Adient (ADNT) 10-K 22 Nov 22 2022 FY Annual report Financial data

Cover

Cover - USD ($) $ in Billions	12 Months Ended
	Sep. 30, 2022	Mar. 31, 2022
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Sep. 30, 2022
Current Fiscal Year End Date	--09-30
Document Transition Report	false
Entity File Number	001-37757
Entity Registrant Name	Adient plc
Entity Incorporation, State or Country Code	L2
Entity Tax Identification Number	98-1328821
Entity Address, Address Line One	3 Dublin Landings North Wall Quay
Entity Address, Address Line Two	IFSC
Entity Address, City or Town	Dublin 1
Entity Address, Country	IE
Entity Address, Postal Zip Code	D01 H104
City Area Code	734
Local Phone Number	254-5000
Title of 12(b) Security	Ordinary Shares, par value $0.001
Trading Symbol	ADNT
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
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
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float		$ 3.9
Entity Common Stock, Shares Outstanding	94,858,156
Documents Incorporated by Reference	Documents Incorporated by Reference Portions of the Registrant's definitive proxy statement relating to its 2023 annual general meeting of shareholders to be held on March 7, 2023 (the "2023 Proxy Statement") are incorporated by reference into Part III of this Annual Report on Form 10-K where indicated. The 2023 Proxy Statement will be filed with the U.S. Securities and Exchange Commission within 120 days after the end of the fiscal year to which this report relates.
Entity Central Index Key	0001670541
Document Fiscal Year Focus	2022
Document Fiscal Period Focus (Q1,Q2,Q3,FY)	FY
Amendment Flag	false

Audit Information

Audit Information	12 Months Ended
	Sep. 30, 2022
Auditor Information [Abstract]
Auditor Name	PricewaterhouseCoopers LLP
Auditor Location	Detroit, Michigan
Auditor Firm ID	238

Consolidated Statements of Inco

Consolidated Statements of Income (Loss) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Net Sales	$ 14,121	$ 13,680	$ 12,670
Cost of sales	13,314	12,854	12,078
Gross profit	807	826	592
Selling, general and administrative expenses	598	537	558
Loss on business divestitures - net	0	26	13
Restructuring and impairment costs	25	21	238
Equity income (loss)	75	1,484	22
Earnings (loss) before interest and income taxes	259	1,726	(195)
Net financing charges	215	311	220
Other pension expense (income)	(10)	(24)	14
Income (loss) before income taxes	54	1,439	(429)
Income tax provision (benefit)	94	249	57
Net income (loss)	(40)	1,190	(486)
Income (loss) attributable to noncontrolling interests	80	82	61
Net income (loss) attributable to Adient	$ (120)	$ 1,108	$ (547)
Earnings per share:
Basic (in dollars per share)	$ (1.27)	$ 11.76	$ (5.83)
Diluted (in dollars per share)	$ (1.27)	$ 11.58	$ (5.83)
Shares used in computing earnings per share:
Basic (in shares)	94.8	94.2	93.8
Diluted (in shares)	94.8	95.7	93.8

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (40)	$ 1,190	$ (486)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(250)	16	(69)
Realized and unrealized gains (losses) on derivatives	0	20	(20)
Pension and postretirement plans	1	1	0
Other comprehensive income (loss)	(249)	37	(89)
Total comprehensive income (loss)	(289)	1,227	(575)
Comprehensive income (loss) attributable to noncontrolling interests	49	81	68
Comprehensive income (loss) attributable to Adient	$ (338)	$ 1,146	$ (643)

Consolidated Statements of Fina

Consolidated Statements of Financial Position - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Assets
Cash and cash equivalents	$ 947	$ 1,521
Accounts receivable, less allowance for doubtful accounts of $21 and $29, respectively	1,852	1,426
Inventories	953	976
Assets held for sale	0	49
Other current assets	411	1,114
Current assets	4,163	5,086
Property, plant and equipment - net	1,377	1,607
Goodwill	2,057	2,212
Other intangible assets - net	467	555
Investments in partially-owned affiliates	286	335
Assets held for sale	11	25
Other noncurrent assets	797	958
Total assets	9,158	10,778
Liabilities and Shareholders' Equity
Short-term debt	3	17
Current portion of long-term debt	11	167
Accounts payable	2,478	2,130
Accrued compensation and benefits	340	389
Liabilities held for sale	0	16
Restructuring reserve	60	115
Other current liabilities	609	677
Current liabilities	3,501	3,511
Long-term debt	2,564	3,512
Pension and postretirement benefits	88	128
Other noncurrent liabilities	585	669
Long-term liabilities	3,237	4,309
Commitments and Contingencies
Redeemable noncontrolling interests	45	240
Preferred shares issued, par value $0.001; 100,000,000 shares authorized zero shares issued and outstanding at September 30, 2022	0	0
Ordinary shares issued, par value $0.001; 500,000,000 shares authorized 94,858,156 shares issued and outstanding at September 30, 2022	0	0
Additional paid-in capital	4,026	3,991
Retained earnings (accumulated deficit)	(1,108)	(988)
Accumulated other comprehensive income (loss)	(845)	(627)
Shareholders' equity attributable to Adient	2,073	2,376
Noncontrolling interests	302	342
Total shareholders' equity	2,375	2,718
Total liabilities and shareholders' equity	$ 9,158	$ 10,778

Consolidated Statements of Fi_2

Consolidated Statements of Financial Position (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 21	$ 29
Preferred stock, par value (in dollars per share)	$ 0.001
Preferred stock, shares authorized (in shares)	100,000,000
Preferred stock, shares issued (in shares)	0
Preferred stock, shares outstanding (in shares)	0
Common stock, par value (in dollars per share)	$ 0.001
Common stock, shares authorized (in shares)	500,000,000
Common stock, shares issued (in shares)	94,858,156
Common stock, shares outstanding (in shares)	94,858,156

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Operating Activities
Net income (loss) attributable to Adient	$ (120)	$ 1,108	$ (547)
Income attributable to noncontrolling interests	80	82	61
Net income (loss)	(40)	1,190	(486)
Adjustments to reconcile net income (loss) to cash provided (used) by operating activities:
Depreciation	298	285	295
Amortization of intangibles	52	45	37
Pension and postretirement benefit expense (benefit)	(2)	(16)	23
Pension and postretirement contributions, net	(16)	(23)	(19)
Equity in earnings of partially-owned affiliates, net of dividends received (includes purchase accounting amortization of $2, $5 and $3, respectively)	4	44	24
(Gain) on sale of / impairment of nonconsolidated partially owned affiliates	10	(1,214)	231
Premium paid on repurchase of debt	38	50	0
Retrospective recoveries of Brazil indirect tax credits	(29)	(38)	0
Derivative loss on the 2021 Yanfeng Transaction	3	30	0
Deferred income taxes	5	40	(33)
Non-cash restructuring and impairment charges	14	11	53
Loss (gain) on divestitures - net	0	26	13
Equity-based compensation	29	36	15
Other	17	21	24
Changes in assets and liabilities:
Receivables	(576)	483	190
Inventories	(62)	(263)	78
Other assets	32	82	140
Restructuring reserves	(57)	(136)	(80)
Accounts payable and accrued liabilities	542	(388)	(251)
Accrued income taxes	12	(5)	(8)
Cash provided (used) by operating activities	274	260	246
Investing Activities
Capital expenditures	(227)	(260)	(326)
Sale of property, plant and equipment	20	30	15
Settlement of derivative contracts	(30)	(12)	10
Acquisition of businesses, net of cash acquired	(19)	(211)	0
Business divestitures	740	785	499
Changes in long-term investments	0	0	(37)
Loans to affiliates	0	15	0
Other	0	0	5
Cash provided (used) by investing activities	484	347	166
Financing Activities
Increase (decrease) in short-term debt	(14)	(5)	(16)
Increase (decrease) in long-term debt	0	214	600
Repayment of long-term debt	(987)	(895)	(108)
Debt financing costs	(1)	(8)	(10)
Cash paid to acquire a noncontrolling interest	(153)	0	0
Dividends paid to noncontrolling interests	(106)	(69)	(71)
Other	(12)	(7)	(2)
Cash provided (used) by financing activities	(1,273)	(770)	393
Effect of exchange rate changes on cash and cash equivalents	(59)	8	(34)
Increase (decrease) in cash and cash equivalents, including cash classified within current assets held for sale	(574)	(155)	771
Less: cash classified within current assets held for sale	0	(16)	(3)
Increase (decrease) in cash and cash equivalents	(574)	(171)	768
Cash and cash equivalents at beginning of period	1,521	1,692	924
Cash and cash equivalents at end of period	$ 947	$ 1,521	$ 1,692

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Statement of Cash Flows [Abstract]
Purchase accounting amortization	$ 2	$ 5	$ 3

Consolidated Statement of Share

Consolidated Statement of Shareholders' Equity - USD ($) $ in Millions	Total	Cumulative effect, period of adoption, adjustment	Shareholders' Equity Attributable to Adient	Shareholders' Equity Attributable to Adient Cumulative effect, period of adoption, adjustment	Ordinary Shares, par value	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Retained Earnings (Accumulated Deficit) Cumulative effect, period of adoption, adjustment	Accumulated Other Comprehensive Income (Loss)	Shareholders' Equity Attributable to Noncontrolling Interests
Beginning balance at Sep. 30, 2019	$ 2,189	$ (4)	$ 1,848	$ (4)	$ 0	$ 3,962	$ (1,545)	$ (4)	$ (569)	$ 341
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(505)		(547)				(547)			42
Foreign currency translation adjustments	(65)		(76)						(76)	11
Realized and unrealized gains (losses) on derivatives	(20)		(20)						(20)
Employee retirement plans	0
Dividends attributable to noncontrolling interests	(54)									(54)
Change in noncontrolling interest share	(18)									(18)
Share based compensation and other	12		12			12
Ending balance at Sep. 30, 2020	1,535		1,213		0	3,974	(2,096)		(665)	322
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,165		1,108				1,108			57
Foreign currency translation adjustments	24		17						17	7
Realized and unrealized gains (losses) on derivatives	20		20						20
Employee retirement plans	1		1						1
Dividends attributable to noncontrolling interests	(42)									(42)
Change in noncontrolling interest share	(3)
Share based compensation and other	18		17			17				1
Ending balance at Sep. 30, 2021	2,718		2,376		0	3,991	(988)		(627)	342
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(75)		(120)				(120)			45
Foreign currency translation adjustments	(239)		(219)						(219)	(20)
Realized and unrealized gains (losses) on derivatives	0
Employee retirement plans	1		1						1
Dividends attributable to noncontrolling interests	(53)									(53)
Purchase of subsidiary shares from noncontrolling interest	0		12			12				(12)
Share based compensation and other	23		23			23
Ending balance at Sep. 30, 2022	$ 2,375		$ 2,073		$ 0	$ 4,026	$ (1,108)		$ (845)	$ 302

