Significant Accounting Policies	3 Months Ended
Mar. 31, 2026
Accounting Policies [Abstract]
Significant Accounting Policies	SIGNIFICANT ACCOUNTING POLICIES Consolidation—The consolidated financial statements include the accounts of Aptiv and the 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. Aptiv held no investments in publicly traded equity securities as of March 31, 2026 and December 31, 2025. Aptiv’s non-publicly traded investments totaled $66 million and $65 million as of March 31, 2026 and December 31, 2025, respectively, and are classified within other long-term assets in the consolidated balance sheets. Refer to Note 21. Investments in Affiliates for further information regarding Aptiv’s investments. In 2022, the Company acquired 85% of the equity interests of Intercable Automotive Solutions S.r.l. (“Intercable Automotive”). Concurrent with the acquisition, the Company entered into an agreement with the noncontrolling interest holders that provides the Company with the right to purchase, and the noncontrolling interest holders with the right to sell, the remaining 15% of Intercable Automotive for cash at a contractually defined value beginning in 2026. As of March 31, 2026, the option had not been exercised by either the Company or the noncontrolling interest holders. As a result of this redemption feature, the Company recorded the redeemable noncontrolling interest at its acquisition-date fair value to temporary equity in the consolidated balance sheet. The redeemable noncontrolling interest is adjusted each reporting period for the income (loss) attributable to the noncontrolling interest, and for any measurement period adjustments necessary to record the redeemable noncontrolling interest at the higher of its redemption value, assuming it was redeemable at the reporting date, or its carrying value. Any measurement period adjustments are recorded to retained earnings, with a corresponding increase or reduction to net income (loss) attributable to Aptiv. Redeemable noncontrolling interest was $99 million and $102 million as of March 31, 2026 and December 31, 2025, respectively. In the second quarter of 2026, the noncontrolling interest holders exercised their option to sell the remaining 15% of Intercable Automotive at the contractually defined value of approximately $65 million. 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, redeemable noncontrolling interest, worker’s compensation accruals and healthcare accruals. Due to the inherent uncertainty involved in making estimates, actual results reported in future periods may be based upon amounts that differ from those estimates. Revenue recognition—Revenue is measured based on consideration specified in a contract with a customer. Customer contracts for production parts generally are represented by a combination of a current purchase order and a current production schedule issued by the customer. Substantially all of the Company's revenue is generated from the sale of manufactured production parts, wherein there is a single performance obligation. Transfer of control and revenue recognition for the Company’s sales of production parts generally occurs upon shipment or delivery of the product, which is when title, ownership, and risk of loss pass to the customer and is based on the applicable customer shipping terms. Revenue is measured based on the transaction price and the quantity of parts specified in a contract with a customer. Refer to Note 20. Revenue for further detail of the Company’s accounting for its revenue from sales of production parts. Customer contracts for software licenses are generally represented by a sales contract or purchase order with contract durations typically ranging from one to three years. The Company recognizes revenue when it satisfies a performance obligation by transferring control over a product or service to a customer. Revenue from software licenses and professional software services is generally recognized at a point in time upon delivery or when the services are provided. Revenue from post delivery support and maintenance for software contracts is generally recognized over time on a ratable basis over the contract term. Certain software license contracts contain multiple performance obligations, for which the Company allocates the contract’s transaction price to each performance obligation based on the estimated relative standalone selling price of each distinct performance obligation in the contract. The standalone selling prices are generally determined based on observable inputs, such as the prices of standalone sales and historical contract pricing. Under certain of these arrangements, timing may differ between revenue recognition and billing. Refer to Note 20. Revenue for further detail of the Company’s accounting for its revenue from contracts with customers, including contract balances associated with software sales. From time to time, Aptiv enters into pricing agreements with its customers that provide for price reductions on production parts, some of which are conditional upon achieving certain joint cost saving targets, which are accounted for as variable consideration. In these instances, revenue is recognized based on the agreed-upon price at the time of shipment if available, or in the event the Company concludes that a portion of the revenue for a given part may vary from the purchase order and requires estimation, the Company records consideration at the most likely amount that the Company expects to be entitled to based on historical experience and input from customer negotiations. Sales incentives and allowances are recognized as a reduction to revenue at the time of the related sale. In addition, 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. Aptiv collects and remits taxes assessed by different governmental authorities that are both imposed on and concurrent with a revenue-producing transaction between the Company and the Company’s customers. These taxes may include, but are not limited to, sales, use, value-added, and some excise taxes. Aptiv reports the collection of these taxes on a net basis (excluded from revenues). Shipping and handling fees billed to customers are included in net sales, while costs of shipping and handling are included in cost of sales. Refer to Note 20. Revenue for further information. Net income (loss) per share—Basic net income (loss) per share is computed by dividing net income (loss) attributable to Aptiv 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 method by dividing net income (loss) attributable to Aptiv by the diluted weighted average number of ordinary shares outstanding during the period. 