)
Share-based compensation, in shares				1,000,000
Share based compensation	12					12						12
Adjustment for recently adopted accounting pronouncements	1								(1)	0		(1)
Balance at Jun. 30, 2020	7,126			$ 3	$ 0	3,849			3,984	(894)	184	6,942
Balance, in shares at Jun. 30, 2020				270,000,000	12,000,000
Shares Issued During Period, Shares, New Issues				15,000,000	12,000,000
Shares Issued During Period, Value, New Issues		$ 1,115	1,115				$ 1,115	$ 1,115
Balance at Dec. 31, 2019	4,011			$ 3	$ 0	1,645			2,890	(719)	192	3,819
Balance, in shares at Dec. 31, 2019				255,000,000	0
Mandatory convertible preferred share cumulative dividends			32
Balance at Dec. 31, 2020	8,100			$ 3	$ 0	3,897			4,550	(545)	195	7,905
Balance, in shares at Dec. 31, 2020				270,000,000	12,000,000
Balance at Mar. 31, 2020	5,153			$ 3	$ 0	1,606			4,353	(991)	182	4,971
Balance, in shares at Mar. 31, 2020				255,000,000	0
Net income (loss)	(365)								(366)		1	(366)
Other comprehensive income (loss)	98									97	1	97
Mandatory convertible preferred share cumulative dividends	3		0						(3)			(3)
Share-based compensation, in shares				0
Share based compensation	13					13						13
Balance at Jun. 30, 2020	7,126			$ 3	$ 0	3,849			3,984	(894)	184	6,942
Balance, in shares at Jun. 30, 2020				270,000,000	12,000,000
Shares Issued During Period, Shares, New Issues				15,000,000	12,000,000
Shares Issued During Period, Value, New Issues		$ 1,115	1,115				$ 1,115	$ 1,115
Balance at Dec. 31, 2020	8,100			$ 3	$ 0	3,897			4,550	(545)	195	7,905
Balance, in shares at Dec. 31, 2020				270,000,000	12,000,000
Mandatory convertible preferred share cumulative dividends			16
Balance at Mar. 31, 2021	8,276			$ 3	$ 0	3,881			4,829	(636)	199	8,077
Balance, in shares at Mar. 31, 2021				270,000,000	12,000,000
Balance at Dec. 31, 2020	8,100			$ 3	$ 0	3,897			4,550	(545)	195	7,905
Balance, in shares at Dec. 31, 2020				270,000,000	12,000,000
Net income (loss)	466								458		8	458
Other comprehensive income (loss)	(21)									(21)	0	(21)
Mandatory convertible preferred share cumulative dividends	32		32						(32)			(32)
Taxes witheld on employees' restricted share award vestings	(45)					(45)						(45)
Share-based compensation, in shares				1,000,000
Share based compensation	57					57						57
Balance at Jun. 30, 2021	8,525			$ 3	$ 0	3,909			4,976	(566)	203	8,322
Balance, in shares at Jun. 30, 2021				271,000,000	12,000,000
Balance at Mar. 31, 2021	8,276			$ 3	$ 0	3,881			4,829	(636)	199	8,077
Balance, in shares at Mar. 31, 2021				270,000,000	12,000,000
Net income (loss)	166								163		3	163
Other comprehensive income (loss)	71									70	1	70
Mandatory convertible preferred share cumulative dividends	16		$ 16						(16)			(16)
Share-based compensation, in shares				1,000,000
Share based compensation	28					28						28
Balance at Jun. 30, 2021	$ 8,525			$ 3	$ 0	$ 3,909			$ 4,976	$ (566)	$ 203	$ 8,322
Balance, in shares at Jun. 30, 2021				271,000,000	12,000,000

General

General	6 Months Ended
	Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	GENERAL General and basis of presentation —“Aptiv,” the “Company,” “we,” “us” and “our” refer to Aptiv PLC, a public limited company formed under the laws of Jersey on May 19, 2011 as Delphi Automotive PLC, which completed an initial public offering on November 22, 2011. On December 4, 2017, the Company completed the separation (the “Separation”) of its former Powertrain Systems segment by distributing to Aptiv shareholders on a pro rata basis all of the issued and outstanding ordinary shares of Delphi Technologies PLC, a public limited company formed to hold the spun-off business. Following the Separation, the remaining company changed its name to Aptiv PLC and New York Stock Exchange (“NYSE”) symbol to “APTV.” The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and all adjustments, consisting of only normal recurring items, which are necessary for a fair presentation, have been included. The consolidated financial statements and notes thereto included in this report should be read in conjunction with Aptiv’s 2020 Annual Report on Form 10-K. Nature of operations —Aptiv is a leading global technology and mobility architecture company primarily serving the automotive sector. We design and manufacture vehicle components and provide electrical, electronic and active safety technology solutions to the global automotive and commercial vehicle markets. Aptiv operates manufacturing facilities and technical centers utilizing a regional service model that enables the Company to efficiently and effectively serve its global customers from best cost countries. In line with the long-term growth in emerging markets, Aptiv has been increasing its focus on these markets, particularly in China, where the Company has a major manufacturing base and strong customer relationships.

Significant Accounting Policies

Significant Accounting Policies	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Significant Accounting Policies	SIGNIFICANT ACCOUNTING POLICIES Consolidation —The consolidated financial statements include the accounts of Aptiv and United States (“U.S.”) and non-U.S. subsidiaries in which Aptiv holds a controlling financial or management interest and variable interest entities of which Aptiv has determined that it is the primary beneficiary. Aptiv’s share of the earnings or losses of non-controlled affiliates, over which Aptiv exercises significant influence (generally a 20% to 50% ownership interest), is included in the consolidated operating results using the equity method of accounting. When Aptiv does not have the ability to exercise significant influence (generally when ownership interest is less than 20%), investments in non-consolidated affiliates without readily determinable fair value are measured at cost, less impairments, adjusted for observable price changes in orderly transactions for identical or similar investments of the same issuer, while investments in publicly traded equity securities are measured at fair value based on quoted prices for identical assets on active market exchanges as of each reporting date. The Company monitors its investments in affiliates for indicators of other-than-temporary declines in value on an ongoing basis. If the Company determines that such a decline has occurred, an impairment loss is recorded, which is measured as the difference between carrying value and estimated fair value. Estimated fair value is generally determined using an income approach based on discounted cash flows or negotiated transaction values. Intercompany transactions and balances between consolidated Aptiv businesses have been eliminated. During the three months ended June 30, 2021, Aptiv received a dividend of $4 million from one of its equity method investments. The dividend was recognized as a reduction to the investment and represented a return on investment in cash flows from operating activities. Aptiv’s equity investments without readily determinable fair values totaled $75 million and $113 million as of June 30, 2021 and December 31, 2020, respectively, and are classified within other long-term assets in the consolidated balance sheets. Aptiv’s investments in publicly traded equity securities totaled $49 million as of June 30, 2021 and are classified within other long-term assets in the consolidated balance sheets. There were no publicly traded equity securities held as of December 31, 2020. Refer to Note 17. Acquisitions and Divestitures for additional information regarding Aptiv’s equity investments. Use of estimates —Preparation of consolidated financial statements in conformity with U.S. GAAP requires the use of estimates and assumptions that affect amounts reported therein. Generally, matters subject to estimation and judgment include amounts related to accounts receivable realization, inventory obsolescence, asset impairments, useful lives of intangible and fixed assets, deferred tax asset valuation allowances, income taxes, pension benefit plan assumptions, accruals related to litigation, warranty costs, environmental remediation costs, contingent consideration arrangements, worker’s compensation accruals and healthcare accruals. Due to the inherent uncertainty involved in making estimates, including the duration and severity of the impacts of the COVID-19 pandemic and the ongoing global supply chain disruptions, actual results reported in future periods may be based upon amounts that differ from those estimates. Revenue recognition —Aptiv recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods or services. Accordingly, revenue is measured based on consideration specified in a contract with a customer. Refer to Note 20. Revenue for additional information regarding the Company’s revenue recognition policies. Net income (loss) per share —Basic net income (loss) per share is computed by dividing net income (loss) attributable to ordinary shareholders by the weighted average number of ordinary shares outstanding during the period. Diluted net income (loss) per share reflects the weighted average dilutive impact of all potentially dilutive securities from the date of issuance and is computed using the treasury stock and if-converted methods. The if-converted method is used to determine if the impact of conversion of the 5.50% Mandatory Convertible Preferred Shares, Series A, $0.01 par value per share (the “MCPS”) into ordinary shares is more dilutive than the MCPS dividends to net income (loss) per share. If so, the MCPS are assumed to have been converted at the later of the beginning of the period or the time of issuance, and the resulting ordinary shares are included in the denominator and the MCPS dividends are added back to the numerator. Unless otherwise noted, share and per share amounts included in these notes are on a diluted basis. Refer to Note 12. Shareholders’ Equity and Net Income Per Share for additional information including the calculation of basic and diluted net income (loss) per share. Cash and cash equivalents —Cash and cash equivalents are defined as short-term, highly liquid investments with original maturities of three months or less, for which the book value approximates fair value. Restricted cash —Restricted cash includes balances on deposit at financial institutions that have issued letters of credit in favor of Aptiv and cash deposited into escrow accounts. Refer to Note 15. Fair Value of Financial Instruments for further information regarding amounts deposited into an escrow account. Accounts receivable —Aptiv enters into agreements to sell certain of its accounts receivable, primarily in Europe. Sales of receivables are accounted for in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 860, Transfers and Servicing (“ASC 860”). Agreements which result in true sales of the transferred receivables, as defined in ASC 860, which occur when receivables are transferred without recourse to the Company, are excluded from amounts reported in the consolidated balance sheets. Cash proceeds received from such sales are included in operating cash flows. Agreements that allow Aptiv to maintain effective control over the transferred receivables and which do not qualify as a sale, as defined in ASC 860, are accounted for as secured borrowings and recorded in the consolidated balance sheets within accounts receivable, net and short-term debt. The expenses associated with receivables factoring are recorded in the consolidated statements of operations within interest expense. Credit losses —Aptiv is exposed to credit losses primarily through the sale of vehicle components and services. Aptiv assesses the creditworthiness of a counterparty by conducting ongoing credit reviews, which considers the Company’s expected billing exposure and timing for payment, as well as the counterparty’s established credit rating. When a credit rating is not available, the Company’s assessment is based on an analysis of the counterparty’s financial statements. Aptiv also considers contract terms and conditions, country and political risk, and business strategy in its evaluation. Based on the outcome of this review, the Company establishes a credit limit for each counterparty. The Company continues to monitor its ongoing credit exposure through active review of counterparty balances against contract terms and due dates, which includes timely account reconciliation, payment confirmation and dispute resolution. The Company may also employ collection agencies and legal counsel to pursue recovery of defaulted receivables, if necessary. Aptiv primarily utilizes historical loss and recovery data, combined with information on current economic conditions and reasonable and supportable forecasts to develop the estimate of the allowance for doubtful accounts in accordance with ASC Topic 326, Financial Instruments – Credit Losses (“ASC 326”). As of June 30, 2021 and December 31, 2020, the Company reported $2,654 million and $2,812 million, respectively, of accounts receivable, net of allowances, which includes the allowance for doubtful accounts of $44 million and $40 million, respectively. Changes in the allowance for doubtful accounts were not material for the six months ended June 30, 2021. Intangible assets —Intangible assets were $1,021 million and $1,091 million as of June 30, 2021 and December 31, 2020, respectively. Aptiv amortizes definite-lived intangible assets over their estimated useful lives. Aptiv has definite-lived intangible assets related to patents and developed technology, customer relationships and trade names. Indefinite-lived in-process research and development intangible assets are not amortized, but are tested for impairment annually, or more frequently when indicators of potential impairment exist, until the completion or abandonment of the associated research and development efforts. Upon completion of the projects, the assets will be amortized over the expected economic life of the asset, which will be determined on that date. Should the project be determined to be abandoned, and if the asset developed has no alternative use, the full value of the asset will be charged to expense. The Company also has intangible assets related to acquired trade names that are classified as indefinite-lived when there are no foreseeable limits on the periods of time over which they are expected to contribute cash flows. These indefinite-lived trade name assets are tested for impairment annually, or more frequently when indicators of potential impairment exist. Costs to renew or extend the term of acquired intangible assets are recognized as expense as incurred. Amortization expense was $37 million and $74 million for the three and six months ended June 30, 2021, respectively, and $35 million and $71 million for the three and six months ended June 30, 2020, respectively, which includes the impact of any intangible asset impairment charges recorded during the period. Goodwill —Goodwill is the excess of the purchase price over the estimated fair value of identifiable net assets acquired in business combinations. The Company tests goodwill for impairment annually in the fourth quarter, or more frequently when indications of potential impairment exist. The Company monitors the existence of potential impairment indicators throughout the fiscal year. The Company tests for goodwill impairment at the reporting unit level. Our reporting units are the components of operating segments which constitute businesses for which discrete financial information is available and is regularly reviewed by segment management. The impairment test involves first qualitatively assessing goodwill for impairment. If the qualitative assessment is not met the Company then performs a quantitative assessment by comparing the estimated fair value of each reporting unit to its carrying value, including goodwill. Fair value reflects the price a market participant would be willing to pay in a potential sale of the reporting unit. If the estimated fair value exceeds carrying value, then we conclude that no goodwill impairment has occurred. If the carrying value of the reporting unit exceeds its estimated fair value, the Company recognizes an impairment loss in an amount equal to the excess, not to exceed the amount of goodwill allocated to the reporting unit. The Company qualitatively concluded there were no goodwill impairments during the six months ended June 30, 2021 and 2020. Goodwill was $2,547 million and $2,580 million as of June 30, 2021 and December 31, 2020, respectively. Warranty and product recalls —Expected warranty costs for products sold are recognized at the time of sale of the product based on an estimate of the amount that eventually will be required to settle such obligations. These accruals are based on factors such as past experience, production changes, industry developments and various other considerations. Costs of product recalls, which may include the cost of the product being replaced as well as the customer’s cost of the recall, including labor to remove and replace the recalled part, are accrued as part of our warranty accrual at the time an obligation becomes probable and can be reasonably estimated. These estimates are adjusted from time to time based on facts and circumstances that impact the status of existing claims. Refer to Note 6. Warranty Obligations for additional information. Income taxes —Deferred tax assets and liabilities reflect temporary differences between the amount of assets and liabilities for financial and tax reporting purposes. Such amounts are adjusted, as appropriate, to reflect changes in tax rates expected to be in effect when the temporary differences reverse. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in earnings in the period that includes the enactment date. A valuation allowance is recorded to reduce deferred tax assets to the amount that is more likely than not to be realized. In the event the Company determines it is more likely than not that the deferred tax assets will not be realized in the future, the valuation allowance adjustment to the deferred tax assets will be charged to earnings in the period in which the Company makes such a determination. In determining whether an uncertain tax position exists, the Company determines, based solely on its technical merits, whether the tax position is more likely than not to be sustained upon examination, and if so, a tax benefit is measured on a cumulative probability basis that is more likely than not to be realized upon the ultimate settlement. In determining the provision for income taxes for financial statement purposes, the Company makes certain estimates and judgments which affect its evaluation of the carrying value of its deferred tax assets, as well as its calculation of certain tax liabilities. Refer to Note 11. Income Taxes for additional information. Restructuring —Aptiv continually evaluates alternatives to align the business with the changing needs of its customers and to lower operating costs. This includes the realignment of its existing manufacturing capacity, facility closures, or similar actions, either in the normal course of business or pursuant to significant restructuring programs. These actions may result in employees receiving voluntary or involuntary employee termination benefits, which are mainly pursuant to union or other contractual agreements or statutory requirements. Voluntary termination benefits are accrued when an employee accepts the related offer. Involuntary termination benefits are accrued upon the commitment to a termination plan and when the benefit arrangement is communicated to affected employees, or when liabilities are determined to be probable and estimable, depending on the existence of a substantive plan for severance or termination. Contract termination costs and certain early termination lease costs are recorded when contracts are terminated. All other exit costs are expensed as incurred. Refer to Note 7. Restructuring for additional information. Customer concentrations —As reflected in the table below, net sales to Stellantis N.V. (“Stellantis”), General Motors Company (“GM”) and Volkswagen Group (“VW”), Aptiv’s three largest customers, totaled approximately 29% and 28% of our total net sales for the three and six months ended June 30, 2021, respectively, and 24% and 29% our total net sales for the three and six months ended June 30, 2020, respectively. Percentage of Total Net Sales Accounts Receivable Three Months Ended June 30, Six Months Ended June 30, June 30, December 31, 2021 2020 2021 2020 (in millions) Stellantis (1) 11 % 7 % 11 % 11 % $ 291 $ 352 GM 8 % 5 % 8 % 8 % 204 200 VW 10 % 12 % 9 % 10 % 183 216 (1) On January 16, 2021, Fiat Chrysler Automobiles N.V. (“FCA”) and Peugeot Citroën (“PSA”) merged to form a new, combined company (“Stellantis”). Net sales to FCA and PSA before the date of the merger are included in net sales to Stellantis in the table above for the three and six months ended June 30, 2021 and 2020. As of December 31, 2020, accounts receivable due from FCA and PSA are shown on a combined basis as accounts receivable due from Stellantis. Recently adopted accounting pronouncements —Aptiv adopted Accounting Standards Update (“ASU”) 2020-01, Investments—Equity Securities (Topic 321), Investments—Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815)—Clarifying the Interactions between Topic 321, Topic 323, and Topic 815 in the first quarter of 2021 on a prospective basis. This guidance clarifies the interactions between accounting for equity securities under the measurement alternative in Topic 321 and the equity method of accounting in Topic 323, as well as the accounting for certain forward contracts and purchased options to purchase securities that, upon settlement or exercise, would be accounted for under the equity method of accounting. The adoption of this guidance did not have a significant impact on Aptiv’s financial statements.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2021
Inventory Disclosure [Abstract]
Inventories	INVENTORIES Inventories are stated at the lower of cost, determined on a first-in, first-out basis, or net realizable value, including direct material costs and direct and indirect manufacturing costs. A summary of inventories is shown below: June 30, December 31, (in millions) Productive material $ 1,096 $ 745 Work-in-process 172 111 Finished goods 533 441 Total $ 1,801 $ 1,297

Assets

Assets	6 Months Ended
	Jun. 30, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Assets	ASSETS Other current assets consisted of the following: June 30, December 31, (in millions) Value added tax receivable $ 209 $ 155 Prepaid insurance and other expenses 65 47 Reimbursable engineering costs 181 169 Notes receivable 8 8 Income and other taxes receivable 57 41 Deposits to vendors 7 5 Derivative financial instruments (Note 14) 63 48 Capitalized upfront fees (Note 20) 32 30 Total $ 622 $ 503 Other long-term assets consisted of the following: June 30, December 31, (in millions) Deferred income taxes, net $ 172 $ 174 Unamortized Revolving Credit Facility debt issuance costs 12 11 Income and other taxes receivable 26 25 Reimbursable engineering costs 171 186 Value added tax receivable 37 29 Equity investments (Note 17) 124 113 Derivative financial instruments (Note 14) 13 22 Capitalized upfront fees (Note 20) 66 86 Other 57 48 Total $ 678 $ 694

Liabilities

Liabilities	6 Months Ended
	Jun. 30, 2021
Other Liabilities Disclosure [Abstract]
Liabilities	LIABILITIES Accrued liabilities consisted of the following: June 30, December 31, (in millions) Payroll-related obligations $ 320 $ 293 Employee benefits, including current pension obligations 66 84 Income and other taxes payable 164 177 Warranty obligations (Note 6) 40 51 Restructuring (Note 7) 62 82 Customer deposits 50 62 Derivative financial instruments (Note 14) 4 8 Accrued interest 46 48 MCPS dividends payable 3 3 Operating lease liabilities 99 100 Other 461 477 Total $ 1,315 $ 1,385 Other long-term liabilities consisted of the following: June 30, December 31, (in millions) Environmental (Note 10) $ 4 $ 4 Extended disability benefits 5 5 Warranty obligations (Note 6) 8 8 Restructuring (Note 7) 32 43 Payroll-related obligations 11 11 Accrued income taxes 155 156 Deferred income taxes, net 210 207 Derivative financial instruments (Note 14) 2 1 Other 94 105 Total $ 521 $ 540

Warranty Obligations

Warranty Obligations	6 Months Ended
	Jun. 30, 2021
Product Warranties Disclosures [Abstract]
Warranty Obligations	WARRANTY OBLIGATIONS Expected warranty costs for products sold are recognized principally at the time of sale of the product based on an estimate of the amount that eventually will be required to settle such obligations. These accruals are based on factors such as past experience, production changes, industry developments and various other considerations. The estimated costs related to product recalls based on a formal campaign soliciting return of that product are accrued at the time an obligation becomes probable and can be reasonably estimated. These estimates are adjusted from time to time based on facts and circumstances that impact the status of existing claims. Aptiv has recognized its best estimate for its total aggregate warranty reserves, including product recall costs, across all of its operating segments as of June 30, 2021. The Company estimates the reasonably possible amount to ultimately resolve all matters in excess of the recorded reserves as of June 30, 2021 to be zero to $10 million. The table below summarizes the activity in the product warranty liability for the six months ended June 30, 2021: Warranty Obligations (in millions) Accrual balance at beginning of period $ 59 Provision for estimated warranties incurred during the period 15 Changes in estimate for pre-existing warranties 6 Settlements made during the period (in cash or in kind) (31) Foreign currency translation and other (1) Accrual balance at end of period $ 48

Restructuring

Restructuring	6 Months Ended
	Jun. 30, 2021
Restructuring and Related Activities [Abstract]
Restructuring	RESTRUCTURING Aptiv’s restructuring activities are undertaken as necessary to implement management’s strategy, streamline operations, take advantage of available capacity and resources, and ultimately achieve net cost reductions. These activities generally relate to the realignment of existing manufacturing capacity and closure of facilities and other exit or disposal activities, as it relates to executing Aptiv’s strategy, either in the normal course of business or pursuant to significant restructuring programs. As part of Aptiv’s continued efforts to optimize its cost structure, it has undertaken several restructuring programs which include workforce reductions as well as plant closures. These programs are primarily focused on the continued rotation of our manufacturing footprint to best cost locations in Europe and on reducing global overhead costs. The Company recorded employee-related and other restructuring charges related to these programs totaling approximately $14 million and $20 million during the three and six months ended June 30, 2021, respectively. None of the Company's individual restructuring programs initiated during the three and six months ended June 30, 2021 were material and there have been no changes in previously initiated programs that have resulted (or are expected to result) in a material change to our restructuring costs. The Company expects to incur additional restructuring costs of approximately $20 million (of which approximately $15 million relates to the Signal and Power Solutions segment and approximately $5 million relates to the Advanced Safety and User Experience segment) for programs approved as of June 30, 2021, which are primarily expected to be incurred within the next twenty-four months. During the three and six months ended June 30, 2020, Aptiv recorded employee-related and other restructuring charges totaling approximately $72 million and $100 million, respectively, of which $42 million and $51 million, respectively, was recognized for programs implemented in the North America region and $24 million and $35 million, respectively, was recognized for programs implemented in the European region. The charges recorded during the three months ended June 30, 2020 included the recognition of approximately $60 million of employee-related and other costs related to actions taken as a result of the global impacts of the COVID-19 pandemic. Restructuring charges for employee separation and termination benefits are paid either over the severance period or in a lump sum in accordance with either statutory requirements or individual agreements. Aptiv incurred cash expenditures related to its restructuring programs of approximately $48 million and $87 million in the six months ended June 30, 2021 and 2020, respectively. The following table summarizes the restructuring charges recorded for the three and six months ended June 30, 2021 and 2020 by operating segment: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (in millions) Signal and Power Solutions $ 11 $ 60 $ 9 $ 79 Advanced Safety and User Experience 3 12 11 21 Total $ 14 $ 72 $ 20 $ 100 The table below summarizes the activity in the restructuring liability for the six months ended June 30, 2021: Employee Termination Benefits Liability Other Exit Costs Liability Total (in millions) Accrual balance at January 1, 2021 $ 125 $ — $ 125 Provision for estimated expenses incurred during the period 20 — 20 Payments made during the period (48) — (48) Foreign currency and other (3) — (3) Accrual balance at June 30, 2021 $ 94 $ — $ 94