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies	12 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	1. Basis of Presentation and Summary of Significant Accounting Policies On October 31, 2016, Adient plc ("Adient") became an independent company as a result of the separation of the automotive seating and interiors business (the "separation") from Johnson Controls International plc ("the former Parent"). Adient was incorporated under the laws of Ireland in fiscal 2016 for the purpose of holding these businesses. Adient's ordinary shares began trading "regular-way" under the ticker symbol "ADNT" on the New York Stock Exchange on October 31, 2016. Upon becoming an independent company, the capital structure of Adient consisted of 500 million authorized ordinary shares and 100 million authorized preferred shares (par value of $0.001 per ordinary and preferred share). The number of Adient ordinary shares issued on October 31, 2016 was 93,671,810. Adient is a global leader in the automotive seating supplier industry. Adient has a leading market position in the Americas, Europe and China, and has longstanding relationships with the largest global original equipment manufacturers, or OEMs, in the automotive space. Adient's proprietary technologies extend into virtually every area of automotive seating solutions, including complete seating systems, frames, mechanisms, foam, head restraints, armrests and trim covers. Adient is an independent seat supplier with global scale and the capability to design, develop, engineer, manufacture, and deliver complete seat systems and components in every major automotive producing region in the world. The consolidated financial statements of Adient have been prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP"). The global automotive industry has continued to experience unprecedented supply chain and other disruptions over the past year related to semiconductor chip shortages, hostilities in Ukraine and localized COVID-19 lockdowns in China. These disruptions have led to unplanned downtime at Adient’s production facilities, often with very little warning, which results in operating inefficiencies and limits Adient’s ability to adequately mitigate such inefficiencies. The automotive industry has also experienced a period of rising input costs and potential shortages related to energy (particularly in EMEA as a result of the conflict in Ukraine), freight and commodities as well as facing an environment of unfavorable foreign currency exchange and rising interest rates. In addition, Adient, along with the automotive industry, has experienced and continues to face wage inflationary pressures as a result of constrained labor availability, particularly in certain jurisdictions in EMEA. COVID-19 and related variants and sub-variants, also continues to be present throughout the world, including in all global and regional markets served by Adient. The elevated COVID-19 rates in China led to lockdowns at various times during fiscal 2022, negatively impacting the automotive production levels in that region, along with creating further supply chain disruptions. As a result of these disruptions, new vehicle sales continue to be significantly lower than historical and previously projected pre-pandemic sales levels. Refer to the consolidated results of operations and segment analysis discussion below for additional information on the impacts of these items on Adient's results. Refer to Note 3, "Acquisitions and Divestitures," of the notes to the consolidated financial statements for additional information on the impacts from the Russia/Ukraine conflict including Adient’s withdrawal from and sale of operations in Russia. Principles of Consolidations Adient consolidates its wholly-owned subsidiaries and those entities in which it has a controlling interest. Investments in partially-owned affiliates are accounted for by the equity method when Adient's interest exceeds 20% and does not have a controlling interest. Consolidated VIEs Based upon the criteria set forth in the Financial Accounting Standards Board (the FASB) Accounting Standards Codification (ASC) 810, "Consolidation," Adient has determined that it was the primary beneficiary in two variable interest entities (VIEs) for the reporting periods ended September 30, 2022 and 2021, respectively, as Adient absorbs significant economics of the entities and has the power to direct the activities that are considered most significant to the entities. The two VIEs manufacture seating products in North America for the automotive industry. Adient funds the entities' short-term liquidity needs through revolving credit facilities and has the power to direct the activities that are considered most significant to the entities through its key customer supply relationships. The carrying amounts and classification of assets (none of which are restricted) and liabilities included in Adient's consolidated statements of financial position for the consolidated VIEs are as follows: September 30, (in millions) 2022 2021 Current assets $ 262 $ 158 Noncurrent assets 113 88 Total assets $ 375 $ 246 Current liabilities $ 233 $ 143 Noncurrent liabilities 14 8 Total liabilities $ 247 $ 151 Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. The consolidated financial statements reflect management's estimates as of the reporting date. Actual results could differ from those estimates. Fair Value of Financial Instruments The fair values of cash and cash equivalents, accounts receivable, short-term debt and accounts payable approximate their carrying values. See Note 10, "Derivative Instruments and Hedging Activities," and Note 11, "Fair Value Measurements," of the notes to consolidated financial statements for fair value of financial instruments, including derivative instruments and hedging activities. Cash and Cash Equivalents Adient considers all highly liquid investments with a maturity of three months or less when purchased to be cash equivalents. Cash is managed by legal entity, with cash pooling agreements in place for all participating entities on a global basis, as applicable. Receivables Receivables consist of amounts billed and currently due from customers and revenues that have been recognized for accounting purposes but not yet billed to customers. Adient extends credit to customers in the normal course of business and maintains an allowance for doubtful accounts resulting from the inability or unwillingness of customers to make required payments. The allowance for doubtful accounts is based on historical experience, existing economic conditions and any specific customer collection issues Adient has identified. Adient enters into supply chain financing programs in certain domestic and foreign jurisdictions to either sell or discount accounts receivable without recourse to third-party institutions. Sales or discounts of accounts receivable are reflected as a reduction of accounts receivable on the consolidated statements of financial position and the proceeds are included in cash flows from operating activities in the consolidated statements of cash flows. As of September 30, 2022 and 2021, $269 million and $132 million have been funded under these programs, respectively. Inventories Inventories are stated at the lower of cost or market. Cost is determined using the first-in, first-out ("FIFO") method. Finished goods and work-in-process inventories include material, labor and manufacturing overhead costs. Pre-Production Costs Related to Long-Term Supply Arrangements Adient's policy for engineering, research and development, and other design and development costs related to products that will be sold under long-term supply arrangements requires such costs to be expensed as incurred or capitalized if reimbursement from the customer is contractually assured. Income related to recovery of these costs is recorded within selling, general and administrative expense in the consolidated statements of income. At September 30, 2022 and 2021, Adient recorded within the consolidated statements of financial position $239 million and $278 million, respectively, of engineering and research and development costs for which customer reimbursement is contractually assured. The reimbursable costs are recorded in other current assets if reimbursement will occur in less than one year and in other noncurrent assets if reimbursement will occur beyond one year. At September 30, 2022, Adient had $73 million and $166 million of reimbursable costs recorded in current and noncurrent assets, respectively. At September 30, 2021, Adient had $66 million and $212 million of reimbursable costs recorded in current and noncurrent assets, respectively. Costs for molds, dies and other tools used to make products that will be sold under long-term supply arrangements are capitalized within property, plant and equipment if Adient has title to the assets or has the non-cancelable right to use the assets during the term of the supply arrangement. Capitalized items, if specifically designed for a supply arrangement, are amortized over the term of the arrangement; otherwise, amounts are amortized over the estimated useful lives of the assets. The carrying values of assets capitalized in accordance with the foregoing policy are periodically reviewed for impairment whenever events or changes in circumstances indicate that its carrying amount may not be recoverable. At September 30, 2022 and 2021, approximately $53 million and $62 million, respectively, of costs for molds, dies and other tools were capitalized within property, plant and equipment which represented assets to which Adient had title. In addition, at September 30, 2022, Adient recorded within the consolidated statements of financial position in other current and noncurrent assets $74 million and $15 million, respectively, of costs for molds, dies and other tools for which customer reimbursement is contractually assured. At September 30, 2021, Adient recorded within the consolidated statements of financial position in other current and noncurrent assets $77 million and $8 million, respectively, of costs for molds, dies and other tools for which customer reimbursement is contractually assured. Property, Plant and Equipment Property, plant and equipment are recorded at cost. Depreciation is provided over the estimated useful lives of the respective assets using the straight-line method for financial reporting purposes and accelerated methods for income tax purposes. The estimated useful lives range from 3 to 40 years for buildings and improvements and from 3 to 15 years for machinery and equipment. Leases On October 1, 2019, Adient adopted Accounting Standards Codification Topic 842, "Leases" ( ASC 842 Operating lease right-of-use (ROU) assets and liabilities are recognized based on the present value of future minimum lease payments over the lease term at commencement dates. ROU assets also include payments made in advance and exclude lease incentives. Lease terms may include options to extend or terminate the lease when it is reasonably certain that such options are to be exercised. Adient uses its incremental borrowing rate, which is the rate of interest it would pay to borrow on a collateralized basis over a similar term to the lease in a similar economic environment, for discounting lease consideration as most lease agreements do not provide an implicit rate. Refer to Note 8, “Leases” of the notes to consolidated financial statements for more information regarding Adient’s leases. Goodwill and Other Intangible Assets Goodwill reflects the cost of an acquisition in excess of the fair values assigned to identifiable net assets acquired. Adient reviews goodwill for impairment during the fourth fiscal quarter or more frequently if events or changes in circumstances indicate the asset might be impaired. Adient performs impairment reviews for its reporting units, which have been determined to be Adient's reportable segments using a fair value method based on management's judgments and assumptions or third party valuations. The fair value of a reporting unit refers to the price that would be received to sell the unit as a whole in an orderly transaction between market participants at the measurement date. In estimating the fair value, Adient primarily uses an income approach utilizing discounted cash flow analyses. Adient also uses a market approach utilizing published multiples of earnings of comparable entities with similar operational and economic characteristics to further support the fair value estimates. The inputs utilized in the analyses are classified as Level 3 inputs within the fair value hierarchy as defined in ASC 820, "Fair Value Measurement." The estimated fair value is then compared with the carrying amount of the reporting unit, including recorded goodwill. An impairment is recorded to the extent the estimated fair value is below the carrying amount of the reporting unit. Intangible assets with definite lives are amortized over their estimated useful lives and are subject to impairment testing if events or changes in circumstances indicate that the asset might be impaired. Impairment of Long-Lived Assets Adient reviews long-lived assets, including property, plant and equipment and other intangible assets with definite lives, for impairment whenever events or changes in circumstances indicate that the asset's carrying amount may not be recoverable. Adient conducts its long-lived asset impairment analyses in accordance with ASC 360-10-15, "Impairment or Disposal of Long-Lived Assets." ASC 360-10-15 requires Adient to group assets and liabilities at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities and evaluate the asset group against the sum of the undiscounted future cash flows. If the undiscounted cash flows do not indicate the carrying amount of the asset is recoverable, an impairment charge is measured as the amount by which the carrying amount of the asset group exceeds its fair value based on discounted cash flow analysis or appraisals. Impairment of Investments in Partially-Owned Affiliates Adient monitors its investments in partially-owned affiliates for indicators of other-than-temporary declines in value on an ongoing basis. If Adient determines that an other-than-temporary decline in value has occurred, it recognizes an impairment loss, which is measured as the difference between the recorded book value and the fair value of the investment. Fair value is generally determined using an income approach based on discounted cash flows or negotiated transaction values. Refer to Note 18, "Nonconsolidated Partially-Owned Affiliates," of the notes to consolidated financial statements for more information on Adient’s partially-owned affiliates. Revenue Recognition Adient provides production and service parts to its customers under awarded multi-year programs. The duration of a program is generally consistent with the life cycle of a vehicle, however, an awarded program does not reach the level of a performance obligation until Adient receives either a purchase order and/or a materials release from the customer for a specific number of parts at a specified price, at which point an enforceable contract exists. Sales revenue is recognized at the point in time when parts are shipped and control has transferred to the customer, at which point an enforceable right to payment exists. Contracts may provide for annual price reductions over the production life of the awarded program, and prices are adjusted on an ongoing basis to reflect changes in product content/cost and other commercial factors. The amount of revenue recognized reflects the consideration that Adient expects to be entitled to in exchange for such products based on purchase orders, annual price reductions and ongoing price adjustments. Refer to Note 2, "Revenue Recognition," of the notes to consolidated financial statements for information on Adient's revenue recognition. Customers Essentially all of Adient's sales are to the automotive industry. Adient's most significant customers include Stellantis N.V. which comprised 12% of consolidated net sales in fiscal 2022, Stellantis N.V. and Volkswagen Group which comprised 13% and 11% of consolidated net sales, respectively, in fiscal 2021, and Stellantis N.V. and Volkswagen Group which comprised 10% and 10% of consolidated net sales in fiscal 2020. Research and Development Costs Expenditures for research activities relating to product development and improvement (other than those expenditures that are contractually guaranteed for reimbursement from the customer) are charged against income as incurred and included within selling, general and administrative expenses in the consolidated statements of income. Such expenditures for the years ended September 30, 2022, 2021 and 2020 were $322 million, $316 million and $370 million, respectively. A portion of these costs associated with these activities are reimbursed by customers and, for the fiscal years ended September 30, 2022, 2021 and 2020 were $194 million, $210 million and $223 million, respectively. Foreign Currency Translation Substantially all of Adient's international operations use the respective local currency as the functional currency. Assets and liabilities of international entities have been translated at period-end exchange rates, and income and expenses have been translated using average exchange rates for the period. Monetary assets and liabilities denominated in non-functional currencies are adjusted to reflect period-end exchange rates. The resulting translation adjustments are accumulated as a component of accumulated other comprehensive income (AOCI). The aggregate transaction gains (losses) included in net income for the years ended September 30, 2022, 2021 and 2020 were $6 million, $(8) million and $(25) million, respectively. Derivative Financial Instruments The fair values of all derivatives are recorded in the consolidated statements of financial position. The change in a derivative's fair value is recorded each period in current earnings or accumulated other comprehensive income, depending on whether the derivative is designated as part of a hedge transaction and if so, the type of hedge transaction. Refer to Note 10, "Derivative Instruments and Hedging Activities," and Note 11, "Fair Value Measurements," of the notes to consolidated financial statements for disclosure of Adient's derivative instruments and hedging activities. Stock-Based Compensation Stock-based compensation is initially measured at the fair value of the awards on the grant date and is recognized in the financial statements over the period the employees are required to provide services in exchange for the awards. The fair value of restricted stock awards is based on the number of units granted and the stock price on the grant date. The fair value of performance-based share unit, or PSU, awards is based on the stock price at the grant date and the assessed probability of meeting future performance targets. The fair value of cash settled awards are recalculated at the end of each reporting period and the liability and expense are adjusted based on the new fair value. Refer to Note 12, "Stock-Based Compensation," of the notes to consolidated financial statements for Adient's stock based compensation disclosures. Pension and Postretirement Benefits Adient utilizes a mark-to-market approach for recognizing pension and postretirement benefit expenses, including measuring the market related value of plan assets at fair value and recognizing actuarial gains and losses in the fourth quarter of each fiscal year or at the date of a remeasurement event. Refer to Note 14, "Retirement Plans," of the notes to consolidated financial statements for disclosure of Adient's pension and postretirement benefit plans. Income Taxes Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and other loss carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. Adient records a valuation allowance that primarily represents operating and other loss carryforwards for which realization is uncertain. Management judgment is required in determining Adient's provision for income taxes, deferred tax assets and liabilities, and the valuation allowance recorded against Adient's net deferred tax assets. Adient reviews the realizability of its deferred tax assets on a quarterly basis, or whenever events or changes in circumstances indicate that a review is required. In determining the requirement for a valuation allowance, the historical and projected financial results of the legal entity or combined group recording the net deferred tax asset are considered, along with any other positive or negative evidence. Since future financial results may differ from previous estimates, periodic adjustments to Adient's valuation allowances may be necessary. Adient is subject to income taxes in Ireland, the U.S. and other non-U.S. jurisdictions. Judgment is required in determining its worldwide provision for income taxes and recording the related assets and liabilities. In the ordinary course of Adient's business, there are many transactions and calculations where the ultimate tax determination is uncertain. Adient's income tax returns for various fiscal years remain under audit by the respective tax authorities. Although the outcome of tax audits is always uncertain, management believes that it has appropriate support for the positions taken on its tax returns and that its annual tax provisions included amounts sufficient to pay assessments, if any, which may be proposed by the taxing authorities. Nonetheless, the amounts ultimately paid, if any, upon resolution of the issues raised by the taxing authorities may differ materially from the amounts accrued for each year. Adient does not generally provide for additional income taxes which would become payable upon repatriation of undistributed earnings of wholly owned foreign subsidiaries. Adient's intent is for such earnings to be reinvested by the subsidiaries or to be repatriated only when it would be tax efficient. Refer to Note 16, "Income Taxes," of the notes to consolidated financial statements for Adient's income tax disclosures. Earnings Per Share The following table shows the computation of basic and diluted earnings per share: Year Ended (in millions, except per share data) 2022 2021 2020 Numerator: Net income (loss) attributable to Adient $ (120) $ 1,108 $ (547) Denominator: Shares outstanding 94.8 94.2 93.8 Effect of dilutive securities — 1.5 — Diluted shares 94.8 95.7 93.8 Earnings per share: Basic $ (1.27) $ 11.76 $ (5.83) Diluted $ (1.27) $ 11.58 $ (5.83) The effect of common stock equivalents which would have been anti-dilutive was excluded from the calculation of diluted earnings per share for fiscal 2021 and was immaterial. Potentially dilutive securities whose effect would have been antidilutive are excluded from the computation of diluted earnings per share which for fiscal 2022 and 2020 is a result of being in a loss position. New Accounting Pronouncements Standards Adopted During Fiscal 2022 On October 1, 2021, Adient adopted Accounting Standards Codification (ASU) 2018-14 Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20). ASU 2018-14 eliminates, adds, and modifies certain disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The guidance is to be applied on a retrospective basis. The adoption of this guidance on October 1, 2021 did not significantly impact Adient's consolidated financial statements for fiscal 2022. On October 1, 2021, Adient adopted ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. ASU 2019-12 modifies ASC 740, Income Taxes, by simplifying accounting for income taxes. As part of its overall simplification initiative to reduce costs and complexity of applying accounting standards while maintaining or improving the usefulness of the information provided to users of financial statements, the FASB’s amendments may impact both interim and annual reporting periods. The adoption of this guidance on October 1, 2021 did not significantly impact Adient's consolidated financial statements for fiscal 2022. Standards Effective After Fiscal 2022 Adient has considered the ASUs summarized below, effective after fiscal 2022, none of which are expected to significantly impact the consolidated financial statements: Standard Pending Adoption Description Date Effective ASU 2020-06, Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40) ASU 2020-06 simplifies the accounting for certain financial instruments with characteristics of liabilities and equity by reducing the number of accounting models for convertible debt and convertible preferred stock. October 1, 2022 ASU 2021-10, Government Assistance (Topic 832) - Disclosures by Business Entities about Government Assistance The ASU requires annual disclosures of: i) information about the nature of government assistance transactions and the related accounting policy used to account for the transactions, ii) the balance sheet and income statement line items affected by the transactions, and the amounts for each financial statement line item, and iii) significant transaction terms and conditions. October 1, 2022 ASU 2022-04, Liabilities - Supplier Finance Programs (Subtopic 405-50): Disclosure of Supplier Finance Program Obligations The ASU requires buyers of goods and services to disclose information about supplier finance programs if such arrangements are used to manage their payables. The disclosures should include both qualitative and quantitative information including key terms and the amount of outstanding obligations. October 1, 2023

Revenue Recognition

Revenue Recognition	12 Months Ended
	Sep. 30, 2022
Revenue from Contract with Customer [Abstract]
Revenue Recognition	2. Revenue Recognition Adient generates revenue through the sale of automotive seating solutions, including complete seating systems and the components of complete seating systems. Adient provides production and service parts to its customers under awarded multi-year programs. The duration of a program is generally consistent with the life cycle of a vehicle, however, the program can be canceled at any time without cause by the customer. Programs awarded to Adient to supply parts to its customers do not contain a firm commitment by the customer for volume or price and do not reach the level of a performance obligation until Adient receives either a purchase order and/or a materials release from the customer for a specific number of parts at a specified price, at which point an enforceable contract exists. Sales revenue is generally recognized at the point in time when parts are shipped and control has transferred to the customer, at which point an enforceable right to payment exists. Contracts may provide for annual price reductions over the production life of the awarded program, and prices are adjusted on an ongoing basis to reflect changes in product content/cost and other commercial factors. The amount of revenue recognized reflects the consideration that Adient expects to be entitled to in exchange for such products based on purchase orders, annual price reductions and ongoing price adjustments (some of which are accounted for as variable consideration and subject to being constrained), net of the impact, if any, of consideration paid to the customer. In a typical arrangement with the customer, purchase orders are issued for pre-production activities which consist of engineering, design and development, tooling and prototypes for the manufacture and delivery of component parts. Adient has concluded that these activities are not in the scope of ASC 606, “Revenue from Contracts with Customers,” and for that reason, there have been no changes to how Adient accounts for reimbursable pre-production costs. Adient includes shipping and handling fees billed to customers in revenue, while including costs of shipping and handling in cost of sales. Taxes collected from customers are excluded from revenue and credited directly to obligations to the appropriate government agencies. Payment terms with customers are established based on customary industry and regional practices. Adient has evaluated the terms of its arrangements and determined that they do not contain significant financing components. Contract assets primarily relate to the right to consideration for work completed, but not billed at the reporting date on contracts with customers. The contract assets are transferred to receivables when the rights become unconditional. Contract liabilities primarily relate to contracts where advance payments or deposits have been received, but performance obligations have not yet been satisfied and revenue has not been recognized. No significant contract assets or liabilities exist at September 30, 2022. As described above, the issuance of a purchase order and/or a materials release by the customer represents the point at which an enforceable contract with the customer exists. Therefore, Adient has elected to apply the practical expedient in ASC 606, paragraph 606-10-50-14 and does not disclose information about the remaining performance obligations that have an original expected duration of one year or less. Refer to Note 17, "Segment Information," of the notes to consolidated financial statements for disaggregated revenue by geographical market.

Acquisitions and Divestitures

Acquisitions and Divestitures	12 Months Ended
	Sep. 30, 2022
Business Combination and Asset Acquisition [Abstract]
Acquisitions and Divestitures	3. Acquisitions and Divestitures 2021 Yanfeng Transaction On March 12, 2021, Adient, Yanfeng Automotive Trim Systems Company Ltd. (“Yanfeng”), Yanfeng Adient Seating Co., Ltd. (“YFAS”), a joint venture owned, directly or indirectly, by Yanfeng (50.01%) and Adient (49.99%), and KEIPER Seating Mechanisms Co., Ltd. (f/k/a Adient Yanfeng Seating Mechanisms Co., Ltd. (“AYM” or “KEIPER”), a joint venture owned, directly or indirectly, by Yanfeng (50%) and Adient (50%), entered into a Master Agreement (the “2021 Agreement”), pursuant to which the parties agreed to, among other things, transactions that resulted in the sale of Adient’s 49.99% interest in YFAS to Yanfeng, the sale of Adient’s ownership interests in 3 other related joint ventures (ranging from 10% to 25%) to YFAS/KEIPER, and the purchase of YFAS’s 50% interest in Chongqing Adient Automotive Components Co., Ltd. (“CQADNT”) and YFAS’s 100% interest in Adient (Langfang) Seating Co., Ltd. (“LFADNT”) (collectively, the “2021 Yanfeng Transaction”). The 2021 Yanfeng Transaction closed on September 30, 2021 (“Closing Date”). As a result of the 2021 Yanfeng Transaction, Adient received net cash proceeds of $1,141 million ($489 million in September 2021 and $652 million in December 2021) for the sale of Adient’s 49.99% interest in YFAS to Yanfeng, $100 million as the final cash dividend from YFAS, $59 million for the sale of Adient’s ownership interests in the 3 other related joint ventures, $54 million for granting a license of intellectual property to Yanfeng for use on a non-exclusive and perpetual basis, and a business consulting fee of $13 million. Adient also made a net payment of $211 million to Yanfeng related to the purchase CQADNT and LFADNT (the purchase price of $271 million, less $60 million cash acquired) on the Closing Date. In conjunction with the 2021 Yanfeng Transaction, Adient provided Chongqing Boxun Industrial Co., Ltd. (“Boxun”), which owned 25% of CQADNT, an option to sell its interest in CQADNT. This option was reflected as $194 million of redeemable noncontrolling interest on Adient’s statement of financial position as of September 30, 2021. Boxun exercised its option in October 2021, and Adient acquired Boxun’s 25% interest effective January 2022. The total payment to Boxun from Adient was approximately $200 million, of which $15 million of historical dividends were paid in December 2021, and $185 million, including $32 million of historical dividends, was paid later in fiscal 2022. With the acquisitions of Boxun’s 25% and YFAS’s 50% interest of CQADNT, Adient owns 100% of CQADNT effective January 2022. As a result of the 2021 Agreement, Adient received $41 million during fiscal 2022 representing the remaining balance of proceeds from the sale of its interest in Yanfeng Global Automotive Interior Systems Co. ("YFAI"), a joint venture previously owned, directly or indirectly, by Yanfeng (70%) and Adient (30%), which was part of the 2020 Yanfeng Transaction (as defined and described in Form 10-K for the fiscal year ended September 30, 2021). The acquisition of CQADNT and LFADNT was accounted for using the acquisition method, and the operating results and cash flows of CQADNT and LFADNT have been included in Adient's consolidated financial statements since October 1, 2021. The acquisitions are expected to provide substantial synergies through vertical integration, purchasing and logistics improvements. The acquisitions also provide for an immediate controlled manufacturing presence in strategic locations in China. Adient recorded a purchase price allocation for the assets acquired and liabilities assumed based on their estimated fair values as of the September 30, 2021 acquisition date. The purchase price adjustments and allocation is as follows: Fair value allocation (in millions) CQADNT LFADNT Cash $ 55 $ 5 Accounts receivable 296 2 Inventory 37 5 Property, plant and equipment 86 8 Other assets 39 2 Goodwill 181 8 Intangible assets 234 6 Accounts payable (252) (19) Other liabilities (121) (4) Subtotal 555 13 Less: Interest already owned 103 — Less: Redeemable noncontrolling interest 194 — Total purchase consideration 258 13 Less: cash acquired 55 5 Net cash paid $ 203 $ 8 The values allocated to CQADNT and LFADNT’s intangible assets of $234 million and $6 million, respectively, primarily consisted of customer relationships and patented technologies which are being amortized on a straight line basis over estimated useful lives of 3 to 12 years. The assets were valued using a combination of an income approach and a relief from royalty approach. These values were considered level 3 measurements under the U.S. GAAP fair value hierarchy. Key assumptions used in the valuation of customer relationships included a rate of return of 13.5% and the life of the relationship of approximately 12 years. Key assumptions used in the valuation of patented technologies included a rate of return of 13.5% and the life of the technologies of approximately 3 years. The allocation of the purchase price to goodwill and intangible assets was based on the valuations performed to determine the fair value of the net assets as of the acquisition date. Adient expensed $14 million of acquisition costs related to the 2021 Yanfeng Transaction during the year ended September 30, 2021. If the acquisitions of CQADNT and LFADNT had occurred on October 1, 2019, Adient’s net sales and net income attributable to Adient for fiscal 2021 would have been $14,529 million and $1,142 million, respectively, and Adient’s net sales and net loss attributable to Adient for fiscal 2020 would have been $13,250 million and $(527) million, respectively. This unaudited pro forma information includes actual results of the entities and adjustments to amortization expense that would have been recognized due to acquired intangible assets, and related income tax effects. The unaudited pro forma financial information is not indicative of the operational results that would have been obtained had the transactions actually occurred as of that date, nor is it necessarily indicative of Adient’s future operational results. In fiscal 2022, Adient entered into an agreement whereby Adient would purchase all of the issued and outstanding equity interest in Nantong Yanfeng Adient Seating Trim Co., Ltd. (“YFAT”) held by KEIPER for ¥150 million ($24 million). Adient made an initial deposit of ¥75 million ($12 million) in fiscal 2022, which represents 50% of the estimated purchase price (reflected within other current assets as of September 30, 2022). The transaction is subject to a public bidding process and other customary regulatory approvals, and is expected to be completed during the first half of fiscal 2023. The remaining 50% of the estimated purchase price will be paid at the time of completion of the transaction. Also in fiscal 2022, Adient has entered into agreements whereby Adient would transfer all of the issued and outstanding equity interests in two joint ventures in China held directly by Adient, each of which represents 25% of their total issued and outstanding equity interests, to Yanfeng for $3 million. As a result, Adient concluded that indicators of other-than-temporary impairment were present related to the investments in these joint ventures, and recorded a non-cash impairment charge of $3 million during the second quarter of fiscal 2022. The transactions are expected to be completed during the first half of fiscal 2023. Russia/Ukraine conflict Following Russia's invasion of Ukraine in February 2022, Adient determined to withdraw from the Russian market. Adient recorded a charge of $5 million during fiscal 2022 in conjunction with completion of the withdrawal from and sale of its Russian operations for one ruble. SJA On March 31, 2021, Adient sold its 50% equity interest in Shenyang Jinbei Adient Automotive Components Co., Ltd. ("SJA") to the joint venture partner for $58 million, which resulted in a $33 million one-time gain recognized during the second quarter of fiscal 2021. Fabrics On September 30, 2020, Adient closed on the sale of its automotive fabrics manufacturing business including the lamination business to Sage Automotive Interiors for net proceeds of approximately $170 million, net of $4 million of cash divested within the business. Proceeds from the transaction were used by Adient for general corporate purposes and to pay down a portion of Adient’s debt. A minimal gain was recorded as a result of the transaction after allocating $80 million of goodwill to the disposed business. The sale transaction included 11 facilities globally and approximately 1,300 employees. For fiscal year 2020, the fabrics manufacturing business recorded $99 million of third party sales and a nominal amount of pre-tax income. 2020 Yanfeng Transaction On January 31, 2020 (as amended on June 24, 2020), Adient, Yanfeng, KEIPER, YFAS and YFAI entered into a Master Agreement (the “2020 Agreement”, collectively referred to as “2020 Yanfeng Transaction”), pursuant to which the parties have agreed, among other things, that Adient would transfer all of the issued and outstanding equity interest in YFAI held, directly or indirectly, by Adient, which represents 30% of YFAI’s total issued and outstanding equity interest, to Yanfeng for $369 million, of which $309 million was paid in fiscal 2020, $19 million in fiscal 2021, and $41 million in fiscal 2022. Upon the closing of the transaction, an intangible asset of $92 million was recorded associated with the YFAS joint venture extension to be amortized over the 18-year term of the extension. The intangible asset was subsequently written off in fiscal 2021 as a result of the 2021 Yanfeng Transaction. As a result of the January 31, 2020 agreement, Adient concluded that indicators of other-than-temporary impairment were present related to the investment in YFAI and recorded a non-cash impairment of $231 million in fiscal 2020. The impairment was determined based on combining the fair value of consideration received for all transactions contemplated within the 2020 Agreement, including an estimated fair value of the YFAS joint venture extension, and allocating the total consideration received to the individual transactions based on relative fair values. Adient estimated the fair value of the individual transactions using both an income approach and market approach. The inputs utilized in the fair value analyses of the transactions are classified as level 3 inputs within the fair value hierarchy as defined in ASC 820, "Fair Value Measurement" and primarily consisted of expected future operating margins and cash flows of YFAI, estimated production volumes, estimated dividend payments from YFAS over the extension period, estimated terminal values of YFAS, market comparables, weighted-average costs of capital (YFAI - 15.0%, YFAS - 10.5%), and noncontrolling interest discounts. As a result of the pending divestiture of the YFAI investment and the corresponding impairment, Adient ceased recognizing equity income from YFAI. RECARO During fiscal 2020, Adient sold the RECARO automotive high performance seating systems business (“RECARO”) to a group of investors for de minimis proceeds. As a result of the sale, Adient recorded a loss of $21 million. Adient Aerospace Adient Aerospace, LLC ("Adient Aerospace") became operational on October 11, 2018 with Adient’s initial ownership position in Adient Aerospace being 50.01%. Initial contributions of $28 million were made by each partner. During fiscal 2020, Adient reached an agreement with Boeing in which Adient’s ownership position was reduced to 19.99%, resulting in the deconsolidation of Adient Aerospace on that date, including $37 million of cash. Adient recorded a $4 million loss as a result of the transaction in the Americas segment, including $21 million of allocated goodwill. Adient Aerospace develops, manufactures, and sells a portfolio of seating products to airlines and aircraft leasing companies for installation on Boeing and other OEM commercial airplanes, for both production line-fit and retrofit configurations. All of the acquisitions and divestiture transactions described above align with Adient's strategy of focusing on its core, high-volume seating business. Assets held for sale During fiscal 2022, Adient committed to sell certain assets in EMEA. As a result, these assets were classified as assets held for sale and were required to be adjusted to the lower of fair value less cost to sell or carrying value. This resulted in an impairment charge of $6 million. The impairment was measured using third party sales pricing to determine fair values of the assets. The inputs utilized in the analyses are classified as Level 3 inputs within the fair value hierarchy as defined in ASC 820, "Fair Value Measurement. During fiscal 2021, Adient committed to sell certain assets in France and Turkey. As a result, these assets were classified as assets held for sale (including an allocation of $11 million of goodwill) and were required to be adjusted to the lower of fair value less cost to sell or carrying value. This resulted in Adient recording an impairment charge of $9 million within restructuring and impairment costs on the consolidated statement of income (loss) related to the assets in France. The impairment was measured using third party sales pricing to determine fair values of the assets. The inputs utilized in the analyses are classified as Level 3 inputs within the fair value hierarchy as defined in ASC 820, "Fair Value Measurement." The sale of the assets in France was completed in fiscal 2021 for minimal proceeds while the sale of the assets in Turkey was completed in fiscal 2022 for total proceeds of $46 million, of which $36 million was collected at closing, and $10 million was collected later in fiscal 2022.