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 primarily includes balances on deposit at financial institutions that have issued letters of credit in favor of Aptiv and cash deposited into escrow accounts. 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, software licenses 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 March 31, 2026 and December 31, 2025, the Company reported $3,798 million and $3,477 million, respectively, of accounts receivable, net of the allowances, which includes the allowance for doubtful accounts of $47 million and $45 million, respectively. Changes in the allowance for doubtful accounts were not material for the three months ended March 31, 2026. Inventories—As of March 31, 2026 and December 31, 2025, 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. Refer to Note 3. Inventories for additional information. Obsolete inventory is identified based on analysis of inventory for known obsolescence issues, and, generally, the net realizable value of inventory on hand in excess of one year’s supply is fully-reserved. From time to time, payments may be received from suppliers. These payments from suppliers are recognized as a reduction of the cost of the material acquired during the period to which the payments relate. In some instances, supplier rebates are received in conjunction with or concurrent with the negotiation of future purchase agreements and these amounts are amortized over the prospective agreement period as purchases are made. Intangible assets—Intangible assets were $1,940 million and $2,004 million as of March 31, 2026 and December 31, 2025, respectively. The Company amortizes definite-lived intangible assets over their estimated useful lives. The Company 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 $53 million and $51 million for the three months ended March 31, 2026 and 2025, 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 (step 0). If the qualitative assessment is not met the Company then performs a quantitative assessment (step 1) 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. When a quantitative assessment is required, the estimated fair value of the Company’s reporting units is primarily determined using discounted cash flow projections. Forecasts of future cash flows are based on management’s best estimates. The discount rate is determined using a weighted average cost of capital adjusted for risk factors specific to the reporting unit. In the first quarter of 2026, due to the realignment of the business structure within the Intelligent Systems segment, including how management views and manages this business, we reassessed the composition of our reporting units. As a result of the reassessment, our former Wind River reporting unit is now managed as part of our Intelligent Systems reporting unit. Upon realignment of our reporting units, we tested goodwill related to the impacted reporting units immediately before the reassessment. The Company performed a qualitative assessment (step 0) for its former AS&UX Core reporting unit, concluding that sufficient evidence existed to assert qualitatively that it was more likely than not that the estimated fair value remained in excess of its carrying value, and performed a quantitative assessment (step 1) for its former Wind River reporting unit, concluding that its fair value exceeded its carrying value, indicating no goodwill impairment existed. Immediately after the reassessment, the Company performed a quantitative assessment (step 1) for its Intelligent Systems reporting unit, concluding that its fair value exceeded its carrying value, indicating no goodwill impairment existed. The realignment of the Company’s reporting units did not change the composition of our reportable segments. The Company concluded there were no goodwill impairments during the three months ended March 31, 2026 and 2025. Goodwill was $4,548 million and $4,596 million as of March 31, 2026 and December 31, 2025, 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. As it relates to changes in accumulated other comprehensive income (loss), the Company’s policy is to release tax effects from accumulated other comprehensive income (loss) when the underlying components affect earnings. 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 are recorded when contracts are terminated. All other exit costs are expensed as incurred. Refer to Note 7. Restructuring for additional information. Customer concentrations—We sell our products and services to the major global OEMs in every region of the world. Our ten largest customers accounted for approximately 55% of our total net sales for the three months ended March 31, 2026, which included approximately 11% to an individual Global OEM, and accounted for approximately 55% for the three months ended March 31, 2025, which included approximately 11% to another individual Global OEM. During the three months ended March 31, 2026, our Electrical Distribution Systems segment recognized net sales to each of our ten largest customers, our Intelligent Systems segment recognized net sales to eight of our ten largest customers and our Engineered Components segment recognized net sales to six of our ten largest customers. During the three months ended March 31, 2025, our Electrical Distribution Systems segment and Intelligent Systems segment recognized net sales to each of our ten largest customers, and our Engineered Components segment recognized net sales to nine of our ten largest customers. Recently adopted accounting pronouncements—Aptiv adopted ASU 2025-05, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets in the first quarter of 2026. The amendments in this update provide a practical expedient for estimating credit losses for current accounts receivable and current contract assets that arise from transactions accounted for in accordance with ASC Topic 606, Revenue from Contracts with Customers. The adoption of this guidance did not have a significant impact on Aptiv’s financial statements. Recently issued accounting pronouncements not yet adopted—In December 2025, the FASB issued ASU 2025-12, Codification Improvements. The amendments in this update address changes to the Codification