Debt

Debt	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Debt	DEBT The following is a summary of debt outstanding, net of unamortized issuance costs and discounts, as of June 30, 2021 and December 31, 2020: June 30, December 31, (in millions) 4.15%, senior notes, due 2024 (net of $1 and $1 unamortized issuance costs and $1 and $1 discount, respectively) $ 698 $ 698 1.50%, Euro-denominated senior notes, due 2025 (net of $2 and $2 unamortized issuance costs and $1 and $2 discount, respectively) 832 857 4.25%, senior notes, due 2026 (net of $2 and $2 unamortized issuance costs, respectively) 648 648 1.60%, Euro-denominated senior notes, due 2028 (net of $3 and $3 unamortized issuance costs, respectively) 593 612 4.35%, senior notes, due 2029 (net of $2 and $3 unamortized issuance costs, respectively) 298 297 4.40%, senior notes, due 2046 (net of $3 and $3 unamortized issuance costs and $1 and $1 discount, respectively) 296 296 5.40%, senior notes, due 2049 (net of $4 and $4 unamortized issuance costs and $1 and $1 discount, respectively) 345 345 Tranche A Term Loan, due 2026 (net of $2 and $1 unamortized issuance costs, respectively) 311 320 Finance leases and other 26 28 Total debt 4,047 4,101 Less: current portion (16) (90) Long-term debt $ 4,031 $ 4,011 Credit Agreement Aptiv PLC and its wholly-owned subsidiary Aptiv Corporation entered into a credit agreement (the “Credit Agreement”) with JPMorgan Chase Bank, N.A., as administrative agent (the “Administrative Agent”), under which it maintains senior unsecured credit facilities currently consisting of a term loan (the “Tranche A Term Loan”) and a revolving credit facility of $2 billion (the “Revolving Credit Facility”). During 2020, Aptiv Global Financing Limited (“AGFL”), a wholly-owned Irish subsidiary of Aptiv PLC, executed a joinder agreement to the Credit Agreement, which allows it to act as a borrower under the Credit Agreement, and a guaranty supplement, under which AGFL guarantees the obligations under the Credit Agreement, subject to certain exceptions. The Credit Agreement was originally entered into in March 2011 and has been subsequently amended and restated on several occasions, most recently on June 24, 2021. The June 2021 amendment, among other things, (1) refinanced and replaced the existing term loan A and revolver with a new term loan A that matures in five years, and a new five-year revolving credit facility with aggregate commitments of $2 billion, (2) utilized the Company’s existing sustainability-linked metrics and commitments, that, if achieved, would change the facility fee and interest rate margins as described below, (3) removed prior provisions from the May 2020 amendment that had increased the leverage ratio maintenance covenant from 3.5 to 1.0 to 4.5 to 1.0 until July 1, 2021 and restricted dividends and other payments on equity, and (4) includes a financial maintenance covenant that requires the Company to maintain total net leverage (as calculated in accordance with the Credit Agreement) of less than 3.5 to 1.0 (or 4.0 to 1.0 for four full fiscal quarters following completion of material acquisitions, as defined in the Credit Agreement). Losses on modification of debt totaled $1 million and $4 million during the three months ended June 30, 2021 and 2020, respectively, related to the June 2021 amendment and May 2020 amendment. Aptiv paid amendment fees of $6 million and $18 million during the three months ended June 30, 2021 and 2020, respectively, which are reflected as financing activities in the consolidated statements of cash flows. The Tranche A Term Loan and the Revolving Credit Facility mature on June 24, 2026. Beginning on September 30, 2022, Aptiv is obligated to make quarterly principal payments on the Tranche A Term Loan according to the amortization schedule in the Credit Agreement. The Credit Agreement also contains an accordion feature that permits Aptiv to increase, from time to time, the aggregate borrowing capacity under the Credit Agreement by up to an additional $1 billion upon Aptiv’s request, the agreement of the lenders participating in the increase, and the approval of the Administrative Agent. As of June 30, 2021, Aptiv had no amounts outstanding under the Revolving Credit Facility and less than $1 million in letters of credit were issued under the Credit Agreement. Letters of credit issued under the Credit Agreement reduce availability under the Revolving Credit Facility. Loans under the Credit Agreement bear interest, at Aptiv’s option, at either (a) the Administrative Agent’s Alternate Base Rate (“ABR” as defined in the Credit Agreement) or (b) the London Interbank Offered Rate (the “Adjusted LIBO Rate” as defined in the Credit Agreement) (“LIBOR”) plus in either case a percentage per annum as set forth in the table below (the “Applicable Rate”). The June 2021 amendment also contains provisions to facilitate the replacement of the LIBOR-based rate with a Secured Overnight Financing Rate (“SOFR”) based rate upon the discontinuation or unavailability of LIBOR. The Applicable Rates under the Credit Agreement on the specified dates are set forth below: June 30, 2021 December 31, 2020 LIBOR plus ABR plus LIBOR plus ABR plus Revolving Credit Facility (1) 1.10 % 0.10 % 1.10 % 0.10 % Revolving Credit Facility (2) N/A N/A 1.40 % 0.40 % Tranche A Term Loan (1) 1.125 % 0.125 % 1.25 % 0.25 % Tranche A Term Loan (2) N/A N/A 1.75 % 0.75 % (1) Rates as of June 30, 2021 are applicable to balances under the Credit Agreement as amended and restated on June 24, 2021 as described above. Rates as of December 31, 2020 are applicable to principal balances under the Credit Agreement which were not extended as part of the May 2020 amendment. (2) Rates as of December 31, 2020 are applicable to principal balances under the Credit Agreement which were extended as part of the May 2020 amendment. Under the June 2021 amendment, the Applicable Rate under the Credit Agreement, as well as the facility fee, may increase or decrease from time to time based on changes in the Company’s credit ratings and whether the Company achieves or fails to achieve certain sustainability-linked targets with respect to greenhouse gas emissions and workplace safety. Such adjustments may be up to 0.04% per annum on interest rate margins on the Revolving Credit Facility, 0.02% per annum on interest rate margins on the Tranche A Term Loan and up to 0.01% per annum on the facility fee. Accordingly, the interest rate is subject to fluctuation during the term of the Credit Agreement based on changes in the ABR, LIBOR, changes in the Company’s corporate credit ratings or whether the Company achieves or fails to achieve its sustainability-linked targets. The Credit Agreement also requires that Aptiv pay certain facility fees on the Revolving Credit Facility, which are also subject to adjustment based on the sustainability-linked targets as described above, and certain letter of credit issuance and fronting fees. The interest rate period with respect to LIBOR interest rate options can be set at one-, three-, or six-months as selected by Aptiv in accordance with the terms of the Credit Agreement (or other period as may be agreed by the applicable lenders). Aptiv may elect to change the selected interest rate option in accordance with the provisions of the Credit Agreement. As of June 30, 2021, Aptiv selected the one-month LIBOR interest rate option on the Tranche A Term Loan, and the rates effective as of June 30, 2021, as detailed in the table below, were based on the Company’s current credit rating and the Applicable Rate for the Credit Agreement: Borrowings as of June 30, 2021 Rates effective as of Applicable Rate (in millions) June 30, 2021 Tranche A Term Loan LIBOR plus 1.125% $ 313 1.25 % Borrowings under the Credit Agreement are prepayable at Aptiv’s option without premium or penalty. The Credit Agreement contains certain covenants that limit, among other things, the Company’s (and the Company’s subsidiaries’) ability to incur certain additional indebtedness or liens or to dispose of substantially all of its assets. In addition, under the June 2021 amendment, the Credit Agreement requires that the Company maintain a consolidated leverage ratio (the ratio of Consolidated Total Indebtedness to Consolidated EBITDA, each as defined in the Credit Agreement) of not more than 3.5 to 1.0 (or 4.0 to 1.0 for four full fiscal quarters following completion of material acquisitions, as defined in the Credit Agreement). The Credit Agreement also contains events of default customary for financings of this type. The Company was in compliance with the Credit Agreement covenants as of June 30, 2021. As of June 30, 2021, all obligations under the Credit Agreement were borrowed by Aptiv Corporation and jointly and severally guaranteed by its direct and indirect parent companies, subject to certain exceptions set forth in the Credit Agreement. Senior Unsecured Notes On March 3, 2014, Aptiv Corporation issued $700 million in aggregate principal amount of 4.15% senior unsecured notes due 2024 (the “2014 Senior Notes”) in a transaction registered under the Securities Act of 1933, as amended (the “Securities Act”). The 2014 Senior Notes were priced at 99.649% of par, resulting in a yield to maturity of 4.193%. The proceeds were primarily utilized to redeem $500 million of 5.875% senior unsecured notes due 2019 and to repay a portion of the Tranche A Term Loan. Aptiv paid approximately $6 million of issuance costs in connection with the 2014 Senior Notes. Interest is payable semi-annually on March 15 and September 15 of each year to holders of record at the close of business on March 1 or September 1 immediately preceding the interest payment date. On March 10, 2015, Aptiv PLC issued €700 million in aggregate principal amount of 1.50% Euro-denominated senior unsecured notes due 2025 (the “2015 Euro-denominated Senior Notes”) in a transaction registered under the Securities Act. The 2015 Euro-denominated Senior Notes were priced at 99.54% of par, resulting in a yield to maturity of 1.55%. The proceeds were primarily utilized to redeem $500 million of 6.125% senior unsecured notes due 2021, and to fund growth initiatives, such as acquisitions, and share repurchases. Aptiv incurred approximately $5 million of issuance costs in connection with the 2015 Euro-denominated Senior Notes. Interest is payable annually on March 10. The Company has designated the 2015 Euro-denominated Senior Notes as a net investment hedge of the foreign currency exposure of its investments in certain Euro-denominated wholly-owned subsidiaries. Refer to Note 14. Derivatives and Hedging Activities for further information. On November 19, 2015, Aptiv PLC issued $1.3 billion in aggregate principal amount of senior unsecured notes in a transaction registered under the Securities Act, comprised of $650 million of 3.15% senior unsecured notes due 2020 (the “3.15% Senior Notes”) and $650 million of 4.25% senior unsecured notes due 2026 (the “4.25% Senior Notes”) (collectively, the “2015 Senior Notes”). The 3.15% Senior Notes were priced at 99.784% of par, resulting in a yield to maturity of 3.197%, and the 4.25% Senior Notes were priced at 99.942% of par, resulting in a yield to maturity of 4.256%. The proceeds were primarily utilized to fund a portion of the cash consideration for the acquisition of HellermannTyton PLC and for general corporate purposes, including the payment of fees and expenses associated with the HellermannTyton PLC acquisition and the related financing transaction. Aptiv incurred approximately $8 million of issuance costs in connection with the 2015 Senior Notes. Interest on the 3.15% Senior Notes was payable semi-annually on May 19 and November 19 of each year to holders of record at the close of business on May 4 or November 4 immediately preceding the interest payment date. Interest on the 4.25% Senior Notes is payable semi-annually on January 15 and July 15 of each year to holders of record at the close of business on January 1 or July 1 immediately preceding the interest payment date. In March 2019, Aptiv redeemed for cash the entire $650 million aggregate principal amount outstanding of the 3.15% Senior Notes, financed by the proceeds received from the issuance of the 2019 Senior Notes, as defined below. On September 15, 2016, Aptiv PLC issued €500 million in aggregate principal amount of 1.60% Euro-denominated senior unsecured notes due 2028 (the “2016 Euro-denominated Senior Notes”) in a transaction registered under the Securities Act. The 2016 Euro-denominated Senior Notes were priced at 99.881% of par, resulting in a yield to maturity of 1.611%. The proceeds, together with proceeds from the 2016 Senior Notes described below, were utilized to redeem the $800 million of 5.00% senior unsecured notes due 2023. Aptiv incurred approximately $4 million of issuance costs in connection with the 2016 Euro-denominated Senior Notes. Interest is payable annually on September 15. The Company has designated the 2016 Euro-denominated Senior Notes as a net investment hedge of the foreign currency exposure of its investments in certain Euro-denominated wholly-owned subsidiaries. Refer to Note 14. Derivatives and Hedging Activities for further information. On September 20, 2016, Aptiv PLC issued $300 million in aggregate principal amount of 4.40% senior unsecured notes due 2046 (the “2016 Senior Notes”) in a transaction registered under the Securities Act. The 2016 Senior Notes were priced at 99.454% of par, resulting in a yield to maturity of 4.433%. The proceeds, together with proceeds from the 2016 Euro-denominated Senior Notes, were utilized to redeem the $800 million of 5.00% senior unsecured notes due 2023. Aptiv incurred approximately $3 million of issuance costs in connection with the 2016 Senior Notes. Interest is payable semi-annually on April 1 and October 1 of each year to holders of record at the close of business on March 15 or September 15 immediately preceding the interest payment date. On March 14, 2019, Aptiv PLC issued $650 million in aggregate principal amount of senior unsecured notes in a transaction registered under the Securities Act, comprised of $300 million of 4.35% senior unsecured notes due 2029 (the “4.35% Senior Notes”) and $350 million of 5.40% senior unsecured notes due 2049 (the “5.40% Senior Notes”) (collectively, the “2019 Senior Notes”). The 4.35% Senior Notes were priced at 99.879% of par, resulting in a yield to maturity of 4.365%, and the 5.40% Senior Notes were priced at 99.558% of par, resulting in a yield to maturity of 5.430%. The proceeds were utilized to redeem the 3.15% Senior Notes. Aptiv incurred approximately $7 million of issuance costs in connection with the 2019 Senior Notes. Interest on the 2019 Senior Notes is payable semi-annually on March 15 and September 15 of each year to holders of record at the close of business on March 1 or September 1 immediately preceding the interest payment date. Although the specific terms of each indenture governing each series of senior notes vary, the indentures contain certain restrictive covenants, including with respect to Aptiv’s (and Aptiv’s subsidiaries) ability to incur liens, enter into sale and leaseback transactions and merge with or into other entities. As of June 30, 2021, the Company was in compliance with the provisions of all series of the outstanding senior notes. The 2014 Senior Notes issued by Aptiv Corporation are fully and unconditionally guaranteed, jointly and severally, by Aptiv PLC and by certain of Aptiv PLC’s direct and indirect subsidiaries, which are directly or indirectly 100% owned by Aptiv PLC, subject to customary release provisions (other than in the case of Aptiv PLC). The 2015 Euro-denominated Senior Notes, 4.25% Senior Notes, 2016 Euro-denominated Senior Notes, 2016 Senior Notes and 2019 Senior Notes issued by Aptiv PLC are fully and unconditionally guaranteed, jointly and severally, by certain of Aptiv PLC’s direct and indirect subsidiaries (including Aptiv Corporation), which are directly or indirectly 100% owned by Aptiv PLC, subject to customary release provisions. Other Financing Receivable factoring —Aptiv maintains a €450 million European accounts receivable factoring facility that is available on a committed basis and allows for factoring of receivables denominated in both Euros and U.S. dollars (“USD”). This facility became effective on January 1, 2021 and replaced Aptiv’s previous €300 million European accounts receivable factoring facility. This facility is accounted for as short-term debt and borrowings are subject to the availability of eligible accounts receivable. Collateral is not required related to these trade accounts receivable. The program is for a term of three years, subject to Aptiv’s right to terminate at any time with three months’ notice. After expiration of the three year term, either party can terminate with three months’ notice. Borrowings denominated in Euros under the facility bear interest at the three-month Euro Interbank Offered Rate (“EURIBOR”) plus 0.50% and USD borrowings bear interest at two-month LIBOR plus 0.50%, with borrowings under either denomination carrying a minimum interest rate of 0.20%. As of June 30, 2021, Aptiv had no amounts drawn on the new European accounts receivable factoring facility and as of December 31, 2020, Aptiv had no amounts outstanding on the previous European accounts receivable factoring facility. Finance leases and other —As of June 30, 2021 and December 31, 2020, approximately $26 million and $28 million, respectively, of other debt primarily issued by certain non-U.S. subsidiaries and finance lease obligations were outstanding. Interest —Cash paid for interest related to debt outstanding totaled $75 million and $84 million for the six months ended June 30, 2021 and 2020, respectively. Letter of credit facilities —In addition to the letters of credit issued under the Credit Agreement, Aptiv had approximately $3 million and $2 million outstanding through other letter of credit facilities as of June 30, 2021 and December 31, 2020, respectively, primarily to support arrangements and other obligations at certain of its subsidiaries.

Pension Benefits

Pension Benefits	6 Months Ended
	Jun. 30, 2021
Retirement Benefits [Abstract]
Pension Benefits	PENSION BENEFITSCertain of Aptiv’s non-U.S. subsidiaries sponsor defined benefit pension plans, which generally provide benefits based on negotiated amounts for each year of service. Aptiv’s primary non-U.S. plans are located in France, Germany, Mexico, Portugal and the U.K. The U.K. and certain Mexican plans are funded. In addition, Aptiv has defined benefit plans in South Korea, Turkey and Italy for which amounts are payable to employees immediately upon separation. The obligations for these plans are recorded over the requisite service period. Aptiv sponsors a Supplemental Executive Retirement Program (“SERP”) for those employees who were U.S. executives of the former Delphi Corporation prior to September 30, 2008 and were still U.S. executives of the Company on October 7, 2009, the effective date of the program. This program is unfunded. Executives receive benefits over 5 years after an involuntary or voluntary separation from Aptiv. The SERP is closed to new members. The amounts shown below reflect the defined benefit pension expense for the three and six months ended June 30, 2021 and 2020: Non-U.S. Plans U.S. Plans Three Months Ended June 30, 2021 2020 2021 2020 (in millions) Service cost $ 5 $ 5 $ — $ — Interest cost 5 5 — — Expected return on plan assets (5) (4) — — Curtailment loss 5 — — — Amortization of actuarial losses 3 3 1 1 Net periodic benefit cost $ 13 $ 9 $ 1 $ 1 Non-U.S. Plans U.S. Plans Six Months Ended June 30, 2021 2020 2021 2020 (in millions) Service cost $ 10 $ 10 $ — $ — Interest cost 10 11 — — Expected return on plan assets (10) (9) — — Curtailment loss 5 — — — Amortization of actuarial losses 8 7 1 1 Net periodic benefit cost $ 23 $ 19 $ 1 $ 1 Other postretirement benefit obligations were approximately $1 million and $1 million at June 30, 2021 and December 31, 2020, respectively.

Commitments And Contingencies

Commitments And Contingencies	6 Months Ended
	Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies	COMMITMENTS AND CONTINGENCIES Ordinary Business Litigation Aptiv is from time to time subject to various legal actions and claims incidental to its business, including those arising out of alleged defects, alleged breaches of contracts, product warranties, intellectual property matters, and employment-related matters. It is the opinion of Aptiv that the outcome of such matters will not have a material adverse impact on the consolidated financial position, results of operations, or cash flows of Aptiv. With respect to warranty matters, although Aptiv cannot ensure that the future costs of warranty claims by customers will not be material, Aptiv believes its established reserves are adequate to cover potential warranty settlements. Matters Related to Global Supply Chain Disruptions Due to various factors, there are currently global supply chain disruptions, including a worldwide semiconductor supply shortage. The semiconductor supply shortage, due in part to increased demand across multiple industries, is impacting production in automotive and other industries. We anticipate these supply chain disruptions will persist throughout much of the remainder of 2021. We, along with most automotive component supply companies that use semiconductors, have been unable to fully meet the vehicle production demands of OEMs because of events which are outside our control, including but not limited to, the COVID-19 pandemic, the global semiconductor shortage, fires in our suppliers’ facilities, unprecedented weather events in the southwestern United States, and other extraordinary events. Although we are working closely with suppliers and customers to minimize any potential adverse impacts of these events, some of our customers have indicated that they expect us to bear at least some responsibility for their lost production and other costs. While no assurances can be made as to the ultimate outcome of these customer expectations or any other future claims, we do not currently believe a loss is probable, and accordingly, no reserve has been made as of June 30, 2021. We will continue to actively monitor all direct and indirect potential impacts of these supply chain disruptions, and will seek to aggressively mitigate and minimize their impact on our business. Brazil Matters Aptiv conducts business operations in Brazil that are subject to the Brazilian federal labor, social security, environmental, tax and customs laws, as well as a variety of state and local laws. While Aptiv believes it complies with such laws, they are complex, subject to varying interpretations, and the Company is often engaged in litigation with government agencies regarding the application of these laws to particular circumstances. As of June 30, 2021, the majority of claims asserted against Aptiv in Brazil relate to such litigation. The remaining claims in Brazil relate to commercial and labor litigation with private parties. As of June 30, 2021, claims totaling approximately $110 million (using June 30, 2021 foreign currency rates) have been asserted against Aptiv in Brazil. As of June 30, 2021, the Company maintains accruals for these asserted claims of $20 million (using June 30, 2021 foreign currency rates). The amounts accrued represent claims that are deemed probable of loss and are reasonably estimable based on the Company’s analyses and assessment of the asserted claims and prior experience with similar matters. While the Company believes its accruals are adequate, the final amounts required to resolve these matters could differ materially from the Company’s recorded estimates and Aptiv’s results of operations could be materially affected. The Company estimates the reasonably possible loss in excess of the amounts accrued related to these claims to be zero to $90 million. Environmental Matters Aptiv is subject to the requirements of U.S. federal, state, local and non-U.S. environmental and safety and health laws and regulations. As of June 30, 2021 and December 31, 2020, the undiscounted reserve for environmental investigation and remediation recorded in other long-term liabilities was approximately $4 million and $4 million, respectively. Aptiv cannot ensure that environmental requirements will not change or become more stringent over time or that its eventual environmental remediation costs and liabilities will not exceed the amount of its current reserves. In the event that such liabilities were to significantly exceed the amounts recorded, Aptiv’s results of operations could be materially affected. At June 30, 2021, the difference between the recorded liabilities and the reasonably possible range of potential loss was not material.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES At the end of each interim period, the Company makes its best estimate of the annual expected effective income tax rate and applies that rate to its ordinary year-to-date earnings or loss. The income tax provision or benefit related to unusual or infrequent items, if applicable, that will be separately reported or reported net of their related tax effects are individually computed and recognized in the interim period in which those items occur. In addition, the effect of changes in enacted tax laws or rates, tax status, judgment on the realizability of a beginning-of-the-year deferred tax asset in future years or income tax contingencies is recognized in the interim period in which the change occurs. The computation of the annual expected effective income tax rate at each interim period requires certain estimates and assumptions including, but not limited to, the expected pre-tax income (or loss) for the year, projections of the proportion of income (and/or loss) earned and taxed in respective jurisdictions, permanent and temporary differences, and the likelihood of the realizability of deferred tax assets generated in the current year. The ongoing volatile global economic conditions resulting from the COVID-19 pandemic, the future direct and indirect impacts of which are difficult to predict, may cause fluctuations in our expected pre-tax income (or loss) for the year, which could create volatility in our annual expected effective income tax rate. Jurisdictions with a projected loss for the year or a year-to-date loss for which no tax benefit or expense can be recognized due to a valuation allowance are excluded from the estimated annual effective tax rate. The impact of such an exclusion could result in a higher or lower effective tax rate during a particular quarter, based upon the composition and timing of actual earnings compared to annual projections. The estimates used to compute the provision or benefit for income taxes may change as new events occur, additional information is obtained or as our tax environment changes. To the extent that the expected annual effective income tax rate changes, the effect of the change on prior interim periods is included in the income tax provision in the period in which the change in estimate occurs. The Company’s income tax expense (benefit) and effective tax rate for the three and six months ended June 30, 2021 and 2020 were as follows: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (dollars in millions) Income tax expense (benefit) $ 28 $ (14) $ 76 $ (4) Effective tax rate 11 % 4 % 12 % 0 % The Company’s tax rate is affected by the fact that its parent entity is an Irish resident taxpayer, the tax rates in Ireland and other jurisdictions in which the Company operates, the relative amount of income earned by jurisdiction and the relative amount of losses or income for which no tax benefit or expense was recognized due to a valuation allowance. Due to the COVID-19 pandemic, losses for which no tax benefit was recognized were higher in the three and six months ended June 30, 2020 as compared to the same periods in the current year. The Company’s effective tax rate is also impacted by the receipt of certain tax incentives and holidays that reduce the effective tax rate for certain subsidiaries below the statutory rate. The Company’s effective tax rate for the three and six months ended June 30, 2021 also includes net discrete tax benefits of $3 million and $4 million, respectively, primarily related to changes in accruals for unremitted earnings, provision to return adjustments, changes in reserves and the impact of a tax rate change. The effective tax rate for the three and six months ended June 30, 2020 includes net discrete tax benefits of $3 million and $6 million, respectively, primarily related to changes in reserves, changes in accruals for unremitted earnings and provision to return adjustments. Also included as a discrete item in the effective tax rate for the six months ended June 30, 2020 is the beneficial impact from the gain on the autonomous driving joint venture. The tax expense associated with the gain was insignificant as Aptiv’s aggregate autonomous driving assets were exempt from capital gains tax in the jurisdiction from which they were sold. The aggregate autonomous driving assets had been acquired, purchased or developed in taxable transactions in prior periods and reflect changes made to the corporate entity operating structure for intellectual property following the Separation of its former Powertrain Systems segment. Aptiv PLC is an Irish resident taxpayer and not a domestic corporation for U.S. federal income tax purposes. As such, it is not subject to U.S. tax on remitted foreign earnings and, as a result of its capital structure, is also generally not subject to Irish tax on the repatriation of foreign earnings. Cash paid or withheld for income taxes was $93 million and $54 million for the six months ended June 30, 2021 and 2020, respectively.