Inventories

Inventories	12 Months Ended
	Sep. 30, 2022
Inventory Disclosure [Abstract]
Inventories	4. Inventories Inventories consisted of the following: September 30, (in millions) 2022 2021 Raw materials and supplies $ 755 $ 750 Work-in-process 26 29 Finished goods 172 197 Inventories $ 953 $ 976

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Sep. 30, 2022
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	5. Property, Plant and Equipment Property, plant and equipment consisted of the following: September 30, (in millions) 2022 2021 Buildings and improvements $ 1,053 $ 1,167 Machinery and equipment 2,889 3,087 Construction in progress 146 162 Land 82 100 Total property, plant and equipment 4,170 4,516 Less: accumulated depreciation (2,793) (2,909) Property, plant and equipment - net $ 1,377 $ 1,607 There were no material finance leases included in net property, plant and equipment at September 30, 2022 and 2021. As of September 30, 2022, Adient is the lessor of properties included in gross building and improvements for $12 million and accumulated depreciation of $8 million. As of September 30, 2021, Adient is the lessor of properties included in gross building and improvements for $15 million and accumulated depreciation of $9 million. A correction of approximately $1.4 billion to reduce the carrying value of buildings and improvements, machinery and equipment and accumulated depreciation as of September 30, 2021 was recorded related to previously disposed assets.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	6. Goodwill and Other Intangible Assets The changes in the carrying amount of goodwill are as follows: (in millions) Americas EMEA Asia Total Balance at September 30, 2020 $ 606 $ 368 $ 1,083 $ 2,057 Business acquisitions — — 188 188 Business divestitures — (11) — (11) Currency translation and other 1 (3) (20) (22) Balance at September 30, 2021 $ 607 $ 354 $ 1,251 $ 2,212 Currency translation and other — (59) (96) (155) Balance at September 30, 2022 $ 607 $ 295 $ 1,155 $ 2,057 Refer to Note 3, "Acquisitions and Divestitures," of the notes to consolidated financial statements for additional information. Adient performed its annual goodwill impairment test during the fourth quarter of fiscal 2022 using a fair value method based on management's judgments and assumptions regarding future cash flows. These calculations contain uncertainties as they require management to make assumptions about market comparables, future cash flows, and the appropriate discount rates (based on weighted average cost of capital ranging from 17.5% to 21.0%) to reflect the risk inherent in the future cash flows and to derive a reasonable enterprise value and related premium. The estimated future cash flows reflect management's latest assumptions of the financial projections based on current and anticipated competitive landscape, including estimates of revenue based on production volumes over the foreseeable future and long-term growth rates, and operating margins based on historical trends and future cost containment activities. The financial projections considered the impact that the COVID-19 pandemic, supply-chain disruptions, higher commodity, shipping and energy costs, and the Russia/Ukraine conflict are having on Adient’s current and future operations as well as the impact to new vehicle sales in future years. As a result of the test, there was no goodwill impairment recorded for fiscal year 2022. A change in any of these estimates and assumptions, especially as it relates to the extent of the COVID-19 pandemic’s, supply-chain disruptions’ impacts on vehicle production volumes within the automotive industry, the impact of commodity, shipping and energy costs, the impact of the Russia/Ukraine conflict as well as the demand for new vehicle sales once the current operational disruptions are over, could produce significantly lower fair values of Adient's reporting units, which could have a material impact on its results of operations. Adient performed its annual goodwill test during the fourth quarter of fiscal 2021 using the same method and assumptions as described above (based on weighted average cost of capital ranging from 15.0% to 17.5%). As a result of the tests, there was no goodwill impairment recorded in fiscal 2021. Adient's other intangible assets, primarily from business acquisitions valued based on independent appraisals, consisted of: September 30, 2022 September 30, 2021 (in millions) Gross Accumulated Net Gross Accumulated Net Intangible assets Patented technology $ 80 $ (25) $ 55 $ 86 $ (19) $ 67 Customer relationships 560 (163) 397 649 (178) 471 Trademarks 19 (17) 2 26 (21) 5 Miscellaneous 25 (12) 13 24 (12) 12 Total intangible assets $ 684 $ (217) $ 467 $ 785 $ (230) $ 555 On September 30, 2021, Adient acquired CQADNT and LFADNT as part of the 2021 Yanfeng Transaction and recorded $176 million of customer relationships and $60 million of patented technology intangibles. The values of the intangible assets were determined based on independent appraisals. Adient evaluates its other intangible assets for impairment as facts and circumstances warrant. As part of the 2020 Yanfeng Transaction, Adient recorded an intangible asset of $92 million associated with the YFAS joint venture extension to 2038 (reflected in the Miscellaneous line in the table above), to be amortized over the 18-year term of the extension. During fiscal 2021, Adient wrote off the remaining balance of the intangible asset Amortization of other intangible assets for the fiscal years ended September 30, 2022, 2021 and 2020 was $52 million, $45 million and $37 million, respectively. Adient anticipates amortization for fiscal 2023, 2024, 2025, 2026 and 2027 will be approximately $48 million, $47 million, $46 million, $44 million and $41 million, respectively.

Product Warranties

Product Warranties	12 Months Ended
	Sep. 30, 2022
Product Warranties Disclosures [Abstract]
Product Warranties	7. Product Warranties Adient offers warranties to its customers depending upon the specific product and terms of the customer purchase agreement. A typical warranty program requires that Adient replace defective products within a specified time period from the date of sale. Adient records an estimate for future warranty-related costs based on actual historical return rates and other known factors. Based on analysis of return rates and other factors, Adient's warranty provisions are adjusted as necessary. Adient monitors its warranty activity and adjusts its reserve estimates when it is probable that future warranty costs will be different than those estimates. Adient's product warranty liability is recorded in the consolidated statements of financial position in other current liabilities. The changes in Adient's total product warranty liability are as follows: September 30, (in millions) 2022 2021 Balance at beginning of period $ 23 $ 24 Accruals for warranties issued during the period 8 9 Changes in accruals related to pre-existing warranties (including changes in estimates) — (2) Changes in accruals related to business acquisitions — 1 Changes in accruals related to business divestitures — (1) Settlements made (in cash or in kind) during the period (9) (8) Currency translation (1) — Balance at end of period $ 21 $ 23

Leases

Leases	12 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Leases	8. Leases Adient's lease portfolio consists of operating leases for real estate including production facilities, warehouses and administrative offices, equipment such as forklifts and computer servers and laptops, and fleet vehicles. The Company has elected not to record leases with an initial term of 12 months or less on its consolidated statement of financial position. A lease liability and corresponding ROU asset are recognized based on the present value of lease payments. To determine the present value of lease payments, the Company uses its incremental borrowing rate as of lease commencement. The incremental borrowing rate (IBR) is defined as the rate Adient would have to pay to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment. Adient primarily derives its IBR from its debt portfolio, adjusted for collateralization, lease term and jurisdictional factors. The components of lease costs for the years ended September 30, 2022 and 2021 were as follows: Year Ended September 30, (in millions) 2022 2021 2020 Operating lease cost $ 117 $ 125 $ 125 Short-term lease cost 20 20 24 Total lease cost $ 137 $ 145 $ 149 Operating lease right-of-use assets and lease liabilities included in the consolidated statement of financial position were as follows: September 30, (in millions) 2022 2021 Operating leases: Operating lease right-of-use assets Other noncurrent assets $ 266 $ 335 Operating lease liabilities - current Other current liabilities $ 81 $ 89 Operating lease liabilities - noncurrent Other noncurrent liabilities 186 246 $ 267 $ 335 Weighted average remaining lease term: Operating leases 6 years 6 years Weighted average discount rate: Operating leases 5.6 % 5.2 % Maturities of operating lease liabilities and minimum payments for operating leases having initial or remaining non-cancelable terms in excess of one year as of September 30, 2022 were as follows: Fiscal years (in millions) Operating Leases 2023 $ 90 2024 67 2025 46 2026 29 2027 23 Thereafter 55 Total lease payments 310 Less: imputed interest (43) Present value of lease liabilities $ 267 Supplemental cash flow information related to leases was as follows: Year Ended September 30, (in millions) 2022 2021 2020 Right-of-use assets obtained in exchange for lease obligations: Operating leases (non-cash activity) $ 52 $ 109 $ 79 Operating cash flows: Cash paid for amounts included in the measurement of lease liabilities $ 116 $ 126 $ 125 Adient’s finance leases were not significant to the consolidated financial statements during fiscal 2022 and 2021. Refer to Note 9, "Debt and Financing Arrangements," of the notes to consolidated financial statements for additional information.