that clarify, correct errors and make minor improvements, making the Codification easier to understand and apply. The new guidance will be applied prospectively and is effective for fiscal years beginning after December 15, 2026, and interim periods within those annual reporting periods, with the option to apply retrospectively. Early adoption is permitted. The adoption of this guidance is not expected to have a significant impact on Aptiv’s consolidated financial statements. In December 2025, the FASB issued ASU 2025-11, Interim Reporting (Topic 270): Narrow-Scope Improvements. The amendments in this update provide clarifications intended to improve the consistency and usability of interim disclosure requirements and the applicability to Topic 270. The amendments also provide additional guidance for reporting material events occurring after the most recent annual period. The new guidance will be applied prospectively and is effective for fiscal years beginning after December 15, 2027, and interim periods within those annual reporting periods, with the option to apply retrospectively Early adoption is permitted. The adoption of this guidance is not expected to have a significant impact on Aptiv’s consolidated financial statements. In December 2025, the FASB issued ASU 2025-10, Government Grants (Topic 832): Accounting for Government Grants Received by Business Entities. The amendments in this update establish the accounting for government grants, including guidance for grants related to an asset and grants related to income. The new guidance will be applied prospectively and is effective for fiscal years beginning after December 15, 2028, and interim periods within those annual reporting periods, with the option to apply retrospectively. Early adoption is permitted. The Company is currently evaluating the impact that the adoption of this guidance will have on its consolidated financial statements. In November 2025, the FASB issued ASU 2025-09, Derivatives and Hedging (Topic 815): Hedge Accounting Improvements. The amendments in this update provide targeted improvements intended to enhance alignment between risk management activities and financial reporting, including expanded eligibility of forecasted transactions, additional flexibility in measuring hedge effectiveness and clarifications related to hedging non-financial items. The new guidance will be applied prospectively and is effective for fiscal years beginning after December 15, 2026, and interim periods within those annual reporting periods, with the option to apply retrospectively. Early adoption is permitted. The Company is currently evaluating the impact that the adoption of this guidance will have on its consolidated financial statements. In September 2025, the FASB issued ASU 2025-07, Derivatives and Hedging (Topic 815) and Revenue from Contracts with Customers (Topic 606): Derivatives Scope Refinements and Scope Clarification for Share-Based Noncash Consideration from a Customer in a Revenue Contract. The amendments in this update exclude from derivative accounting non-exchange-traded contracts with underlyings that are based on operations or activities specific to one of the parties to the contract. The amendments also provide clarification for share-based payments from a customer in a revenue contract. The new guidance will be applied prospectively and is effective for fiscal years beginning after December 15, 2026, and interim periods within those annual reporting periods, with the option to apply retrospectively. Early adoption is permitted. The adoption of this guidance is not expected to have a significant impact on Aptiv’s consolidated financial statements. In September 2025, the FASB issued ASU 2025-06, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software. The amendments in this update clarify and modernize the accounting for costs related to internal-use software. The amendments also remove references to prescriptive and sequential software development stages, as well as clarify disclosure requirements for capitalized software costs. The new guidance will be applied prospectively and is effective for fiscal years beginning after December 15, 2027, and interim periods within those annual reporting periods, with the option to apply retrospectively. Early adoption is permitted. The adoption of this guidance is not expected to have a significant impact on Aptiv’s consolidated financial statements. In May 2025, the FASB issued ASU 2025-03, Business Combinations (Topic 805) and Consolidation (Topic 810): Determining the Accounting Acquirer in the Acquisition of a Variable Interest Entity. The amendments in this update clarify guidance for identifying the accounting acquirer in business combination effected primarily by exchanging equity interests when the legal acquiree is a variable interest entity that meets the definition of a business. The new guidance will be applied prospectively and is effective for fiscal years beginning after December 15, 2026 and interim periods within those annual reporting periods. Early adoption is permitted. The adoption of this guidance is not expected to have a significant impact on Aptiv’s consolidated financial statements. In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. The amendments in this update require public entities to disclose, on an annual and interim basis, disaggregated information about certain income statement expenses, including purchases of inventory, employee compensation, depreciation, intangible asset amortization and depletion, that are included in each relevant income statement expense line item. The amendments also require qualitative descriptions of the amounts remaining in relevant expense line items not separately disaggregated quantitatively. Certain amounts already disclosed under existing U.S. GAAP are required to be included in the same disclosure as the other disaggregated income statement expense line items. In addition, the amendments require disclosure of the total amount of selling expenses and, in annual reporting periods, an entity’s definition of those expenses. The new guidance will be applied prospectively and is effective for fiscal years beginning after December 15, 2026 and interim periods within fiscal years beginning after December 15, 2027. Early adoption is permitted. The adoption of this guidance is expected to result in incremental disclosures in the Company’s financial statements.