Shareholders' Equity And Net In

Shareholders' Equity And Net Income Per Share	6 Months Ended
	Jun. 30, 2021
Shareholders' Equity and Net Income Per Share Note [Abstract]
Shareholders' Equity And Net Income Per Share	SHAREHOLDERS’ EQUITY AND NET INCOME PER SHARE 2020 Public Equity Offering In June 2020, the Company completed the underwritten public offering of approximately 15.1 million ordinary shares at a price of $75.91 per share (the “Ordinary Share Offering”), resulting in net proceeds of approximately $1,115 million, after deducting expenses and the underwriters’ discount of $35 million. Simultaneously, the Company completed the underwritten public offering of 11.5 million 5.50% Mandatory Convertible Preferred Shares, Series A, $0.01 par value per share (the “MCPS”) with a liquidation preference of $100 per share (the “MCPS Offering”), resulting in net proceeds of approximately $1,115 million, after deducting expenses and the underwriters’ discount of $35 million. Each share of MCPS will mandatorily convert on the mandatory conversion date of June 15, 2023, into between 1.0754 and 1.3173 shares of the Company’s ordinary shares, subject to customary anti-dilution adjustments, and further adjustment if there are any accumulated and unpaid MCPS dividends at the conversion date. The number of the Company’s ordinary shares issuable upon conversion will be determined based on the volume-weighted average price per share of the Company’s ordinary shares over the 20 consecutive trading day period beginning on, and including the 21st scheduled trading day immediately before June 15, 2023. Subject to certain exceptions, at any time prior to June 15, 2023, holders of the MCPS may elect to convert each share into 1.0754 ordinary shares, subject to further anti-dilution adjustments. In the event of a fundamental change, the MCPS will convert at the fundamental change rates specified in the statement of rights, and the holders of the MCPS would be entitled to a fundamental change make-whole dividend. Holders of the MCPS will be entitled to receive, when and if declared by the Company’s Board of Directors, cumulative dividends at the annual rate of 5.50% of the liquidation preference of $100 per share (equivalent to $5.50 annually per share), payable in cash or, subject to certain limitations, by delivery of the Company’s ordinary shares or any combination of cash and the Company’s ordinary shares, at the Company’s election. If declared, dividends on the MCPS will be payable quarterly on March 15, June 15, September 15 and December 15 of each year (commencing on September 15, 2020 to, and including June 15, 2023), to the holders of record of the MCPS as they appear on the Company’s share register at the close of business on the immediately preceding March 1, June 1, September 1 or December 1, respectively. Net Income (Loss) Per Share Basic net income (loss) per share is computed by dividing net income (loss) attributable to ordinary shareholders by the weighted average number of ordinary shares outstanding during the period. Diluted net income (loss) per share reflects the weighted average dilutive impact of all potentially dilutive securities from the date of issuance and is computed using the treasury stock and if-converted methods. The if-converted method is used to determine if the impact of the conversion of the MCPS into ordinary shares is more dilutive than the MCPS dividends to net income (loss) per share. If so, the MCPS are assumed to have been converted at the later of the beginning of the period or the time of issuance, and the resulting ordinary shares are included in the denominator and the MCPS dividends are added back to the numerator. Unless otherwise noted, share and per share amounts included in these notes are on a diluted basis. For the three and six months ended June 30, 2021, the impact of the MCPS calculated under the if-converted method was anti-dilutive, and as such 12.37 million and 12.37 million ordinary shares underlying the MCPS, respectively, were excluded from the diluted net income per share calculation. For the three months ended June 30, 2020, the impact of the MCPS calculated under the if-converted method was anti-dilutive, and as such 3.14 million ordinary shares underlying the MCPS were excluded from the diluted net loss per share calculation. For the six months ended June 30, 2020, the calculation of net income per share includes the dilutive impacts of the MCPS under the if-converted method. For all periods presented, the calculation of net income (loss) per share also contemplates the dilutive impacts, if any, of the Company’s share-based compensation plans. Refer to Note 18. Share-Based Compensation for additional information. Weighted Average Shares The following table illustrates net income (loss) per share attributable to ordinary shareholders and the weighted average shares outstanding used in calculating basic and diluted income (loss) per share: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (in millions, except per share data) Numerator, basic: Net income (loss) attributable to ordinary shareholders $ 147 $ (369) $ 426 $ 1,203 Numerator, diluted: Net income (loss) attributable to Aptiv $ 163 $ (366) $ 458 $ 1,206 MCPS dividends (1) (16) (3) (32) — Numerator, diluted $ 147 $ (369) $ 426 $ 1,206 Denominator: Weighted average ordinary shares outstanding, basic 270.49 258.03 270.40 256.77 Dilutive shares related to restricted stock units (“RSUs”) 0.57 0.18 0.70 0.25 Weighted average MCPS Converted Shares (1) — — — 1.57 Weighted average ordinary shares outstanding, including dilutive shares 271.06 258.21 271.10 258.59 Net income (loss) per share attributable to ordinary shareholders: Basic $ 0.54 $ (1.43) $ 1.58 $ 4.69 Diluted $ 0.54 $ (1.43) $ 1.57 $ 4.66 (1) For purposes of calculating net income (loss) per share under the if-converted method, the Company has included the impact of the MCPS dividends for the three and six months ended June 30, 2021, as well as for the three months ended June 30, 2020 as the impact was more dilutive to net income (loss) per share than the impact of assuming the conversion of the MCPS into ordinary shares on a weighted average basis. The Company has excluded the impact of the MCPS dividends for the six months ended June 30, 2020, as the assumed conversion of the MCPS into ordinary shares on a weighted average basis was more dilutive than the impact of the MCPS dividends. Share Repurchase Programs In April 2016, the Board of Directors authorized a share repurchase program of up to $1.5 billion of ordinary shares, which commenced in September 2016. This share repurchase program provides for share purchases in the open market or in privately negotiated transactions, depending on share price, market conditions and other factors, as determined by the Company. There were no shares repurchased during the three and six months ended June 30, 2021 as well as for the three months ended June 30, 2020. A summary of the ordinary shares repurchased during the six months ended June 30, 2020 is as follows: Total number of shares repurchased 1,059,075 Average price paid per share $ 53.73 Total (in millions) $ 57 As of June 30, 2021, approximately $13 million of share repurchases remained available under the April 2016 share repurchase program, which is in addition to the share repurchase program of up to $2.0 billion that was previously announced in January 2019. This program, which will commence following the completion of the April 2016 share repurchase program, provides for share purchases in the open market or in privately negotiated transactions, depending on share price, market conditions and other factors, as determined by the Company. All repurchased shares were retired, and are reflected as a reduction of ordinary share capital for the par value of the shares, with the excess applied as reductions to additional paid-in-capital and retained earnings. Dividends The Company has declared and paid cash dividends per ordinary and preferred share during the periods presented as follows: Ordinary Shares Preferred Shares Dividend Amount Dividend Amount Per Share (in millions) Per Share (in millions) 2021: Second quarter $ — $ — $ 1.38 $ 16 First quarter — — 1.38 16 Total $ — $ — $ 2.76 $ 32 2020: Fourth quarter $ — $ — $ 1.38 $ 16 Third quarter — — 1.42 16 Second quarter — — — — First quarter 0.22 56 — — Total $ 0.22 $ 56 $ 2.80 $ 32

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Income	6 Months Ended
	Jun. 30, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Changes in Accumulated Other Comprehensive Income	CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) The changes in accumulated other comprehensive income (loss) attributable to Aptiv (net of tax) for the three and six months ended June 30, 2021 and 2020 are shown below: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (in millions) Foreign currency translation adjustments: Balance at beginning of period $ (536) $ (723) $ (445) $ (597) Aggregate adjustment for the period (1) 42 18 (49) (108) Balance at end of period (494) (705) (494) (705) Gains (losses) on derivatives: Balance at beginning of period 33 (140) 40 13 Other comprehensive income (loss) before reclassifications (nil net tax effect for all periods presented) 25 54 37 (95) Reclassification to income (nil net tax effect for all periods presented) (20) 22 (39) 18 Balance at end of period 38 (64) 38 (64) Pension and postretirement plans: Balance at beginning of period (133) (128) (140) (135) Other comprehensive income before reclassifications (net tax expense (benefit) of $1, $0, ($1) and ($1)) 15 — 18 4 Reclassification to income (net tax benefit of $1, $1, $2 and $2) 8 3 12 6 Balance at end of period (110) (125) (110) (125) Accumulated other comprehensive loss, end of period $ (566) $ (894) $ (566) $ (894) (1) Includes losses of $19 million and gains $44 million for the three and six months ended June 30, 2021, respectively, and losses of $8 million and $2 million for the three and six months ended June 30, 2020, respectively, related to non-derivative net investment hedges. Refer to Note 14. Derivatives and Hedging Activities for further description of these hedges. Reclassifications from accumulated other comprehensive income (loss) to income for the three and six months ended June 30, 2021 and 2020 were as follows: Reclassification Out of Accumulated Other Comprehensive Income (Loss) Details About Accumulated Other Comprehensive Income Components Three Months Ended June 30, Six Months Ended June 30, Affected Line Item in the Statements of Operations 2021 2020 2021 2020 (in millions) Gains (losses) on derivatives: Commodity derivatives $ 20 $ (8) $ 39 $ (11) Cost of sales Foreign currency derivatives — (14) — (7) Cost of sales 20 (22) 39 (18) Income (loss) before income taxes — — — — Income tax (expense) benefit 20 (22) 39 (18) Net income (loss) — — — — Net income attributable to noncontrolling interest $ 20 $ (22) $ 39 $ (18) Net income (loss) attributable to Aptiv Pension and postretirement plans: Actuarial losses $ (4) $ (4) $ (9) $ (8) Other (expense) income, net (1) Curtailment loss (5) — (5) — Other (expense) income, net (1) (9) (4) (14) (8) Income (loss) before income taxes 1 1 2 2 Income tax (expense) benefit (8) (3) (12) (6) Net income (loss) — — — — Net income attributable to noncontrolling interest $ (8) $ (3) $ (12) $ (6) Net income (loss) attributable to Aptiv Total reclassifications for the period $ 12 $ (25) $ 27 $ (24) (1) These accumulated other comprehensive loss components are included in the computation of net periodic pension cost (see Note 9. Pension Benefits for additional details).

Derivatives And Hedging Activit

Derivatives And Hedging Activities	6 Months Ended
	Jun. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	DERIVATIVES AND HEDGING ACTIVITIES Cash Flow Hedges Aptiv is exposed to market risk, such as fluctuations in foreign currency exchange rates, commodity prices and changes in interest rates, which may result in cash flow risks. To manage the volatility relating to these exposures, Aptiv aggregates the exposures on a consolidated basis to take advantage of natural offsets. For exposures that are not offset within its operations, Aptiv enters into various derivative transactions pursuant to its risk management policies, which prohibit holding or issuing derivative financial instruments for speculative purposes, and designation of derivative instruments is performed on a transaction basis to support hedge accounting. The changes in fair value of these hedging instruments are offset in part or in whole by corresponding changes in the fair value or cash flows of the underlying exposures being hedged. Aptiv assesses the initial and ongoing effectiveness of its hedging relationships in accordance with its documented policy. As of June 30, 2021, the Company had the following outstanding notional amounts related to commodity and foreign currency forward and option contracts designated as cash flow hedges that were entered into to hedge forecasted exposures: Commodity Quantity Hedged Unit of Measure Notional Amount (in thousands) (in millions) Copper 74,033 pounds $ 325 Foreign Currency Quantity Hedged Unit of Measure Notional Amount (in millions) Mexican Peso 14,868 MXN $ 750 Chinese Yuan Renminbi 2,458 RMB 380 Euro 187 EUR 225 Polish Zloty 542 PLN 145 Hungarian Forint 9,743 HUF 35 As of June 30, 2021, Aptiv has entered into derivative instruments to hedge cash flows extending out to June 2023. Gains and losses on derivatives qualifying as cash flow hedges are recorded in accumulated OCI, to the extent that hedges are effective, until the underlying transactions are recognized in earnings. Unrealized amounts in accumulated OCI will fluctuate based on changes in the fair value of hedge derivative contracts at each reporting period. Net gains on cash flow hedges included in accumulated OCI as of June 30, 2021 were $68 million (approximately $68 million, net of tax). Of this total, approximately $58 million of gains are expected to be included in cost of sales within the next 12 months and approximately $10 million of gains are expected to be included in cost of sales in subsequent periods. Cash flow hedges are discontinued when Aptiv determines it is no longer probable that the originally forecasted transactions will occur. Cash flows from derivatives used to manage commodity and foreign exchange risks designated as cash flow hedges are classified as operating activities within the consolidated statements of cash flows. Net Investment Hedges The Company is also exposed to the risk that adverse changes in foreign currency exchange rates could impact its net investment in non-U.S. subsidiaries. To manage this risk, the Company designates certain qualifying derivative and non-derivative instruments, including foreign currency forward contracts and foreign currency-denominated debt, as net investment hedges of certain non-U.S. subsidiaries. The gains or losses on instruments designated as net investment hedges are recognized within OCI to offset changes in the value of the net investment in these foreign currency-denominated operations. Gains and losses reported in accumulated OCI are reclassified to earnings only when the related currency translation adjustments are required to be reclassified, usually upon sale or liquidation of the investment. Cash flows from derivatives designated as net investment hedges are classified as investing activities within the consolidated statements of cash flows. The Company has entered into a series of forward contracts, each of which were designated as net investment hedges of the foreign currency exposure of the Company’s investments in certain Chinese Yuan Renminbi (“RMB”)-denominated subsidiaries. During the six months ended June 30, 2021 and 2020, the Company paid $9 million and received $1 million, respectively, at settlement related to this series of forward contracts which matured during the period. In June 2021, the Company entered into forward contracts with a total notional amount of 2.6 billion RMB (approximately $410 million, using June 30, 2021 foreign currency rates), which matures in September 2021. Refer to the tables below for details of the fair value recorded in the consolidated balance sheets and the effects recorded in the consolidated statements of operations and consolidated statements of comprehensive income related to these derivative instruments. The Company has designated the €700 million 2015 Euro-denominated Senior Notes and the €500 million 2016 Euro-denominated Senior Notes, as more fully described in Note 8. Debt, as net investment hedges of the foreign currency exposure of its investments in certain Euro-denominated subsidiaries. Due to changes in the value of the Euro-denominated debt instruments designated as net investment hedges, during the three and six months ended June 30, 2021, $19 million of losses and $44 million of gains, respectively, were recognized within the cumulative translation adjustment component of OCI. During the three and six months ended June 30, 2020, $8 million and $2 million of losses, respectively, were recognized within the cumulative translation adjustment component of OCI. Included in accumulated OCI related to these net investment hedges were cumulative losses of $109 million and $153 million as of June 30, 2021 and December 31, 2020, respectively. Derivatives Not Designated as Hedges In certain occasions the Company enters into certain foreign currency and commodity contracts that are not designated as hedges. When hedge accounting is not applied to derivative contracts, gains and losses are recorded to other income (expense), net and cost of sales in the consolidated statements of operations. Fair Value of Derivative Instruments in the Balance Sheet The fair value of derivative financial instruments recorded in the consolidated balance sheets as of June 30, 2021 and December 31, 2020 are as follows: Asset Derivatives Liability Derivatives Net Amounts of Assets and (Liabilities) Presented in the Balance Sheet Balance Sheet Location June 30, Balance Sheet Location June 30, June 30, (in millions) Derivatives designated as cash flow hedges: Commodity derivatives Other current assets $ 40 Accrued liabilities $ — Foreign currency derivatives* Other current assets 26 Other current assets 9 $ 17 Foreign currency derivatives* Accrued liabilities 3 Accrued liabilities 7 (4) Commodity derivatives Other long-term assets 10 Other long-term liabilities — Foreign currency derivatives* Other long-term assets 4 Other long-term assets 1 3 Foreign currency derivatives* Other long-term liabilities 2 Other long-term liabilities 4 (2) Derivatives designated as net investment hedges: Foreign currency derivatives Other current assets 1 Accrued liabilities — Total derivatives designated as hedges $ 86 $ 21 Derivatives not designated: Commodity derivatives Other current assets $ 5 Accrued liabilities $ — Total derivatives not designated as hedges $ 5 $ — Asset Derivatives Liability Derivatives Net Amounts of Assets and (Liabilities) Presented in the Balance Sheet Balance Sheet Location December 31, Balance Sheet Location December 31, December 31, (in millions) Derivatives designated as cash flow hedges: Commodity derivatives Other current assets $ 26 Accrued liabilities $ — Foreign currency derivatives* Other current assets 24 Other current assets 5 $ 19 Foreign currency derivatives* Accrued liabilities 7 Accrued liabilities 13 (6) Commodity derivatives Other long-term assets 9 Other long-term liabilities — Foreign currency derivatives* Other long-term assets 17 Other long-term assets 4 13 Foreign currency derivatives* Other long-term liabilities — Other long-term liabilities 1 (1) Derivatives designated as net investment hedges: Foreign currency derivatives Other current assets — Accrued liabilities 2 Total derivatives designated as hedges $ 83 $ 25 Derivatives not designated: Foreign currency derivatives* Other current assets $ 3 Other current assets $ — 3 Total derivatives not designated as hedges $ 3 $ — * Derivative instruments within this category are subject to master netting arrangements and are presented on a net basis in the consolidated balance sheets in accordance with accounting guidance related to the offsetting of amounts related to certain contracts. The fair value of Aptiv’s derivative financial instruments was in a net asset position as of June 30, 2021 and December 31, 2020. Effect of Derivatives on the Statements of Operations and Statements of Comprehensive Income The pre-tax effect of derivative financial instruments in the consolidated statements of operations and consolidated statements of comprehensive income for the three and six months ended June 30, 2021 and 2020 is as follows: Three Months Ended June 30, 2021 Gain (Loss) Recognized in OCI Gain Reclassified from OCI into Income (in millions) Derivatives designated as cash flow hedges: Commodity derivatives $ 17 $ 20 Foreign currency derivatives 16 — Derivatives designated as net investment hedges: Foreign currency derivatives (8) — Total $ 25 $ 20 Gain Recognized in Income (in millions) Derivatives not designated: Foreign currency derivatives $ — Total $ — Three Months Ended June 30, 2020 Gain Recognized in OCI Loss Reclassified from OCI into Income (in millions) Derivatives designated as cash flow hedges: Commodity derivatives $ 28 $ (8) Foreign currency derivatives 26 (14) Derivatives designated as net investment hedges: Foreign currency derivatives — — Total $ 54 $ (22) Loss Recognized in Income (in millions) Derivatives not designated: Foreign currency derivatives $ (2) Total $ (2) Six Months Ended June 30, 2021 Gain (Loss) Recognized in OCI Gain Reclassified from OCI into Income (in millions) Derivatives designated as cash flow hedges: Commodity derivatives $ 51 $ 39 Foreign currency derivatives (7) — Derivatives designated as net investment hedges: Foreign currency derivatives (7) — Total $ 37 $ 39 Gain (Loss) Recognized in Income (in millions) Derivatives not designated: Commodity derivatives $ 1 Foreign currency derivatives (2) Total $ (1) Six Months Ended June 30, 2020 (Loss) Gain Recognized in OCI Loss Reclassified from OCI into Income (in millions) Derivatives designated as cash flow hedges: Commodity derivatives $ (11) $ (11) Foreign currency derivatives (85) (7) Derivatives designated as net investment hedges: Foreign currency derivatives 1 — Total $ (95) $ (18) Loss Recognized in Income (in millions) Derivatives not designated: Foreign currency derivatives $ (4) Total $ (4)

Fair Value Of Financial Instrum

Fair Value Of Financial Instruments	6 Months Ended
	Jun. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	FAIR VALUE OF FINANCIAL INSTRUMENTS Fair Value Measurements on a Recurring Basis Derivative instruments —All derivative instruments are required to be reported on the balance sheet at fair value unless the transactions qualify and are designated as normal purchases or sales. Changes in fair value are reported currently through earnings unless they meet hedge accounting criteria. Aptiv’s derivative exposures are with counterparties with long-term investment grade credit ratings. Aptiv estimates the fair value of its derivative contracts using an income approach based on valuation techniques to convert future amounts to a single, discounted amount. Estimates of the fair value of foreign currency and commodity derivative instruments are determined using exchange traded prices and rates. Aptiv also considers the risk of non-performance in the estimation of fair value, and includes an adjustment for non-performance risk in the measure of fair value of derivative instruments. The non-performance risk adjustment reflects the credit default spread (“CDS”) applied to the net commodity by counterparty and foreign currency exposures by counterparty. When Aptiv is in a net derivative asset position, the counterparty CDS rates are applied to the net derivative asset position. When Aptiv is in a net derivative liability position, estimates of peer companies’ CDS rates are applied to the net derivative liability position. In certain instances where market data is not available, Aptiv uses management judgment to develop assumptions that are used to determine fair value. This could include situations of market illiquidity for a particular currency or commodity or where observable market data may be limited. In those situations, Aptiv generally surveys investment banks and/or brokers and utilizes the surveyed prices and rates in estimating fair value. As of June 30, 2021 and December 31, 2020, Aptiv was in a net derivative asset position of $70 million and $61 million, respectively, and no significant adjustments were recorded for nonperformance risk based on the application of peer companies’ CDS rates, evaluation of our own nonperformance risk and because Aptiv’s exposures were to counterparties with investment grade credit ratings. Refer to Note 14. Derivatives and Hedging Activities for further information regarding derivatives. Contingent consideration —The liability for contingent consideration is estimated as of the date of the acquisition and is recorded as part of the purchase price, and is subsequently re-measured to fair value at each reporting date, based on a probability-weighted analysis using a rate that reflects the uncertainty surrounding the expected outcomes, which the Company believes is appropriate and representative of market participant assumptions. The measurement of the liability for contingent consideration is based on significant inputs that are not observable in the market, and is therefore classified as a Level 3 measurement in accordance with ASC Topic 820-10-35. Examples of utilized unobservable inputs are estimated future earnings or milestone achievements of the acquired businesses and applicable discount rates. The estimate of the liability may fluctuate if there are changes in the actual or forecasted inputs utilized or in the discount rates used to determine the present value of contingent future cash flows. The Company regularly reviews these assumptions and makes adjustments to the fair value measurements as required by facts and circumstances. As of June 30, 2021, the Company has determined that all earn-out provisions have been achieved under existing agreements. As of June 30, 2021 and December 31, 2020, the liability for contingent consideration classified within other current liabilities was $52 million and $52 million, respectively, representing the maximum required amounts to be paid under existing agreements. Adjustments to this liability for interest accretion are recognized in interest expense, and any other changes in the fair value of this liability are recognized within other income (expense), net in the consolidated statements of operations. There were no changes in the contingent consideration liability classified as a Level 3 measurement during the six months ended June 30, 2021. In accordance with existing agreements, the Company was required to deposit $52 million related to the contingent consideration liability into an escrow account (of which $16 million was deposited in the second quarter of 2019, $16 million was deposited in the first quarter of 2020 and $20 million was deposited in the first quarter of 2021). Accordingly, this amount is classified as restricted cash in the consolidated balance sheets. All amounts are anticipated to be released from the escrow account in the fourth quarter of 2021. Publicly traded equity securities —All publicly traded equity securities are reported at fair value as of each reporting date. The measurement of the asset is based on quoted prices for identical assets on active market exchanges. Gains and losses from changes in the fair value of these securities are recorded within other income (expense), net on the consolidated statement of operations. As of June 30, 2021 and December 31, 2020, Aptiv had the following assets measured at fair value on a recurring basis: Total Quoted Prices in Active Markets Significant Other Observable Inputs Significant Unobservable Inputs (in millions) As of June 30, 2021: Commodity derivatives $ 55 $ — $ 55 $ — Foreign currency derivatives 21 — 21 — Publicly traded equity securities 49 49 — — Total $ 125 $ 49 $ 76 $ — As of December 31, 2020: Commodity derivatives $ 35 $ — $ 35 $ — Foreign currency derivatives 35 — 35 — Total $ 70 $ — $ 70 $ — As of June 30, 2021 and December 31, 2020, Aptiv had the following liabilities measured at fair value on a recurring basis: Total Quoted Prices in Active Markets Significant Other Observable Inputs Significant Unobservable Inputs (in millions) As of June 30, 2021: Foreign currency derivatives $ 6 $ — $ 6 $ — Contingent consideration 52 — — 52 Total $ 58 $ — $ 6 $ 52 As of December 31, 2020: Foreign currency derivatives $ 9 $ — $ 9 $ — Contingent consideration 52 — — 52 Total $ 61 $ — $ 9 $ 52 Non-derivative financial instruments —Aptiv’s non-derivative financial instruments include cash and cash equivalents, accounts and notes receivable, accounts payable, as well as debt, which consists of its accounts receivable factoring arrangement, finance leases and other debt issued by Aptiv’s non-U.S. subsidiaries, the Revolving Credit Facility, the Tranche A Term Loan and all series of outstanding senior notes. The fair value of debt is based on quoted market prices for instruments with public market data or significant other observable inputs for instruments without a quoted public market price (Level 2). As of June 30, 2021 and December 31, 2020, total debt was recorded at $4,047 million and $4,101 million, respectively, and had estimated fair values of $4,501 million and $4,490 million, respectively. For all other financial instruments recorded at June 30, 2021 and December 31, 2020, fair value approximates book value. Fair Value Measurements on a Nonrecurring Basis In addition to items that are measured at fair value on a recurring basis, Aptiv also has items in its balance sheet that are measured at fair value on a nonrecurring basis. As these items are not measured at fair value on a recurring basis, they are not included in the tables above. Nonfinancial assets and liabilities that are measured at fair value on a nonrecurring basis include certain long-lived assets, equity investments without readily determinable fair values, intangible assets, asset retirement obligations, share-based compensation and liabilities for exit or disposal activities measured at fair value upon initial recognition. Aptiv recorded no non-cash asset impairment charges during the three and six months ended June 30, 2021. Aptiv recorded non-cash asset impairment charges totaling $4 million for the three months ended June 30, 2020, within cost of sales related to declines in the fair values of certain fixed assets. Fair value of long-lived and intangible assets is determined primarily using the anticipated cash flows discounted at a rate commensurate with the risk involved and a review of appraisals or other market indicators and management estimates. As such, Aptiv has determined that the fair value measurements of long-lived and intangible assets fall in Level 3 of the fair value hierarchy.

Other Income, Net

Other Income, Net	6 Months Ended
	Jun. 30, 2021
Other Income and Expenses [Abstract]
Other Income, Net	OTHER INCOME, NET Other income (expense), net included: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (in millions) Interest income $ 2 $ 1 $ 5 $ 4 Loss on modification of debt (1) (4) (1) (4) Components of net periodic benefit cost other than service cost (Note 9) (9) (5) (14) (10) Gain on change in fair value of publicly traded equity securities 9 — 9 — Other, net (1) 2 2 3 Other (expense) income, net $ — $ (6) $ 1 $ (7) During the three months ended June 30, 2021, an unrealized gain of $9 million was recognized for publicly traded equity securities still held as of June 30, 2021. Also, as further discussed in Note 8. Debt, during the three months ended June 30, 2021, Aptiv recorded a loss on debt modification of $1 million in conjunction with the June 2021 amendment to the Credit Agreement.