Debt and Financing Arrangements

Debt and Financing Arrangements	12 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Debt and Financing Arrangements	9. Debt and Financing Arrangements Long-term and short-term debt consisted of the following: September 30, (in millions) 2022 2021 Long-term debt: Term Loan B - LIBOR plus 3.25% due in 2028 $ 988 $ 998 4.875% Notes due in 2026 795 795 3.50% Notes due in 2024 809 1,161 9.00% Notes due in 2025 — 600 European Investment Bank Loan - EURIBOR plus 1.58% due in 2022 — 156 Finance lease obligation 1 1 Less: debt issuance costs (18) (32) Gross long-term debt 2,575 3,679 Less: current portion 11 167 Net long-term debt $ 2,564 $ 3,512 Short-term debt: Other bank borrowings (1) 3 17 Total short-term debt $ 3 $ 17 (1) The weighted average interest rates on short-term debts, based on levels of debt maintained in various jurisdictions, were 6.0% and 3.8% at September 30, 2022 and 2021, respectively. Adient US LLC ("Adient US"), a wholly owned subsidiary of Adient, together with certain of Adient's other subsidiaries, maintains an asset-based revolving credit facility (the “ABL Credit Facility”), which provides for a revolving line of credit up to $1,250 million, including a North American subfacility of up to $950 million and a European subfacility of up to $300 million, subject to borrowing base capacity and certain other restrictions, including a minimum fixed charge coverage ratio. The ABL Credit Facility was set to mature on May 6, 2024, subject to a springing maturity date 91 days earlier if certain amounts remain outstanding at that time under the Term Loan B Agreement (defined below). Adient will pay a commitment fee of 0.25% to 0.375% on the unused portion of the commitments under the asset-based revolving credit facility based on average global availability. Letters of credit are limited to the lesser of (x) $150 million and (y) the aggregate unused amount of commitments under the ABL Credit Facility then in effect. Subject to certain conditions, the ABL Credit Facility may be expanded by up to $250 million in additional commitments. Loans under the ABL Credit Facility may be denominated, at the option of Adient, in U.S. dollars, Euros, Pounds Sterling or Swedish Kroner. The ABL Credit Agreement is secured on a first- priority lien on all accounts receivable, inventory and bank accounts (and funds on deposit therein) and a second-priority lien on all of the tangible and intangible assets of certain Adient subsidiaries. On November 24, 2021, Adient entered into an amendment to its ABL Credit Facility (the “2021 ABL Amendment”) to amend certain terms and provisions, including to (i) change the interest rate benchmark rates applicable under the ABL Credit Facility for borrowings denominated in euro, Swedish krona and pounds sterling to EURIBOR, STIBOR, and SONIA, in each case subject to certain adjustments, and (ii) update the provisions in our ABL Credit Facility by which U.S. dollar LIBOR will eventually be replaced with SOFR or another interest rate benchmark, in each case, to reflect the most recent standards and practices used in the industry. Interest is payable on the ABL Credit Facility at a fluctuating rate of interest determined by reference to LIBOR, in the case of amounts outstanding in dollars, EURIBOR, in the case of amounts outstanding in euros, STIBOR, in the case of amounts outstanding in Swedish krona and SONIA, in the case of amounts outstanding in pounds sterling, in each case, plus an applicable margin of 1.50% to 2.00%. On November 2, 2022, Adient entered into an amendment to its ABL Credit Facility (the “2022 ABL Amendment”) to amend certain terms and provisions, including to (i) extend its maturity date to November 2, 2027 (subject to certain springing maturity provisions), (ii) replace LIBOR with Term SOFR as the benchmark rate of interest for U.S. dollar borrowings thereunder and (iii) provide flexibility for future amendments to the ABL Credit Facility to incorporate certain sustainability-based pricing provisions. Other key terms and conditions of the facility remain unchanged. As of September 30, 2022, Adient had not drawn down on the ABL Credit Facility and had availability under this facility of $899 million (net of $13 million of letters of credit). In addition, Adient US and Adient Global Holdings S.à r.l., a wholly-owned subsidiary of Adient, maintain a term loan credit agreement, as amended in fiscal 2021, (the “Term Loan B Agreement”) that provides for a $1.0 billion senior secured term loan facility. The Term Loan B Agreement amortizes in equal quarterly installments at a rate of 1.00% per annum of the original principal amount thereof, with the remaining balance due at final maturity on April 8, 2028. Interest on the Term Loan B Agreement accrues at the Eurodollar rate plus an applicable margin equal to 3.25%. The Term Loan B Agreement also permits Adient to incur incremental term loans in an aggregate amount not to exceed the greater of $750 million and an unlimited amount subject to a pro forma first lien secured net leverage ratio of not greater than 1.75 to 1.00 and certain other conditions. Adient paid $7 million related to the fiscal 2021 amendment along with expensing $8 million of previously deferred financing costs to net financing charges. Adient US was also a party to an indenture relating to the issuance of $800 million aggregate principal amount of Senior First Lien Notes. The notes were set to mature on May 15, 2026 and bore interest at a rate of 7.00% per annum. Interest on these notes was payable semi-annually in arrears on November 15 and May 15 of each year. During fiscal 2021, Adient repurchased the full amount of the outstanding balance of the Senior First Lien Notes at a premium of $50 million plus $21 million of accrued and unpaid interest. As a result, $12 million of previously deferred financing costs were expensed to net financing charges. The ABL Credit Facility and Term Loan B Agreement contain covenants that are usual and customary for facilities and debt instruments of this type and that, among other things, restrict the ability of Adient and its restricted subsidiaries to: create certain liens and enter into sale and lease-back transactions; create, assume, incur or guarantee certain indebtedness; pay dividends or make other distributions on, or repurchase or redeem, Adient’s capital stock or certain other debt; make other restricted payments; and consolidate or merge with, or convey, transfer or lease all or substantially all of Adient’s and its restricted subsidiaries’ assets, to another person. These covenants are subject to a number of other limitations and exceptions set forth in the agreements. The agreements also provide for customary events of default, including, but not limited to, cross-default clauses with other debt arrangements, failure to pay principal and interest, failure to comply with covenants, agreements or conditions, and certain events of bankruptcy or insolvency involving Adient and its significant subsidiaries. Adient Global Holdings Ltd. (“AGH”), a wholly-owned subsidiary of Adient, previously maintained $900 million aggregate principal amount of 4.875% USD-denominated unsecured notes due 2026. During the fourth quarter of fiscal 2020, Adient redeemed $103 million of face value of these notes, resulting in a remaining balance of $797 million as of September 30, 2020. Adient further redeemed $2 million of the notes during fiscal 2021, resulting in a remaining balance of $795 million as of September 30, 2022 and 2021. AGH also previously maintained €1.0 billion aggregate principal amount of 3.50% unsecured notes due 2024. In fiscal 2022, Adient repurchased €177 million ($198 million) of the 3.50% unsecured notes due 2024 at a premium of €3 million ($4 million) plus €3 million ($3 million) of accrued and unpaid interest, and expensed €1 million ($1 million) of previously deferred financing costs to net financing charges. As of September 30, 2022, the remaining balance of this debt was €823 million ($809 million). Adient Germany Ltd. & Co. KG, a wholly owned subsidiary of Adient, previously maintained €135 million ($156 million) in an unsecured term loan from the European Investment Bank (“EIB”) due in 2022. The loan bore interest at the 6-month EURIBOR rate plus 158 basis points. During fiscal 2021, Adient repaid $36 million of the EIB loan, triggered in part by the redemption of debt and the sale of the fabrics business in the prior year. Adient fully repaid the remaining balance of the EIB loan in May 2022 upon its maturity. On April 20, 2020, Adient US issued $600 million (net proceeds of $591 million) aggregate principal amount of 9.00% Senior First Lien Notes due 2025. These notes were set to mature on April 15, 2025, provided that if AGH has not refinanced (or otherwise redeemed) in whole its outstanding 3.50% unsecured notes due 2024 or any refinancing indebtedness thereof that matures earlier than 91 days prior to the maturity date of the Senior First Lien Notes due 2025 on or prior to May 15, 2024, these notes will mature on May 15, 2024. Interest on these notes was due on April 15 and October 15 each year, beginning on October 15, 2020. These notes contained covenants that were usual and customary, similar to the covenants as described above. Adient incurred $10 million of debt issuance cost associated with this new debt in fiscal 2020. In fiscal 2022, Adient repurchased the full $600 million of 9.00% Senior First Lien Notes due 2025 at a premium of $34 million plus $19 million of accrued and unpaid interest, and expensed $7 million of previously deferred financing costs to net financing charges. Principal payments required on long-term debt during the next five years are as follows: Year Ended (in millions) 2023 2024 2025 2026 2027 Principal payments $ 11 $ 819 $ 10 $ 805 $ 10 Net Financing Charges Adient's net financing charges in the consolidated statements of income (loss) contained the following components: Year Ended September 30, (in millions) 2022 2021 2020 Interest expense, net of capitalized interest costs $ 161 $ 207 $ 216 Banking fees and debt issuance cost amortization 22 32 18 Interest income (9) (7) (11) Premium paid on repurchase of debt 38 49 — Derivative loss on Yanfeng transaction 3 30 — (Gain) on extinguishment of debt — — (3) Net financing charges $ 215 $ 311 $ 220 Banking fees in fiscal 2022 and 2021 includes $8 million and $20 million, respectively, of one-time accelerated-deferred financing fee charges associated with voluntary repayments of debt and the amendment and extension of Adient's Term Loan B agreement. Total interest paid on both short and long-term debt for the fiscal years ended September 30, 2022, 2021 and 2020 was $192 million, $229 million and $203 million, respectively.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	12 Months Ended
	Sep. 30, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	10. Derivative Instruments and Hedging Activities Adient selectively uses derivative instruments to reduce Adient's market risk associated with changes in foreign currency. Under Adient's policy, the use of derivatives is restricted to those intended for hedging purposes; the use of any derivative instrument for speculative purposes is strictly prohibited. A description of each type of derivative utilized to manage Adient's risk is included in the following paragraphs. In addition, refer to Note 11, "Fair Value Measurements," of the notes to consolidated financial statements for information related to the fair value measurements and valuation methods utilized by Adient for each derivative type. Adient has global operations and participates in the foreign exchange markets to minimize its risk of loss from fluctuations in foreign currency exchange rates. Adient primarily uses foreign currency exchange contracts to hedge certain foreign exchange rate exposures. Adient hedges 70% to 90% of the nominal amount of each of its known foreign exchange transactional exposures. Gains and losses on derivative contracts offset gains and losses on underlying foreign currency exposures. These contracts have been designated as cash flow hedges under ASC 815, "Derivatives and Hedging," and the hedge gains or losses due to changes in fair value are initially recorded as a component of accumulated other comprehensive income (AOCI) and are subsequently reclassified into earnings when the hedged transactions occur and affect earnings. During the second quarter of fiscal 2020, as a result of the COVID-19 impacts and the resulting interruptions to Adient's operations, a loss of $2 million related to ineffective hedges was reclassified to the consolidated statement of income. All contracts were highly effective in hedging the variability in future cash flows attributable to changes in currency exchange rates at September 30, 2022 and 2021, respectively. As of September 30, 2022, the €823 million ($809 million) aggregate principal amount of 3.50% euro-denominated unsecured notes due 2024 was designated as a net investment hedge to selectively hedge portions of Adient's net investment in Europe. The currency effects of Adient's euro-denominated bonds are reflected in the AOCI account within shareholders' equity attributable to Adient where they offset gains and losses recorded on Adient's net investment in Europe. Adient entered into a cross-currency interest rate swap during fiscal 2019 to selectively hedge portions of its net investment in Japan. The currency effects of the cross-currency interest rate swap was reflected in the AOCI account within shareholders' equity attributable to Adient, where they offset gains and losses recorded on Adient's net investment in Japan. The contract matured during fiscal 2021. There was no outstanding Japanese yen denominated cross-currency interest rate swap outstanding as of September 30, 2022. Adient purchased interest rate caps during fiscal 2019 to selectively limit the impact of USD LIBOR increases on its interest payments related to Adient's Term Loan B Agreement. The interest rate caps are designated as cash flow hedges under ASC 815. During fiscal 2021, in conjunction with the Term Loan B Amendment as discussed in Note 9, "Debt and Financing Arrangements," Adient de-designated these zero contracts, the impact of which was not material. The contracts matured in fiscal 2022. As of September 30, 2022, Adient had no outstanding interest rate caps. In conjunction with the 2021 Yanfeng Transaction as described in Note 3, "Acquisitions and Divestitures," Adient entered into two forward foreign currency exchange contracts in fiscal 2021 with total notional amount of approximately ¥7,482 million ($1,123 million) in order to economically hedge the expected proceeds. One contract matured at the end of fiscal 2021 which resulted in a net cash payment of $14 million, and the other contract matured in fiscal 2022. These contracts were treated as freestanding financial instruments with fair value changes recorded in earnings. These contracts resulted in realized and unrealized losses of $14 million and $16 million, respectively, during fiscal 2021, and realized losses of $3 million during fiscal 2022. Refer to Note 9, "Debt and Financing Arrangements," of the notes to consolidated financial statements for more information. Adient entered into a ¥150 million ($23 million) foreign exchange forward contract during the second quarter of fiscal 2022 to selectively hedge portions of its net investment in China. The currency effects of the forward contract are reflected in the AOCI account within shareholder’s equity attributable to Adient, where they offset gains and losses recorded on Adient’s net investment in China. The forward contract matured in early fiscal 2023. The following table presents the location and fair values of derivative instruments and other amounts used in hedging activities included in Adient's consolidated statements of financial position: Derivatives and Hedging Derivatives and Hedging September 30, (in millions) 2022 2021 2022 2021 Other current assets Foreign currency exchange derivatives $ 17 $ 8 $ 3 $ — Other noncurrent assets Foreign currency exchange derivatives — — — 1 Total assets $ 17 $ 8 $ 3 $ 1 Other current liabilities Foreign currency exchange derivatives $ 20 $ 11 $ — $ 13 Other noncurrent liabilities Foreign currency exchange derivatives 2 4 1 — Long-term debt Foreign currency denominated debt 809 1,161 — — Total liabilities $ 831 $ 1,176 $ 1 $ 13 Adient enters into International Swaps and Derivatives Associations (ISDA) master netting agreements with counterparties that permit the net settlement of amounts owed under the derivative contracts. The master netting agreements generally provide for net settlement of all outstanding contracts with a counterparty in the case of an event of default or a termination event. Adient has not elected to offset the fair value positions of the derivative contracts recorded in the consolidated statements of financial position. Collateral is generally not required of Adient or the counterparties under the master netting agreements. As of September 30, 2022 and 2021, no cash collateral was received or pledged under the master netting agreements. The gross and net amounts of derivative instruments and other amounts used in hedging activities are as follows: Assets Liabilities September 30, (in millions) 2022 2021 2022 2021 Gross amount recognized $ 20 $ 9 $ 832 $ 1,189 Gross amount eligible for offsetting (19) (9) (19) (9) Net amount $ 1 $ — $ 813 $ 1,180 The following table presents the effective portion of pretax gains (losses) recorded in other comprehensive income related to cash flow hedges: Year Ended (in millions) 2022 2021 2020 Foreign currency exchange derivatives $ 8 $ 29 $ (37) The following table presents the location and amount of the effective portion of pretax gains (losses) on cash flow hedges reclassified from AOCI into Adient's consolidated statements of income: (in millions) Year Ended 2022 2021 2020 Foreign currency exchange derivatives Cost of sales $ 6 $ 2 $ (16) The following table presents the location and amount of pretax gains (losses) on derivatives not designated as hedging instruments recognized in Adient's consolidated statements of income (loss): (in millions) Year Ended 2022 2021 2020 Foreign currency exchange derivatives Cost of sales $ — $ (4) $ (4) Foreign currency exchange derivatives Net financing charges (33) (30) 1 Total $ (33) $ (34) $ (3) The effective portion of pretax gains (losses) recorded in currency translation adjustment (CTA) within other comprehensive income (loss) related to net investment hedges was $151 million, $17 million and $(84) million for the fiscal years ended September 30, 2022, 2021 and 2020, respectively. For the years ended September 30, 2022, 2021 and 2020, respectively, no gains or losses were reclassified from CTA into income for Adient's outstanding net investment hedges. For the year ended September 30, 2020, a loss of $2 million was recognized in the consolidated statement of income (loss) for the ineffective portion of cash flow hedges. For the years ended September 30, 2022 and 2021, no gains or losses were recognized in income for the ineffective portion of cash flow hedges.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Sep. 30, 2022
Fair Value Disclosures [Abstract]
Fair Value Measurements	11. Fair Value Measurements ASC 820, "Fair Value Measurement," defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. ASC 820 also establishes a three-level fair value hierarchy that prioritizes information used in developing assumptions when pricing an asset or liability as follows: Level 1: Observable inputs such as quoted prices in active markets; Level 2: Inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and Level 3: Unobservable inputs where there is little or no market data, which requires the reporting entity to develop its own assumptions. ASC 820 requires the use of observable market data, when available, in making fair value measurements. When inputs used to measure fair value fall within different levels of the hierarchy, the level within which the fair value measurement is categorized is based on the lowest level input that is significant to the fair value measurement. Recurring Fair Value Measurements The following tables present Adient's fair value hierarchy for those assets and liabilities measured at fair value. Refer to Note 14, "Retirement Plans," of the notes to consolidated financial statements for fair value tables of pension assets. Fair Value Measurements Using: (in millions) Total as of Quoted Prices Significant Significant Other current assets Foreign currency exchange derivatives $ 20 $ — $ 20 $ — Total assets $ 20 $ — $ 20 $ — Other current liabilities Foreign currency exchange derivatives $ 20 $ — $ 20 $ — Other noncurrent liabilities Foreign currency exchange derivatives 3 — 3 — Total liabilities $ 23 $ — $ 23 $ — Fair Value Measurements Using: (in millions) Total as of Quoted Prices Significant Significant Other current assets Foreign currency exchange derivatives $ 8 $ — $ 8 $ — Other noncurrent assets Foreign currency exchange derivatives 1 — 1 — Total assets $ 9 $ — $ 9 $ — Other current liabilities Foreign currency exchange derivatives $ 24 $ — $ 24 $ — Other noncurrent liabilities Foreign currency exchange derivatives 4 — 4 — Total liabilities $ 28 $ — $ 28 $ — Valuation Methods Foreign currency exchange derivatives Adient selectively hedges anticipated transactions and net investments that are subject to foreign exchange rate risk primarily using foreign currency exchange hedge contracts. The foreign currency exchange derivatives are valued under a market approach using publicized spot and forward prices. Changes in fair value on foreign exchange derivatives accounted for as hedging instruments under ASC 815 are initially recorded as a component of AOCI and are subsequently reclassified into earnings when the hedged transactions occur and affect earnings. These contracts were highly effective in hedging the variability in future cash flows attributable to changes in currency exchange rates at September 30, 2022 and 2021, respectively. The changes in fair value of foreign currency exchange derivatives not designated as hedging instruments under ASC 815 are recorded in the consolidated statements of income. Cross-currency interest rate swaps Adient determines the fair value of a cross-currency interest rate swap contract using a market approach which is based on quoted market price for similar instruments in markets. All significant inputs are corroborated by observable market data for the term of such a contract. Adient selectively uses cross-currency interest rate swaps to hedge portions of its net investments. Interest rate caps Adient determines the fair value of an interest rate cap contract using a market approach which is based on quoted market price for identical or similar instruments in markets. All significant inputs are corroborated by observable market data for the term of such a contract. Adient selectively used interest rate caps to limit the impact of floating rate interest payment increases on its Term Loan B Agreement. The interest rate caps were designated as cash flow hedges under ASC 815. As of September 30, 2022, Adient had no interest rate caps outstanding.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Stock-Based Compensation	12. Stock-Based Compensation Adient provides certain key employees equity awards in the form of restricted stock units (RSU) and performance share units (PSUs) under the Adient plc 2016 Omnibus Incentive Plan and the Adient plc 2021 Omnibus Incentive Plan (collectively, the “Plan”). Adient also provides directors with share awards under the Adient plc 2016 Director Share Plan and the Adient plc 2021 Omnibus Incentive Plan. These 2016 plans were adopted in conjunction with the separation. The 2021 plan was adopted in March 2021. Total stock-based compensation cost included in the consolidated statements of income was $29 million, $36 million and $15 million for the fiscal years ended September 30, 2022, 2021 and 2020, respectively. No material income tax benefits were recognized in the consolidated statements of income for the share-based compensation arrangements in any of these years due to tax valuation allowances in those years. In conjunction with the separation, previously outstanding stock-based compensation awards granted under the former Parent's equity compensation programs prior to the separation and held by certain executives and employees of Adient were adjusted and converted into new Adient equity awards using a formula designated to preserve the intrinsic value of the awards. Upon the separation on October 31, 2016, holders of former Parent stock options, RSUs, and SARs generally received one ordinary share of Adient for every ten ordinary shares of the former parent held at the close of business on October 19, 2016, the record date of the distribution, and cash in lieu of fractional shares (if any) of Adient. Accordingly, certain executives and employees of Adient hold converted awards in both the former Parent and Adient shares subsequent to the separation. Converted awards retained the vesting schedule and expiration date of the original awards. Outstanding stock awards related to the former Parent stock are not included in Adient's dilutive share calculation. The following tables present activity related to the granting of awards during the year ended September 30, 2022 along with the composition of outstanding and exercisable awards at September 30, 2022 for remaining former Parent and Adient awards. Restricted Stock The Plan provides for the award of restricted stock or restricted stock units to certain employees. These awards are typically share settled except for certain non-U.S. employees or those who elected to defer past awards settlement until retirement at which point the award would be settled in cash. Cash settled awards are recorded in Adient's consolidated statements of financial position as a liability and adjusted each reporting period for changes in share value until the settlement of the award. Restricted stock awards typically vest over a three year period following the grant date. The Plan allows for different vesting terms on specific grants with approval by Adient's board of directors. A summary of the status of nonvested restricted stock awards at September 30, 2022, and changes for the fiscal year then ended, is presented below: Weighted Restricted Shares/Units Nonvested, September 30, 2021 $ 26.01 1,148,888 Granted $ 46.18 354,148 Vested $ 27.57 (547,123) Forfeited $ 28.91 (83,496) Nonvested, September 30, 2022 $ 32.94 872,417 At September 30, 2022, Adient had approximately $15 million of total unrecognized compensation cost related to nonvested restricted stock arrangements granted. That cost is expected to be recognized over a weighted-average period of 1.7 years. Performance Share Awards The Plan permits the grant of PSU awards. The number of PSUs granted is equal to the PSU award value divided by the closing price of a Adient ordinary share at the grant date. The PSUs are generally contingent on the achievement of predetermined performance goals over a three-year performance period as well as on the award holder's continuous employment until the vesting date. Each PSU that is earned will be settled with an ordinary share of Adient following the completion of the performance period except for certain non-U.S. employees or those who elected to defer a portion or all of past awards until retirement, which would then be settled in cash. Cash settled awards are recorded in Adient's consolidated statements of financial position as a liability and adjusted each reporting period for changes in share value until the settlement of the award. A summary of the status of Adient's nonvested PSUs at September 30, 2022, and changes for the fiscal year then ended is presented below: Weighted Performance Shares/Units Nonvested, September 30, 2021 $ 24.40 1,223,180 Granted $ 46.79 263,573 Vested $ 29.18 (252,149) Forfeited $ 19.78 (165,890) Nonvested, September 30, 2022 $ 29.51 1,068,714 At September 30, 2022, Adient had approximately $18 million of total unrecognized compensation cost related to nonvested performance share units granted. That cost is expected to be recognized over a weighted-average period of 1.8 years. Stock Options No new stock options have been granted under the Plan. Stock options were previously granted to eligible employees prior to the separation from the former Parent. Stock option awards typically vest between two A summary of stock option activity at September 30, 2022, and changes for the year then ended, is presented below: Weighted Shares Weighted Aggregate Outstanding, September 30, 2021 $ 32.77 93,790 Exercised $ 26.36 (40,571) Forfeited or expired $ 27.53 (3,280) Outstanding, September 30, 2022 $ 38.32 49,939 1.2 $ — Exercisable, September 30, 2022 $ 38.32 49,939 1.2 $ — Former Parent outstanding and exercisable, September 30, 2022 $ 25.67 20,971 0 $ — Adient outstanding and exercisable, September 30, 2022 $ 47.48 28,968 2.1 $ — Total outstanding and exercisable, September 30, 2022 $ 38.32 49,939 1.2 $ — There were no stock options granted in fiscal years 2022, 2021 and 2020, respectively. The total intrinsic value of options exercised by Adient employees during the fiscal years ended September 30, 2022, 2021 and 2020 was approximately $1 million, $7 million and $1 million, respectively, primarily consisting of former Parent awards. Stock Appreciation Rights No new SARs have been granted under the Plan. SARs vest under the same terms and conditions as stock option awards; however, they are settled in cash for the difference between the market price on the date of exercise and the exercise price. As a result, SARs are recorded in Adient's consolidated statements of financial position as a liability until the date of exercise. The fair value of each SAR award is estimated using a similar method described for stock options. The fair value of each SAR award is recalculated at the end of each reporting period and the liability and expense are adjusted based on the new fair value. A summary of SAR activity at September 30, 2022, and changes for the year then ended, is presented below: Weighted Shares Weighted Aggregate Outstanding, September 30, 2021 $ 33.29 103,884 Exercised $ 25.84 (56,457) Forfeited or expired $ 27.50 (4,973) Outstanding, September 30, 2022 $ 43.87 42,454 2.0 $ — Exercisable, September 30, 2022 $ 43.87 42,454 2.0 $ — . Former Parent outstanding and exercisable, September 30, 2022 $ 43.94 37,705 2.0 $ — Adient outstanding and exercisable, September 30, 2022 $ 43.25 4,749 1.6 $ — Total outstanding and exercisable, September 30, 2022 $ 43.87 42,454 2.0 $ — In conjunction with the exercise of SARs, Adient made payments of $2 million, $2 million and $1 million during the fiscal years ended September 30, 2022, 2021 and 2020, respectively.