Consolidation—The consolidated financial statements include the accounts of Aptiv and the 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.

Aptiv held no investments in publicly traded equity securities as of March 31, 2026 and December 31, 2025. Aptiv’s non-publicly traded investments totaled $66 million and $65 million as of March 31, 2026 and December 31, 2025, respectively, and are classified within other long-term assets in the consolidated balance sheets. Refer to Note 21. Investments in Affiliates for further information regarding Aptiv’s investments.

In 2022, the Company acquired 85% of the equity interests of Intercable Automotive Solutions S.r.l. (“Intercable Automotive”). Concurrent with the acquisition, the Company entered into an agreement with the noncontrolling interest holders that provides the Company with the right to purchase, and the noncontrolling interest holders with the right to sell, the remaining 15% of Intercable Automotive for cash at a contractually defined value beginning in 2026. As of March 31, 2026, the option had not been exercised by either the Company or the noncontrolling interest holders. As a result of this redemption feature, the Company recorded the redeemable noncontrolling interest at its acquisition-date fair value to temporary equity in the consolidated balance sheet. The redeemable noncontrolling interest is adjusted each reporting period for the income (loss) attributable to the noncontrolling interest, and for any measurement period adjustments necessary to record the redeemable noncontrolling interest at the higher of its redemption value, assuming it was redeemable at the reporting date, or its carrying value. Any measurement period adjustments are recorded to retained earnings, with a corresponding increase or reduction to net income (loss) attributable to Aptiv. Redeemable noncontrolling interest was $99 million and $102 million as of March 31, 2026 and December 31, 2025, respectively. In the second quarter of 2026, the noncontrolling interest holders exercised their option to sell the remaining 15% of Intercable Automotive at the contractually defined value of approximately $65 million.