Acquisitions And Divestitures

Acquisitions And Divestitures	6 Months Ended
	Jun. 30, 2021
Business Combinations [Abstract]
Acquisitions and Divestitures	ACQUISITIONS AND DIVESTITURES Acquisition of Ulti-Mate Connector, Inc. On April 30, 2021, Aptiv acquired certain assets of Ulti-Mate Connector, Inc. (“Ulti-Mate”), a manufacturer of miniature and micro-miniature connectors and cable assemblies, for total consideration of $45 million, net of cash acquired. The results of the operations of Ulti-Mate are reported within the Signal and Power Solutions segment from the date of acquisition. The Company acquired Ulti-Mate utilizing cash on hand. The acquisition was accounted for as a business combination, with the total purchase price allocated on a preliminary basis using information available, in the second quarter of 2021. The preliminary purchase price and related allocation to the acquired net assets of Ulti-Mate based on their estimated fair values is shown below (in millions): Assets acquired and liabilities assumed Purchase price, cash consideration, net of cash acquired $ 45 Intangible assets $ 17 Other assets, net 5 Identifiable net assets acquired 22 Goodwill resulting from purchase 23 Total purchase price allocation $ 45 Intangible assets primarily include amounts recognized for the fair value of customer-based assets, which will be amortized over their estimated useful lives of approximately 9 years. The estimated fair value of these assets was based on third-party valuations and management’s estimates, generally utilizing income and market approaches. Goodwill recognized in this transaction is primarily attributable to synergies expected to arise after the acquisition, and an insignificant portion of the goodwill is expected to be deductible for tax purposes. The purchase price and related allocation are preliminary and could be revised as a result of adjustments made to the purchase price, additional information obtained regarding liabilities assumed, including, but not limited to, contingent liabilities, revisions of provisional estimates of fair values, including, but not limited to, the completion of independent appraisals and valuations related to property, plant and equipment and intangible assets, and certain tax attributes. The pro forma effects of this acquisition would not materially impact the Company’s reported results for any period presented, and as a result no pro forma financial statements were presented. Acquisition of Dynawave Inc. On August 4, 2020, Aptiv acquired 100% of the equity interests of Dynawave Inc. (“Dynawave”), a specialized manufacturer of custom-engineered interconnect solutions for a wide range of industries, for total consideration of $22 million. The results of the operations of Dynawave are reported within the Signal and Power Solutions segment from the date of the acquisition. The Company acquired Dynawave utilizing cash on hand. The acquisition was accounted for as a business combination, with the total purchase price allocated on a preliminary basis using information available, in the third quarter of 2020. The preliminary purchase price and related allocation to the acquired net assets of Dynawave based on their estimated fair values is shown below (in millions): Assets acquired and liabilities assumed Purchase price, cash consideration, net of cash acquired $ 22 Intangible assets $ 7 Other assets, net 5 Identifiable net assets acquired 12 Goodwill resulting from purchase 10 Total purchase price allocation $ 22 Intangible assets primarily include amounts recognized for the fair value of customer-based assets, which will be amortized over their estimated useful lives of approximately 9 years. The estimated fair value of these assets was based on third-party valuations and management’s estimates, generally utilizing income and market approaches. Goodwill recognized in this transaction is primarily attributable to synergies expected to arise after the acquisition and the assembled workforce of Dynawave, and an insignificant portion of the goodwill is expected to be deductible for tax purposes. The purchase price and related allocation are preliminary and could be revised as a result of adjustments made to the purchase price, additional information obtained regarding liabilities assumed, including, but not limited to, contingent liabilities, revisions of provisional estimates of fair values, including, but not limited to, the completion of independent appraisals and valuations related to property, plant and equipment and intangible assets, and certain tax attributes. The pro forma effects of this acquisition would not materially impact the Company’s reported results for any period presented, and as a result no pro forma financial statements were presented. Technology Investments The Company has made technology investments in certain non-consolidated affiliates for ownership interests of less than 20%, as described in Note 2. Significant Accounting Policies. Certain of these investments do not have readily determinable fair values and are measured at cost, less impairments, adjusted for observable price changes in orderly transactions for identical or similar investments of the same issuer. The Company also holds technology investments in publicly traded equity securities. These investments are measured at fair value based on quoted prices for identical assets on active market exchanges. The following is a summary of technology investments, which are classified within other long-term assets in the consolidated balance sheets, as of June 30, 2021 and December 31, 2020: Investment Name Segment June 30, 2021 December 31, 2020 (in millions) Krono-Safe, SAS Advanced Safety and User Experience $ 6 $ 6 Affectiva, Inc. Advanced Safety and User Experience — 15 Innoviz Technologies Advanced Safety and User Experience — 25 LeddarTech, Inc. Advanced Safety and User Experience 10 10 Valens Semiconductor Ltd. Signal and Power Solutions 10 10 Otonomo Technologies Ltd. Advanced Safety and User Experience 37 37 Quanergy Systems, Inc Advanced Safety and User Experience 6 6 Publicly traded equity securities Advanced Safety and User Experience 49 — Other investments Advanced Safety and User Experience 6 4 Total $ 124 $ 113 In April 2021, Innoviz Technologies (“Innoviz”) merged with a publicly traded Special Purpose Acquisition Company (“SPAC”) and shares of Innoviz began trading on the Nasdaq Capital Market under the symbol INVZ. As part of the SPAC merger, our preferred shares in Innoviz were converted into Innoviz ordinary shares. Following this conversion, the fair value of the Innoviz investment is measured on a recurring basis, with changes in fair value recorded to other income (expense), net. As of June 30, 2021, Aptiv’s shares of Innoviz were valued at $34 million and are included within publicly traded equity securities in the table above. In June 2021, Affectiva, Inc. (“Affectiva”) was acquired by Smart Eye AB (“Smart Eye”), which is publicly traded on the Nasdaq Stockholm AB stock exchange. As part of the acquisition, Aptiv received shares of Smart Eye in exchange for Aptiv’s Affectiva preferred shares. Following the acquisition, the fair value of Aptiv’s Smart Eye investment is measured on a recurring basis, with changes in fair value recorded to other income (expense), net. As of June 30, 2021, Aptiv’s shares of Smart Eye were valued at $15 million and are included within publicly traded equity securities in the table above. There were no other material transactions, events or changes in circumstances requiring an impairment or an observable price change adjustment to our investments without readily determinable fair value. The Company continues to monitor these investments to identify potential transactions which may indicate an impairment or an observable price change requiring an adjustment to its carrying value. Autonomous Driving Joint Venture On March 26, 2020, Aptiv completed the transaction with Hyundai Motor Group (“Hyundai”) to form a joint venture focused on the design, development and commercialization of autonomous driving technologies. The joint venture operates globally under the Motional brand name. Under the terms of the agreement, Aptiv contributed to the joint venture autonomous driving technology, intellectual property and approximately 700 employees for a 50% ownership interest in the entity. Hyundai contributed to the joint venture approximately $1.6 billion in cash, along with vehicle engineering services, research and development resources and access to intellectual property for a 50% ownership interest in the entity. As a result, subsequent to the closing of the transaction, the joint venture is expected to fund all of its future operating expenses and investments in autonomous driving technologies for the foreseeable future. Consequently, Aptiv is no longer required to fund these investments and expenses, which approximated $180 million for the year ended December 31, 2019 prior to the joint venture formation. Upon closing of the transaction, Aptiv deconsolidated the carrying value of the associated assets and liabilities contributed to the joint venture, previously classified as held for sale, and recognized an asset of approximately $2 billion within investments in affiliates in the consolidated balance sheet, based on the preliminary fair value of its investment in the newly formed joint venture. The Company recognized a pre-tax gain of approximately $1.4 billion in the consolidated statement of operations (approximately $5.57 per diluted share during the six months ended June 30, 2020), net of transaction costs of $22 million, based on the difference between the carrying value of its contribution to the joint venture and the preliminary fair value of its investment in the entity. The estimated fair value of Aptiv’s ownership interest in the joint venture was determined primarily based on third-party valuations and management estimates, generally utilizing income and market approaches. Determining the fair value of the joint venture and the underlying assets requires the use of management’s judgment and involves significant estimates and assumptions with respect to the timing and amount of future cash flows, market rate assumptions, projected growth rates and margins, and appropriate discount rates, among other items. The estimated fair value was determined on a preliminary basis using information available in the first quarter of 2020 and was finalized in the first quarter of 2021. The effects of this transaction would not materially impact the Company’s reported results for any period presented, and the transaction did not meet the criteria to be reflected as a discontinued operation. In connection with the closing of the transaction, Aptiv and the entity entered into various agreements to facilitate an orderly transition and to provide a framework for their relationship going forward, which included a transition services agreement. The transition services primarily involve Aptiv providing certain administrative services to the joint venture for a period of up to 24 months after the closing date. These agreements are not material to Aptiv. The Company’s investment in the joint venture is accounted for using the equity method of accounting and Aptiv recognized an equity loss of $55 million and $100 million, net of tax, during the three and six months ended June 30, 2021, respectively, and $21 million and $22 million, net of tax, during the three and six months ended June 30, 2020, respectively. The pre-tax loss of Aptiv’s autonomous driving operations that were contributed to the joint venture on March 26, 2020, included within Aptiv’s consolidated operating results, was $41 million for the six months ended June 30, 2020. Motional Lease Agreement Upon closing of the transaction, Aptiv agreed to sublease certain office space to Motional, which has a remaining lease term of approximately 8 years as of June 30, 2021. Total income under the agreement was $1 million and $2 million during the three and six months ended June 30, 2021, respectively, and $1 million and $1 million during the three and six months ended June 30, 2020, respectively. The sublease income and Aptiv’s associated operating lease cost are recorded to cost of sales in the consolidated statement of operations. The Company believes the terms of the lease agreement have not significantly been affected by the fact the Company and the lessee are related parties.

Share-Based Compensation

Share-Based Compensation	6 Months Ended
	Jun. 30, 2021
Share-based Payment Arrangement [Abstract]
Share-Based Compensation	SHARE-BASED COMPENSATION Long-Term Incentive Plan The Aptiv PLC Long-Term Incentive Plan, as amended and restated effective April 23, 2015 (the “PLC LTIP”), allows for the grant of awards of up to 25,665,448 ordinary shares for long-term compensation. The PLC LTIP is designed to align the interests of management and shareholders. The awards can be in the form of shares, options, stock appreciation rights, restricted stock, restricted stock units (“RSUs”), performance awards and other share-based awards to the employees, directors, consultants and advisors of the Company. The Company has awarded annual long-term grants of RSUs under the PLC LTIP in order to align management compensation with Aptiv’s overall business strategy. In addition, the Company has competitive and market-appropriate ownership requirements for its directors and officers. All of the RSUs granted under the PLC LTIP are eligible to receive dividend equivalents for any dividend paid from the grant date through the vesting date. Dividend equivalents are generally paid out in ordinary shares upon vesting of the underlying RSUs. Board of Director Awards Aptiv has granted RSUs to the Board of Directors as detailed in the table below: Grant Date RSUs granted Grant Date Fair Value (1) Vesting Date Shares Issued Upon Vesting Fair Value of Shares at Issuance Shares Withheld to Cover Withholding Taxes (dollars in millions) April 2021 17,589 $ 3 April 2022 N/A N/A N/A April 2020 48,745 3 April 2021 41,896 $ 6 6,849 April 2019 20,765 2 April 2020 23,816 1 2,041 (1) Determined based on the closing price of the Company’s ordinary shares on the date of the grant. Executive Awards Aptiv has made annual grants of RSUs to its executives in February of each year beginning in 2012. These awards include a time-based vesting portion and a performance-based vesting portion, as well as continuity awards in certain years. The time-based RSUs, which make up 40% (25% prior to 2021) of the awards for Aptiv’s officers and 50% for Aptiv’s other executives, vest ratably over three years beginning on the first anniversary of the grant date. The performance-based RSUs, which make up 60% (75% prior to 2021) of the awards for Aptiv’s officers and 50% for Aptiv’s other executives, vest at the completion of a three-year performance period if certain targets are met. Each executive will receive between 0% and 150% of his or her target performance-based award based on the Company’s performance against established company-wide performance metrics, which are: Metric 2020 - 2021 2017 - 2019 Average return on net assets (1) 33% 50% Cumulative net income 33% 25% Relative total shareholder return (2) 33% 25% (1) Average return on net assets is measured by tax-affected operating income divided by average net working capital plus average net property, plant and equipment for each calendar year during the respective performance period. (2) Relative total shareholder return is measured by comparing the average closing price per share of the Company’s ordinary shares for the specified trading days in the fourth quarter of the end of the performance period to the average closing price per share of the Company’s ordinary shares for the specified trading days in the fourth quarter of the year preceding the grant, including dividends, and assessed against a comparable measure of competitor and peer group companies. The details of the executive grants were as follows: Grant Date RSUs Granted Grant Date Fair Value Time-Based Award Vesting Dates Performance-Based Award Vesting Date (in millions) February 2017 0.80 $ 63 Annually on anniversary of grant date, 2018 - 2020 December 31, 2019 February 2018 0.63 61 Annually on anniversary of grant date, 2019 - 2021 December 31, 2020 February 2019 0.71 62 Annually on anniversary of grant date, 2020 - 2022 December 31, 2021 February 2020 0.75 62 Annually on anniversary of grant date, 2021 - 2023 December 31, 2022 February 2021 0.44 72 Annually on anniversary of grant date, 2022 - 2024 December 31, 2023 The grant date fair value of the RSUs is determined based on the target number of awards issued, the closing price of the Company’s ordinary shares on the date of the grant of the award, including an estimate for forfeitures, and a contemporaneous valuation performed by an independent valuation specialist with respect to the relative total shareholder return awards. Any new executives hired after the annual executive RSU grant date may be eligible to participate in the PLC LTIP. The Company has also granted additional awards to employees in certain periods under the PLC LTIP. Any off cycle grants made for new hires or to other employees are valued at their grant date fair value based on the closing price of the Company’s ordinary shares on the date of such grant. The details of the shares issued upon vesting of the executive grants are as follows: Time-Based Awards Performance-Based Awards Vesting Date Ordinary Shares Issued Upon Vesting Fair Value of Shares at Issuance Ordinary Shares Withheld to Cover Withholding Taxes Ordinary Shares Issued Upon Vesting Fair Value of Shares at Issuance Ordinary Shares Withheld to Cover Withholding Taxes (in millions) (in millions) Q1 2021 449,426 $ 67 177,825 288,074 $ 43 121,609 Q1 2020 468,240 37 181,495 580,390 45 243,080 A summary of RSU activity, including award grants, vesting and forfeitures is provided below: RSUs Weighted Average Grant Date Fair Value (in thousands) Nonvested, January 1, 2021 1,786 $ 102.95 Granted 575 160.28 Vested (497) 79.97 Forfeited (89) 110.31 Nonvested, June 30, 2021 1,775 127.61 Aptiv recognized compensation expense of $28 million ($28 million, net of tax) and $13 million ($13 million, net of tax) based on the Company’s best estimate of ultimate performance against the respective targets during the three months ended June 30, 2021 and 2020, respectively. Aptiv recognized share-based compensation expense of $57 million ($57 million, net of tax) and $12 million ($12 million, net of tax) based on the Company’s best estimate of ultimate performance against the respective targets during the six months ended June 30, 2021 and 2020, respectively. Aptiv will continue to recognize compensation expense, based on the grant date fair value of the awards applied to the Company’s best estimate of ultimate performance against the respective targets, over the requisite vesting periods of the awards. Based on the grant date fair value of the awards and the Company’s best estimate of ultimate performance against the respective targets as of June 30, 2021, unrecognized compensation expense on a pre-tax basis of approximately $168 million is anticipated to be recognized over a weighted average period of approximately 2 years. For the six months ended June 30, 2021 and 2020, approximately $45 million and $33 million, respectively, of cash was paid and reflected as a financing activity in the statements of cash flows related to the tax withholding for vested RSUs.

Segment Reporting

Segment Reporting	6 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
Segment Reporting	SEGMENT REPORTING Aptiv operates its core business along the following operating segments, which are grouped on the basis of similar product, market and operating factors: • Signal and Power Solutions, which includes complete electrical architecture and component products. • Advanced Safety and User Experience, which includes component and systems integration expertise in advanced safety, user experience and connectivity and security solutions, as well as advanced software development and autonomous driving technologies. • Eliminations and Other, which includes i) the elimination of inter-segment transactions, and ii) certain other expenses and income of a non-operating or strategic nature. The accounting policies of the segments are the same as those described in Note 2. Significant Accounting Policies, except that the disaggregated financial results for the segments have been prepared using a management approach, which is consistent with the basis and manner in which management internally disaggregates financial information for which Aptiv’s chief operating decision maker regularly reviews financial results to assess performance of, and make internal operating decisions about allocating resources to, the segments. Generally, Aptiv evaluates segment performance based on stand-alone segment net income (loss) before interest expense, other income (expense), net, income tax (expense) benefit, equity income (loss), net of tax, restructuring, other acquisition and portfolio project costs (which includes costs incurred to integrate acquired businesses and to plan and execute product portfolio transformation actions, including business and product acquisitions and divestitures), asset impairments, gains (losses) on business divestitures and other transactions and deferred compensation related to acquisitions (“Adjusted Operating Income (Loss)”) and accounts for inter-segment sales and transfers as if the sales or transfers were to third parties, at current market prices. Aptiv’s management utilizes Adjusted Operating Income (Loss) as the key performance measure of segment income or loss to evaluate segment performance, and for planning and forecasting purposes to allocate resources to the segments, as management believes this measure is most reflective of the operational profitability or loss of Aptiv’s operating segments. Segment Adjusted Operating Income (Loss) should not be considered a substitute for results prepared in accordance with U.S. GAAP and should not be considered an alternative to net income (loss) attributable to Aptiv, which is the most directly comparable financial measure to Adjusted Operating Income (Loss) that is prepared in accordance with U.S. GAAP. Segment Adjusted Operating Income (Loss), as determined and measured by Aptiv, should also not be compared to similarly titled measures reported by other companies. Included below are sales and operating data for Aptiv’s segments for the three and six months ended June 30, 2021 and 2020. Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other (1) Total (in millions) For the Three Months Ended June 30, 2021: Net sales $ 2,846 $ 970 $ (9) $ 3,807 Depreciation and amortization $ 153 $ 44 $ — $ 197 Adjusted operating income $ 277 $ 24 $ — $ 301 Operating income $ 265 $ 20 $ — $ 285 Equity income (loss), net of tax $ 2 $ (55) $ — $ (53) Net income attributable to noncontrolling interest $ 3 $ — $ — $ 3 Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other (1) Total (in millions) For the Three Months Ended June 30, 2020: Net sales $ 1,435 $ 530 $ (5) $ 1,960 Depreciation and amortization $ 143 $ 41 $ — $ 184 Adjusted operating loss $ (143) $ (86) $ — $ (229) Operating loss $ (208) $ (103) $ — $ (311) Equity income (loss), net of tax $ 3 $ (21) $ — $ (18) Net income attributable to noncontrolling interest $ 1 $ — $ — $ 1 Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other (1) Total (in millions) For the Six Months Ended June 30, 2021: Net sales $ 5,868 $ 1,981 $ (19) $ 7,830 Depreciation and amortization $ 302 $ 88 $ — $ 390 Adjusted operating income $ 648 $ 90 $ — $ 738 Operating income $ 637 $ 77 $ — $ 714 Equity income (loss), net of tax $ 5 $ (100) $ — $ (95) Net income attributable to noncontrolling interest $ 8 $ — $ — $ 8 Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other (1) Total (in millions) For the Six Months Ended June 30, 2020: Net sales $ 3,765 $ 1,432 $ (11) $ 5,186 Depreciation and amortization $ 282 $ 82 $ — $ 364 Adjusted operating income (loss) $ 82 $ (80) $ — $ 2 Operating (loss) income (2) $ (9) $ 1,317 $ — $ 1,308 Equity income (loss), net of tax $ 6 $ (22) $ — $ (16) Net loss attributable to noncontrolling interest $ (4) $ — $ — $ (4) (1) Eliminations and Other includes the elimination of inter-segment transactions. (2) Includes a pre-tax gain of $1.4 billion within Advanced Safety and User Experience for the completion of the Motional autonomous driving joint venture. Refer to Note 17. Acquisitions and Divestitures for additional information. The reconciliation of Adjusted Operating Income (Loss) to operating income (loss) includes, as applicable, restructuring, other acquisition and portfolio project costs (which includes costs incurred to integrate acquired businesses and to plan and execute product portfolio transformation actions, including business and product acquisitions and divestitures), asset impairments, gains (losses) on business divestitures and other transactions and deferred compensation related to acquisitions. The reconciliations of Adjusted Operating Income (Loss) to net income (loss) attributable to Aptiv for the three and six months ended June 30, 2021 and 2020 are as follows: Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other Total (in millions) For the Three Months Ended June 30, 2021: Adjusted operating income $ 277 $ 24 $ — $ 301 Restructuring (11) (3) — (14) Other acquisition and portfolio project costs (1) (1) — (2) Operating income $ 265 $ 20 $ — 285 Interest expense (38) Income before income taxes and equity loss 247 Income tax expense (28) Equity loss, net of tax (53) Net income 166 Net income attributable to noncontrolling interest 3 Net income attributable to Aptiv $ 163 Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other Total (in millions) For the Three Months Ended June 30, 2020: Adjusted operating loss $ (143) $ (86) $ — $ (229) Restructuring (60) (12) — (72) Other acquisition and portfolio project costs (1) (1) — (2) Asset impairments (4) — — (4) Deferred compensation related to acquisitions — (4) — (4) Operating loss $ (208) $ (103) $ — (311) Interest expense (44) Other expense, net (6) Loss before income taxes and equity loss (361) Income tax benefit 14 Equity loss, net of tax (18) Net loss (365) Net income attributable to noncontrolling interest 1 Net loss attributable to Aptiv $ (366) Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other Total (in millions) For the Six Months Ended June 30, 2021: Adjusted operating income $ 648 $ 90 $ — $ 738 Restructuring (9) (11) — (20) Other acquisition and portfolio project costs (2) (2) — (4) Operating income $ 637 $ 77 $ — 714 Interest expense (78) Other income, net 1 Income before income taxes and equity loss 637 Income tax expense (76) Equity loss, net of tax (95) Net income 466 Net income attributable to noncontrolling interest 8 Net income attributable to Aptiv $ 458 Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other Total (in millions) For the Six Months Ended June 30, 2020: Adjusted operating income (loss) $ 82 $ (80) $ — $ 2 Restructuring (79) (21) — (100) Other acquisition and portfolio project costs (8) (8) — (16) Asset impairments (4) — — (4) Deferred compensation related to acquisitions — (8) — (8) Gain on business divestitures and other transactions — 1,434 — 1,434 Operating (loss) income $ (9) $ 1,317 $ — 1,308 Interest expense (87) Other expense, net (7) Income before income taxes and equity loss 1,214 Income tax benefit 4 Equity loss, net of tax (16) Net income 1,202 Net loss attributable to noncontrolling interest (4) Net income attributable to Aptiv $ 1,206