Equity and Noncontrolling Inter

Equity and Noncontrolling Interests	12 Months Ended
	Sep. 30, 2022
Equity [Abstract]
Equity and Noncontrolling Interests	13. Equity and Noncontrolling Interests The following table presents changes in AOCI attributable to Adient: Year Ended September 30, (in millions) 2022 2021 2020 Foreign currency translation adjustments Balance at beginning of period $ (617) $ (634) $ (558) Aggregate adjustment for the period, net of tax (219) 17 (76) Balance at end of period (836) (617) (634) Realized and unrealized gains (losses) on derivatives Balance at beginning of period (8) (28) (8) Current period changes in fair value, net of tax 6 22 (34) Reclassification to income, net of tax (6) (2) 14 Balance at end of period (8) (8) (28) Pension plans Balance at beginning of period (2) (3) (3) Net reclassifications to AOCI 1 1 — Balance at end of period (1) (2) (3) Accumulated other comprehensive income (loss), end of period $ (845) $ (627) $ (665) Adient consolidates certain subsidiaries in which the noncontrolling interest party has within their control the right to require Adient to redeem all or a portion of its interest in the subsidiary. These redeemable noncontrolling interests are reported at their estimated redemption value. Any adjustment to the redemption value impacts retained earnings but does not impact net income. Redeemable noncontrolling interests which are redeemable only upon future events, the occurrence of which is not currently probable, are recorded at carrying value. The following table presents changes in the redeemable noncontrolling interests: Year Ended September 30, (in millions) 2022 2021 2020 Beginning balance $ 240 $ 43 $ 51 Net income 35 25 19 Dividends (66) (14) (23) Business acquisition — 194 — Change in noncontrolling interest share (153) — — Foreign currency translation adjustments (11) (8) (4) Ending balance $ 45 $ 240 $ 43

Retirement Plans

Retirement Plans	12 Months Ended
	Sep. 30, 2022
Retirement Benefits [Abstract]
Retirement Plans	14. Retirement Plans Pension Benefits Adient maintains non-contributory defined benefit pension plans covering primarily non-U.S. employees and a limited number of U.S. employees. The benefits provided are primarily based on years of service and average compensation or a monthly retirement benefit amount. Funding for non-U.S. plans observes the local legal and regulatory limits. Funding for U.S. pension plans equals or exceeds the minimum requirements of the Employee Retirement Income Security Act of 1974. For pension plans with accumulated benefit obligations (ABO) that exceed plan assets, the projected benefit obligation (PBO), ABO and fair value of plan assets of those plans were $129 million, $112 million and $37 million, respectively, as of September 30, 2022, and $204 million, $182 million and $72 million, respectively, as of September 30, 2021. For pension plans with PBO that exceed plan assets, PBO, ABO and fair value of plan assets of those plans were $129 million, $112 million and $37 million, respectively, as of September 30, 2022 and $204 million, $182 million and $72 million, respectively, as of September 30, 2021. In fiscal 2022, Adient paid contributions to the defined benefit pension plans of $16 million. Contributions of at least $14 million in cash to its defined benefit pension plans are expected in fiscal 2023. Projected benefit payments from the plans as of September 30, 2022 are estimated as follows (in millions): 2023 $ 21 2024 19 2025 21 2026 23 2027 25 2028-2032 155 Savings and Investment Plans Adient sponsors various defined contribution savings plans that allow employees to contribute a portion of their pre-tax and/or after-tax income in accordance with plan specified guidelines. Under specified conditions, Adient will contribute to certain savings plans based on the employees' eligible pay and/or will match a percentage of the employee contributions up to certain limits. Matching contributions expense in connection with these plans amounted to $23 million and $44 million for fiscal years 2022 and 2021, respectively. Plan Assets Adient's investment policies employ an approach whereby a mix of equities, fixed income and alternative investments are used to maximize the long-term return of plan assets for a prudent level of risk. The investment portfolio primarily contains a diversified blend of equity and fixed income investments. Equity investments are diversified across domestic and non-domestic stocks, as well as growth, value and small to large capitalizations. Fixed income investments include corporate and government issues, with short-, mid- and long-term maturities, with a focus on investment grade when purchased and a target duration close to that of the plan liability. Investment and market risks are measured and monitored on an ongoing basis through regular investment portfolio reviews, annual liability measurements and periodic asset/liability studies. The majority of the real estate component of the portfolio is invested in a diversified portfolio of high-quality, operating properties with cash yields greater than the targeted appreciation. Investments in other alternative asset classes, including hedge funds and commodities, diversify the expected investment returns relative to the equity and fixed income investments. As a result of Adient's diversification strategies, there are no significant concentrations of risk within the portfolio of investments. Adient's actual asset allocations are in line with target allocations. Adient rebalances asset allocations as appropriate, in order to stay within a range of allocation for each asset category. The expected return on plan assets is based on Adient's expectation of the long-term average rate of return of the capital markets in which the plans invest. The average market returns are adjusted, where appropriate, for active asset management returns. The expected return reflects the investment policy target asset mix and considers the historical returns earned for each asset category. Adient's plan assets by asset category, are as follows: Fair Value Measurements Using: (in millions) Total as of Quoted Prices Significant Significant Net Asset Value (NAV) Pension Cash $ 2 $ 2 $ — $ — $ — Equity Securities Domestic 1 1 — — — International - Developed 18 14 — — 4 International - Emerging 1 — — — 1 Fixed Income Securities Government 125 33 67 — 25 Corporate/Other 76 22 43 — 11 Hedge Fund 38 — 38 — — Real Estate 22 — — 7 15 Total $ 283 $ 72 $ 148 $ 7 $ 56 Fair Value Measurements Using: (in millions) Total as of Quoted Prices Significant Significant Net Asset Value (NAV) Pension Cash $ 5 $ 5 $ — $ — $ — Equity Securities Domestic 12 2 2 — 8 International - Developed 44 27 7 — 10 International - Emerging 2 — 2 — — Fixed Income Securities Government 237 45 168 — 24 Corporate/Other 82 34 38 — 10 Hedge Fund 88 — 88 — — Real Estate 23 — — 7 16 Total $ 493 $ 113 $ 305 $ 7 $ 68 The following is a description of the valuation methodologies used for assets measured at fair value. Cash: The fair value of cash is valued at cost. Equity Securities: The fair value of equity securities is determined by direct quoted market prices. The underlying holdings are direct quoted market prices on regulated financial exchanges. Fixed Income Securities: The fair value of fixed income securities is determined by direct or indirect quoted market prices. If indirect quoted market prices are utilized, the value of assets held in separate accounts is not published, but the investment managers report daily the underlying holdings. The underlying holdings are direct quoted market prices on regulated financial exchanges. Hedge Funds: The fair value of hedge funds is determined by the custodian. The custodian obtains valuations from underlying managers based on market quotes for the most liquid assets and alternative methods for assets that do not have sufficient trading activity to derive prices. Adient and custodian review the methods used by the underlying managers to value the assets. Adient believes this is an appropriate methodology to obtain the fair value of these assets. Real Estate: The fair value of certain investments in real estate is deemed Level 3 since these investments do not have a readily determinable fair value and requires the fund managers independently to arrive at fair value by calculating NAV per share. In order to calculate NAV per share, the fund managers value the real estate investments using any one, or a combination of, the following methods: independent third party appraisals, discounted cash flow analysis of net cash flows projected to be generated by the investment and recent sales of comparable investments. Assumptions used to revalue the properties are updated every quarter. Adient believes this is an appropriate methodology to obtain the fair value of these assets. Investments at NAV : For mutual or collective funds where a NAV is not publicly quoted, the NAV per share is used as a practical expedient and is based on the quoted market prices of the underlying net assets of the fund as reported daily by the fund managers. Funds valued based on NAV per share as a practical expedient are not categorized within the fair value hierarchy. The methods described above may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while Adient believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date. The following sets forth a summary of changes in the fair value of pension assets measured using significant unobservable inputs (Level 3): (in millions) Real Estate Pension Asset value as of September 30, 2020 $ 6 Redemptions — Unrealized gain 1 Asset value as of September 30, 2021 $ 7 Redemptions — Unrealized gain — Asset value as of September 30, 2022 $ 7 Funded Status The table that follows contains the ABO and reconciliations of the changes in the PBO, the changes in plan assets and the funded status: Pension Benefits (in millions) 2022 2021 Accumulated Benefit Obligation $ 322 $ 552 Change in Projected Benefit Obligation: Projected benefit obligation at beginning of year $ 574 $ 606 Service cost 7 8 Interest cost 11 9 Plan participant contributions — — Actuarial (gain) loss (169) (29) Benefits paid (20) (20) Settlements and curtailments — (16) Divestitures — (2) Currency translation adjustment (63) 18 Projected benefit obligation at end of year $ 340 $ 574 Change in Plan Assets: Fair value of plan assets at beginning of year $ 493 $ 486 Actual return on plan assets (149) 4 Employer contributions/(distributions) 16 23 Benefits paid (20) (20) Settlements and curtailments (1) (16) Currency translation adjustment (56) 16 Fair value of plan assets at end of year $ 283 $ 493 Funded status $ (57) $ (81) Amounts recognized in the statement of financial position consist of: Prepaid benefit cost $ 35 $ 51 Accrued benefit liability (92) (132) Net amount recognized $ (57) $ (81) Pension Benefits U.S. Plans Non-U.S. Plans 2022 2021 2022 2021 Weighted Average Assumptions (1) : Discount rate (2) 5.51 % 3.06 % 4.98 % 1.71 % Rate of compensation increase N/A N/A 4.43 % 3.06 % (1) Plan assets and obligations are determined based on a September 30 measurement date. (2) Adient considers the expected benefit payments on a plan-by-plan basis when setting assumed discount rates. As a result, Adient uses different discount rates for each plan depending on the plan jurisdiction, the demographics of participants and the expected timing of benefit payments. For the U.S. pension plan, Adient uses a discount rate provided by an independent third party calculated based on an appropriate mix of high quality bonds. For the non-U.S. pension plans, Adient consistently uses the relevant country specific benchmark indices for determining the various discount rates. Accumulated Other Comprehensive Income The amounts in AOCI on the consolidated statements of financial position, exclusive of tax impacts, that have not yet been recognized as components of net periodic benefit cost at September 30, 2022 and 2021 were $2 million and $3 million, respectively, related to pension benefits. The amounts in AOCI expected to be recognized as components of net periodic benefit cost over the next fiscal year for pension and postretirement benefits are not significant. Net Periodic Benefit Cost The tables that follow contain the components and key assumptions of net periodic benefit cost related to Adient’s pension plans: Pension Benefits (in millions) 2022 2021 2020 Components of Net Periodic Benefit Cost (Credit): Service cost $ 7 $ 8 $ 7 Interest cost 10 9 10 Expected return on plan assets (14) (18) (19) Net actuarial (gain) loss (7) (15) 22 Settlement (gain) loss 1 — 1 Net periodic benefit cost (credit) $ (3) $ (16) $ 21 Pension Benefits U.S. Plans Non-U.S. Plans 2022 2021 2020 2022 2021 2020 Expense Assumptions: Discount rate 3.06 % 2.91 % 3.34 % 2.14 % 1.70 % 1.85 % Expected return on plan assets 5.75 % 5.75 % 5.75 % 3.20 % 3.68 % 4.01 % Rate of compensation increase N/A NA NA 4.05 % 4.15 % 3.66 %

Restructuring and Impairment Co

Restructuring and Impairment Costs	12 Months Ended
	Sep. 30, 2022
Restructuring and Related Activities [Abstract]
Restructuring and Impairment Costs	15. Restructuring and Impairment Costs To better align its resources with its overall strategies and reduce the cost structure of its global operations to address the softness in certain underlying markets, Adient commits to restructuring plans as necessary. During fiscal 2022, Adient committed to a restructuring plan ("2022 Plan") of $25 million that was offset by $10 million of prior year underspend. The restructuring actions relate to cost reduction initiatives and consist primarily of workforce reductions in EMEA and Americas. The restructuring actions are expected to be substantially completed by fiscal 2024. (in millions) Employee Severance and Termination Benefits Currency Total Original reserve $ 25 $ — $ 25 Utilized - cash (6) — (6) Noncash adjustment - other — (1) (1) Balance at September 30, 2022 $ 19 $ (1) $ 18 During fiscal 2021, Adient committed to a restructuring plan ("2021 Plan") of $27 million that was offset by $16 million of prior year underspend. Of the restructuring costs recorded, $23 million related to the EMEA segment, $3 million related to the Americas segment, and $1 million relates to the Asia segment. The restructuring actions relate to cost reduction initiatives and consist primarily of workforce reductions and lease contract terminations. The restructuring actions are expected to be substantially completed in fiscal 2023. (in millions) Employee Severance and Termination Benefits Currency Total Original reserve $ 27 $ — $ 27 Utilized - cash (5) — (5) Balance at September 30, 2021 $ 22 $ — $ 22 Utilized - cash (16) — (16) Noncash adjustment - other (1) (2) (3) Balance at September 30, 2022 $ 5 $ (2) $ 3 During fiscal 2020, Adient committed to a restructuring plan ("2020 Plan") of $205 million. Of the restructuring costs recorded, $20 million relates to the Americas segment, $175 million relates to the EMEA segment and $10 million relates to the Asia segment. The restructuring actions relate to cost reduction initiatives and consist primarily of workforce reductions. Also recorded in fiscal 2020 is $20 million of underspend related to prior year plan reserves. The restructuring actions are expected to be substantially completed by fiscal 2024. The following table summarizes the changes in Adient's 2020 Plan reserve: (in millions) Employee Severance and Termination Benefits Currency Translation Total Balance at September 30, 2020 $ 168 $ 1 $ 169 Utilized - cash (87) — (87) Noncash adjustment - underspend/other (6) 1 (5) Balance at September 30, 2021 $ 75 $ 2 $ 77 Utilized - cash (28) — (28) Noncash adjustment - underspend/other (7) (8) (15) Balance at September 30, 2022 $ 40 $ (6) $ 34 During fiscal 2022, there was $7 million of cash utilized against the 2019, 2018, and 2017 Plan's reserve balances. The majority of the cash utilized during the period was related to the 2019 Plan's reserve balance. The 2019, 2018, and 2017 Plan's reserve balances at September 30, 2022 were $2 million, $1 million, and $2 million, respectively. Adient's restructuring plans have included workforce reductions of approximately 13,000. Restructuring charges associated with employee severance and termination benefits are paid over the severance period granted to each employee or on a lump sum basis in accordance with individual severance agreements. As of September 30, 2022, approximately 12,000 of the employees have been separated from Adient pursuant to the restructuring plans. In addition, the restructuring plans included twenty-five plant closures. As of September 30, 2022, eighteen of the twenty-five plants have been closed. Adient's management closely monitors its overall cost structure and continually analyzes each of its businesses for opportunities to consolidate current operations, improve operating efficiencies and locate facilities in low cost countries in close proximity to customers. This ongoing analysis includes a review of its manufacturing, engineering, purchasing and administrative functions, as well as the overall global footprint for all its businesses. Because of the importance of new vehicle sales by major automotive manufacturers to operations, Adient is affected by the general business conditions in the automotive industry. Future adverse developments in the automotive industry, particularly related to the COVID-19 pandemic and supply chain disruptions, could impact Adient's liquidity position, lead to impairment charges and/or require additional restructuring of its operations.

Income Taxes

Income Taxes	12 Months Ended
	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Income Taxes	16. Income Taxes Consolidated income (loss) before income taxes and noncontrolling interests for the years ended September 30, 2022, 2021, and 2020 is as follows: Year Ended (in millions) 2022 2021 2020 Ireland $ (2) $ (1) $ (3) United States (595) (244) (111) Other Foreign 651 1,684 (315) Income before income taxes and noncontrolling interests $ 54 $ 1,439 $ (429) The components of the provision (benefit) for income taxes are as follows: Year Ended (in millions) 2022 2021 2020 Current Ireland $ (1) $ 1 $ — US - Federal and State 6 1 (1) Other Foreign 84 207 91 89 209 90 Deferred Ireland 1 1 — US - Federal and State (1) (1) — Other Foreign 5 40 (33) 5 40 (33) Income tax provision $ 94 $ 249 $ 57 The significant components of Adient's income tax provision are summarized in the following tables. These amounts do not include the impact of income tax expense related to our nonconsolidated partially-owned affiliates, which is netted against equity income on the consolidated statements of income (loss). The reconciliation between the Irish statutory income tax rate, and Adient’s effective tax rate is as follows: Year Ended (in millions) 2022 2021 2020 Tax expense at Ireland statutory rate $ 7 $ 180 $ (54) State and local income taxes, net of federal benefit (38) (15) (30) Foreign tax rate differential (1) (6) (127) Notional interest deduction (6) (10) (44) Credits and incentives (15) (11) (7) Goodwill impairment — — 9 Repatriation of foreign earnings 24 18 18 Foreign exchange (2) — (1) Impact of tax rate changes (3) (26) (3) Audit settlements and change in uncertain tax positions (2) 24 56 Change in valuation allowance 94 (85) 332 Impairment of subsidiaries — 35 (24) Tax impact of corporate equity and business restructuring transactions 30 133 (77) Other 6 12 9 Income tax provision $ 94 $ 249 $ 57 The income tax expense was higher than the Irish statutory rate of 12.5% for fiscal 2022 primarily due to the inability to recognize a tax benefit for losses in jurisdictions with valuation allowances, the establishment of valuation allowances in certain jurisdictions, and the repatriation of foreign earnings, partially offset by tax benefits related to the release of valuation allowances in certain jurisdictions. No items included in the other category are individually, or when appropriately aggregated, significant. The income tax expense was higher than the Irish statutory rate of 12.5% for fiscal 2021 primarily due to the inability to recognize a tax benefit for losses in jurisdictions with valuation allowances, the establishment of valuation allowances in certain jurisdictions, and the repatriation of foreign earnings, partially offset by tax benefits from audit settlements, the write-off of deferred tax liabilities related to withholding taxes, and withholding taxes on the 2021 Yanfeng Transaction at a rate lower than the Irish statutory rate of 12.5%. No items included in the other category are individually, or when appropriately aggregated, significant. The income tax expense was higher than the Irish statutory rate of 12.5% for fiscal 2020 primarily due to the inability to recognize a tax benefit for losses in jurisdictions with valuation allowances, the repatriation of foreign earnings, and changes in uncertain tax positions, partially offset by the tax benefits related to the impairment and sale of Adient’s YFAI investment, sale of Adient’s automotive fabrics manufacturing business, and impairment charges recorded in the Asia segment. No items included in the other category are individually, or when appropriately aggregated, significant. The foreign tax rate differential benefits for fiscal 2020 through fiscal 2022 are primarily driven by losses earned in jurisdictions where the statutory rate is greater than 12.5% and by the pretax book income of nonconsolidated partially-owned affiliates whose corresponding income tax expense is netted against equity income on the consolidated statements of income. Deferred taxes are classified in the consolidated statements of financial position as follows: September 30, (in millions) 2022 2021 Other noncurrent assets $ 111 $ 134 Other noncurrent liabilities (198) (212) Net deferred tax asset/(liability) $ (87) $ (78) Temporary differences and carryforwards which gave rise to deferred tax assets and liabilities included: September 30, (in millions) 2022 2021 Deferred tax assets: Accrued expenses and reserves $ 87 $ 126 Employee and retiree benefits 38 52 Net operating loss and other credit carryforwards 1,226 1,056 Property, plant and equipment 113 159 Intangible assets 150 181 Operating lease liabilities 61 79 Research and development 27 23 Other 2 12 1,704 1,688 Valuation allowances (1,662) (1,637) 42 51 Deferred tax liabilities: Unremitted earnings of foreign subsidiaries 35 32 Indirect tax credits 25 18 Foreign currency adjustments 8 — Operating lease right-of-use assets 61 79 129 129 Net deferred tax asset/(liability) $ (87) $ (78) At September 30, 2022, Adient had available net operating loss carryforwards of approximately $4.6 billion which are available to reduce future tax liabilities. Net operating loss carryforwards of $2.4 billion will expire at various dates between 2023 and 2042, with the remainder having an indefinite carryforward period. Net operating loss carryforwards of $3.3 billion are offset by a valuation allowance. Adient reviews the realizability of its deferred tax assets on a quarterly basis, or whenever events or changes in circumstances indicate that a review is required. In determining the requirement for a valuation allowance, the historical and projected financial results of the legal entity or combined group recording the net deferred tax asset are considered, along with any other positive or negative evidence. All of the factors that Adient considers in evaluating whether and when to establish or release all or a portion of the deferred tax asset valuation allowance involve significant judgment. Since future financial results may differ from previous estimates, periodic adjustments to Adient's valuation allowances may be necessary. As a result of Adient's fiscal 2022 analysis of the realizability of its worldwide deferred tax assets, and after considering tax planning initiatives and other positive and negative evidence, Adient determined it was more likely than not that certain deferred tax assets in Canada, Japan, and other jurisdictions would not be realized and recorded income tax expense of $12 million, $3 million and $3 million, respectively, to establish valuation allowances. In addition, Adient determined it was more likely than not that certain deferred tax assets acquired as part of the 2021 Yanfeng Transaction would not be realized and recorded a net adjustment to goodwill of $7 million, primarily to establish valuation allowances. Additionally, Adient determined it was more likely than not that deferred tax assets in the Czech Republic and other jurisdictions would be realizable and recorded income tax benefit of $11 million and $2 million, respectively, to release valuation allowances. Adient continues to record valuation allowances on certain deferred tax assets in Germany, Hungary, Luxembourg, Mexico, Poland, Spain, the United Kingdom, the U.S. and other jurisdictions as it remains more likely than not that they will not be realized. As a result of Adient’s fiscal 2021 analysis of the realizability of its worldwide deferred tax assets, and after considering tax planning initiatives and other positive and negative evidence, Adient determined it was more likely than not that certain deferred tax assets in the Czech Republic, Korea, Mexico, and other jurisdictions would not be realized and recorded income tax expense of $5 million, $5 million, $8 million, and $4 million, respectively, to establish valuation allowances. As a result of Adient's fiscal 2020 analysis of the realizability of its worldwide deferred tax assets, and after considering tax planning initiatives and other positive and negative evidence, Adient determined it was more likely than not that deferred tax assets in certain jurisdictions would not be realized. These valuation allowances did not have a material impact on the consolidated financial statements. Adient is subject to income taxes in Ireland, the U.S. and other foreign jurisdictions. With few exceptions, Adient is no longer subject to income tax examination by U.S. federal, state or local tax authorities or by non-U.S. tax authorities for years before 2014. Adient regularly assesses the likelihood of an adverse outcome resulting from examinations to determine the adequacy of its tax reserves. For the year ended September 30, 2022, Adient believes that it is more likely than not that the tax positions it has taken will be sustained upon the resolution of its audits resulting in no material impact on its consolidated financial statements. However, the final determination with respect to tax audits and any related litigation could be materially different from Adient’s estimates. For the years ended September 30, 2022, 2021 and 2020, Adient had gross tax effected unrecognized tax benefits of $499 million, $499 million, and $483 million, respectively. If recognized, $115 million of Adient's unrecognized tax benefits would impact the effective tax rate. Total net accrued interest for the years ended September 30, 2022, 2021 and 2020, was approximately $22 million, $18 million and $15 million, respectively (net of tax benefit). Adient recognizes interest and penalties related to unrecognized tax benefits as a component of income tax expense. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: Year Ended September 30, (in millions) 2022 2021 2020 Beginning balance $ 499 $ 483 $ 414 Additions for tax positions related to the current year 62 29 96 Additions for tax positions of prior years 2 11 17 Reductions for tax positions of prior years (52) (9) (38) Settlements with taxing authorities (3) (12) (4) Statute closings (9) (3) (2) Ending balance $ 499 $ 499 $ 483 During the next twelve months, it is likely that tax audit resolutions or applicable statute of limitation lapses could result in a significant change in the balance of gross unrecognized tax benefits. Given the number of years, jurisdictions and positions subject to examination, Adient is unable to estimate the full range of possible adjustments to the balance of unrecognized tax benefits. Adient has recorded a deferred tax liability of approximately $35 million as of September 30, 2022 on the undistributed earnings of certain consolidated and unconsolidated foreign affiliates for which Adient does not have an indefinite reinvestment assertion. Adient has not provided for deferred taxes on the remainder of undistributed earnings from consolidated foreign affiliates because such earnings should not give rise to additional tax liabilities upon repatriation or are considered to be indefinitely reinvested. It is not practicable to determine the unrecognized deferred tax liability on these earnings because the actual tax liability, if any, is dependent on circumstances existing when remittance occurs. Income taxes paid for the fiscal year ended September 30, 2022 were $77 million. Income taxes paid for the fiscal year ended September 30, 2021 were $78 million excluding $134 million of withholding taxes on the 2021 Yanfeng Transaction. Income taxes paid for the fiscal year ended September 30, 2020 were $98 million. Impacts of Tax Legislation and Change in Statutory Tax Rates On August 16, 2022, President Biden signed the Inflation Reduction Act of 2022 into law. Adient does not expect the provisions of the legislation to have a significant impact on the effective tax rate or the income tax payable and deferred income tax positions of the Company. On March 27, 2020, the House passed the Coronavirus Aid, Relief, and Economic Security Act (The CARES Act), also known as the Third COVID-19 Supplemental Relief bill, and the president signed the legislation into law. Adient does not expect the provisions of the legislation to have a significant impact on the effective tax rate or the income tax payable and deferred income tax positions of the Company. During fiscal years 2022, 2021, and 2020, other tax legislation was adopted in various jurisdictions. These law changes did not have a material impact on the consolidated financial statements. Tax Impact of One-Time Items During fiscal 2022, Adient recognized a one-time gain of $32 million associated with the retrospective recovery of indirect tax credits in Brazil resulting from the Company’s prioritization of those credits, resulting in net tax expense of $4 million. During fiscal 2021, Adient recognized $134 million of withholding tax expense associated with the 2021 Yanfeng Transaction. Adient also recognized tax benefits of $13 million related to the write-off of deferred tax liabilities associated with Chinese joint ventures’ distributions of unremitted earnings that were reinvested in a wholly-owned Chinese subsidiary. In addition, Adient recognized an additional $38 million pre-tax gain related to Brazil indirect tax credits as a result of a favorable supreme court ruling resulting in tax expense of $13 million. In fiscal 2020, Adient committed to a restructuring plan generating a $6 million tax benefit. Adient also sold its investment in YFAI and its automotive fabrics manufacturing business, generating tax benefits of $16 million and $3 million, respectively.