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, redeemable noncontrolling interest, worker’s compensation accruals and healthcare accruals. Due to the inherent uncertainty involved in making estimates, actual results reported in future periods may be based upon amounts that differ from those estimates.

Revenue recognition—Revenue is measured based on consideration specified in a contract with a customer. Customer contracts for production parts generally are represented by a combination of a current purchase order and a current production schedule issued by the customer. Substantially all of the Company's revenue is generated from the sale of manufactured production parts, wherein there is a single performance obligation. Transfer of control and revenue recognition for the Company’s sales of production parts generally occurs upon shipment or delivery of the product, which is when title, ownership, and risk of loss pass to the customer and is based on the applicable customer shipping terms. Revenue is measured based on the transaction price and the quantity of parts specified in a contract with a customer. Refer to Note 20. Revenue for further detail of the Company’s accounting for its revenue from sales of production parts.

Customer contracts for software licenses are generally represented by a sales contract or purchase order with contract durations typically ranging from one to three years. The Company recognizes revenue when it satisfies a performance obligation by transferring control over a product or service to a customer. Revenue from software licenses and professional software services is generally recognized at a point in time upon delivery or when the services are provided. Revenue from post delivery support and maintenance for software contracts is generally recognized over time on a ratable basis over the contract term. Certain software license contracts contain multiple performance obligations, for which the Company allocates the contract’s transaction price to each performance obligation based on the estimated relative standalone selling price of each distinct performance obligation in the contract. The standalone selling prices are generally determined based on observable inputs, such as the prices of standalone sales and historical contract pricing. Under certain of these arrangements, timing may differ between revenue recognition and billing. Refer to Note 20. Revenue for further detail of the Company’s accounting for its revenue from contracts with customers, including contract balances associated with software sales.

From time to time, Aptiv enters into pricing agreements with its customers that provide for price reductions on production parts, some of which are conditional upon achieving certain joint cost saving targets, which are accounted for as variable consideration. In these instances, revenue is recognized based on the agreed-upon price at the time of shipment if available, or in the event the Company concludes that a portion of the revenue for a given part may vary from the purchase order and requires estimation, the Company records consideration at the most likely amount that the Company expects to be entitled to based on historical experience and input from customer negotiations.

Sales incentives and allowances are recognized as a reduction to revenue at the time of the related sale. In addition, 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.

Aptiv collects and remits taxes assessed by different governmental authorities that are both imposed on and concurrent with a revenue-producing transaction between the Company and the Company’s customers. These taxes may include, but are not limited to, sales, use, value-added, and some excise taxes. Aptiv reports the collection of these taxes on a net basis (excluded from revenues). Shipping and handling fees billed to customers are included in net sales, while costs of shipping and handling are included in cost of sales. Refer to Note 20. Revenue for further information.

Net income (loss) per share—Basic net income (loss) per share is computed by dividing net income (loss) attributable to Aptiv 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 method by dividing net income (loss) attributable to Aptiv by the diluted weighted average number of ordinary shares outstanding during the period. 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.

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, software licenses 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 March 31, 2026 and December 31, 2025, the Company reported $3,798 million and $3,477 million, respectively, of accounts receivable, net of the allowances, which includes the allowance for doubtful accounts of $47 million and $45 million, respectively. Changes in the allowance for doubtful accounts were not material for the three months ended March 31, 2026.