Revenue

Revenue	6 Months Ended
	Jun. 30, 2021
Revenue [Abstract]
Revenue	REVENUE Revenue is recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods or services. Accordingly, revenue is measured based on consideration specified in a contract with a customer. Customer contracts generally are represented by a combination of a current purchase order and a current production schedule issued by the customer. The Company recognizes revenue when it satisfies a performance obligation by transferring control over a product or service to a customer. From time to time, Aptiv enters into pricing agreements with its customers that provide for price reductions, some of which are conditional upon achieving certain joint cost savings targets. In these instances, revenue is recognized based on the agreed-upon price at the time of shipment. Sales incentives and allowances are recognized as a reduction to revenue at the time of the related sale. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction that are collected by Aptiv from a customer are excluded from revenue. Shipping and handling fees billed to customers are included in net sales, while costs of shipping and handling are included in cost of sales. Nature of Goods and Services The principal activity from which the Company generates its revenue is the manufacturing of production parts for OEM customers. Aptiv recognizes revenue for production parts at a point in time, rather than over time, as the performance obligation is satisfied when customers obtain control of the product upon title transfer and not as the product is manufactured or developed. Although production parts are highly customized with no alternative use, Aptiv does not have an enforceable right to payment as customers have the right to cancel a product program without a notification period. The amount of revenue recognized is based on the purchase order price and adjusted for revenue allocated to variable consideration (i.e. estimated rebates and price discounts), as applicable. Customers typically pay for production parts based on customary business practices with payment terms averaging 60 days. Disaggregation of Revenue Revenue generated from Aptiv’s operating segments is disaggregated by primary geographic market in the following tables for the three and six months ended June 30, 2021 and 2020. Information concerning geographic market reflects the manufacturing location. For the Three Months Ended June 30, 2021: Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other Total (in millions) Geographic Market North America $ 1,009 $ 283 $ (1) $ 1,291 Europe, Middle East and Africa 899 442 (3) 1,338 Asia Pacific 866 245 (5) 1,106 South America 72 — — 72 Total net sales $ 2,846 $ 970 $ (9) $ 3,807 For the Three Months Ended June 30, 2020: Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other Total (in millions) Geographic Market North America $ 401 $ 96 $ (1) $ 496 Europe, Middle East and Africa 367 212 (1) 578 Asia Pacific 648 222 (3) 867 South America 19 — — 19 Total net sales $ 1,435 $ 530 $ (5) $ 1,960 For the Six Months Ended June 30, 2021: Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other Total (in millions) Geographic Market North America $ 2,079 $ 596 $ (3) $ 2,672 Europe, Middle East and Africa 1,892 893 (6) 2,779 Asia Pacific 1,759 492 (10) 2,241 South America 138 — — 138 Total net sales $ 5,868 $ 1,981 $ (19) $ 7,830 For the Six Months Ended June 30, 2020: Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other Total (in millions) Geographic Market North America $ 1,406 $ 388 $ (1) $ 1,793 Europe, Middle East and Africa 1,145 655 (4) 1,796 Asia Pacific 1,140 389 (6) 1,523 South America 74 — — 74 Total net sales $ 3,765 $ 1,432 $ (11) $ 5,186 Contract Balances Consistent with the recognition of production parts revenue at a point in time as title transfers to the customer, Aptiv has no contract assets or contract liabilities balances as of June 30, 2021 or December 31, 2020. Outstanding Performance Obligations As customer contracts generally are represented by a combination of a current purchase order and a current production schedule issued by the customer for a production part, there are no contracts outstanding beyond one year. Aptiv does not enter into fixed long-term supply agreements. As permitted, Aptiv does not disclose information about remaining performance obligations that have original expected durations of one year or less. Costs to Obtain a Contract From time to time, Aptiv makes payments to customers in conjunction with ongoing business. These payments to customers are generally recognized as a reduction to revenue at the time of the commitment to make these payments. However, certain other payments to customers, or upfront fees, meet the criteria to be considered a cost to obtain a contract as they are directly attributable to a contract, are incremental and management expects the fees to be recoverable. As of June 30, 2021 and December 31, 2020, Aptiv has recorded $98 million (of which $32 million was classified within other current assets and $66 million was classified within other long-term assets) and $116 million (of which $30 million was classified within other current assets and $86 million was classified within other long-term assets), respectively, related to these capitalized upfront fees. Capitalized upfront fees are amortized to revenue based on the transfer of goods and services to the customer for which the upfront fees relate, which typically range from three to five years. There have been no impairment losses in relation to the costs capitalized. The amount of amortization to net sales was $8 million and $5 million for the three months ended June 30, 2021 and 2020, respectively, and $14 million and $9 million for the six months ended June 30, 2021 and 2020, respectively.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Consolidation, Policy	Consolidation —The consolidated financial statements include the accounts of Aptiv and United States (“U.S.”) and non-U.S. subsidiaries in which Aptiv holds a controlling financial or management interest and variable interest entities of which Aptiv has determined that it is the primary beneficiary. Aptiv’s share of the earnings or losses of non-controlled affiliates, over which Aptiv exercises significant influence (generally a 20% to 50% ownership interest), is included in the consolidated operating results using the equity method of accounting. When Aptiv does not have the ability to exercise significant influence (generally when ownership interest is less than 20%), investments in non-consolidated affiliates without readily determinable fair value are measured at cost, less impairments, adjusted for observable price changes in orderly transactions for identical or similar investments of the same issuer, while investments in publicly traded equity securities are measured at fair value based on quoted prices for identical assets on active market exchanges as of each reporting date. The Company monitors its investments in affiliates for indicators of other-than-temporary declines in value on an ongoing basis. If the Company determines that such a decline has occurred, an impairment loss is recorded, which is measured as the difference between carrying value and estimated fair value. Estimated fair value is generally determined using an income approach based on discounted cash flows or negotiated transaction values. Intercompany transactions and balances between consolidated Aptiv businesses have been eliminated. During the three months ended June 30, 2021, Aptiv received a dividend of $4 million from one of its equity method investments. The dividend was recognized as a reduction to the investment and represented a return on investment in cash flows from operating activities. Aptiv’s equity investments without readily determinable fair values totaled $75 million and $113 million as of June 30, 2021 and December 31, 2020, respectively, and are classified within other long-term assets in the consolidated balance sheets. Aptiv’s investments in publicly traded equity securities totaled $49 million as of June 30, 2021 and are classified within other long-term assets in the consolidated balance sheets. There were no publicly traded equity securities held as of December 31, 2020. Refer to Note 17. Acquisitions and Divestitures for additional information regarding Aptiv’s equity investments.
Use of Estimates, Policy	Use of estimates —Preparation of consolidated financial statements in conformity with U.S. GAAP requires the use of estimates and assumptions that affect amounts reported therein. Generally, matters subject to estimation and judgment include amounts related to accounts receivable realization, inventory obsolescence, asset impairments, useful lives of intangible and fixed assets, deferred tax asset valuation allowances, income taxes, pension benefit plan assumptions, accruals related to litigation, warranty costs, environmental remediation costs, contingent consideration arrangements, worker’s compensation accruals and healthcare accruals. Due to the inherent uncertainty involved in making estimates, including the duration and severity of the impacts of the COVID-19 pandemic and the ongoing global supply chain disruptions, actual results reported in future periods may be based upon amounts that differ from those estimates.
Revenue Recognition, Policy	Revenue recognition —Aptiv recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods or services. Accordingly, Revenue is recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods or services. Accordingly, revenue is measured based on consideration specified in a contract with a customer. Customer contracts generally are represented by a combination of a current purchase order and a current production schedule issued by the customer. The Company recognizes revenue when it satisfies a performance obligation by transferring control over a product or service to a customer. From time to time, Aptiv enters into pricing agreements with its customers that provide for price reductions, some of which are conditional upon achieving certain joint cost savings targets. In these instances, revenue is recognized based on the agreed-upon price at the time of shipment. Sales incentives and allowances are recognized as a reduction to revenue at the time of the related sale. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction that are collected by Aptiv from a customer are excluded from revenue. Shipping and handling fees billed to customers are included in net sales, while costs of shipping and handling are included in cost of sales. Nature of Goods and Services The principal activity from which the Company generates its revenue is the manufacturing of production parts for OEM customers. Aptiv recognizes revenue for production parts at a point in time, rather than over time, as the performance obligation is satisfied when customers obtain control of the product upon title transfer and not as the product is manufactured or developed. Although production parts are highly customized with no alternative use, Aptiv does not have an enforceable right to payment as customers have the right to cancel a product program without a notification period. The amount of revenue recognized is based on the purchase order price and adjusted for revenue allocated to variable consideration (i.e. estimated rebates and price discounts), as applicable. Customers typically pay for production parts based on customary business practices with payment terms averaging 60 days.
Net Income Per Share, Policy	Net income (loss) per share —Basic net income (loss) per share is computed by dividing net income (loss) attributable to ordinary shareholders by the weighted average number of ordinary shares outstanding during the period. Diluted net income (loss) per share reflects the weighted average dilutive impact of all potentially dilutive securities from the date of issuance and is computed using the treasury stock and if-converted methods. The if-converted method is used to determine if the impact of conversion of the 5.50% Mandatory Convertible Preferred Shares, Series A, $0.01 par value per share (the “MCPS”) into ordinary shares is more dilutive than the MCPS dividends to net income (loss) per share. If so, the MCPS are assumed to have been converted at the later of the beginning of the period or the time of issuance, and the resulting ordinary shares are included in the denominator and the MCPS dividends are added back to the numerator. Unless otherwise noted, share and per share amounts included in these notes are on a diluted basis. Refer to Note 12. Shareholders’ Equity and Net Income Per Share for additional information including the calculation of basic and diluted net income (loss) per share.
Cash and Cash Equivalents, Policy	Cash and cash equivalents —Cash and cash equivalents are defined as short-term, highly liquid investments with original maturities of three months or less, for which the book value approximates fair value.
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy	Restricted cash —Restricted cash includes balances on deposit at financial institutions that have issued letters of credit in favor of Aptiv and cash deposited into escrow accounts. Refer to Note 15. Fair Value of Financial Instruments for further information regarding amounts deposited into an escrow account.
Accounts Receivable	Accounts receivable —Aptiv enters into agreements to sell certain of its accounts receivable, primarily in Europe. Sales of receivables are accounted for in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 860, Transfers and Servicing (“ASC 860”). Agreements which result in true sales of the transferred receivables, as defined in ASC 860, which occur when receivables are transferred without recourse to the Company, are excluded from amounts reported in the consolidated balance sheets. Cash proceeds received from such sales are included in operating cash flows. Agreements that allow Aptiv to maintain effective control over the transferred receivables and which do not qualify as a sale, as defined in ASC 860, are accounted for as secured borrowings and recorded in the consolidated balance sheets within accounts receivable, net and short-term debt. The expenses associated with receivables factoring are recorded in the consolidated statements of operations within interest expense.
Credit Loss, Financial Instrument	Credit losses —Aptiv is exposed to credit losses primarily through the sale of vehicle components and services. Aptiv assesses the creditworthiness of a counterparty by conducting ongoing credit reviews, which considers the Company’s expected billing exposure and timing for payment, as well as the counterparty’s established credit rating. When a credit rating is not available, the Company’s assessment is based on an analysis of the counterparty’s financial statements. Aptiv also considers contract terms and conditions, country and political risk, and business strategy in its evaluation. Based on the outcome of this review, the Company establishes a credit limit for each counterparty. The Company continues to monitor its ongoing credit exposure through active review of counterparty balances against contract terms and due dates, which includes timely account reconciliation, payment confirmation and dispute resolution. The Company may also employ collection agencies and legal counsel to pursue recovery of defaulted receivables, if necessary. Aptiv primarily utilizes historical loss and recovery data, combined with information on current economic conditions and reasonable and supportable forecasts to develop the estimate of the allowance for doubtful accounts in accordance with ASC Topic 326, Financial Instruments – Credit Losses (“ASC 326”). As of June 30, 2021 and December 31, 2020, the Company reported $2,654 million and $2,812 million, respectively, of accounts receivable, net of allowances, which includes the allowance for doubtful accounts of $44 million and $40 million, respectively. Changes in the allowance for doubtful accounts were not material for the six months ended June 30, 2021.
Intangible Assets, Policy	Intangible assets —Intangible assets were $1,021 million and $1,091 million as of June 30, 2021 and December 31, 2020, respectively. Aptiv amortizes definite-lived intangible assets over their estimated useful lives. Aptiv has definite-lived intangible assets related to patents and developed technology, customer relationships and trade names. Indefinite-lived in-process research and development intangible assets are not amortized, but are tested for impairment annually, or more frequently when indicators of potential impairment exist, until the completion or abandonment of the associated research and development efforts. Upon completion of the projects, the assets will be amortized over the expected economic life of the asset, which will be determined on that date. Should the project be determined to be abandoned, and if the asset developed has no alternative use, the full value of the asset will be charged to expense. The Company also has intangible assets related to acquired trade names that are classified as indefinite-lived when there are no foreseeable limits on the periods of time over which they are expected to contribute cash flows. These indefinite-lived trade name assets are tested for impairment annually, or more frequently when indicators of potential impairment exist. Costs to renew or extend the term of acquired intangible assets are recognized as expense as incurred. Amortization expense was $37 million and $74 million for the three and six months ended June 30, 2021, respectively, and $35 million and $71 million for the three and six months ended June 30, 2020, respectively, which includes the impact of any intangible asset impairment charges recorded during the period.
Goodwill, Policy	Goodwill —Goodwill is the excess of the purchase price over the estimated fair value of identifiable net assets acquired in business combinations. The Company tests goodwill for impairment annually in the fourth quarter, or more frequently when indications of potential impairment exist. The Company monitors the existence of potential impairment indicators throughout the fiscal year. The Company tests for goodwill impairment at the reporting unit level. Our reporting units are the components of operating segments which constitute businesses for which discrete financial information is available and is regularly reviewed by segment management. The impairment test involves first qualitatively assessing goodwill for impairment. If the qualitative assessment is not met the Company then performs a quantitative assessment by comparing the estimated fair value of each reporting unit to its carrying value, including goodwill. Fair value reflects the price a market participant would be willing to pay in a potential sale of the reporting unit. If the estimated fair value exceeds carrying value, then we conclude that no goodwill impairment has occurred. If the carrying value of the reporting unit exceeds its estimated fair value, the Company recognizes an impairment loss in an amount equal to the excess, not to exceed the amount of goodwill allocated to the reporting unit. The Company qualitatively concluded there were no goodwill impairments during the six months ended June 30, 2021 and 2020. Goodwill was $2,547 million and $2,580 million as of June 30, 2021 and December 31, 2020, respectively.
Warranty, Policy	Warranty and product recalls —Expected warranty costs for products sold are recognized at the time of sale of the product based on an estimate of the amount that eventually will be required to settle such obligations. These accruals are based on factors such as past experience, production changes, industry developments and various other considerations. Costs of product recalls, which may include the cost of the product being replaced as well as the customer’s cost of the recall, including labor to remove and replace the recalled part, are accrued as part of our warranty accrual at the time an obligation becomes probable and can be reasonably estimated. These estimates are adjusted from time to time based on facts and circumstances that impact the status of existing claims. Refer to Note 6. Warranty Obligations for additional information.
Income Tax, Policy	Income taxes —Deferred tax assets and liabilities reflect temporary differences between the amount of assets and liabilities for financial and tax reporting purposes. Such amounts are adjusted, as appropriate, to reflect changes in tax rates expected to be in effect when the temporary differences reverse. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in earnings in the period that includes the enactment date. A valuation allowance is recorded to reduce deferred tax assets to the amount that is more likely than not to be realized. In the event the Company determines it is more likely than not that the deferred tax assets will not be realized in the future, the valuation allowance adjustment to the deferred tax assets will be charged to earnings in the period in which the Company makes such a determination. In determining whether an uncertain tax position exists, the Company determines, based solely on its technical merits, whether the tax position is more likely than not to be sustained upon examination, and if so, a tax benefit is measured on a cumulative probability basis that is more likely than not to be realized upon the ultimate settlement. In determining the provision for income taxes for financial statement purposes, the Company makes certain estimates and judgments which affect its evaluation of the carrying value of its deferred tax assets, as well as its calculation of certain tax liabilities. Refer to Note 11. Income Taxes for additional information.
Restructuring, Policy	Restructuring —Aptiv continually evaluates alternatives to align the business with the changing needs of its customers and to lower operating costs. This includes the realignment of its existing manufacturing capacity, facility closures, or similar actions, either in the normal course of business or pursuant to significant restructuring programs. These actions may result in employees receiving voluntary or involuntary employee termination benefits, which are mainly pursuant to union or other contractual agreements or statutory requirements. Voluntary termination benefits are accrued when an employee accepts the related offer. Involuntary termination benefits are accrued upon the commitment to a termination plan and when the benefit arrangement is communicated to affected employees, or when liabilities are determined to be probable and estimable, depending on the existence of a substantive plan for severance or termination. Contract termination costs and certain early termination lease costs are recorded when contracts are terminated. All other exit costs are expensed as incurred. Refer to Note 7. Restructuring for additional information.
Customer Concentations, Policy	Customer concentrations —As reflected in the table below, net sales to Stellantis N.V. (“Stellantis”), General Motors Company (“GM”) and Volkswagen Group (“VW”), Aptiv’s three largest customers, totaled approximately 29% and 28% of our total net sales for the three and six months ended June 30, 2021, respectively, and 24% and 29% our total net sales for the three and six months ended June 30, 2020, respectively. Percentage of Total Net Sales Accounts Receivable Three Months Ended June 30, Six Months Ended June 30, June 30, December 31, 2021 2020 2021 2020 (in millions) Stellantis (1) 11 % 7 % 11 % 11 % $ 291 $ 352 GM 8 % 5 % 8 % 8 % 204 200 VW 10 % 12 % 9 % 10 % 183 216
Recently Issued Accounting Pronouncements, Policy	Recently adopted accounting pronouncements —Aptiv adopted Accounting Standards Update (“ASU”) 2020-01, Investments—Equity Securities (Topic 321), Investments—Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815)—Clarifying the Interactions between Topic 321, Topic 323, and Topic 815 in the first quarter of 2021 on a prospective basis. This guidance clarifies the interactions between accounting for equity securities under the measurement alternative in Topic 321 and the equity method of accounting in Topic 323, as well as the accounting for certain forward contracts and purchased options to purchase securities that, upon settlement or exercise, would be accounted for under the equity method of accounting. The adoption of this guidance did not have a significant impact on Aptiv’s financial statements.
Inventories, Policy	Inventories are stated at the lower of cost, determined on a first-in, first-out basis, or net realizable value, including direct material costs and direct and indirect manufacturing costs.
Pensions, Policy	Certain of Aptiv’s non-U.S. subsidiaries sponsor defined benefit pension plans, which generally provide benefits based on negotiated amounts for each year of service. Aptiv’s primary non-U.S. plans are located in France, Germany, Mexico, Portugal and the U.K. The U.K. and certain Mexican plans are funded. In addition, Aptiv has defined benefit plans in South Korea, Turkey and Italy for which amounts are payable to employees immediately upon separation. The obligations for these plans are recorded over the requisite service period.Aptiv sponsors a Supplemental Executive Retirement Program (“SERP”) for those employees who were U.S. executives of the former Delphi Corporation prior to September 30, 2008 and were still U.S. executives of the Company on October 7, 2009, the effective date of the program. This program is unfunded. Executives receive benefits over 5 years after an involuntary or voluntary separation from Aptiv. The SERP is closed to new members.
Segment Reporting, Policy	The accounting policies of the segments are the same as those described in Note 2. Significant Accounting Policies, except that the disaggregated financial results for the segments have been prepared using a management approach, which is consistent with the basis and manner in which management internally disaggregates financial information for which Aptiv’s chief operating decision maker regularly reviews financial results to assess performance of, and make internal operating decisions about allocating resources to, the segments. Generally, Aptiv evaluates segment performance based on stand-alone segment net income (loss) before interest expense, other income (expense), net, income tax (expense) benefit, equity income (loss), net of tax, restructuring, other acquisition and portfolio project costs (which includes costs incurred to integrate acquired businesses and to plan and execute product portfolio transformation actions, including business and product acquisitions and divestitures), asset impairments, gains (losses) on business divestitures and other transactions and deferred compensation related to acquisitions (“Adjusted Operating Income (Loss)”) and accounts for inter-segment sales and transfers as if the sales or transfers were to third parties, at current market prices. Aptiv’s management utilizes Adjusted Operating Income (Loss) as the key performance measure of segment income or loss to evaluate segment performance, and for planning and forecasting purposes to allocate resources to the segments, as management believes this measure is most reflective of the operational profitability or loss of Aptiv’s operating segments. Segment Adjusted Operating Income (Loss) should not be considered a substitute for results prepared in accordance with U.S. GAAP and should not be considered an alternative to net income (loss) attributable to Aptiv, which is the most directly comparable financial measure to Adjusted Operating Income (Loss) that is prepared in accordance with U.S. GAAP. Segment Adjusted Operating Income (Loss), as determined and measured by Aptiv, should also not be compared to similarly titled measures reported by other companies.

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Schedule of Revenue by Major Customers by Reporting Segments	Customer concentrations —As reflected in the table below, net sales to Stellantis N.V. (“Stellantis”), General Motors Company (“GM”) and Volkswagen Group (“VW”), Aptiv’s three largest customers, totaled approximately 29% and 28% of our total net sales for the three and six months ended June 30, 2021, respectively, and 24% and 29% our total net sales for the three and six months ended June 30, 2020, respectively. Percentage of Total Net Sales Accounts Receivable Three Months Ended June 30, Six Months Ended June 30, June 30, December 31, 2021 2020 2021 2020 (in millions) Stellantis (1) 11 % 7 % 11 % 11 % $ 291 $ 352 GM 8 % 5 % 8 % 8 % 204 200 VW 10 % 12 % 9 % 10 % 183 216 (1) On January 16, 2021, Fiat Chrysler Automobiles N.V. (“FCA”) and Peugeot Citroën (“PSA”) merged to form a new, combined company (“Stellantis”). Net sales to FCA and PSA before the date of the merger are included in net sales to Stellantis in the table above for the three and six months ended June 30, 2021 and 2020. As of December 31, 2020, accounts receivable due from FCA and PSA are shown on a combined basis as accounts receivable due from Stellantis.

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2021
Inventory Disclosure [Abstract]
Schedule of Inventory, Current	A summary of inventories is shown below: June 30, December 31, (in millions) Productive material $ 1,096 $ 745 Work-in-process 172 111 Finished goods 533 441 Total $ 1,801 $ 1,297

Assets (Tables)

Assets (Tables)	6 Months Ended
	Jun. 30, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Schedule of Other Current Assets	Other current assets consisted of the following: June 30, December 31, (in millions) Value added tax receivable $ 209 $ 155 Prepaid insurance and other expenses 65 47 Reimbursable engineering costs 181 169 Notes receivable 8 8 Income and other taxes receivable 57 41 Deposits to vendors 7 5 Derivative financial instruments (Note 14) 63 48 Capitalized upfront fees (Note 20) 32 30 Total $ 622 $ 503
Schedule of Other Assets, Noncurrent	Other long-term assets consisted of the following: June 30, December 31, (in millions) Deferred income taxes, net $ 172 $ 174 Unamortized Revolving Credit Facility debt issuance costs 12 11 Income and other taxes receivable 26 25 Reimbursable engineering costs 171 186 Value added tax receivable 37 29 Equity investments (Note 17) 124 113 Derivative financial instruments (Note 14) 13 22 Capitalized upfront fees (Note 20) 66 86 Other 57 48 Total $ 678 $ 694

Liabilities (Tables)

Liabilities (Tables)	6 Months Ended
	Jun. 30, 2021
Other Liabilities Disclosure [Abstract]
Accrued Liabilities	Accrued liabilities consisted of the following: June 30, December 31, (in millions) Payroll-related obligations $ 320 $ 293 Employee benefits, including current pension obligations 66 84 Income and other taxes payable 164 177 Warranty obligations (Note 6) 40 51 Restructuring (Note 7) 62 82 Customer deposits 50 62 Derivative financial instruments (Note 14) 4 8 Accrued interest 46 48 MCPS dividends payable 3 3 Operating lease liabilities 99 100 Other 461 477 Total $ 1,315 $ 1,385
Liabilities, Noncurrent	Other long-term liabilities consisted of the following: June 30, December 31, (in millions) Environmental (Note 10) $ 4 $ 4 Extended disability benefits 5 5 Warranty obligations (Note 6) 8 8 Restructuring (Note 7) 32 43 Payroll-related obligations 11 11 Accrued income taxes 155 156 Deferred income taxes, net 210 207 Derivative financial instruments (Note 14) 2 1 Other 94 105 Total $ 521 $ 540

Warranty Obligations (Tables)

Warranty Obligations (Tables)	6 Months Ended
	Jun. 30, 2021
Product Warranties Disclosures [Abstract]
Schedule of Product Warranty Liability	The table below summarizes the activity in the product warranty liability for the six months ended June 30, 2021: Warranty Obligations (in millions) Accrual balance at beginning of period $ 59 Provision for estimated warranties incurred during the period 15 Changes in estimate for pre-existing warranties 6 Settlements made during the period (in cash or in kind) (31) Foreign currency translation and other (1) Accrual balance at end of period $ 48

Restructuring (Tables)

Restructuring (Tables)	6 Months Ended
	Jun. 30, 2021
Restructuring and Related Activities [Abstract]
Schedule of Restructuring and Related Costs	The following table summarizes the restructuring charges recorded for the three and six months ended June 30, 2021 and 2020 by operating segment: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (in millions) Signal and Power Solutions $ 11 $ 60 $ 9 $ 79 Advanced Safety and User Experience 3 12 11 21 Total $ 14 $ 72 $ 20 $ 100
Schedule of Restructuring Reserve by Type of Cost	The table below summarizes the activity in the restructuring liability for the six months ended June 30, 2021: Employee Termination Benefits Liability Other Exit Costs Liability Total (in millions) Accrual balance at January 1, 2021 $ 125 $ — $ 125 Provision for estimated expenses incurred during the period 20 — 20 Payments made during the period (48) — (48) Foreign currency and other (3) — (3) Accrual balance at June 30, 2021 $ 94 $ — $ 94

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	The following is a summary of debt outstanding, net of unamortized issuance costs and discounts, as of June 30, 2021 and December 31, 2020: June 30, December 31, (in millions) 4.15%, senior notes, due 2024 (net of $1 and $1 unamortized issuance costs and $1 and $1 discount, respectively) $ 698 $ 698 1.50%, Euro-denominated senior notes, due 2025 (net of $2 and $2 unamortized issuance costs and $1 and $2 discount, respectively) 832 857 4.25%, senior notes, due 2026 (net of $2 and $2 unamortized issuance costs, respectively) 648 648 1.60%, Euro-denominated senior notes, due 2028 (net of $3 and $3 unamortized issuance costs, respectively) 593 612 4.35%, senior notes, due 2029 (net of $2 and $3 unamortized issuance costs, respectively) 298 297 4.40%, senior notes, due 2046 (net of $3 and $3 unamortized issuance costs and $1 and $1 discount, respectively) 296 296 5.40%, senior notes, due 2049 (net of $4 and $4 unamortized issuance costs and $1 and $1 discount, respectively) 345 345 Tranche A Term Loan, due 2026 (net of $2 and $1 unamortized issuance costs, respectively) 311 320 Finance leases and other 26 28 Total debt 4,047 4,101 Less: current portion (16) (90) Long-term debt $ 4,031 $ 4,011
Schedule of Interest Rates	The Applicable Rates under the Credit Agreement on the specified dates are set forth below: June 30, 2021 December 31, 2020 LIBOR plus ABR plus LIBOR plus ABR plus Revolving Credit Facility (1) 1.10 % 0.10 % 1.10 % 0.10 % Revolving Credit Facility (2) N/A N/A 1.40 % 0.40 % Tranche A Term Loan (1) 1.125 % 0.125 % 1.25 % 0.25 % Tranche A Term Loan (2) N/A N/A 1.75 % 0.75 %
Schedule of Line of Credit Facilities	As of June 30, 2021, Aptiv selected the one-month LIBOR interest rate option on the Tranche A Term Loan, and the rates effective as of June 30, 2021, as detailed in the table below, were based on the Company’s current credit rating and the Applicable Rate for the Credit Agreement: Borrowings as of June 30, 2021 Rates effective as of Applicable Rate (in millions) June 30, 2021 Tranche A Term Loan LIBOR plus 1.125% $ 313 1.25 %

Pension Benefits (Tables)

Pension Benefits (Tables)	6 Months Ended
	Jun. 30, 2021
Defined Benefit Plan Disclosure [Line Items]
Schedule of Net Benefit Costs	The amounts shown below reflect the defined benefit pension expense for the three and six months ended June 30, 2021 and 2020: Non-U.S. Plans U.S. Plans Three Months Ended June 30, 2021 2020 2021 2020 (in millions) Service cost $ 5 $ 5 $ — $ — Interest cost 5 5 — — Expected return on plan assets (5) (4) — — Curtailment loss 5 — — — Amortization of actuarial losses 3 3 1 1 Net periodic benefit cost $ 13 $ 9 $ 1 $ 1 Non-U.S. Plans U.S. Plans Six Months Ended June 30, 2021 2020 2021 2020 (in millions) Service cost $ 10 $ 10 $ — $ — Interest cost 10 11 — — Expected return on plan assets (10) (9) — — Curtailment loss 5 — — — Amortization of actuarial losses 8 7 1 1 Net periodic benefit cost $ 23 $ 19 $ 1 $ 1

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Schedule of Income Tax Expense (Benefit) and Effective Tax Rate	The Company’s income tax expense (benefit) and effective tax rate for the three and six months ended June 30, 2021 and 2020 were as follows: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (dollars in millions) Income tax expense (benefit) $ 28 $ (14) $ 76 $ (4) Effective tax rate 11 % 4 % 12 % 0 %