Segment Information

Segment Information	12 Months Ended
	Sep. 30, 2022
Segment Reporting [Abstract]
Segment Information	17. Segment Information Adient manages its business on a geographic basis and operates in the following three reportable segments for financial reporting purposes: 1) Americas, which is inclusive of North America and South America; 2) Europe, Middle East, and Africa ("EMEA") and 3) Asia Pacific/China ("Asia"). Adient evaluates the performance of its reportable segments using an adjusted EBITDA metric defined as income before income taxes and noncontrolling interests, excluding net financing charges, restructuring and impairment costs, restructuring related-costs, net mark-to-market adjustments on pension and postretirement plans, transaction gains/losses, purchase accounting amortization, depreciation, stock-based compensation and other non-recurring items ("Adjusted EBITDA"). Also, certain corporate-related costs are not allocated to the segments. The reportable segments are consistent with how management views the markets served by Adient and reflect the financial information that is reviewed by its chief operating decision maker. Year Ended (in millions) 2022 2021 2020 Net Sales Americas $ 6,557 $ 6,164 $ 5,889 EMEA 4,764 5,564 5,148 Asia 2,926 2,123 1,822 Eliminations (126) (171) (189) Total net sales $ 14,121 $ 13,680 $ 12,670 Year Ended (in millions) 2022 2021 2020 Adjusted EBITDA Americas $ 242 $ 232 $ 228 EMEA 138 277 101 Asia 383 486 424 Corporate-related costs (1) (88) (78) (80) Restructuring and impairment costs (2) (25) (21) (238) Purchase accounting amortization (3) (54) (50) (40) Restructuring related charges (4) (6) (9) (20) Gain (loss) on business divestitures - net (5) — (26) (13) Gain on sale / (impairment) of nonconsolidated partially-owned affiliates (6) (10) 1,214 (231) Depreciation (298) (285) (295) Stock based compensation (29) (36) (15) Other items (7) 6 22 (16) Earnings (loss) before interest and income taxes 259 1,726 (195) Net financing charges (215) (311) (220) Other pension income (expense) 10 24 (14) Income (loss) before income taxes $ 54 $ 1,439 $ (429) Notes: (1) Corporate-related costs not allocated to the segments include executive office, communications, corporate development, legal and corporate finance. (2) Reflects restructuring charges for costs that are directly attributable to restructuring activities and meet the definition of restructuring under ASC 420 and non-recurring impairment charges. During fiscal 2022, an impairment charge of $4 million related to the withdrawal from and sale of its operations in Russia, and a held-for-sale impairment charge of $6 million were recorded in EMEA. Included in restructuring charges in fiscal 2021 is $10 million of held for sale and other non-cash impairment charges in EMEA. Included in restructuring charges in fiscal 2020 is a non-cash pre-tax impairment related to intangible assets (3) Reflects amortization of intangible assets including those related to partially owned affiliates recorded within equity income. (4) Reflects restructuring related charges for costs that are directly attributable to restructuring activities, but do not meet the definition of restructuring under ASC 420 along with restructuring costs at partially owned affiliates recorded within equity income. (5) Fiscal 2021 includes a $21 million loss associated with certain aspects of the 2021 Yanfeng Transaction and a $5 million loss on sale of non-core assets in Asia. Fiscal 2020 includes a $21 million loss of sale of RECARO and $4 million loss on deconsolidation of Aerospace, partially offset by a $12 million gain on completion of the 2020 Yanfeng Transaction. (6) Fiscal 2022 includes $3 million and $7 million of non-cash impairments of certain of Adient's investments in nonconsolidated partially-owned affiliates in Asia and EMEA, respectively. Fiscal 2021 includes a gain associated with the 2021 Yanfeng Transaction of $1,181 million and a gain of $33 million on the sale of Adient's interest in SJA. Fiscal 2020 includes non-cash impairment charges related to Adient's YFAI investment balance recorded in conjunction with the 2020 Yanfeng Transaction. All of these impacts have been recorded within the equity income line in the consolidated statements of income. (7) Fiscal 2022 reflects $8 million of transaction costs, a one-time gain of $32 million associated with the retrospective recovery of indirect tax credits in Brazil, a $14 million charge related to a non-recurring contract related settlement, $1 million of allowance for doubtful accounts resulting from the withdrawal from and sale of operations in Russia, and $2 million of loss on finalization of asset sale in Turkey. Fiscal 2021 reflects a one-time gain of $38 million associated with the retrospective recovery of indirect tax credits in Brazil (of which $36 million relates to recoveries covering the past 20 years and is adjusted out of Americas' segment results), a $5 million gain on previously held interest at YFAS in an affiliate, and $19 million of transaction costs. Fiscal 2020 includes $15 million of transaction costs and $1 million of tax adjustments at YFAI. Additional Segment Information Year Ended September 30, 2022 Reportable Segments Reconciling Items (1) Consolidated (in millions) Americas EMEA Asia Net Sales $ 6,557 $ 4,764 $ 2,926 $ (126) $ 14,121 Equity Income — 12 76 (13) 75 Total Assets 3,073 2,166 2,959 960 9,158 Depreciation 130 116 52 — 298 Amortization 12 4 36 — 52 Capital Expenditures 104 73 50 — 227 (1) Reconciling items include the elimination of intercompany transactions, corporate-related assets and other amounts to reconcile to consolidated totals. Specific reconciling items for equity income represents $10 million of non-cash impairments of Adient's investments in partially-owned affiliates, $1 million of restructuring related charges, $2 million of purchase accounting amortization, $7 million of a non-recurring customer termination charge at an affiliate in Asia, partially offset by a $7 million non-recurring gain on sale of land use rights at an affiliate in China. Corporate-related assets primarily include cash and deferred income tax assets. Year Ended September 30, 2021 Reportable Segments Reconciling Items (1) Consolidated (in millions) Americas EMEA Asia Net Sales $ 6,164 $ 5,564 $ 2,123 $ (171) $ 13,680 Equity Income (1) 7 265 1,213 1,484 Total Assets 2,888 2,473 3,187 2,230 10,778 Depreciation 121 132 32 — 285 Amortization 13 14 18 — 45 Capital Expenditures 131 104 25 — 260 (1) Reconciling items include the elimination of intercompany transactions, corporate-related assets and other amounts to reconcile to consolidated totals. Specific reconciling items for equity income represents a gain associated with the 2021 Yanfeng Transaction of $1,181 million, a gain of $33 million on the sale of Adient's interest in SJA, a $5 million gain on previously held interest at YFAS, offset by $5 million of purchase accounting amortization and $1 million of restructuring related charges. Corporate-related assets primarily include cash, deferred income tax assets, and receivables related to the 2021 Yanfeng Transaction. Year Ended September 30, 2020 Reportable Segments Reconciling Items (1) Consolidated (in millions) Americas EMEA Asia Net Sales $ 5,889 5,148 $ 1,822 (189) $ 12,670 Equity Income 1 8 256 (243) 22 Total Assets 3,019 2,658 2,868 1,716 10,261 Depreciation 128 129 38 — 295 Amortization 13 8 16 — 37 Capital Expenditures 138 164 24 — 326 (1) Reconciling items include the elimination of intercompany transactions, corporate-related assets and other amounts to reconcile to consolidated totals. Specific reconciling items for equity income represents a $231 million non-cash impairment of Adient's YFAI investment, $8 million of restructuring related charges, $3 million of purchase accounting amortization and a $1 million charge for tax adjustments associated with YFAI. Corporate-related assets primarily include cash and deferred income tax assets. Geographic Information Financial information relating to Adient's operations by geographic area is as follows: Net Sales Year Ended September 30, (in millions) 2022 2021 2020 Americas United States $ 5,876 $ 5,500 $ 4,983 Mexico 2,427 2,298 2,004 Other Americas 377 312 318 Regional Elimination (2,123) (1,946) (1,416) 6,557 6,164 5,889 EMEA Germany 862 1,101 1,061 Czech Republic 962 1,155 1,118 Other EMEA 4,232 4,761 4,392 Regional Elimination (1,292) (1,453) (1,423) 4,764 5,564 5,148 Asia China 1,374 642 517 Thailand 508 469 400 Japan 264 331 332 Other Asia 804 705 600 Regional Elimination (24) (24) (27) 2,926 2,123 1,822 Inter-segment elimination (126) (171) (189) Total $ 14,121 $ 13,680 $ 12,670 Adient started consolidating CQADNT in China after completing the acquisition on September 30, 2021. Refer to Note 3, “Acquisitions and Divestitures,” of the notes to the consolidated financial statements for additional information. Long-Lived Assets (consisting of net property, plant and equipment) Year Ended September 30, (in millions) 2022 2021 Americas United States $ 460 $ 467 Mexico 164 173 Other Americas 19 22 643 662 EMEA Germany 126 180 Poland 118 145 Czech Republic 29 41 Other EMEA 223 310 496 676 Asia China 111 125 Thailand 41 38 Japan 47 58 Other Asia 39 48 238 269 Total $ 1,377 $ 1,607

Nonconsolidated Partially-Owned

Nonconsolidated Partially-Owned Affiliates	12 Months Ended
	Sep. 30, 2022
Equity Method Investments and Joint Ventures [Abstract]
Nonconsolidated Partially-Owned Affiliates	18. Nonconsolidated Partially-Owned Affiliates Investments in the net assets of nonconsolidated partially-owned affiliates are reported in the "Investments in partially-owned affiliates" line in the consolidated statements of financial position. Equity in the net income of nonconsolidated partially-owned affiliates are reported in the "Equity income" line in the consolidated statements of income (loss). Adient maintains total investments in partially-owned affiliates of $286 million and $335 million at September 30, 2022 and 2021, respectively. Operating information for nonconsolidated partially-owned affiliates is as follows: % ownership at September 30, Name of key partially-owned affiliate 2022 2021 KEIPER Seating Mechanisms Co., Ltd. (KEIPER, previously AYM) 50.0% 50.0% Changchun FAWAY Adient Automotive Systems Co. Ltd. (CFAA) 49.0% 49.0% Year Ended September 30, (in millions) 2022 2021 2020 Income statement data: Net sales $ 4,039 $ 8,809 $ 9,538 Gross profit $ 374 $ 1,008 $ 1,111 Net income $ 189 $ 733 $ 591 Net income attributable to the entity $ 187 $ 682 $ 563 September 30, (in millions) 2022 2021 Balance sheet data: Current assets $ 1,784 $ 1,792 Noncurrent assets $ 826 $ 874 Current liabilities $ 1,843 $ 1,841 Noncurrent liabilities $ 159 $ 145 Noncontrolling interests $ 6 $ — On March 31, 2021, Adient sold its 50% equity interest in SJA to the joint venture partner for $58 million. The income statement data above includes SJA’s results for the first six months of fiscal 2021. On September 30, 2021, Adient sold all of the issued and outstanding equity interest in YFAS held, directly or indirectly, by Adient, which represented 49.99% of YFAS’s total issued and outstanding equity interest to Yanfeng, the joint venture partner, for ¥8,064 million ($1,257 million) as part of the 2021 Yanfeng Transaction. As a result, the balance sheet data as of September 30, 2021 above excludes those of SJA and YFAS. It also excludes that of CQADNT as Adient started consolidating CQADNT after completing the acquisition of additional interest on September 30, 2021. Refer to Note 3, “Acquisitions and Divestitures,” of the notes to the consolidated financial statements for additional information. During the fourth quarter of fiscal 2022, Adient and KEIPER modified an existing supply agreement, resulting in reductions in Adient’s purchase prices on certain products. Such modifications resulted in reductions of $14 million and $17 million in Adient’s cost of sales and equity income, respectively, during fiscal 2022.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	19. Commitments and Contingencies Adient is involved in various lawsuits, claims and proceedings incident to the operation of its businesses, including those pertaining to product liability, casualty, environmental, safety and health, intellectual property, employment, trade compliance, commercial and contractual matters, and various other matters. Although the outcome of any such lawsuit, claim or proceeding cannot be predicted with certainty and some may be disposed of unfavorably to Adient, it is management's opinion that none of these will have a material adverse effect on Adient's financial position, results of operations or cash flows. Costs related to such matters were not material to the periods presented. Adient accrues for potential environmental liabilities when it is probable a liability has been incurred and the amount of the liability is reasonably estimable. Reserves for environmental liabilities totaled $6 million and $8 million at September 30, 2022 and 2021, respectively. Adient reviews the status of its environmental sites on a quarterly basis and adjusts its reserves accordingly. Such potential liabilities accrued by Adient do not take into consideration possible recoveries of future insurance proceeds. They do, however, take into account the likely share other parties will bear at remediation sites. It is difficult to estimate Adient's ultimate level of liability at many remediation sites due to the large number of other parties that may be involved, the complexity of determining the relative liability among those parties, the uncertainty as to the nature and scope of the investigations and remediation to be conducted, the uncertainty in the application of law and risk assessment, the various choices and costs associated with diverse technologies that may be used in corrective actions at the sites, the often quite lengthy periods over which eventual remediation may occur, and changing environmental laws. Nevertheless, Adient does not currently believe that any claims, penalties or costs in connection with known environmental matters will have a material adverse effect on Adient's financial position, results of operations or cash flows.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Sep. 30, 2022
Related Party Transactions [Abstract]
Related Party Transactions	20. Related Party Transactions In the ordinary course of business, Adient enters into transactions with related parties, such as equity affiliates. Such transactions consist of the sale or purchase of goods and other arrangements. Subsequent to the separation, transactions with the former Parent and its businesses represent third-party transactions. The following table sets forth the location and amounts of net sales to and purchases from related parties included in Adient's consolidated statements of income (loss): Year Ended September 30, (in millions) 2022 2021 2020 Net sales to related parties Net sales $ 247 $ 273 $ 347 Purchases from related parties Cost of sales 434 558 566 The following table sets forth the location and amount of accounts receivable due from and payable to related parties in Adient's consolidated statements of financial position: September 30, (in millions) 2022 2021 Accounts receivable due from related parties Accounts receivable $ 34 $ 30 Accounts payable due to related parties Accounts payable 95 41 Average receivable and payable balances with related parties remained consistent with the period end balances shown above.