Inventories—As of March 31, 2026 and December 31, 2025, 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. Refer to Note 3. Inventories for additional information. Obsolete inventory is identified based on analysis of inventory for known obsolescence issues, and, generally, the net realizable value of inventory on hand in excess of one year’s supply is fully-reserved.

From time to time, payments may be received from suppliers. These payments from suppliers are recognized as a reduction of the cost of the material acquired during the period to which the payments relate. In some instances, supplier rebates are received in conjunction with or concurrent with the negotiation of future purchase agreements and these amounts are amortized over the prospective agreement period as purchases are made.

Intangible assets—Intangible assets were $1,940 million and $2,004 million as of March 31, 2026 and December 31, 2025, respectively. The Company amortizes definite-lived intangible assets over their estimated useful lives. The Company 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 $53 million and $51 million for the three months ended March 31, 2026 and 2025, 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 (step 0). If the qualitative assessment is not met the Company then performs a quantitative assessment (step 1) 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.

When a quantitative assessment is required, the estimated fair value of the Company’s reporting units is primarily determined using discounted cash flow projections. Forecasts of future cash flows are based on management’s best estimates. The discount rate is determined using a weighted average cost of capital adjusted for risk factors specific to the reporting unit.

In the first quarter of 2026, due to the realignment of the business structure within the Intelligent Systems segment, including how management views and manages this business, we reassessed the composition of our reporting units. As a result of the reassessment, our former Wind River reporting unit is now managed as part of our Intelligent Systems reporting unit. Upon realignment of our reporting units, we tested goodwill related to the impacted reporting units immediately before the reassessment. The Company performed a qualitative assessment (step 0) for its former AS&UX Core reporting unit, concluding that sufficient evidence existed to assert qualitatively that it was more likely than not that the estimated fair value remained in excess of its carrying value, and performed a quantitative assessment (step 1) for its former Wind River reporting unit, concluding that its fair value exceeded its carrying value, indicating no goodwill impairment existed. Immediately after the reassessment, the Company performed a quantitative assessment (step 1) for its Intelligent Systems reporting unit, concluding that its fair value exceeded its carrying value, indicating no goodwill impairment existed. The realignment of the Company’s reporting units did not change the composition of our reportable segments.

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. As it relates to changes in accumulated other comprehensive income (loss), the Company’s policy is to release tax effects from accumulated other comprehensive income (loss) when the underlying components affect earnings. 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 are recorded when contracts are terminated. All other exit costs are expensed as incurred. Refer to Note 7. Restructuring for additional information.

Customer concentrations—We sell our products and services to the major global OEMs in every region of the world. Our ten largest customers accounted for approximately 55% of our total net sales for the three months ended March 31, 2026, which included approximately 11% to an individual Global OEM, and accounted for approximately 55% for the three months ended March 31, 2025, which included approximately 11% to another individual Global OEM. During the three months ended March 31, 2026, our Electrical Distribution Systems segment recognized net sales to each of our ten largest customers, our Intelligent Systems segment recognized net sales to eight of our ten largest customers and our Engineered Components segment recognized net sales to six of our ten largest customers. During the three months ended March 31, 2025, our Electrical Distribution Systems segment and Intelligent Systems segment recognized net sales to each of our ten largest customers, and our Engineered Components segment recognized net sales to nine of our ten largest customers.

Recently adopted accounting pronouncements—Aptiv adopted ASU 2025-05, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets in the first quarter of 2026. The amendments in this update provide a practical expedient for estimating credit losses for current accounts receivable and current contract assets that arise from transactions accounted for in accordance with ASC Topic 606, Revenue from Contracts with Customers. The adoption of this guidance did not have a significant impact on Aptiv’s financial statements.