Shareholders' Equity And Net _2

Shareholders' Equity And Net Income Per Share (Tables)	6 Months Ended
	Jun. 30, 2021
Shareholders' Equity and Net Income Per Share Note [Abstract]
Schedule of Weighted Average Number of Shares	The following table illustrates net income (loss) per share attributable to ordinary shareholders and the weighted average shares outstanding used in calculating basic and diluted income (loss) per share: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (in millions, except per share data) Numerator, basic: Net income (loss) attributable to ordinary shareholders $ 147 $ (369) $ 426 $ 1,203 Numerator, diluted: Net income (loss) attributable to Aptiv $ 163 $ (366) $ 458 $ 1,206 MCPS dividends (1) (16) (3) (32) — Numerator, diluted $ 147 $ (369) $ 426 $ 1,206 Denominator: Weighted average ordinary shares outstanding, basic 270.49 258.03 270.40 256.77 Dilutive shares related to restricted stock units (“RSUs”) 0.57 0.18 0.70 0.25 Weighted average MCPS Converted Shares (1) — — — 1.57 Weighted average ordinary shares outstanding, including dilutive shares 271.06 258.21 271.10 258.59 Net income (loss) per share attributable to ordinary shareholders: Basic $ 0.54 $ (1.43) $ 1.58 $ 4.69 Diluted $ 0.54 $ (1.43) $ 1.57 $ 4.66 (1) For purposes of calculating net income (loss) per share under the if-converted method, the Company has included the impact of the MCPS dividends for the three and six months ended June 30, 2021, as well as for the three months ended June 30, 2020 as the impact was more dilutive to net income (loss) per share than the impact of assuming the conversion of the MCPS into ordinary shares on a weighted average basis. The Company has excluded the impact of the MCPS dividends for the six months ended June 30, 2020, as the assumed conversion of the MCPS into ordinary shares on a weighted average basis was more dilutive than the impact of the MCPS dividends.
Schedule of Share Repurchases	A summary of the ordinary shares repurchased during the six months ended June 30, 2020 is as follows: Total number of shares repurchased 1,059,075 Average price paid per share $ 53.73 Total (in millions) $ 57
Schedule of Dividends Declared and Paid	The Company has declared and paid cash dividends per ordinary and preferred share during the periods presented as follows: Ordinary Shares Preferred Shares Dividend Amount Dividend Amount Per Share (in millions) Per Share (in millions) 2021: Second quarter $ — $ — $ 1.38 $ 16 First quarter — — 1.38 16 Total $ — $ — $ 2.76 $ 32 2020: Fourth quarter $ — $ — $ 1.38 $ 16 Third quarter — — 1.42 16 Second quarter — — — — First quarter 0.22 56 — — Total $ 0.22 $ 56 $ 2.80 $ 32

Changes in Accumulated Other _2

Changes in Accumulated Other Comprehensive Income (Tables)	6 Months Ended
	Jun. 30, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Income	The changes in accumulated other comprehensive income (loss) attributable to Aptiv (net of tax) for the three and six months ended June 30, 2021 and 2020 are shown below: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (in millions) Foreign currency translation adjustments: Balance at beginning of period $ (536) $ (723) $ (445) $ (597) Aggregate adjustment for the period (1) 42 18 (49) (108) Balance at end of period (494) (705) (494) (705) Gains (losses) on derivatives: Balance at beginning of period 33 (140) 40 13 Other comprehensive income (loss) before reclassifications (nil net tax effect for all periods presented) 25 54 37 (95) Reclassification to income (nil net tax effect for all periods presented) (20) 22 (39) 18 Balance at end of period 38 (64) 38 (64) Pension and postretirement plans: Balance at beginning of period (133) (128) (140) (135) Other comprehensive income before reclassifications (net tax expense (benefit) of $1, $0, ($1) and ($1)) 15 — 18 4 Reclassification to income (net tax benefit of $1, $1, $2 and $2) 8 3 12 6 Balance at end of period (110) (125) (110) (125) Accumulated other comprehensive loss, end of period $ (566) $ (894) $ (566) $ (894) (1) Includes losses of $19 million and gains $44 million for the three and six months ended June 30, 2021, respectively, and losses of $8 million and $2 million for the three and six months ended June 30, 2020, respectively, related to non-derivative net investment hedges. Refer to Note 14. Derivatives and Hedging Activities for further description of these hedges.
Reclassifications out of Accumulated Other Comprehensive Income	Reclassifications from accumulated other comprehensive income (loss) to income for the three and six months ended June 30, 2021 and 2020 were as follows: Reclassification Out of Accumulated Other Comprehensive Income (Loss) Details About Accumulated Other Comprehensive Income Components Three Months Ended June 30, Six Months Ended June 30, Affected Line Item in the Statements of Operations 2021 2020 2021 2020 (in millions) Gains (losses) on derivatives: Commodity derivatives $ 20 $ (8) $ 39 $ (11) Cost of sales Foreign currency derivatives — (14) — (7) Cost of sales 20 (22) 39 (18) Income (loss) before income taxes — — — — Income tax (expense) benefit 20 (22) 39 (18) Net income (loss) — — — — Net income attributable to noncontrolling interest $ 20 $ (22) $ 39 $ (18) Net income (loss) attributable to Aptiv Pension and postretirement plans: Actuarial losses $ (4) $ (4) $ (9) $ (8) Other (expense) income, net (1) Curtailment loss (5) — (5) — Other (expense) income, net (1) (9) (4) (14) (8) Income (loss) before income taxes 1 1 2 2 Income tax (expense) benefit (8) (3) (12) (6) Net income (loss) — — — — Net income attributable to noncontrolling interest $ (8) $ (3) $ (12) $ (6) Net income (loss) attributable to Aptiv Total reclassifications for the period $ 12 $ (25) $ 27 $ (24) (1) These accumulated other comprehensive loss components are included in the computation of net periodic pension cost (see Note 9. Pension Benefits for additional details).

Derivatives And Hedging Activ_2

Derivatives And Hedging Activities (Tables)	6 Months Ended
	Jun. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts of Outstanding Derivative Positions	As of June 30, 2021, the Company had the following outstanding notional amounts related to commodity and foreign currency forward and option contracts designated as cash flow hedges that were entered into to hedge forecasted exposures: Commodity Quantity Hedged Unit of Measure Notional Amount (in thousands) (in millions) Copper 74,033 pounds $ 325 Foreign Currency Quantity Hedged Unit of Measure Notional Amount (in millions) Mexican Peso 14,868 MXN $ 750 Chinese Yuan Renminbi 2,458 RMB 380 Euro 187 EUR 225 Polish Zloty 542 PLN 145 Hungarian Forint 9,743 HUF 35
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	The fair value of derivative financial instruments recorded in the consolidated balance sheets as of June 30, 2021 and December 31, 2020 are as follows: Asset Derivatives Liability Derivatives Net Amounts of Assets and (Liabilities) Presented in the Balance Sheet Balance Sheet Location June 30, Balance Sheet Location June 30, June 30, (in millions) Derivatives designated as cash flow hedges: Commodity derivatives Other current assets $ 40 Accrued liabilities $ — Foreign currency derivatives* Other current assets 26 Other current assets 9 $ 17 Foreign currency derivatives* Accrued liabilities 3 Accrued liabilities 7 (4) Commodity derivatives Other long-term assets 10 Other long-term liabilities — Foreign currency derivatives* Other long-term assets 4 Other long-term assets 1 3 Foreign currency derivatives* Other long-term liabilities 2 Other long-term liabilities 4 (2) Derivatives designated as net investment hedges: Foreign currency derivatives Other current assets 1 Accrued liabilities — Total derivatives designated as hedges $ 86 $ 21 Derivatives not designated: Commodity derivatives Other current assets $ 5 Accrued liabilities $ — Total derivatives not designated as hedges $ 5 $ — Asset Derivatives Liability Derivatives Net Amounts of Assets and (Liabilities) Presented in the Balance Sheet Balance Sheet Location December 31, Balance Sheet Location December 31, December 31, (in millions) Derivatives designated as cash flow hedges: Commodity derivatives Other current assets $ 26 Accrued liabilities $ — Foreign currency derivatives* Other current assets 24 Other current assets 5 $ 19 Foreign currency derivatives* Accrued liabilities 7 Accrued liabilities 13 (6) Commodity derivatives Other long-term assets 9 Other long-term liabilities — Foreign currency derivatives* Other long-term assets 17 Other long-term assets 4 13 Foreign currency derivatives* Other long-term liabilities — Other long-term liabilities 1 (1) Derivatives designated as net investment hedges: Foreign currency derivatives Other current assets — Accrued liabilities 2 Total derivatives designated as hedges $ 83 $ 25 Derivatives not designated: Foreign currency derivatives* Other current assets $ 3 Other current assets $ — 3 Total derivatives not designated as hedges $ 3 $ — * Derivative instruments within this category are subject to master netting arrangements and are presented on a net basis in the consolidated balance sheets in accordance with accounting guidance related to the offsetting of amounts related to certain contracts.
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance	The pre-tax effect of derivative financial instruments in the consolidated statements of operations and consolidated statements of comprehensive income for the three and six months ended June 30, 2021 and 2020 is as follows: Three Months Ended June 30, 2021 Gain (Loss) Recognized in OCI Gain Reclassified from OCI into Income (in millions) Derivatives designated as cash flow hedges: Commodity derivatives $ 17 $ 20 Foreign currency derivatives 16 — Derivatives designated as net investment hedges: Foreign currency derivatives (8) — Total $ 25 $ 20 Gain Recognized in Income (in millions) Derivatives not designated: Foreign currency derivatives $ — Total $ — Three Months Ended June 30, 2020 Gain Recognized in OCI Loss Reclassified from OCI into Income (in millions) Derivatives designated as cash flow hedges: Commodity derivatives $ 28 $ (8) Foreign currency derivatives 26 (14) Derivatives designated as net investment hedges: Foreign currency derivatives — — Total $ 54 $ (22) Loss Recognized in Income (in millions) Derivatives not designated: Foreign currency derivatives $ (2) Total $ (2) Six Months Ended June 30, 2021 Gain (Loss) Recognized in OCI Gain Reclassified from OCI into Income (in millions) Derivatives designated as cash flow hedges: Commodity derivatives $ 51 $ 39 Foreign currency derivatives (7) — Derivatives designated as net investment hedges: Foreign currency derivatives (7) — Total $ 37 $ 39 Gain (Loss) Recognized in Income (in millions) Derivatives not designated: Commodity derivatives $ 1 Foreign currency derivatives (2) Total $ (1) Six Months Ended June 30, 2020 (Loss) Gain Recognized in OCI Loss Reclassified from OCI into Income (in millions) Derivatives designated as cash flow hedges: Commodity derivatives $ (11) $ (11) Foreign currency derivatives (85) (7) Derivatives designated as net investment hedges: Foreign currency derivatives 1 — Total $ (95) $ (18) Loss Recognized in Income (in millions) Derivatives not designated: Foreign currency derivatives $ (4) Total $ (4)

Fair Value Of Financial Instr_2

Fair Value Of Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Assets Measured on Recurring Basis	As of June 30, 2021 and December 31, 2020, Aptiv had the following assets measured at fair value on a recurring basis: Total Quoted Prices in Active Markets Significant Other Observable Inputs Significant Unobservable Inputs (in millions) As of June 30, 2021: Commodity derivatives $ 55 $ — $ 55 $ — Foreign currency derivatives 21 — 21 — Publicly traded equity securities 49 49 — — Total $ 125 $ 49 $ 76 $ — As of December 31, 2020: Commodity derivatives $ 35 $ — $ 35 $ — Foreign currency derivatives 35 — 35 — Total $ 70 $ — $ 70 $ —
Fair Value, Liabilities Measured on Recurring Basis	As of June 30, 2021 and December 31, 2020, Aptiv had the following liabilities measured at fair value on a recurring basis: Total Quoted Prices in Active Markets Significant Other Observable Inputs Significant Unobservable Inputs (in millions) As of June 30, 2021: Foreign currency derivatives $ 6 $ — $ 6 $ — Contingent consideration 52 — — 52 Total $ 58 $ — $ 6 $ 52 As of December 31, 2020: Foreign currency derivatives $ 9 $ — $ 9 $ — Contingent consideration 52 — — 52 Total $ 61 $ — $ 9 $ 52

Other Income, Net (Tables)

Other Income, Net (Tables)	6 Months Ended
	Jun. 30, 2021
Other Income and Expenses [Abstract]
Interest and Other Income	Other income (expense), net included: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (in millions) Interest income $ 2 $ 1 $ 5 $ 4 Loss on modification of debt (1) (4) (1) (4) Components of net periodic benefit cost other than service cost (Note 9) (9) (5) (14) (10) Gain on change in fair value of publicly traded equity securities 9 — 9 — Other, net (1) 2 2 3 Other (expense) income, net $ — $ (6) $ 1 $ (7) During the three months ended June 30, 2021, an unrealized gain of $9 million was recognized for publicly traded equity securities still held as of June 30, 2021. Also, as further discussed in Note 8. Debt, during the three months ended June 30, 2021, Aptiv recorded a loss on debt modification of $1 million in conjunction with the June 2021 amendment to the Credit Agreement.

Acquisitions And Divestitures (

Acquisitions And Divestitures (Tables)	6 Months Ended
	Jun. 30, 2021
Business Acquisition [Line Items]
Schedule of Technology Investments	technology investments, which are classified within other long-term assets in the consolidated balance sheets, as of June 30, 2021 and December 31, 2020: Investment Name Segment June 30, 2021 December 31, 2020 (in millions) Krono-Safe, SAS Advanced Safety and User Experience $ 6 $ 6 Affectiva, Inc. Advanced Safety and User Experience — 15 Innoviz Technologies Advanced Safety and User Experience — 25 LeddarTech, Inc. Advanced Safety and User Experience 10 10 Valens Semiconductor Ltd. Signal and Power Solutions 10 10 Otonomo Technologies Ltd. Advanced Safety and User Experience 37 37 Quanergy Systems, Inc Advanced Safety and User Experience 6 6 Publicly traded equity securities Advanced Safety and User Experience 49 — Other investments Advanced Safety and User Experience 6 4 Total $ 124 $ 113
Dynawave
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The preliminary purchase price and related allocation to the acquired net assets of Dynawave based on their estimated fair values is shown below (in millions): Assets acquired and liabilities assumed Purchase price, cash consideration, net of cash acquired $ 22 Intangible assets $ 7 Other assets, net 5 Identifiable net assets acquired 12 Goodwill resulting from purchase 10 Total purchase price allocation $ 22

Share-Based Compensation (Table

Share-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2021
Share-based Payment Arrangement [Abstract]
Schedule of Share-based Compensation Restricted Stock Units Performance Awards Weighting	Each executive will receive between 0% and 150% of his or her target performance-based award based on the Company’s performance against established company-wide performance metrics, which are: Metric 2020 - 2021 2017 - 2019 Average return on net assets (1) 33% 50% Cumulative net income 33% 25% Relative total shareholder return (2) 33% 25% (1) Average return on net assets is measured by tax-affected operating income divided by average net working capital plus average net property, plant and equipment for each calendar year during the respective performance period. (2) Relative total shareholder return is measured by comparing the average closing price per share of the Company’s ordinary shares for the specified trading days in the fourth quarter of the end of the performance period to the average closing price per share of the Company’s ordinary shares for the specified trading days in the fourth quarter of the year preceding the grant, including dividends, and assessed against a comparable measure of competitor and peer group companies.
Schedule of Executive RSU Grants	The details of the executive grants were as follows: Grant Date RSUs Granted Grant Date Fair Value Time-Based Award Vesting Dates Performance-Based Award Vesting Date (in millions) February 2017 0.80 $ 63 Annually on anniversary of grant date, 2018 - 2020 December 31, 2019 February 2018 0.63 61 Annually on anniversary of grant date, 2019 - 2021 December 31, 2020 February 2019 0.71 62 Annually on anniversary of grant date, 2020 - 2022 December 31, 2021 February 2020 0.75 62 Annually on anniversary of grant date, 2021 - 2023 December 31, 2022 February 2021 0.44 72 Annually on anniversary of grant date, 2022 - 2024 December 31, 2023
Schedule of Share-based Compensation Restricted Stock Units Award Activity	A summary of RSU activity, including award grants, vesting and forfeitures is provided below: RSUs Weighted Average Grant Date Fair Value (in thousands) Nonvested, January 1, 2021 1,786 $ 102.95 Granted 575 160.28 Vested (497) 79.97 Forfeited (89) 110.31 Nonvested, June 30, 2021 1,775 127.61

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	Included below are sales and operating data for Aptiv’s segments for the three and six months ended June 30, 2021 and 2020. Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other (1) Total (in millions) For the Three Months Ended June 30, 2021: Net sales $ 2,846 $ 970 $ (9) $ 3,807 Depreciation and amortization $ 153 $ 44 $ — $ 197 Adjusted operating income $ 277 $ 24 $ — $ 301 Operating income $ 265 $ 20 $ — $ 285 Equity income (loss), net of tax $ 2 $ (55) $ — $ (53) Net income attributable to noncontrolling interest $ 3 $ — $ — $ 3 Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other (1) Total (in millions) For the Three Months Ended June 30, 2020: Net sales $ 1,435 $ 530 $ (5) $ 1,960 Depreciation and amortization $ 143 $ 41 $ — $ 184 Adjusted operating loss $ (143) $ (86) $ — $ (229) Operating loss $ (208) $ (103) $ — $ (311) Equity income (loss), net of tax $ 3 $ (21) $ — $ (18) Net income attributable to noncontrolling interest $ 1 $ — $ — $ 1 Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other (1) Total (in millions) For the Six Months Ended June 30, 2021: Net sales $ 5,868 $ 1,981 $ (19) $ 7,830 Depreciation and amortization $ 302 $ 88 $ — $ 390 Adjusted operating income $ 648 $ 90 $ — $ 738 Operating income $ 637 $ 77 $ — $ 714 Equity income (loss), net of tax $ 5 $ (100) $ — $ (95) Net income attributable to noncontrolling interest $ 8 $ — $ — $ 8 Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other (1) Total (in millions) For the Six Months Ended June 30, 2020: Net sales $ 3,765 $ 1,432 $ (11) $ 5,186 Depreciation and amortization $ 282 $ 82 $ — $ 364 Adjusted operating income (loss) $ 82 $ (80) $ — $ 2 Operating (loss) income (2) $ (9) $ 1,317 $ — $ 1,308 Equity income (loss), net of tax $ 6 $ (22) $ — $ (16) Net loss attributable to noncontrolling interest $ (4) $ — $ — $ (4) (1) Eliminations and Other includes the elimination of inter-segment transactions. (2) Includes a pre-tax gain of $1.4 billion within Advanced Safety and User Experience for the completion of the Motional autonomous driving joint venture. Refer to Note 17. Acquisitions and Divestitures for additional information.
Reconciliation of Segment Adjusted OI to Consolidated Net Income	The reconciliation of Adjusted Operating Income (Loss) to operating income (loss) includes, as applicable, restructuring, other acquisition and portfolio project costs (which includes costs incurred to integrate acquired businesses and to plan and execute product portfolio transformation actions, including business and product acquisitions and divestitures), asset impairments, gains (losses) on business divestitures and other transactions and deferred compensation related to acquisitions. The reconciliations of Adjusted Operating Income (Loss) to net income (loss) attributable to Aptiv for the three and six months ended June 30, 2021 and 2020 are as follows: Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other Total (in millions) For the Three Months Ended June 30, 2021: Adjusted operating income $ 277 $ 24 $ — $ 301 Restructuring (11) (3) — (14) Other acquisition and portfolio project costs (1) (1) — (2) Operating income $ 265 $ 20 $ — 285 Interest expense (38) Income before income taxes and equity loss 247 Income tax expense (28) Equity loss, net of tax (53) Net income 166 Net income attributable to noncontrolling interest 3 Net income attributable to Aptiv $ 163 Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other Total (in millions) For the Three Months Ended June 30, 2020: Adjusted operating loss $ (143) $ (86) $ — $ (229) Restructuring (60) (12) — (72) Other acquisition and portfolio project costs (1) (1) — (2) Asset impairments (4) — — (4) Deferred compensation related to acquisitions — (4) — (4) Operating loss $ (208) $ (103) $ — (311) Interest expense (44) Other expense, net (6) Loss before income taxes and equity loss (361) Income tax benefit 14 Equity loss, net of tax (18) Net loss (365) Net income attributable to noncontrolling interest 1 Net loss attributable to Aptiv $ (366) Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other Total (in millions) For the Six Months Ended June 30, 2021: Adjusted operating income $ 648 $ 90 $ — $ 738 Restructuring (9) (11) — (20) Other acquisition and portfolio project costs (2) (2) — (4) Operating income $ 637 $ 77 $ — 714 Interest expense (78) Other income, net 1 Income before income taxes and equity loss 637 Income tax expense (76) Equity loss, net of tax (95) Net income 466 Net income attributable to noncontrolling interest 8 Net income attributable to Aptiv $ 458 Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other Total (in millions) For the Six Months Ended June 30, 2020: Adjusted operating income (loss) $ 82 $ (80) $ — $ 2 Restructuring (79) (21) — (100) Other acquisition and portfolio project costs (8) (8) — (16) Asset impairments (4) — — (4) Deferred compensation related to acquisitions — (8) — (8) Gain on business divestitures and other transactions — 1,434 — 1,434 Operating (loss) income $ (9) $ 1,317 $ — 1,308 Interest expense (87) Other expense, net (7) Income before income taxes and equity loss 1,214 Income tax benefit 4 Equity loss, net of tax (16) Net income 1,202 Net loss attributable to noncontrolling interest (4) Net income attributable to Aptiv $ 1,206

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Jun. 30, 2021
Disaggregation of Revenue [Abstract]
Disaggregation of Revenue	Revenue generated from Aptiv’s operating segments is disaggregated by primary geographic market in the following tables for the three and six months ended June 30, 2021 and 2020. Information concerning geographic market reflects the manufacturing location. For the Three Months Ended June 30, 2021: Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other Total (in millions) Geographic Market North America $ 1,009 $ 283 $ (1) $ 1,291 Europe, Middle East and Africa 899 442 (3) 1,338 Asia Pacific 866 245 (5) 1,106 South America 72 — — 72 Total net sales $ 2,846 $ 970 $ (9) $ 3,807 For the Three Months Ended June 30, 2020: Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other Total (in millions) Geographic Market North America $ 401 $ 96 $ (1) $ 496 Europe, Middle East and Africa 367 212 (1) 578 Asia Pacific 648 222 (3) 867 South America 19 — — 19 Total net sales $ 1,435 $ 530 $ (5) $ 1,960 For the Six Months Ended June 30, 2021: Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other Total (in millions) Geographic Market North America $ 2,079 $ 596 $ (3) $ 2,672 Europe, Middle East and Africa 1,892 893 (6) 2,779 Asia Pacific 1,759 492 (10) 2,241 South America 138 — — 138 Total net sales $ 5,868 $ 1,981 $ (19) $ 7,830 For the Six Months Ended June 30, 2020: Signal and Power Solutions Advanced Safety and User Experience Eliminations and Other Total (in millions) Geographic Market North America $ 1,406 $ 388 $ (1) $ 1,793 Europe, Middle East and Africa 1,145 655 (4) 1,796 Asia Pacific 1,140 389 (6) 1,523 South America 74 — — 74 Total net sales $ 3,765 $ 1,432 $ (11) $ 5,186

Significant Accounting Polici_4

Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Significant Accounting Policies [Line Items]
Accounts receivable, net of allowance for doubtful accounts of $44 million and $40 million, respectively (Note 2)	$ 2,654		$ 2,654		$ 2,812
Accounts Receivable, Allowance for Credit Loss, Current	44		44		40
Intangible assets, net (excluding goodwill)	1,021		1,021		1,091
Amortization of intangible assets	37	$ 35	74	$ 71
Goodwill	2,547		2,547		2,580
Investment Income, Dividend	4
Other Long-Term Assets
Significant Accounting Policies [Line Items]
Equity investments (Note 17)	75		75		113
Equity Securities, FV-NI	49		49
GM
Significant Accounting Policies [Line Items]
Accounts and Other Receivables	204		204		200
VW
Significant Accounting Policies [Line Items]
Accounts and Other Receivables	183		183		216
Stellantis
Significant Accounting Policies [Line Items]
Accounts and Other Receivables	$ 291		$ 291		$ 352
Customer Concentration Risk | Total Net Sales | Stellantis, GM and VW
Significant Accounting Policies [Line Items]
Percentage of Total Net Sales	29.00%	24.00%	28.00%	29.00%
Customer Concentration Risk | Total Net Sales | GM
Significant Accounting Policies [Line Items]
Percentage of Total Net Sales	8.00%	5.00%	8.00%	8.00%
Customer Concentration Risk | Total Net Sales | VW
Significant Accounting Policies [Line Items]
Percentage of Total Net Sales	10.00%	12.00%	9.00%	10.00%
Customer Concentration Risk | Total Net Sales | Stellantis
Significant Accounting Policies [Line Items]
Percentage of Total Net Sales	11.00%	7.00%	11.00%	11.00%

Inventories (Details)

Inventories (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Productive material	$ 1,096	$ 745
Work-in-process	172	111
Finished goods	533	441
Total	$ 1,801	$ 1,297

Assets Current Assets (Details)

Assets Current Assets (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Value added tax receivable	$ 209	$ 155
Prepaid insurance and other expenses	65	47
Reimbursable engineering costs	181	169
Notes receivable	8	8
Income and other taxes receivable	57	41
Deposits to vendors	7	5
Derivative financial instruments (Note 14)	63	48
Capitalized upfront fees (Note 20)	32	30
Total	$ 622	$ 503

Assets Non Current assets (Deta

Assets Non Current assets (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred income taxes	$ 172	$ 174
Unamortized Revolving Credit Facility debt issuance costs	12	11
Income and other taxes receivable	26	25
Reimbursable engineering costs	171	186
Value added tax receivable	37	29
Equity investments (Note 17)	124	113
Derivative financial instruments (Note 14)	13	22
Capitalized upfront fees (Note 20)	66	86
Other	57	48
Total	$ 678	$ 694