Basis of Presentation and Sum_2

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	The consolidated financial statements of Adient have been prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP"). The global automotive industry has continued to experience unprecedented supply chain and other disruptions over the past year related to semiconductor chip shortages, hostilities in Ukraine and localized COVID-19 lockdowns in China. These disruptions have led to unplanned downtime at Adient’s production facilities, often with very little warning, which results in operating inefficiencies and limits Adient’s ability to adequately mitigate such inefficiencies. The automotive industry has also experienced a period of rising input costs and potential shortages related to energy (particularly in EMEA as a result of the conflict in Ukraine), freight and commodities as well as facing an environment of unfavorable foreign currency exchange and rising interest rates. In addition, Adient, along with the automotive industry, has experienced and continues to face wage inflationary pressures as a result of constrained labor availability, particularly in certain jurisdictions in EMEA. COVID-19 and related variants and sub-variants, also continues to be present throughout the world, including in all global and regional markets served by Adient. The elevated COVID-19 rates in China led to lockdowns at various times during fiscal 2022, negatively impacting the automotive production levels in that region, along with creating further supply chain disruptions. As a result of these disruptions, new vehicle sales continue to be significantly lower than historical and previously projected pre-pandemic sales levels. Refer to the consolidated results of operations and segment analysis discussion below for additional information on the impacts of these items on Adient's results. Refer to Note 3, "Acquisitions and Divestitures," of the notes to the consolidated financial statements for additional information on the impacts from the Russia/Ukraine conflict including Adient’s withdrawal from and sale of operations in Russia.
Principles of Consolidations	Principles of Consolidations Adient consolidates its wholly-owned subsidiaries and those entities in which it has a controlling interest. Investments in partially-owned affiliates are accounted for by the equity method when Adient's interest exceeds 20% and does not have a controlling interest.
Consolidated VIEs	Consolidated VIEs Based upon the criteria set forth in the Financial Accounting Standards Board (the FASB) Accounting Standards Codification (ASC) 810, "Consolidation," Adient has determined that it was the primary beneficiary in two variable interest entities (VIEs) for the reporting periods ended September 30, 2022 and 2021, respectively, as Adient absorbs significant economics of the entities and has the power to direct the activities that are considered most significant to the entities.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. The consolidated financial statements reflect management's estimates as of the reporting date. Actual results could differ from those estimates.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The fair values of cash and cash equivalents, accounts receivable, short-term debt and accounts payable approximate their carrying values. See Note 10, "Derivative Instruments and Hedging Activities," and Note 11, "Fair Value Measurements," of the notes to consolidated financial statements for fair value of financial instruments, including derivative instruments and hedging activities. ASC 820, "Fair Value Measurement," defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. ASC 820 also establishes a three-level fair value hierarchy that prioritizes information used in developing assumptions when pricing an asset or liability as follows: Level 1: Observable inputs such as quoted prices in active markets; Level 2: Inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and Level 3: Unobservable inputs where there is little or no market data, which requires the reporting entity to develop its own assumptions. ASC 820 requires the use of observable market data, when available, in making fair value measurements. When inputs used to measure fair value fall within different levels of the hierarchy, the level within which the fair value measurement is categorized is based on the lowest level input that is significant to the fair value measurement.
Cash and Cash Equivalents	Cash and Cash Equivalents Adient considers all highly liquid investments with a maturity of three months or less when purchased to be cash equivalents. Cash is managed by legal entity, with cash pooling agreements in place for all participating entities on a global basis, as applicable.
Receivables	Receivables Receivables consist of amounts billed and currently due from customers and revenues that have been recognized for accounting purposes but not yet billed to customers. Adient extends credit to customers in the normal course of business and maintains an allowance for doubtful accounts resulting from the inability or unwillingness of customers to make required payments. The allowance for doubtful accounts is based on historical experience, existing economic conditions and any specific customer collection issues Adient has identified. Adient enters into supply chain financing programs in certain domestic and foreign jurisdictions to either sell or discount accounts receivable without recourse to third-party institutions. Sales or discounts of accounts receivable are reflected as a reduction of accounts receivable on the consolidated statements of financial position and the proceeds are included in cash flows from operating activities in the consolidated statements of cash flows. As of September 30, 2022 and 2021, $269 million and $132 million have been funded under these programs, respectively.
Inventories	Inventories Inventories are stated at the lower of cost or market. Cost is determined using the first-in, first-out ("FIFO") method. Finished goods and work-in-process inventories include material, labor and manufacturing overhead costs.
Pre-Production Costs Related to Long-Term Supply Arrangements	Pre-Production Costs Related to Long-Term Supply ArrangementsAdient's policy for engineering, research and development, and other design and development costs related to products that will be sold under long-term supply arrangements requires such costs to be expensed as incurred or capitalized if reimbursement from the customer is contractually assured. Income related to recovery of these costs is recorded within selling, general and administrative expense in the consolidated statements of income. The reimbursable costs are recorded in other current assets if reimbursement will occur in less than one year and in other noncurrent assets if reimbursement will occur beyond one year.Costs for molds, dies and other tools used to make products that will be sold under long-term supply arrangements are capitalized within property, plant and equipment if Adient has title to the assets or has the non-cancelable right to use the assets during the term of the supply arrangement. Capitalized items, if specifically designed for a supply arrangement, are amortized over the term of the arrangement; otherwise, amounts are amortized over the estimated useful lives of the assets. The carrying values of assets capitalized in accordance with the foregoing policy are periodically reviewed for impairment whenever events or changes in circumstances indicate that its carrying amount may not be recoverable.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment are recorded at cost. Depreciation is provided over the estimated useful lives of the respective assets using the straight-line method for financial reporting purposes and accelerated methods for income tax purposes. The estimated useful lives range from 3 to 40 years for buildings and improvements and from 3 to 15 years for machinery and equipment.
Leases	Leases On October 1, 2019, Adient adopted Accounting Standards Codification Topic 842, "Leases" ( ASC 842 Operating lease right-of-use (ROU) assets and liabilities are recognized based on the present value of future minimum lease payments over the lease term at commencement dates. ROU assets also include payments made in advance and exclude lease incentives. Lease terms may include options to extend or terminate the lease when it is reasonably certain that such options are to be exercised. Adient uses its incremental borrowing rate, which is the rate of interest it would pay to borrow on a collateralized basis over a similar term to the lease in a similar economic environment, for discounting lease consideration as most lease agreements do not provide an implicit rate. Refer to Note 8, “Leases” of the notes to consolidated financial statements for more information regarding Adient’s leases.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill reflects the cost of an acquisition in excess of the fair values assigned to identifiable net assets acquired. Adient reviews goodwill for impairment during the fourth fiscal quarter or more frequently if events or changes in circumstances indicate the asset might be impaired. Adient performs impairment reviews for its reporting units, which have been determined to be Adient's reportable segments using a fair value method based on management's judgments and assumptions or third party valuations. The fair value of a reporting unit refers to the price that would be received to sell the unit as a whole in an orderly transaction between market participants at the measurement date. In estimating the fair value, Adient primarily uses an income approach utilizing discounted cash flow analyses. Adient also uses a market approach utilizing published multiples of earnings of comparable entities with similar operational and economic characteristics to further support the fair value estimates. The inputs utilized in the analyses are classified as Level 3 inputs within the fair value hierarchy as defined in ASC 820, "Fair Value Measurement." The estimated fair value is then compared with the carrying amount of the reporting unit, including recorded goodwill. An impairment is recorded to the extent the estimated fair value is below the carrying amount of the reporting unit.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets Adient reviews long-lived assets, including property, plant and equipment and other intangible assets with definite lives, for impairment whenever events or changes in circumstances indicate that the asset's carrying amount may not be recoverable. Adient conducts its long-lived asset impairment analyses in accordance with ASC 360-10-15, "Impairment or Disposal of Long-Lived Assets." ASC 360-10-15 requires Adient to group assets and liabilities at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities and evaluate the asset group against the sum of the undiscounted future cash flows. If the undiscounted cash flows do not indicate the carrying amount of the asset is recoverable, an impairment charge is measured as the amount by which the carrying amount of the asset group exceeds its fair value based on discounted cash flow analysis or appraisals.
Impairment of Investments in Partially-Owned Affiliates	Impairment of Investments in Partially-Owned Affiliates Adient monitors its investments in partially-owned affiliates for indicators of other-than-temporary declines in value on an ongoing basis. If Adient determines that an other-than-temporary decline in value has occurred, it recognizes an impairment loss, which is measured as the difference between the recorded book value and the fair value of the investment. Fair value is generally determined using an income approach based on discounted cash flows or negotiated transaction values. Refer to Note 18, "Nonconsolidated Partially-Owned Affiliates," of the notes to consolidated financial statements for more information on Adient’s partially-owned affiliates.
Revenue Recognition	Revenue Recognition Adient provides production and service parts to its customers under awarded multi-year programs. The duration of a program is generally consistent with the life cycle of a vehicle, however, an awarded program does not reach the level of a performance obligation until Adient receives either a purchase order and/or a materials release from the customer for a specific number of parts at a specified price, at which point an enforceable contract exists. Sales revenue is recognized at the point in time when parts are shipped and control has transferred to the customer, at which point an enforceable right to payment exists. Contracts may provide for annual price reductions over the production life of the awarded program, and prices are adjusted on an ongoing basis to reflect changes in product content/cost and other commercial factors. The amount of revenue recognized reflects the consideration that Adient expects to be entitled to in exchange for such products based on purchase orders, annual price reductions and ongoing price adjustments. Refer to Note 2, "Revenue Recognition," of the notes to consolidated financial statements for information on Adient's revenue recognition.
Research and Development Costs	Research and Development CostsExpenditures for research activities relating to product development and improvement (other than those expenditures that are contractually guaranteed for reimbursement from the customer) are charged against income as incurred and included within selling, general and administrative expenses in the consolidated statements of income.
Foreign Currency Translation	Foreign Currency Translation Substantially all of Adient's international operations use the respective local currency as the functional currency. Assets and liabilities of international entities have been translated at period-end exchange rates, and income and expenses have been translated using average exchange rates for the period. Monetary assets and liabilities denominated in non-functional currencies are adjusted to reflect period-end exchange rates. The resulting translation adjustments are accumulated as a component of
Derivative Financial Instruments	Derivative Financial InstrumentsThe fair values of all derivatives are recorded in the consolidated statements of financial position. The change in a derivative's fair value is recorded each period in current earnings or accumulated other comprehensive income, depending on whether the derivative is designated as part of a hedge transaction and if so, the type of hedge transaction.
Stock-Based Compensation	Stock-Based Compensation Stock-based compensation is initially measured at the fair value of the awards on the grant date and is recognized in the financial statements over the period the employees are required to provide services in exchange for the awards. The fair value of restricted stock awards is based on the number of units granted and the stock price on the grant date. The fair value of performance-based share unit, or PSU, awards is based on the stock price at the grant date and the assessed probability of meeting future performance targets. The fair value of cash settled awards are recalculated at the end of each reporting period and the liability and expense are adjusted based on the new fair value. Refer to Note 12, "Stock-Based Compensation," of the notes to consolidated financial statements for Adient's stock based compensation disclosures.
Pension and Postretirement Benefits	Pension and Postretirement Benefits Adient utilizes a mark-to-market approach for recognizing pension and postretirement benefit expenses, including measuring the market related value of plan assets at fair value and recognizing actuarial gains and losses in the fourth quarter of each fiscal year or at the date of a remeasurement event. Refer to Note 14, "Retirement Plans," of the notes to consolidated financial statements for disclosure of Adient's pension and postretirement benefit plans.
Income Taxes	Income Taxes Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and other loss carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. Adient records a valuation allowance that primarily represents operating and other loss carryforwards for which realization is uncertain. Management judgment is required in determining Adient's provision for income taxes, deferred tax assets and liabilities, and the valuation allowance recorded against Adient's net deferred tax assets. Adient reviews the realizability of its deferred tax assets on a quarterly basis, or whenever events or changes in circumstances indicate that a review is required. In determining the requirement for a valuation allowance, the historical and projected financial results of the legal entity or combined group recording the net deferred tax asset are considered, along with any other positive or negative evidence. Since future financial results may differ from previous estimates, periodic adjustments to Adient's valuation allowances may be necessary. Adient is subject to income taxes in Ireland, the U.S. and other non-U.S. jurisdictions. Judgment is required in determining its worldwide provision for income taxes and recording the related assets and liabilities. In the ordinary course of Adient's business, there are many transactions and calculations where the ultimate tax determination is uncertain. Adient's income tax returns for various fiscal years remain under audit by the respective tax authorities. Although the outcome of tax audits is always uncertain, management believes that it has appropriate support for the positions taken on its tax returns and that its annual tax provisions included amounts sufficient to pay assessments, if any, which may be proposed by the taxing authorities. Nonetheless, the amounts ultimately paid, if any, upon resolution of the issues raised by the taxing authorities may differ materially from the amounts accrued for each year. Adient does not generally provide for additional income taxes which would become payable upon repatriation of undistributed earnings of wholly owned foreign subsidiaries. Adient's intent is for such earnings to be reinvested by the subsidiaries or to be repatriated only when it would be tax efficient. Refer to Note 16, "Income Taxes," of the notes to consolidated financial statements for Adient's income tax disclosures.
Earnings Per Share	Potentially dilutive securities whose effect would have been antidilutive are excluded from the computation of diluted earnings per share which for fiscal 2022 and 2020 is a result of being in a loss position.
New Accounting Pronouncements	New Accounting Pronouncements Standards Adopted During Fiscal 2022 On October 1, 2021, Adient adopted Accounting Standards Codification (ASU) 2018-14 Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20). ASU 2018-14 eliminates, adds, and modifies certain disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The guidance is to be applied on a retrospective basis. The adoption of this guidance on October 1, 2021 did not significantly impact Adient's consolidated financial statements for fiscal 2022. On October 1, 2021, Adient adopted ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. ASU 2019-12 modifies ASC 740, Income Taxes, by simplifying accounting for income taxes. As part of its overall simplification initiative to reduce costs and complexity of applying accounting standards while maintaining or improving the usefulness of the information provided to users of financial statements, the FASB’s amendments may impact both interim and annual reporting periods. The adoption of this guidance on October 1, 2021 did not significantly impact Adient's consolidated financial statements for fiscal 2022. Standards Effective After Fiscal 2022 Adient has considered the ASUs summarized below, effective after fiscal 2022, none of which are expected to significantly impact the consolidated financial statements: Standard Pending Adoption Description Date Effective ASU 2020-06, Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40) ASU 2020-06 simplifies the accounting for certain financial instruments with characteristics of liabilities and equity by reducing the number of accounting models for convertible debt and convertible preferred stock. October 1, 2022 ASU 2021-10, Government Assistance (Topic 832) - Disclosures by Business Entities about Government Assistance The ASU requires annual disclosures of: i) information about the nature of government assistance transactions and the related accounting policy used to account for the transactions, ii) the balance sheet and income statement line items affected by the transactions, and the amounts for each financial statement line item, and iii) significant transaction terms and conditions. October 1, 2022 ASU 2022-04, Liabilities - Supplier Finance Programs (Subtopic 405-50): Disclosure of Supplier Finance Program Obligations The ASU requires buyers of goods and services to disclose information about supplier finance programs if such arrangements are used to manage their payables. The disclosures should include both qualitative and quantitative information including key terms and the amount of outstanding obligations. October 1, 2023

Basis of Presentation and Sum_3

Basis of Presentation and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Carrying Amounts and Classifications of Assets and Liabilities for Consolidated VIEs	The carrying amounts and classification of assets (none of which are restricted) and liabilities included in Adient's consolidated statements of financial position for the consolidated VIEs are as follows: September 30, (in millions) 2022 2021 Current assets $ 262 $ 158 Noncurrent assets 113 88 Total assets $ 375 $ 246 Current liabilities $ 233 $ 143 Noncurrent liabilities 14 8 Total liabilities $ 247 $ 151
Schedule of Computation of Basic and Diluted Earnings Per Share	The following table shows the computation of basic and diluted earnings per share: Year Ended (in millions, except per share data) 2022 2021 2020 Numerator: Net income (loss) attributable to Adient $ (120) $ 1,108 $ (547) Denominator: Shares outstanding 94.8 94.2 93.8 Effect of dilutive securities — 1.5 — Diluted shares 94.8 95.7 93.8 Earnings per share: Basic $ (1.27) $ 11.76 $ (5.83) Diluted $ (1.27) $ 11.58 $ (5.83)
Schedule of Accounting Standards Update and Change in Accounting Principle	Adient has considered the ASUs summarized below, effective after fiscal 2022, none of which are expected to significantly impact the consolidated financial statements: Standard Pending Adoption Description Date Effective ASU 2020-06, Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40) ASU 2020-06 simplifies the accounting for certain financial instruments with characteristics of liabilities and equity by reducing the number of accounting models for convertible debt and convertible preferred stock. October 1, 2022 ASU 2021-10, Government Assistance (Topic 832) - Disclosures by Business Entities about Government Assistance The ASU requires annual disclosures of: i) information about the nature of government assistance transactions and the related accounting policy used to account for the transactions, ii) the balance sheet and income statement line items affected by the transactions, and the amounts for each financial statement line item, and iii) significant transaction terms and conditions. October 1, 2022 ASU 2022-04, Liabilities - Supplier Finance Programs (Subtopic 405-50): Disclosure of Supplier Finance Program Obligations The ASU requires buyers of goods and services to disclose information about supplier finance programs if such arrangements are used to manage their payables. The disclosures should include both qualitative and quantitative information including key terms and the amount of outstanding obligations. October 1, 2023

Acquisitions and Divestitures (

Acquisitions and Divestitures (Tables)	12 Months Ended
	Sep. 30, 2022
Business Combination and Asset Acquisition [Abstract]
Schedule of Purchase Price Adjustments and Allocation	Adient recorded a purchase price allocation for the assets acquired and liabilities assumed based on their estimated fair values as of the September 30, 2021 acquisition date. The purchase price adjustments and allocation is as follows: Fair value allocation (in millions) CQADNT LFADNT Cash $ 55 $ 5 Accounts receivable 296 2 Inventory 37 5 Property, plant and equipment 86 8 Other assets 39 2 Goodwill 181 8 Intangible assets 234 6 Accounts payable (252) (19) Other liabilities (121) (4) Subtotal 555 13 Less: Interest already owned 103 — Less: Redeemable noncontrolling interest 194 — Total purchase consideration 258 13 Less: cash acquired 55 5 Net cash paid $ 203 $ 8

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Sep. 30, 2022
Inventory Disclosure [Abstract]
Schedule of Inventories	Inventories consisted of the following: September 30, (in millions) 2022 2021 Raw materials and supplies $ 755 $ 750 Work-in-process 26 29 Finished goods 172 197 Inventories $ 953 $ 976

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Sep. 30, 2022
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment	Property, plant and equipment consisted of the following: September 30, (in millions) 2022 2021 Buildings and improvements $ 1,053 $ 1,167 Machinery and equipment 2,889 3,087 Construction in progress 146 162 Land 82 100 Total property, plant and equipment 4,170 4,516 Less: accumulated depreciation (2,793) (2,909) Property, plant and equipment - net $ 1,377 $ 1,607

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Changes in Carrying Amount of Goodwill	The changes in the carrying amount of goodwill are as follows: (in millions) Americas EMEA Asia Total Balance at September 30, 2020 $ 606 $ 368 $ 1,083 $ 2,057 Business acquisitions — — 188 188 Business divestitures — (11) — (11) Currency translation and other 1 (3) (20) (22) Balance at September 30, 2021 $ 607 $ 354 $ 1,251 $ 2,212 Currency translation and other — (59) (96) (155) Balance at September 30, 2022 $ 607 $ 295 $ 1,155 $ 2,057
Schedule of Other Intangible Assets	Adient's other intangible assets, primarily from business acquisitions valued based on independent appraisals, consisted of: September 30, 2022 September 30, 2021 (in millions) Gross Accumulated Net Gross Accumulated Net Intangible assets Patented technology $ 80 $ (25) $ 55 $ 86 $ (19) $ 67 Customer relationships 560 (163) 397 649 (178) 471 Trademarks 19 (17) 2 26 (21) 5 Miscellaneous 25 (12) 13 24 (12) 12 Total intangible assets $ 684 $ (217) $ 467 $ 785 $ (230) $ 555

Product Warranties (Tables)

Product Warranties (Tables)	12 Months Ended
	Sep. 30, 2022
Product Warranties Disclosures [Abstract]
Schedule of Product Warranty Liability	The changes in Adient's total product warranty liability are as follows: September 30, (in millions) 2022 2021 Balance at beginning of period $ 23 $ 24 Accruals for warranties issued during the period 8 9 Changes in accruals related to pre-existing warranties (including changes in estimates) — (2) Changes in accruals related to business acquisitions — 1 Changes in accruals related to business divestitures — (1) Settlements made (in cash or in kind) during the period (9) (8) Currency translation (1) — Balance at end of period $ 21 $ 23

Leases (Tables)