Recently issued accounting pronouncements not yet adopted—In December 2025, the FASB issued ASU 2025-12, Codification Improvements. The amendments in this update address changes to the Codification that clarify, correct errors and make minor improvements, making the Codification easier to understand and apply. The new guidance will be applied prospectively and is effective for fiscal years beginning after December 15, 2026, and interim periods within those annual reporting periods, with the option to apply retrospectively. Early adoption is permitted. The adoption of this guidance is not expected to have a significant impact on Aptiv’s consolidated financial statements.

In December 2025, the FASB issued ASU 2025-11, Interim Reporting (Topic 270): Narrow-Scope Improvements. The amendments in this update provide clarifications intended to improve the consistency and usability of interim disclosure requirements and the applicability to Topic 270. The amendments also provide additional guidance for reporting material events occurring after the most recent annual period. The new guidance will be applied prospectively and is effective for fiscal years beginning after December 15, 2027, and interim periods within those annual reporting periods, with the option to apply retrospectively Early adoption is permitted. The adoption of this guidance is not expected to have a significant impact on Aptiv’s consolidated financial statements.

In December 2025, the FASB issued ASU 2025-10, Government Grants (Topic 832): Accounting for Government Grants Received by Business Entities. The amendments in this update establish the accounting for government grants, including guidance for grants related to an asset and grants related to income. The new guidance will be applied prospectively and is effective for fiscal years beginning after December 15, 2028, and interim periods within those annual reporting periods, with the option to apply retrospectively. Early adoption is permitted. The Company is currently evaluating the impact that the adoption of this guidance will have on its consolidated financial statements.

In November 2025, the FASB issued ASU 2025-09, Derivatives and Hedging (Topic 815): Hedge Accounting Improvements. The amendments in this update provide targeted improvements intended to enhance alignment between risk management activities and financial reporting, including expanded eligibility of forecasted transactions, additional flexibility in measuring hedge effectiveness and clarifications related to hedging non-financial items. The new guidance will be applied prospectively and is effective for fiscal years beginning after December 15, 2026, and interim periods within those annual reporting periods, with the option to apply retrospectively. Early adoption is permitted. The Company is currently evaluating the impact that the adoption of this guidance will have on its consolidated financial statements.

In September 2025, the FASB issued ASU 2025-07, Derivatives and Hedging (Topic 815) and Revenue from Contracts with Customers (Topic 606): Derivatives Scope Refinements and Scope Clarification for Share-Based Noncash Consideration from a Customer in a Revenue Contract. The amendments in this update exclude from derivative accounting non-exchange-traded contracts with underlyings that are based on operations or activities specific to one of the parties to the contract. The amendments also provide clarification for share-based payments from a customer in a revenue contract. The new guidance will be applied prospectively and is effective for fiscal years beginning after December 15, 2026, and interim periods within those annual reporting periods, with the option to apply retrospectively. Early adoption is permitted. The adoption of this guidance is not expected to have a significant impact on Aptiv’s consolidated financial statements.

In September 2025, the FASB issued ASU 2025-06, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software. The amendments in this update clarify and modernize the accounting for costs related to internal-use software. The amendments also remove references to prescriptive and sequential software development stages, as well as clarify disclosure requirements for capitalized software costs. The new guidance will be applied prospectively and is effective for fiscal years beginning after December 15, 2027, and interim periods within those annual reporting periods, with the option to apply retrospectively. Early adoption is permitted. The adoption of this guidance is not expected to have a significant impact on Aptiv’s consolidated financial statements.

In May 2025, the FASB issued ASU 2025-03, Business Combinations (Topic 805) and Consolidation (Topic 810): Determining the Accounting Acquirer in the Acquisition of a Variable Interest Entity. The amendments in this update clarify guidance for identifying the accounting acquirer in business combination effected primarily by exchanging equity interests when the legal acquiree is a variable interest entity that meets the definition of a business. The new guidance will be applied prospectively and is effective for fiscal years beginning after December 15, 2026 and interim periods within those annual reporting periods. Early adoption is permitted. The adoption of this guidance is not expected to have a significant impact on Aptiv’s consolidated financial statements.