Liabilities Other Liabilities,

Liabilities Other Liabilities, Current (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Other Liabilities Disclosure [Abstract]
Payroll-related obligations	$ 320	$ 293
Employee benefits, including current pension obligations	66	84
Income and other taxes payable	164	177
Warranty obligations (Note 6)	40	51
Restructuring (Note 7)	62	82
Customer deposits	50	62
Derivative financial instruments (Note 14)	4	8
Accrued interest	46	48
MCPS dividends payable	3	3
Operating lease liabilities	99	100
Other	461	477
Total	$ 1,315	$ 1,385

Liabilities Other Liabilities_2

Liabilities Other Liabilities, Non Current (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Other Liabilities Disclosure [Abstract]
Environmental (Note 10)	$ 4	$ 4
Extended disability benefits	5	5
Warranty obligations (Note 6)	8	8
Restructuring (Note 7)	32	43
Payroll-related obligations	11	11
Accrued income taxes	155	156
Deferred income taxes, net	210	207
Derivative financial instruments (Note 14)	2	1
Other	94	105
Total	$ 521	$ 540

Warranty Obligations (Details)

Warranty Obligations (Details) $ in Millions	6 Months Ended
	Jun. 30, 2021USD ($)
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Accrual balance at beginning of period	$ 59
Provision for estimated warranties incurred during the period	15
Provision for changes in estimate for pre-existing warranties	6
Settlements made during the period (in cash or in kind)	(31)
Foreign currency translation and other	(1)
Accrual balance at end of period	48
Minimum [Member] | Product Warranty
Product Warranty Liability [Line Items]
Range of Possible Loss, Portion Not Accrued	0
Maximum [Member] | Product Warranty
Product Warranty Liability [Line Items]
Range of Possible Loss, Portion Not Accrued	$ 10

Restructuring Narrative (Detail

Restructuring Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring	$ 14	$ 72	$ 20	$ 100
Restructuring, Cash Expenditures			(48)	(87)
Restructuring and Related Cost, Expected Cost	20		20
COVID-19 pandemic [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring		60
Advanced Safety and User Experience
Restructuring Cost and Reserve [Line Items]
Restructuring	3	12	11	21
Restructuring and Related Cost, Expected Cost	5		5
Advanced Safety and User Experience | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring	3	12	11	21
Signal and Power Solutions
Restructuring Cost and Reserve [Line Items]
Restructuring	11	60	9	79
Restructuring and Related Cost, Expected Cost	15		15
Signal and Power Solutions | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring	$ 11	60	$ 9	79
EMEA
Restructuring Cost and Reserve [Line Items]
Restructuring		24		35
North America
Restructuring Cost and Reserve [Line Items]
Restructuring		$ 42		$ 51

Restructuring Restructuring Cos

Restructuring Restructuring Costs by Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring	$ 14	$ 72	$ 20	$ 100
Signal and Power Solutions
Restructuring Cost and Reserve [Line Items]
Restructuring	11	60	9	79
Advanced Safety and User Experience
Restructuring Cost and Reserve [Line Items]
Restructuring	$ 3	$ 12	$ 11	$ 21

Restructuring Restructuring Lia

Restructuring Restructuring Liability (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Restructuring Reserve [Roll Forward]
Beginning Balance			$ 125
Restructuring Charges	$ 14	$ 72	20	$ 100
Payments made during the period			(48)	$ (87)
Foreign currency and other			(3)
Ending Balance	94		94
Employee Termination Benefits Liability
Restructuring Reserve [Roll Forward]
Beginning Balance			125
Restructuring Charges			20
Payments made during the period			(48)
Foreign currency and other			(3)
Ending Balance	94		94
Other Exit Costs Liability
Restructuring Reserve [Roll Forward]
Beginning Balance			0
Restructuring Charges			0
Payments made during the period			0
Foreign currency and other			0
Ending Balance	$ 0		$ 0

Debt Outstanding (Details)

Debt Outstanding (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020	Mar. 14, 2019	Sep. 20, 2016	Sep. 15, 2016	Nov. 19, 2015	Mar. 10, 2015	Mar. 03, 2014
Debt Instrument [Line Items]
Finance leases and other	$ 26	$ 28
Total debt	4,047	4,101
Less: current portion	(16)	(90)
Long-term debt	4,031	4,011
Senior Notes | Senior Notes, 3.15% Due 2020
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage						3.15%
Senior Notes | Senior Notes, 4.150% Due 2024
Debt Instrument [Line Items]
Long-term debt	698	698
Debt Instrument, Interest Rate, Stated Percentage								4.15%
Senior Notes | Euro-Denominated Senior Notes, 1.500% Due 2025
Debt Instrument [Line Items]
Long-term debt	832	857
Debt Instrument, Interest Rate, Stated Percentage							1.50%
Senior Notes | Senior Notes, 4.25% Due 2026
Debt Instrument [Line Items]
Long-term debt	648	648
Debt Instrument, Interest Rate, Stated Percentage						4.25%
Senior Notes | Euro-denominated Senior Notes, 1.600% Due 2028
Debt Instrument [Line Items]
Long-term debt	593	612
Debt Instrument, Interest Rate, Stated Percentage					1.60%
Senior Notes | Senior Notes, 4.35% Due 2029
Debt Instrument [Line Items]
Long-term debt	298	297
Debt Instrument, Interest Rate, Stated Percentage			4.35%
Senior Notes | Senior Notes, 4.400% Due 2046
Debt Instrument [Line Items]
Long-term debt	296	296
Debt Instrument, Interest Rate, Stated Percentage				4.40%
Senior Notes | Senior Notes, 5.40% Due 2049
Debt Instrument [Line Items]
Long-term debt	345	345
Debt Instrument, Interest Rate, Stated Percentage			5.40%
Loans Payable | Tranche A Term Loan, Due 2026
Debt Instrument [Line Items]
Long-term debt	$ 311	$ 320

Debt Credit Agreement (Details)

Debt Credit Agreement (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Mar. 31, 2021	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Line of Credit Facility [Line Items]
Letters of Credit Outstanding, Amount		$ 3		$ 2
Payments of Financing Costs		6	$ 18
Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Line of Credit Facility, Additional Borrowing Capacity		1,000
Letters of Credit Outstanding, Amount		$ 1
Amended and Restated Credit Agreement | JPMorgan Chase Bank, N.A.
Line of Credit Facility [Line Items]
Covenant Compliance, Maximum Ratio of Indebtedness to EBITDA		350.00%
Debt Instrument, Covenant Compliance, Maximum Ratio of Indebtedness to EBITDA, Covenant Relief Period		450.00%
Line of Credit Increase (Decrease) In Percentage Usage Fee		0.04%
Revolving Credit Facility Increase (Decrease) In Percentage Commitment Fee		0.01%
Debt Instrument, Covenant Compliance, Maximum Ratio of Indebtedness to EBITDA, Following Material Acquisition		400.00%
Revolving Credit Facility | Revolving Credit Facility | JPMorgan Chase Bank, N.A.
Line of Credit Facility [Line Items]
Revolving Credit Facility, Maximum Borrowing Capacity		$ 2,000
Revolving Credit Facility | Revolving Credit Facility | JPMorgan Chase Bank, N.A. | LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.10%	1.10%
Revolving Credit Facility | Revolving Credit Facility | JPMorgan Chase Bank, N.A. | Administrative Agents Alternate Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.10%	0.10%
Tranche A Term Loan, Due 2026 | JPMorgan Chase Bank, N.A.
Line of Credit Facility [Line Items]
Tranche A Term Loan Increase (Decrease) In Percentage Usage Fee, Sustainability Linked Adjustment		0.02%
Tranche A Term Loan, Due 2026 | JPMorgan Chase Bank, N.A. | Loans Payable | LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.25%	1.125%
Rate effective		1.25%
Other Long-term Debt		$ 313
Tranche A Term Loan, Due 2026 | JPMorgan Chase Bank, N.A. | Loans Payable | Administrative Agents Alternate Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.25%	0.125%
Extended Revolver | Revolving Credit Facility | JPMorgan Chase Bank, N.A. | LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.40%
Extended Revolver | Revolving Credit Facility | JPMorgan Chase Bank, N.A. | Administrative Agents Alternate Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.40%
Extended Tranche A, Due 2022 | JPMorgan Chase Bank, N.A. | Loans Payable | LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.75%
Extended Tranche A, Due 2022 | JPMorgan Chase Bank, N.A. | Loans Payable | Administrative Agents Alternate Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.75%

Debt Senior Unsecured Notes (De

Debt Senior Unsecured Notes (Details) - Senior Notes € in Millions	Mar. 14, 2019USD ($)	Sep. 20, 2016USD ($)	Sep. 15, 2016USD ($)	Nov. 19, 2015USD ($)	Mar. 10, 2015USD ($)	Mar. 03, 2014USD ($)	Sep. 15, 2016EUR (€)	Mar. 10, 2015EUR (€)	Feb. 14, 2013USD ($)	May 17, 2011USD ($)
Senior Notes, 5.875% Due 2019
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage										5.875%
Debt Instrument, Face Amount										$ 500,000,000
Senior Notes, 6.125% Due 2021
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage										6.125%
Debt Instrument, Face Amount										$ 500,000,000
Senior Notes, 5.000% Due 2023
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage									5.00%
Debt Instrument, Face Amount									$ 800,000,000
Senior Notes, 4.150% Due 2024
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage						4.15%
Payments of Debt Issuance Costs						$ 6,000,000
Debt Instrument, Price						99.649%
Debt Instrument, Interest Rate, Effective Percentage						4.193%
Debt Instrument, Face Amount						$ 700,000,000
Euro-Denominated Senior Notes, 1.500% Due 2025
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage								1.50%
Payments of Debt Issuance Costs					$ 5,000,000
Debt Instrument, Price								99.54%
Debt Instrument, Interest Rate, Effective Percentage								1.55%
Euro-Denominated Senior Notes, 1.500% Due 2025 | Designated as Hedging Instrument | Net Investment Hedging
Debt Instrument [Line Items]
Debt Instrument, Face Amount | €								€ 700
2015 Senior Notes
Debt Instrument [Line Items]
Payments of Debt Issuance Costs				$ 8,000,000
Debt Instrument, Face Amount				$ 1,300,000,000
Senior Notes, 3.15% Due 2020
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				3.15%
Debt Instrument, Price				99.784%
Debt Instrument, Interest Rate, Effective Percentage				3.197%
Debt Instrument, Face Amount				$ 650,000,000
Senior Notes, 4.25% Due 2026
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				4.25%
Debt Instrument, Price				99.942%
Debt Instrument, Interest Rate, Effective Percentage				4.256%
Debt Instrument, Face Amount				$ 650,000,000
Euro-denominated Senior Notes, 1.600% Due 2028
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage							1.60%
Payments of Debt Issuance Costs			$ 4,000,000
Debt Instrument, Price							99.881%
Debt Instrument, Interest Rate, Effective Percentage							1.611%
Euro-denominated Senior Notes, 1.600% Due 2028 | Designated as Hedging Instrument | Net Investment Hedging
Debt Instrument [Line Items]
Debt Instrument, Face Amount | €							€ 500
Senior Notes, 4.400% Due 2046
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.40%
Payments of Debt Issuance Costs		$ 3,000,000
Debt Instrument, Price		99.454%
Debt Instrument, Interest Rate, Effective Percentage		4.433%
Debt Instrument, Face Amount		$ 300,000,000
2019 Senior Notes [Member]
Debt Instrument [Line Items]
Payments of Debt Issuance Costs	$ 7,000,000
Debt Instrument, Face Amount	$ 650,000,000
Senior Notes, 4.35% Due 2029
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.35%
Debt Instrument, Price	99.879%
Debt Instrument, Interest Rate, Effective Percentage	4.365%
Debt Instrument, Face Amount	$ 300,000,000
Senior Notes, 5.40% Due 2049
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.40%
Debt Instrument, Price	99.558%
Debt Instrument, Interest Rate, Effective Percentage	5.43%
Debt Instrument, Face Amount	$ 350,000,000

Debt Other Financing (Details)

Debt Other Financing (Details) € in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2021USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2021EUR (€)	Dec. 31, 2020USD ($)	Dec. 31, 2020EUR (€)
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	$ 3			$ 2
Finance leases and other	26			$ 28
Interest Paid, Including Capitalized Interest, Operating and Investing Activities	$ 75	$ 84
European Factoring Program | Accounts Receivable Factoring
Debt Instrument [Line Items]
Maximum Funding From Factoring Program | €					€ 300
New Maximum Funding From Factoring Program | €			€ 450
New European Factoring Program
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	0.20%		0.20%
New European Factoring Program | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
New European Factoring Program | EURIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%

Pension Benefits Narrative (Det

Pension Benefits Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Retirement Benefits [Abstract]
Defined Benefit Pension Plan, Postemployment Benefit Period	5 years
Liability, Other Retirement Benefits	$ 1	$ 1

Pension Benefits Net Periodic B

Pension Benefits Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 5	$ 5	$ 10	$ 10
Interest cost	5	5	10	11
Expected return on plan assets	(5)	(4)	(10)	(9)
Curtailment loss	5	0	5	0
Amortization of actuarial losses	3	3	8	7
Net periodic benefit cost	13	9	23	19
United States
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	0
Interest cost	0	0	0	0
Expected return on plan assets	0	0	0	0
Curtailment loss	0	0	0	0
Amortization of actuarial losses	1	1	1	1
Net periodic benefit cost	$ 1	$ 1	$ 1	$ 1

Commitments And Contingencies B

Commitments And Contingencies Brazil Matters (Details) - Brazil $ in Millions	6 Months Ended
	Jun. 30, 2021USD ($)
Loss Contingencies [Line Items]
Brazil Loss Contingency, Claims asserted against Aptiv	$ 110
Loss Contingency Accrual, at Carrying Value	20
Minimum [Member]
Loss Contingencies [Line Items]
Range of Possible Loss, Portion Not Accrued	0
Maximum [Member]
Loss Contingencies [Line Items]
Range of Possible Loss, Portion Not Accrued	$ 90

Commitments And Contingencies E

Commitments And Contingencies Environmental Matters (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Environmental Exit Cost [Line Items]
Accrued Environmental Loss Contingencies, Noncurrent	$ 4	$ 4
Other Long-Term Liabilities
Environmental Exit Cost [Line Items]
Accrual for Environmental Loss Contingencies	$ 4	$ 4

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Tax Examination [Line Items]
Income tax expense (benefit)	$ 28	$ (14)	$ 76	$ (4)
Effective tax rate	11.00%	4.00%	12.00%	0.00%
Income tax (benefit) expense associated with discrete items	$ (3)	$ (3)	$ (4)	$ (6)
Cash taxes paid			$ 93	$ 54

2020 Public Equity Offering (De

2020 Public Equity Offering (Details) $ / shares in Units, $ in Millions	Jun. 12, 2020USD ($)d$ / sharesshares	Jun. 30, 2021USD ($)$ / shares	Jun. 30, 2020USD ($)	Jun. 15, 2023shares	Dec. 31, 2020$ / shares
Preferred Stock, Shares Issued | shares	11,500,000
Preferred Stock, Dividend Rate, Percentage	5.50%
Preferred shares, par value per share | $ / shares	$ 0.01	$ 0.01			$ 0.01
Proceeds from the public offering of preferred shares, net of issuance costs		$ 0	$ 1,115
Preferred Stock, Liquidation Preference Per Share | $ / shares	$ 100
Common Stock, Shares, Issued | shares	15,100,000
Shares Issued, Price Per Share | $ / shares	$ 75.91
Preferred Stock, Dividend Rate, Per-Dollar-Amount | $ / shares	$ 5.50
Minimum [Member] | Forecast [Member]
Convertible Preferred Stock, Shares Issued upon Conversion | shares				1.0754
Maximum [Member] | Forecast [Member]
Convertible Preferred Stock, Shares Issued upon Conversion | shares				1.3173
Ordinary Shares
Proceeds from Issuance or Sale of Equity	$ 1,115
Payments of Stock Issuance Costs	35
Preferred Stock
Proceeds from the public offering of preferred shares, net of issuance costs	1,115
Payments of Stock Issuance Costs	$ 35
Debt Instrument, Convertible, Threshold Consecutive Trading Days | d	20

Shareholders' Equity And Net _3

Shareholders' Equity And Net Income Per Share Weighted Average Shares Outstanding and Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Numerator, basic:
Net income (loss) attributable to ordinary shareholders	$ 147	$ (369)	$ 426	$ 1,203
Net income (loss) attributable to Aptiv	163	(366)	458	1,206
Mandatory convertible preferred share dividends (Note 12)	$ 16	$ 3	$ 32	$ 3
Denominator:
Weighted average number of basic shares outstanding	270,490	258,030	270,400	256,770
Dilutive shares related to restricted stock units (“RSUs”)	570	180	700	250
Weighted average MCPS Converted Shares	0	0	0	1,570
Weighted average ordinary shares outstanding, including dilutive shares	271,060	258,210	271,100	258,590
Basic net income per share:
Basic net income (loss) per share attributable to ordinary shareholders	$ 0.54	$ (1.43)	$ 1.58	$ 4.69
Diluted net income per share (Note 12):
Diluted net income (loss) per share attributable to ordinary shareholders	$ 0.54	$ (1.43)	$ 1.57	$ 4.66
Antidilutive securities share impact	12,370	3,140	12,370
Mandatory convertible preferred share dividends (Note 12)	$ 16	$ 3	$ 32	$ 3
Preferred Stock
Numerator, basic:
Mandatory convertible preferred share dividends (Note 12)			32	0
Mandatory convertible preferred share dividends (Note 12)			$ 32	$ 0

Shareholders' Equity And Net _4

Shareholders' Equity And Net Income Per Share Share Repurchase Program (Details) - USD ($) $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2021
Share Repurchase Program [Line Items]
Stock Repurchased During Period, in shares	1,059,075
Stock Repurchased, Average Price per Share	$ 53.73
Stock Repurchased During Period, Value	$ 57
Share Repurchase Program April 2016
Share Repurchase Program [Line Items]
Stock Repurchase Program, Authorized Amount		$ 1,500
Stock Repurchase Program, Remaining Authorized Repurchase Amount		13
Share Repurchase Program January 2019 [Member]
Share Repurchase Program [Line Items]
Stock Repurchase Program, Authorized Amount		$ 2,000

Shareholders' Equity And Net _5

Shareholders' Equity And Net Income Per Share Dividends (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended						6 Months Ended		12 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Mandatory convertible preferred share cumulative dividends	$ 16				$ 3		$ 32	$ 3
Ordinary Shares
Cash dividends per ordinary share	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0.22	$ 0		$ 0.22
Payments of Ordinary Share Cash Dividends	$ 0	$ 0	$ 0	$ 0	$ 0	$ 56	$ 0		$ 56
Preferred Stock
Preferred Stock, Dividends, Per Share, Cash Paid	$ 1.38	$ 1.38	$ 1.38	$ 1.42	$ 0	$ 0	$ 2.76		$ 2.80
Mandatory convertible preferred share cumulative dividends	$ 16	$ 16	$ 16	$ 16	$ 0	$ 0	$ 32		$ 32

Changes in Accumulated Other _3

Changes in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period			$ (545)
Accumulated other comprehensive income (loss), end of period	$ (566)	$ (894)	(566)	$ (894)
Designated as Hedging Instrument | Net Investment Hedging
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Gain (loss) on net investment hedge, net of tax	19	(8)	44	(2)
Foreign currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period	(536)	(723)	(445)	(597)
Aggregate adjustment for the period (1)	42	18	(49)	(108)
Accumulated other comprehensive income (loss), end of period	(494)	(705)	(494)	(705)
Unrealized gains (losses) on derivatives
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period	33	(140)	40	13
Other comprehensive income (loss) before reclassifications (net of tax effect)	25	54	37	(95)
Reclassification to income (net of tax effect)	(20)	22	(39)	18
Accumulated other comprehensive income (loss), end of period	38	(64)	38	(64)
Net tax effect of Other comprehensive income before reclassifications	0	0	0	0
Net tax effect of Reclassification Adjustment from AOCI on Derivatives	0	0	0	0
Pension and postretirement plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period	(133)	(128)	(140)	(135)
Other comprehensive income (loss) before reclassifications (net of tax effect)	15	0	18	4
Reclassification to income (net of tax effect)	8	3	12	6
Accumulated other comprehensive income (loss), end of period	(110)	(125)	(110)	(125)
Net tax effect of Other comprehensive income before reclassifications	1	0	(1)	(1)
Net tax effect of Reclassification Adjustment from AOCI, Pension and Other Postretirement Plans	$ (1)	$ (1)	$ (2)	$ (2)

Changes in Accumulated Other _4

Changes in Accumulated Other Comprehensive Income AOCI Reclassifications (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales		$ 3,205	$ 1,947	$ 6,501	$ 4,672
Income tax (expense) benefit		(28)	14	(76)	4
Net income (loss)		166	(365)	466	1,202
Net income attributable to noncontrolling interest		(3)	(1)	(8)	4
Net income attributable to Aptiv		163	(366)	458	1,206
Amount Reclassified from Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income attributable to Aptiv		12	(25)	27	(24)
Amount Reclassified from Accumulated Other Comprehensive Income | Unrealized gains (losses) on derivatives
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) before income taxes		20	(22)	39	(18)
Income tax (expense) benefit		0	0	0	0
Net income (loss)		20	(22)	39	(18)
Net income attributable to noncontrolling interest		0	0	0	0
Net income attributable to Aptiv		20	(22)	39	(18)
Amount Reclassified from Accumulated Other Comprehensive Income | Unrealized gains (losses) on derivatives | Commodity derivatives
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales		(20)	(8)	39	(11)
Amount Reclassified from Accumulated Other Comprehensive Income | Unrealized gains (losses) on derivatives | Foreign currency derivatives
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales		0	(14)	0	(7)
Amount Reclassified from Accumulated Other Comprehensive Income | Pension and postretirement plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Actuarial losses	[1]	(4)	(4)	(9)	(8)
Income (loss) before income taxes		(9)	(4)	(14)	(8)
Income tax (expense) benefit		1	1	2	2
Net income (loss)		(8)	(3)	(12)	(6)
Net income attributable to noncontrolling interest		0	0	0	0
Net income attributable to Aptiv		(8)	(3)	(12)	(6)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax		$ (5)	$ 0	$ (5)	$ 0
[1]	These accumulated other comprehensive loss components are included in the computation of net periodic pension cost (see Note 9. Pension Benefits for additional details).

Derivatives And Hedging Activ_3

Derivatives And Hedging Activities Cash Flow Hedges (Details) lb in Thousands, € in Millions, ¥ in Millions, zł in Millions, $ in Millions, $ in Millions	12 Months Ended
	Jun. 30, 2023USD ($)	Jun. 30, 2022USD ($)	Jun. 30, 2021USD ($)lb	Jun. 30, 2021MXN ($)lb	Jun. 30, 2021CNY (¥)lb	Jun. 30, 2021EUR (€)lb	Jun. 30, 2021PLN (zł)lb
Derivative [Line Items]
Net derivative gains (losses) included in accumulated other comprehensive income, before tax			$ (68)
Net derivative gains (losses) included in accumulated other comprehensive income, after tax			$ (68)
Cash Flow Hedging | Copper
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount | lb			74,033	74,033	74,033	74,033	74,033
Derivative, Notional Amount			$ 325
Cash Flow Hedging | Foreign currency derivatives | Mexican Peso
Derivative [Line Items]
Derivative, Notional Amount			750	$ 14,868
Cash Flow Hedging | Foreign currency derivatives | Chinese Yuan Renminbi
Derivative [Line Items]
Derivative, Notional Amount			380		¥ 2,458
Cash Flow Hedging | Foreign currency derivatives | Polish Zloty
Derivative [Line Items]
Derivative, Notional Amount			145				zł 542
Cash Flow Hedging | Foreign currency derivatives | Euro Member Countries, Euro
Derivative [Line Items]
Derivative, Notional Amount			225			€ 187
Cash Flow Hedging | Foreign currency derivatives | Hungary, Forint
Derivative [Line Items]
Derivative, Notional Amount			$ 35				zł 9,743
Forecast [Member] | Cost of Sales [Member]
Derivative [Line Items]
Derivative Instruments, (Gain) Loss Reclassified from Accumulated OCI into Income, Effective Portion	$ 10	$ 58

Derivatives And Hedging Activ_4

Derivatives And Hedging Activities Net Investment Hedges (Details) € in Millions, ¥ in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2021USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2021CNY (¥)	Dec. 31, 2020USD ($)	Sep. 15, 2016EUR (€)	Mar. 10, 2015EUR (€)
Derivative [Line Items]
Settlement of derivatives			$ (9)	$ 1
Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ 0	$ (2)	(1)	(4)
Net Investment Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Gain (loss) on net investment hedge, net of tax	(19)	8	(44)	2
Net Investment Hedging | Designated as Hedging Instrument | Euro-Denominated Senior Notes, 1.500% Due 2025 | Senior Notes
Derivative [Line Items]
Debt instrument designated as net investment hedge | €								€ 700
Net Investment Hedging | Designated as Hedging Instrument | Euro-denominated Senior Notes, 1.600% Due 2028 | Senior Notes
Derivative [Line Items]
Debt instrument designated as net investment hedge | €							€ 500
Net Investment Hedging | Designated as Hedging Instrument | Euro-Denominated Senior Notes, 1.500% Due 2025 and Euro-Denominated Senior Notes, 1.600% Due 2028 | Senior Notes
Derivative [Line Items]
Gain (loss) on net investment hedge, net of tax	19	$ 8	44	2
Net investment hedge gains (losses) included in accumulated other comprehensive income	109		109			$ (153)
Foreign exchange forward | China, Yuan Renminbi | Net Investment Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Derivative, Notional Amount	$ 410		410		¥ 2,600
Settlement of derivatives			$ (9)	$ (1)

Derivatives And Hedging Activ_5

Derivatives And Hedging Activities Derivatives Not Designated as Hedges (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Derivative [Line Items]
Settlement of derivatives			$ (9)	$ 1
Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ 0	$ (2)	$ (1)	$ (4)

Derivatives And Hedging Activ_6

Derivatives And Hedging Activities Fair Value of Derivative Instruments in the Balance Sheet (Details) - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Document Period End Date		Jun. 30, 2021
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Gross amount of recognized asset derivatives		$ 86	$ 83
Gross amount of recognized liability derivatives		21	25
Designated as Hedging Instrument | Other Current Assets
Derivatives, Fair Value [Line Items]
Gross amount of recognized asset derivatives		1	0
Designated as Hedging Instrument | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Gross amount of recognized liability derivatives		0	2
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Gross amount of recognized asset derivatives		5	3
Gross amount of recognized liability derivatives		0	0
Not Designated as Hedging Instrument | Commodity derivatives | Other Assets, Current
Derivatives, Fair Value [Line Items]
Gross amount of recognized asset derivatives		5
Gross amount of recognized liability derivatives		0
Not Designated as Hedging Instrument | Foreign currency derivatives | Other Current Assets
Derivatives, Fair Value [Line Items]
Gross amount of recognized asset derivatives			3
Gross amount of recognized liability derivatives			0
Net amount of derivative liability presented in the Balance Sheet			(3)
Cash Flow Hedging | Designated as Hedging Instrument | Commodity derivatives | Other Current Assets
Derivatives, Fair Value [Line Items]
Gross amount of recognized asset derivatives		40	26
Cash Flow Hedging | Designated as Hedging Instrument | Commodity derivatives | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Gross amount of recognized liability derivatives		0	0
Cash Flow Hedging | Designated as Hedging Instrument | Commodity derivatives | Other Long-Term Assets
Derivatives, Fair Value [Line Items]
Gross amount of recognized asset derivatives		10	9
Cash Flow Hedging | Designated as Hedging Instrument | Commodity derivatives | Other Long-Term Liabilities
Derivatives, Fair Value [Line Items]
Gross amount of recognized liability derivatives		0	0
Cash Flow Hedging | Designated as Hedging Instrument | Foreign currency derivatives | Other Current Assets
Derivatives, Fair Value [Line Items]
Gross amount of recognized asset derivatives	[1]	26	24
Gross amount of recognized liability derivatives	[1]	9	5
Net amount of derivative asset presented in the Balance Sheet	[1]	17	19
Cash Flow Hedging | Designated as Hedging Instrument | Foreign currency derivatives | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Gross amount of recognized asset derivatives	[1]	3	7
Gross amount of recognized liability derivatives	[1]	7	13
Net amount of derivative liability presented in the Balance Sheet	[1]	(4)	(6)
Cash Flow Hedging | Designated as Hedging Instrument | Foreign currency derivatives | Other Long-Term Assets
Derivatives, Fair Value [Line Items]
Gross amount of recognized asset derivatives	[1]	4	17
Gross amount of recognized liability derivatives	[1]	1	4
Net amount of derivative asset presented in the Balance Sheet	[1]	3	13
Cash Flow Hedging | Designated as Hedging Instrument | Foreign currency derivatives | Other Long-Term Liabilities
Derivatives, Fair Value [Line Items]
Gross amount of recognized asset derivatives	[1]	2	0
Gross amount of recognized liability derivatives	[1]	4	1
Net amount of derivative liability presented in the Balance Sheet	[1]	$ (2)	$ (1)
[1]	Derivative instruments within this category are subject to master netting arrangements and are presented on a net basis in the consolidated balance sheets in accordance with accounting guidance related to the offsetting of amounts related to certain contracts.

Derivatives And Hedging Activ_7

Derivatives And Hedging Activities Effect of Derivative Instruments in Consolidated Statement of Operations (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	$ 25	$ 54	$ 37	$ (95)
Derivative Instruments, (Gain) Loss Reclassified from Accumulated OCI into Income, Effective Portion	20	(22)	39	(18)
Designated as Hedging Instrument | Cash Flow Hedging | Commodity derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	17	28	51	(11)
Derivative Instruments, (Gain) Loss Reclassified from Accumulated OCI into Income, Effective Portion	20	(8)	39	(11)
Designated as Hedging Instrument | Cash Flow Hedging | Foreign currency derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	16	26	(7)	(85)
Derivative Instruments, (Gain) Loss Reclassified from Accumulated OCI into Income, Effective Portion	0	(14)	0	(7)
Designated as Hedging Instrument | Net Investment Hedging | Foreign currency derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	(8)	0	(7)	1
Derivative Instruments, (Gain) Loss Reclassified from Accumulated OCI into Income, Effective Portion	0	0	0	0
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	(2)	(1)	(4)
Not Designated as Hedging Instrument | Commodity derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net			1
Not Designated as Hedging Instrument | Foreign currency derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ 0	$ (2)	$ (2)	$ (4)

Fair Value Of Financial Instr_3

Fair Value Of Financial Instruments Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Fair Value, Net	$ 70	$ 61
Total debt, recorded amount	4,047	4,101
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability	52	52
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt, fair value	4,501	4,490
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability	$ 0	$ 0

Fair Value Of Financial Instr_4

Fair Value Of Financial Instruments Unobservable Inputs Reconciliation (Details) - USD ($) $ in Millions	Jun. 30, 2021	Mar. 31, 2021	Mar. 31, 2020	Jun. 30, 2019
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Escrow Deposit	$ 52
Escrow Deposit Year 1 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Escrow Deposit				$ 16
Escrow Deposit Year 2 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Escrow Deposit			$ 16
Escrow Deposit Year 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Escrow Deposit		$ 20

Fair Value Of Financial Instr_5

Fair Value Of Financial Instruments Fair Value of Assets and Liabilities (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges	$ 4	$ 4
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI			$ 49
Assets, Fair Value Disclosure			125	$ 70
Contingent consideration liability			52	52
Financial and Nonfinancial Liabilities, Fair Value Disclosure			58	61
Fair Value, Measurements, Recurring | Commodity derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset			55	35
Fair Value, Measurements, Recurring | Foreign currency derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset			21	35
Derivative Liability			6	9
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI			49
Assets, Fair Value Disclosure			49	0
Contingent consideration liability			0	0
Financial and Nonfinancial Liabilities, Fair Value Disclosure			0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Commodity derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset			0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Foreign currency derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset			0	0
Derivative Liability			0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI			0
Assets, Fair Value Disclosure			76	70
Contingent consideration liability			0	0
Financial and Nonfinancial Liabilities, Fair Value Disclosure			6	9
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Commodity derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset			55	35
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Foreign currency derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset			21	35
Derivative Liability			6	9
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI			0
Assets, Fair Value Disclosure			0	0
Contingent consideration liability			52	52
Financial and Nonfinancial Liabilities, Fair Value Disclosure			52	52
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Commodity derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset			0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Foreign currency derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset			0	0
Derivative Liability			$ 0	$ 0
Cost of Sales [Member] | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges	$ 4

Other Income, Net Table (Detail

Other Income, Net Table (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Interest Income	$ 2	$ 1	$ 5	$ 4
Loss on modification of debt	(1)	(4)	(1)	(4)
Components of net periodic benefit cost other than service cost (Note 9)	(9)	(5)	(14)	(10)
Gain on change in fair value of publicly traded equity securities	9	0	9	0
Other, net	(1)	2	2	3
Other income (expense), net	0	$ (6)	$ 1	$ (7)
Equity Securities, FV-NI, Unrealized Gain (Loss)	$ 9

Acquisitions And Divestitures A

Acquisitions And Divestitures Acquisition of Ulti-Mate (Details) - USD ($) $ in Millions	Apr. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill		$ 2,547	$ 2,580
Ulti-Mate
Business Acquisition [Line Items]
Business Combination, Consideration Transferred	$ 45
Intangible assets	17
Other assets purchased and liabilities assumed, net	5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	22
Goodwill	23
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	$ 45
Ulti-Mate | Customer Relationships [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	9 years

Acquisitions And Divestitures_2

Acquisitions And Divestitures Acquisition of Dynawave (Details) - USD ($) $ in Millions	Aug. 04, 2020	Jun. 30, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill		$ 2,547	$ 2,580
Dynawave
Business Acquisition [Line Items]
Business Combination, Consideration Transferred	$ 22
Intangible assets	7
Other assets purchased and liabilities assumed, net	5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	12
Goodwill	10
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	$ 22
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Dynawave | Customer Relationships [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	9 years

Acquisitions And Divestitures T

Acquisitions And Divestitures Technology Investments (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Equity investments (Note 17)	$ 124	$ 113
Other Long-Term Assets
Business Acquisition [Line Items]
Equity investments (Note 17)	75	113
Equity Securities, FV-NI	49
Advanced Safety and User Experience
Business Acquisition [Line Items]
Equity Securities, FV-NI		0
Krono-Safe [Member] | Advanced Safety and User Experience
Business Acquisition [Line Items]
Equity investments (Note 17)	6	6
Affectiva [Member] | Advanced Safety and User Experience
Business Acquisition [Line Items]
Equity investments (Note 17)	0	15
Innoviz Technologies | Advanced Safety and User Experience
Business Acquisition [Line Items]
Equity investments (Note 17)	0	25
Equity Securities, FV-NI	34
Leddartech | Advanced Safety and User Experience
Business Acquisition [Line Items]
Equity investments (Note 17)	10	10
Valens Semiconductor | Signal and Power Solutions
Business Acquisition [Line Items]
Equity investments (Note 17)	10	10
Otonomo | Advanced Safety and User Experience
Business Acquisition [Line Items]
Equity investments (Note 17)	37	37
Quanergy | Advanced Safety and User Experience
Business Acquisition [Line Items]
Equity investments (Note 17)	6	6
Other [Member] | Advanced Safety and User Experience
Business Acquisition [Line Items]
Equity investments (Note 17)	6	$ 4
Smart Eye | Advanced Safety and User Experience
Business Acquisition [Line Items]
Equity Securities, FV-NI	$ 15

Acquisitions And Divestitures_3

Acquisitions And Divestitures Autonomous Driving Joint Venture (Details) $ / shares in Units, $ in Millions	Mar. 26, 2020USD ($)	Jun. 30, 2021USD ($)	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Jun. 30, 2021USD ($)	Jun. 30, 2020USD ($)$ / shares	Dec. 31, 2020USD ($)
Business Acquisition [Line Items]
Costs and Expenses		$ 3,522	$ 2,271		$ 7,116	$ 3,878
Equity Method Investments		$ 1,908			1,908		$ 2,011
Gain on autonomous driving joint venture					$ 0	1,434
Autonomous Driving Joint Venture [Member]
Business Acquisition [Line Items]
Operating Lease, Weighted Average Remaining Lease Term		8 years			8 years
Lease Income		$ 1	1		$ 2	$ 1
Autonomous Driving Joint Venture [Member]
Business Acquisition [Line Items]
Number of Employees Contributed to Joint Venture	700
Equity Method Investment, Ownership Percentage	50.00%
Costs and Expenses				$ 180
Equity Method Investments	$ 2,000
Gain on autonomous driving joint venture		$ 0	$ 0		$ 0
Disposal Group Not Discontinued Operation Gain Loss on Disposal Net of Tax per Share | $ / shares						$ (5.57)
Business Exit Costs	$ 22
Autonomous Driving Joint Venture [Member] | Hyundai [Member]
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 1,600
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Autonomous Driving Joint Venture [Member]
Business Acquisition [Line Items]
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, before Income Tax						$ (41)

Share-Based Compensation Long T

Share-Based Compensation Long Term Incentive Plan (Details) - USD ($) $ in Millions

Apr. 30, 2021

Apr. 29, 2021

Apr. 23, 2020

Apr. 22, 2020

Apr. 25, 2019

Feb. 28, 2021

Feb. 29, 2020

Feb. 28, 2019

Feb. 28, 2018

Feb. 28, 2017

Jun. 30, 2021

Jun. 30, 2020

Dec. 31, 2020

Apr. 23, 2015

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Document Period End Date

Jun. 30, 2021

PLC Long Term Incentive Plan

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Maximum Shares Available for Grant under PLC LTIP

25,665,448

PLC Long Term Incentive Plan | Minimum [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Performance-Based Awards Payout % Range

0.00%

PLC Long Term Incentive Plan | Maximum [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Performance-Based Awards Payout % Range

150.00%

PLC Long Term Incentive Plan | Restricted Stock Units (RSUs)

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

RSU's Granted

575,000

Grant Date Fair Value

$ 72

$ 62

$ 62

$ 61

$ 63

Time-Based Awards % Granted For Officers

40.00%

25.00%

Time-Based Awards % Granted For Executives

50.00%

Performance-Based Awards % Granted For Officers

60.00%

75.00%

Performance-Based Awards % Granted For Executives

50.00%

PLC Long Term Incentive Plan | Restricted Stock Units (RSUs) | Board of Directors

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

RSU's Granted

17,589

48,745

20,765

Grant Date Fair Value

$ 3

$ 3

$ 2

RSU's Issued in Period, Gross

41,896

23,816

Fair Value of RSUs Vested in Period

$ 6

$ 1

RSU's, Used to Pay Witholding Taxes

(6,849)

(2,041)

PLC Long Term Incentive Plan | Restricted Stock Units (RSUs) | Executives | 2017 Grant

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

RSU's Granted

800,000

PLC Long Term Incentive Plan | Restricted Stock Units (RSUs) | Executives | 2018 Grant

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

RSU's Granted

630,000

PLC Long Term Incentive Plan | Restricted Stock Units (RSUs) | Executives | 2019 Grant

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

RSU's Granted

710,000

PLC Long Term Incentive Plan | Restricted Stock Units (RSUs) | Executives | 2020 Grant

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

RSU's Granted

750,000

PLC Long Term Incentive Plan | Restricted Stock Units (RSUs) | Executives | 2021 Grant

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

RSU's Granted

440,000

PLC Long Term Incentive Plan | Restricted Stock Units (RSUs) | Executives | Time-Based

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

RSU's Issued in Period, Gross

449,426

468,240

Fair Value of RSUs Vested in Period

$ 67

$ 37

RSU's, Used to Pay Witholding Taxes

177,825

181,495

PLC Long Term Incentive Plan | Restricted Stock Units (RSUs) | Executives | Performance-Based | 2017 Grant

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

RSU's Issued in Period, Gross

580,390

Fair Value of RSUs Vested in Period

$ 45

RSU's, Used to Pay Witholding Taxes

243,080

PLC Long Term Incentive Plan | Restricted Stock Units (RSUs) | Executives | Performance-Based | 2018 Grant

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

RSU's Issued in Period, Gross

288,074

Fair Value of RSUs Vested in Period

$ 43

RSU's, Used to Pay Witholding Taxes

121,609

Share-Based Compensation Weight

Share-Based Compensation Weighting for Components of Performance Based RSU Awards (Details) - PLC Long Term Incentive Plan		6 Months Ended	12 Months Ended
		Jun. 30, 2021	Dec. 31, 2020
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-Based Awards % Granted For Officers		60.00%	75.00%
2020 - 2021 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average return on net assets	[1]	33.00%
Cumulative net income		33.00%
Relative total shareholder return	[2]	33.00%
2017 - 2019 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average return on net assets	[1]	50.00%
Cumulative net income		25.00%
Relative total shareholder return	[2]	25.00%
[1]	Average return on net assets is measured by tax-affected operating income divided by average net working capital plus average net property, plant and equipment for each calendar year during the respective performance period.
[2]	Relative total shareholder return is measured by comparing the average closing price per share of the Company’s ordinary shares for the specified trading days in the fourth quarter of the end of the performance period to the average closing price per share of the Company’s ordinary shares for the specified trading days in the fourth quarter of the year preceding the grant, including dividends, and assessed against a comparable measure of competitor and peer group companies.

Share-Based Compensation Summar

Share-Based Compensation Summary of Activity for LTIP RSU's (Details) - USD ($) $ / shares in Units, $ in Millions	Apr. 30, 2021	Apr. 29, 2021	Apr. 23, 2020	Apr. 22, 2020	Apr. 25, 2019	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2017	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payment, Tax Withholding, Share-based Payment Arrangement													$ 45	$ 33
PLC Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
LTIP Nonvested, Weighted Average Grant Date Fair Value per share											$ 127.61		$ 127.61		$ 102.95
LTIP Grants in Period, Weighted Average Grant Date Fair Value per share													160.28
LTIP Vested in Period, Weighted Average Grant Date Fair Value per share													79.97
LTIP RSUs, Forfeitures, Weighted Average Grant Date Fair Value per share													$ 110.31
Share-based Compensation Expense											$ 28	$ 13	$ 57	12
Share-based Compensation Expense, net of tax											28	$ 13	57	12
Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized											$ 168		$ 168
Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition													2 years
Payment, Tax Withholding, Share-based Payment Arrangement													$ 45	$ 33
PLC Long Term Incentive Plan | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
LTIP Shares, Nonvested, Number											1,775,000		1,775,000		1,786,000
RSU's Granted													575,000
LTIP RSUs, Vested in Period													(497,000)
LTIP RSUs, Forfeited in Period													(89,000)
Grant Date Fair Value						$ 72	$ 62	$ 62	$ 61	$ 63
PLC Long Term Incentive Plan | Restricted Stock Units (RSUs) | Board of Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSU's Granted	17,589		48,745		20,765
RSU's Issued in Period, Gross		41,896		23,816
Fair Value of RSUs Vested in Period		$ 6		$ 1
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Withheld for Taxes in Period		6,849		2,041
Grant Date Fair Value	$ 3		$ 3		$ 2
PLC Long Term Incentive Plan | Restricted Stock Units (RSUs) | Executives | 2017 Grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSU's Granted										800,000
PLC Long Term Incentive Plan | Restricted Stock Units (RSUs) | Executives | 2018 Grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSU's Granted									630,000
PLC Long Term Incentive Plan | Restricted Stock Units (RSUs) | Executives | Time-Based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSU's Issued in Period, Gross						449,426	468,240
Fair Value of RSUs Vested in Period						$ 67	$ 37
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Withheld for Taxes in Period						(177,825)	(181,495)
PLC Long Term Incentive Plan | Restricted Stock Units (RSUs) | Executives | Performance-Based | 2017 Grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSU's Issued in Period, Gross														580,390
Fair Value of RSUs Vested in Period														$ 45
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Withheld for Taxes in Period														(243,080)
PLC Long Term Incentive Plan | Restricted Stock Units (RSUs) | Executives | Performance-Based | 2018 Grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSU's Issued in Period, Gross													288,074
Fair Value of RSUs Vested in Period													$ 43
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Withheld for Taxes in Period													(121,609)

Segment Reporting Reconciliatio

Segment Reporting Reconciliation of Sales and Operating Data (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Net sales	$ 3,807	$ 1,960	$ 7,830	$ 5,186
Depreciation and amortization	197	184	390	364
Adjusted operating income (loss)	301	(229)	738	2
Operating income	285	(311)	714	1,308
Equity loss, net of tax	(53)	(18)	(95)	(16)
Net income attributable to noncontrolling interest	3	1	8	(4)
Gain on autonomous driving joint venture			0	1,434
Autonomous Driving Joint Venture [Member]
Segment Reporting Information [Line Items]
Gain on autonomous driving joint venture	0	0	0
Advanced Safety and User Experience | Autonomous Driving Joint Venture [Member]
Segment Reporting Information [Line Items]
Gain on autonomous driving joint venture				1,400
Operating Segments | Signal and Power Solutions
Segment Reporting Information [Line Items]
Net sales	2,846	1,435	5,868	3,765
Depreciation and amortization	153	143	302	282
Adjusted operating income (loss)	277	(143)	648	82
Operating income	265	(208)	637	(9)
Equity loss, net of tax	2	3	5	6
Net income attributable to noncontrolling interest	3	1	8	(4)
Gain on autonomous driving joint venture				0
Operating Segments | Advanced Safety and User Experience
Segment Reporting Information [Line Items]
Net sales	970	530	1,981	1,432
Depreciation and amortization	44	41	88	82
Adjusted operating income (loss)	24	(86)	90	(80)
Operating income	20	(103)	77	1,317
Equity loss, net of tax	(55)	(21)	(100)	(22)
Net income attributable to noncontrolling interest	0	0	0	0
Gain on autonomous driving joint venture				1,434
Intersegment Eliminations
Segment Reporting Information [Line Items]
Net sales	(9)	(5)	(19)	(11)
Depreciation and amortization	0	0	0	0
Adjusted operating income (loss)	0	0	0	0
Operating income	0	0	0	0
Equity loss, net of tax	0	0	0	0
Net income attributable to noncontrolling interest	$ 0	$ 0	$ 0	0
Gain on autonomous driving joint venture				$ 0

Segment Reporting Reconciliat_2

Segment Reporting Reconciliation of Adjusted OI to Net Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Adjusted operating income (loss)	$ 301	$ (229)	$ 738	$ 2
Restructuring Charges	14	72	20	100
Other acquisition and portfolio project costs	2	2	4	16
Asset Impairment Charges		4		4
Deferred compensation related to acquisitions		4		8
Gain on autonomous driving joint venture			0	1,434
Operating income (loss)	285	(311)	714	1,308
Interest Expense	38	44	78	87
Other (expense) income, net	0	(6)	1	(7)
Income (loss) before income taxes and equity loss	247	(361)	637	1,214
Income tax expense (benefit)	28	(14)	76	(4)
Equity loss, net of tax	(53)	(18)	(95)	(16)
Net income (loss)	166	(365)	466	1,202
Net income (loss) attributable to noncontrolling interest	3	1	8	(4)
Net income attributable to Aptiv	163	(366)	458	1,206
Signal and Power Solutions
Segment Reporting Information [Line Items]
Restructuring Charges	11	60	9	79
Advanced Safety and User Experience
Segment Reporting Information [Line Items]
Restructuring Charges	3	12	11	21
Intersegment Eliminations
Segment Reporting Information [Line Items]
Adjusted operating income (loss)	0	0	0	0
Restructuring Charges	0	0	0	0
Other acquisition and portfolio project costs	0	0	0	0
Asset Impairment Charges		0		0
Deferred compensation related to acquisitions		0		0
Gain on autonomous driving joint venture				0
Operating income (loss)	0	0	0	0
Equity loss, net of tax	0	0	0	0
Operating Segments | Signal and Power Solutions
Segment Reporting Information [Line Items]
Adjusted operating income (loss)	277	(143)	648	82
Restructuring Charges	11	60	9	79
Other acquisition and portfolio project costs	1	1	2	8
Asset Impairment Charges		4		4
Deferred compensation related to acquisitions		0		0
Gain on autonomous driving joint venture				0
Operating income (loss)	265	(208)	637	(9)
Equity loss, net of tax	2	3	5	6
Operating Segments | Advanced Safety and User Experience
Segment Reporting Information [Line Items]
Adjusted operating income (loss)	24	(86)	90	(80)
Restructuring Charges	3	12	11	21
Other acquisition and portfolio project costs	1	1	2	8
Asset Impairment Charges		0		0
Deferred compensation related to acquisitions		4		8
Gain on autonomous driving joint venture				1,434
Operating income (loss)	20	(103)	77	1,317
Equity loss, net of tax	$ (55)	$ (21)	$ (100)	$ (22)

Revenue Disaggregation of Reven

Revenue Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Net sales	$ 3,807	$ 1,960	$ 7,830	$ 5,186
North America
Disaggregation of Revenue [Line Items]
Net sales	1,291	496	2,672	1,793
EMEA
Disaggregation of Revenue [Line Items]
Net sales	1,338	578	2,779	1,796
Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	1,106	867	2,241	1,523
South America
Disaggregation of Revenue [Line Items]
Net sales	72	19	138	74
Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Net sales	(9)	(5)	(19)	(11)
Intersegment Eliminations | North America
Disaggregation of Revenue [Line Items]
Net sales	(1)	(1)	(3)	(1)
Intersegment Eliminations | EMEA
Disaggregation of Revenue [Line Items]
Net sales	(3)	(1)	(6)	(4)
Intersegment Eliminations | Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	(5)	(3)	(10)	(6)
Intersegment Eliminations | South America
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Advanced Safety and User Experience | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	970	530	1,981	1,432
Advanced Safety and User Experience | Operating Segments | North America
Disaggregation of Revenue [Line Items]
Net sales	283	96	596	388
Advanced Safety and User Experience | Operating Segments | EMEA
Disaggregation of Revenue [Line Items]
Net sales	442	212	893	655
Advanced Safety and User Experience | Operating Segments | Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	245	222	492	389
Advanced Safety and User Experience | Operating Segments | South America
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Signal and Power Solutions | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2,846	1,435	5,868	3,765
Signal and Power Solutions | Operating Segments | North America
Disaggregation of Revenue [Line Items]
Net sales	1,009	401	2,079	1,406
Signal and Power Solutions | Operating Segments | EMEA
Disaggregation of Revenue [Line Items]
Net sales	899	367	1,892	1,145
Signal and Power Solutions | Operating Segments | Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	866	648	1,759	1,140
Signal and Power Solutions | Operating Segments | South America
Disaggregation of Revenue [Line Items]
Net sales	$ 72	$ 19	$ 138	$ 74

Revenue Costs to Obtain a Contr

Revenue Costs to Obtain a Contract (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Capitalized upfront fees	$ 98		$ 98		$ 116
Capitalized upfront fees (Note 20)	32		32		30
Capitalized upfront fees (Note 20)	66		66		$ 86
Capitalized upfront fees, amortization	$ 8	$ 5	$ 14	$ 9

Uncategorized Items - aptv-2021

Label	Element	Value
Other Current Liabilities [Member] | Liability [Member] | Fair Value, Recurring [Member]
Business Combination, Contingent Consideration, Liability	us-gaap_BusinessCombinationContingentConsiderationLiability	$ 52,000,000
Business Combination, Contingent Consideration, Liability	us-gaap_BusinessCombinationContingentConsiderationLiability	$ 52,000,000