Leases (Tables)	12 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Schedule of Lease Costs	The components of lease costs for the years ended September 30, 2022 and 2021 were as follows: Year Ended September 30, (in millions) 2022 2021 2020 Operating lease cost $ 117 $ 125 $ 125 Short-term lease cost 20 20 24 Total lease cost $ 137 $ 145 $ 149 Supplemental cash flow information related to leases was as follows: Year Ended September 30, (in millions) 2022 2021 2020 Right-of-use assets obtained in exchange for lease obligations: Operating leases (non-cash activity) $ 52 $ 109 $ 79 Operating cash flows: Cash paid for amounts included in the measurement of lease liabilities $ 116 $ 126 $ 125 Adient’s finance leases were not significant to the consolidated financial statements during fiscal 2022 and 2021. Refer to Note 9, "Debt and Financing Arrangements," of the notes to consolidated financial statements for additional information.
Schedule of Operating Lease Right of Use Assets and Operating Lease Liabilities	Operating lease right-of-use assets and lease liabilities included in the consolidated statement of financial position were as follows: September 30, (in millions) 2022 2021 Operating leases: Operating lease right-of-use assets Other noncurrent assets $ 266 $ 335 Operating lease liabilities - current Other current liabilities $ 81 $ 89 Operating lease liabilities - noncurrent Other noncurrent liabilities 186 246 $ 267 $ 335 Weighted average remaining lease term: Operating leases 6 years 6 years Weighted average discount rate: Operating leases 5.6 % 5.2 %
Schedule of Lessee, Operating Lease, Liability, Maturity	Maturities of operating lease liabilities and minimum payments for operating leases having initial or remaining non-cancelable terms in excess of one year as of September 30, 2022 were as follows: Fiscal years (in millions) Operating Leases 2023 $ 90 2024 67 2025 46 2026 29 2027 23 Thereafter 55 Total lease payments 310 Less: imputed interest (43) Present value of lease liabilities $ 267

Debt and Financing Arrangemen_2

Debt and Financing Arrangements (Tables)	12 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Schedule of Long Term Debt	Long-term and short-term debt consisted of the following: September 30, (in millions) 2022 2021 Long-term debt: Term Loan B - LIBOR plus 3.25% due in 2028 $ 988 $ 998 4.875% Notes due in 2026 795 795 3.50% Notes due in 2024 809 1,161 9.00% Notes due in 2025 — 600 European Investment Bank Loan - EURIBOR plus 1.58% due in 2022 — 156 Finance lease obligation 1 1 Less: debt issuance costs (18) (32) Gross long-term debt 2,575 3,679 Less: current portion 11 167 Net long-term debt $ 2,564 $ 3,512 Short-term debt: Other bank borrowings (1) 3 17 Total short-term debt $ 3 $ 17 (1) The weighted average interest rates on short-term debts, based on levels of debt maintained in various jurisdictions, were 6.0% and 3.8% at September 30, 2022 and 2021, respectively.
Schedule of Maturities of Long-Term Debt	Principal payments required on long-term debt during the next five years are as follows: Year Ended (in millions) 2023 2024 2025 2026 2027 Principal payments $ 11 $ 819 $ 10 $ 805 $ 10
Schedule of Net Financing Charges	Adient's net financing charges in the consolidated statements of income (loss) contained the following components: Year Ended September 30, (in millions) 2022 2021 2020 Interest expense, net of capitalized interest costs $ 161 $ 207 $ 216 Banking fees and debt issuance cost amortization 22 32 18 Interest income (9) (7) (11) Premium paid on repurchase of debt 38 49 — Derivative loss on Yanfeng transaction 3 30 — (Gain) on extinguishment of debt — — (3) Net financing charges $ 215 $ 311 $ 220

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Sep. 30, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Fair Values of Derivative Instruments and Other Amounts	The following table presents the location and fair values of derivative instruments and other amounts used in hedging activities included in Adient's consolidated statements of financial position: Derivatives and Hedging Derivatives and Hedging September 30, (in millions) 2022 2021 2022 2021 Other current assets Foreign currency exchange derivatives $ 17 $ 8 $ 3 $ — Other noncurrent assets Foreign currency exchange derivatives — — — 1 Total assets $ 17 $ 8 $ 3 $ 1 Other current liabilities Foreign currency exchange derivatives $ 20 $ 11 $ — $ 13 Other noncurrent liabilities Foreign currency exchange derivatives 2 4 1 — Long-term debt Foreign currency denominated debt 809 1,161 — — Total liabilities $ 831 $ 1,176 $ 1 $ 13
Schedule of Gross and Net Amounts of Derivative Instruments and Other Amounts	The gross and net amounts of derivative instruments and other amounts used in hedging activities are as follows: Assets Liabilities September 30, (in millions) 2022 2021 2022 2021 Gross amount recognized $ 20 $ 9 $ 832 $ 1,189 Gross amount eligible for offsetting (19) (9) (19) (9) Net amount $ 1 $ — $ 813 $ 1,180
Schedule of Effective Portion of Pretax Gains (Losses)	The following table presents the effective portion of pretax gains (losses) recorded in other comprehensive income related to cash flow hedges: Year Ended (in millions) 2022 2021 2020 Foreign currency exchange derivatives $ 8 $ 29 $ (37) The following table presents the location and amount of the effective portion of pretax gains (losses) on cash flow hedges reclassified from AOCI into Adient's consolidated statements of income: (in millions) Year Ended 2022 2021 2020 Foreign currency exchange derivatives Cost of sales $ 6 $ 2 $ (16) The following table presents the location and amount of pretax gains (losses) on derivatives not designated as hedging instruments recognized in Adient's consolidated statements of income (loss): (in millions) Year Ended 2022 2021 2020 Foreign currency exchange derivatives Cost of sales $ — $ (4) $ (4) Foreign currency exchange derivatives Net financing charges (33) (30) 1 Total $ (33) $ (34) $ (3)

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Sep. 30, 2022
Fair Value Disclosures [Abstract]
Schedule of Fair Value Hierarchy for Assets and Liabilities	The following tables present Adient's fair value hierarchy for those assets and liabilities measured at fair value. Refer to Note 14, "Retirement Plans," of the notes to consolidated financial statements for fair value tables of pension assets. Fair Value Measurements Using: (in millions) Total as of Quoted Prices Significant Significant Other current assets Foreign currency exchange derivatives $ 20 $ — $ 20 $ — Total assets $ 20 $ — $ 20 $ — Other current liabilities Foreign currency exchange derivatives $ 20 $ — $ 20 $ — Other noncurrent liabilities Foreign currency exchange derivatives 3 — 3 — Total liabilities $ 23 $ — $ 23 $ — Fair Value Measurements Using: (in millions) Total as of Quoted Prices Significant Significant Other current assets Foreign currency exchange derivatives $ 8 $ — $ 8 $ — Other noncurrent assets Foreign currency exchange derivatives 1 — 1 — Total assets $ 9 $ — $ 9 $ — Other current liabilities Foreign currency exchange derivatives $ 24 $ — $ 24 $ — Other noncurrent liabilities Foreign currency exchange derivatives 4 — 4 — Total liabilities $ 28 $ — $ 28 $ —

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Schedule of Nonvested Restricted Stock Awards	A summary of the status of nonvested restricted stock awards at September 30, 2022, and changes for the fiscal year then ended, is presented below: Weighted Restricted Shares/Units Nonvested, September 30, 2021 $ 26.01 1,148,888 Granted $ 46.18 354,148 Vested $ 27.57 (547,123) Forfeited $ 28.91 (83,496) Nonvested, September 30, 2022 $ 32.94 872,417
Schedule of Nonvested PSUs	A summary of the status of Adient's nonvested PSUs at September 30, 2022, and changes for the fiscal year then ended is presented below: Weighted Performance Shares/Units Nonvested, September 30, 2021 $ 24.40 1,223,180 Granted $ 46.79 263,573 Vested $ 29.18 (252,149) Forfeited $ 19.78 (165,890) Nonvested, September 30, 2022 $ 29.51 1,068,714
Schedule of Stock Option Activity	A summary of stock option activity at September 30, 2022, and changes for the year then ended, is presented below: Weighted Shares Weighted Aggregate Outstanding, September 30, 2021 $ 32.77 93,790 Exercised $ 26.36 (40,571) Forfeited or expired $ 27.53 (3,280) Outstanding, September 30, 2022 $ 38.32 49,939 1.2 $ — Exercisable, September 30, 2022 $ 38.32 49,939 1.2 $ — Former Parent outstanding and exercisable, September 30, 2022 $ 25.67 20,971 0 $ — Adient outstanding and exercisable, September 30, 2022 $ 47.48 28,968 2.1 $ — Total outstanding and exercisable, September 30, 2022 $ 38.32 49,939 1.2 $ —
Schedule of SAR Activity	A summary of SAR activity at September 30, 2022, and changes for the year then ended, is presented below: Weighted Shares Weighted Aggregate Outstanding, September 30, 2021 $ 33.29 103,884 Exercised $ 25.84 (56,457) Forfeited or expired $ 27.50 (4,973) Outstanding, September 30, 2022 $ 43.87 42,454 2.0 $ — Exercisable, September 30, 2022 $ 43.87 42,454 2.0 $ — . Former Parent outstanding and exercisable, September 30, 2022 $ 43.94 37,705 2.0 $ — Adient outstanding and exercisable, September 30, 2022 $ 43.25 4,749 1.6 $ — Total outstanding and exercisable, September 30, 2022 $ 43.87 42,454 2.0 $ —

Equity and Noncontrolling Int_2

Equity and Noncontrolling Interests (Tables)	12 Months Ended
	Sep. 30, 2022
Equity [Abstract]
Schedule of AOCI	The following table presents changes in AOCI attributable to Adient: Year Ended September 30, (in millions) 2022 2021 2020 Foreign currency translation adjustments Balance at beginning of period $ (617) $ (634) $ (558) Aggregate adjustment for the period, net of tax (219) 17 (76) Balance at end of period (836) (617) (634) Realized and unrealized gains (losses) on derivatives Balance at beginning of period (8) (28) (8) Current period changes in fair value, net of tax 6 22 (34) Reclassification to income, net of tax (6) (2) 14 Balance at end of period (8) (8) (28) Pension plans Balance at beginning of period (2) (3) (3) Net reclassifications to AOCI 1 1 — Balance at end of period (1) (2) (3) Accumulated other comprehensive income (loss), end of period $ (845) $ (627) $ (665)
Schedule of changes in redeemable noncontrolling interest	The following table presents changes in the redeemable noncontrolling interests: Year Ended September 30, (in millions) 2022 2021 2020 Beginning balance $ 240 $ 43 $ 51 Net income 35 25 19 Dividends (66) (14) (23) Business acquisition — 194 — Change in noncontrolling interest share (153) — — Foreign currency translation adjustments (11) (8) (4) Ending balance $ 45 $ 240 $ 43

Retirement Plans (Tables)

Retirement Plans (Tables)	12 Months Ended
	Sep. 30, 2022
Retirement Benefits [Abstract]
Schedule of Projected Benefit Payments	Projected benefit payments from the plans as of September 30, 2022 are estimated as follows (in millions): 2023 $ 21 2024 19 2025 21 2026 23 2027 25 2028-2032 155
Schedule of Plan Assets by Asset Category	Adient's plan assets by asset category, are as follows: Fair Value Measurements Using: (in millions) Total as of Quoted Prices Significant Significant Net Asset Value (NAV) Pension Cash $ 2 $ 2 $ — $ — $ — Equity Securities Domestic 1 1 — — — International - Developed 18 14 — — 4 International - Emerging 1 — — — 1 Fixed Income Securities Government 125 33 67 — 25 Corporate/Other 76 22 43 — 11 Hedge Fund 38 — 38 — — Real Estate 22 — — 7 15 Total $ 283 $ 72 $ 148 $ 7 $ 56 Fair Value Measurements Using: (in millions) Total as of Quoted Prices Significant Significant Net Asset Value (NAV) Pension Cash $ 5 $ 5 $ — $ — $ — Equity Securities Domestic 12 2 2 — 8 International - Developed 44 27 7 — 10 International - Emerging 2 — 2 — — Fixed Income Securities Government 237 45 168 — 24 Corporate/Other 82 34 38 — 10 Hedge Fund 88 — 88 — — Real Estate 23 — — 7 16 Total $ 493 $ 113 $ 305 $ 7 $ 68
Schedule of Changes in Fair Value of Pension Assets	The following sets forth a summary of changes in the fair value of pension assets measured using significant unobservable inputs (Level 3): (in millions) Real Estate Pension Asset value as of September 30, 2020 $ 6 Redemptions — Unrealized gain 1 Asset value as of September 30, 2021 $ 7 Redemptions — Unrealized gain — Asset value as of September 30, 2022 $ 7
Schedule of Changes in Projected Benefit Obligations, Changes in Plan Assets and Funded Status	The table that follows contains the ABO and reconciliations of the changes in the PBO, the changes in plan assets and the funded status: Pension Benefits (in millions) 2022 2021 Accumulated Benefit Obligation $ 322 $ 552 Change in Projected Benefit Obligation: Projected benefit obligation at beginning of year $ 574 $ 606 Service cost 7 8 Interest cost 11 9 Plan participant contributions — — Actuarial (gain) loss (169) (29) Benefits paid (20) (20) Settlements and curtailments — (16) Divestitures — (2) Currency translation adjustment (63) 18 Projected benefit obligation at end of year $ 340 $ 574 Change in Plan Assets: Fair value of plan assets at beginning of year $ 493 $ 486 Actual return on plan assets (149) 4 Employer contributions/(distributions) 16 23 Benefits paid (20) (20) Settlements and curtailments (1) (16) Currency translation adjustment (56) 16 Fair value of plan assets at end of year $ 283 $ 493 Funded status $ (57) $ (81) Amounts recognized in the statement of financial position consist of: Prepaid benefit cost $ 35 $ 51 Accrued benefit liability (92) (132) Net amount recognized $ (57) $ (81)
Schedule of Weighted Average Assumptions	Pension Benefits U.S. Plans Non-U.S. Plans 2022 2021 2022 2021 Weighted Average Assumptions (1) : Discount rate (2) 5.51 % 3.06 % 4.98 % 1.71 % Rate of compensation increase N/A N/A 4.43 % 3.06 % (1) Plan assets and obligations are determined based on a September 30 measurement date. (2) Adient considers the expected benefit payments on a plan-by-plan basis when setting assumed discount rates. As a result, Adient uses different discount rates for each plan depending on the plan jurisdiction, the demographics of participants and the expected timing of benefit payments. For the U.S. pension plan, Adient uses a discount rate provided by an independent third party calculated based on an appropriate mix of high quality bonds. For the non-U.S. pension plans, Adient consistently uses the relevant country specific benchmark indices for determining the various discount rates.
Schedule of Components and Key Assumptions of Net Periodic Benefit Cost	The tables that follow contain the components and key assumptions of net periodic benefit cost related to Adient’s pension plans: Pension Benefits (in millions) 2022 2021 2020 Components of Net Periodic Benefit Cost (Credit): Service cost $ 7 $ 8 $ 7 Interest cost 10 9 10 Expected return on plan assets (14) (18) (19) Net actuarial (gain) loss (7) (15) 22 Settlement (gain) loss 1 — 1 Net periodic benefit cost (credit) $ (3) $ (16) $ 21 Pension Benefits U.S. Plans Non-U.S. Plans 2022 2021 2020 2022 2021 2020 Expense Assumptions: Discount rate 3.06 % 2.91 % 3.34 % 2.14 % 1.70 % 1.85 % Expected return on plan assets 5.75 % 5.75 % 5.75 % 3.20 % 3.68 % 4.01 % Rate of compensation increase N/A NA NA 4.05 % 4.15 % 3.66 %

Restructuring and Impairment _2

Restructuring and Impairment Costs (Tables)	12 Months Ended
	Sep. 30, 2022
Restructuring and Related Activities [Abstract]
Schedule of Restructuring Reserve	The restructuring actions are expected to be substantially completed by fiscal 2024. (in millions) Employee Severance and Termination Benefits Currency Total Original reserve $ 25 $ — $ 25 Utilized - cash (6) — (6) Noncash adjustment - other — (1) (1) Balance at September 30, 2022 $ 19 $ (1) $ 18 (in millions) Employee Severance and Termination Benefits Currency Total Original reserve $ 27 $ — $ 27 Utilized - cash (5) — (5) Balance at September 30, 2021 $ 22 $ — $ 22 Utilized - cash (16) — (16) Noncash adjustment - other (1) (2) (3) Balance at September 30, 2022 $ 5 $ (2) $ 3 The following table summarizes the changes in Adient's 2020 Plan reserve: (in millions) Employee Severance and Termination Benefits Currency Translation Total Balance at September 30, 2020 $ 168 $ 1 $ 169 Utilized - cash (87) — (87) Noncash adjustment - underspend/other (6) 1 (5) Balance at September 30, 2021 $ 75 $ 2 $ 77 Utilized - cash (28) — (28) Noncash adjustment - underspend/other (7) (8) (15) Balance at September 30, 2022 $ 40 $ (6) $ 34

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Schedule of Income Before Income Tax, Domestic and Foreign	Consolidated income (loss) before income taxes and noncontrolling interests for the years ended September 30, 2022, 2021, and 2020 is as follows: Year Ended (in millions) 2022 2021 2020 Ireland $ (2) $ (1) $ (3) United States (595) (244) (111) Other Foreign 651 1,684 (315) Income before income taxes and noncontrolling interests $ 54 $ 1,439 $ (429)
Schedule of Components of the Provision (Benefit) for Income Taxes	The components of the provision (benefit) for income taxes are as follows: Year Ended (in millions) 2022 2021 2020 Current Ireland $ (1) $ 1 $ — US - Federal and State 6 1 (1) Other Foreign 84 207 91 89 209 90 Deferred Ireland 1 1 — US - Federal and State (1) (1) — Other Foreign 5 40 (33) 5 40 (33) Income tax provision $ 94 $ 249 $ 57
Schedule of Effective Tax Rate Reconciliation	The reconciliation between the Irish statutory income tax rate, and Adient’s effective tax rate is as follows: Year Ended (in millions) 2022 2021 2020 Tax expense at Ireland statutory rate $ 7 $ 180 $ (54) State and local income taxes, net of federal benefit (38) (15) (30) Foreign tax rate differential (1) (6) (127) Notional interest deduction (6) (10) (44) Credits and incentives (15) (11) (7) Goodwill impairment — — 9 Repatriation of foreign earnings 24 18 18 Foreign exchange (2) — (1) Impact of tax rate changes (3) (26) (3) Audit settlements and change in uncertain tax positions (2) 24 56 Change in valuation allowance 94 (85) 332 Impairment of subsidiaries — 35 (24) Tax impact of corporate equity and business restructuring transactions 30 133 (77) Other 6 12 9 Income tax provision $ 94 $ 249 $ 57
Schedule of Deferred Taxes	Deferred taxes are classified in the consolidated statements of financial position as follows: September 30, (in millions) 2022 2021 Other noncurrent assets $ 111 $ 134 Other noncurrent liabilities (198) (212) Net deferred tax asset/(liability) $ (87) $ (78)
Schedule of Temporary Differences and Carryforwards	Temporary differences and carryforwards which gave rise to deferred tax assets and liabilities included: September 30, (in millions) 2022 2021 Deferred tax assets: Accrued expenses and reserves $ 87 $ 126 Employee and retiree benefits 38 52 Net operating loss and other credit carryforwards 1,226 1,056 Property, plant and equipment 113 159 Intangible assets 150 181 Operating lease liabilities 61 79 Research and development 27 23 Other 2 12 1,704 1,688 Valuation allowances (1,662) (1,637) 42 51 Deferred tax liabilities: Unremitted earnings of foreign subsidiaries 35 32 Indirect tax credits 25 18 Foreign currency adjustments 8 — Operating lease right-of-use assets 61 79 129 129 Net deferred tax asset/(liability) $ (87) $ (78)
Schedule of Unrecognized Tax Benefits	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: Year Ended September 30, (in millions) 2022 2021 2020 Beginning balance $ 499 $ 483 $ 414 Additions for tax positions related to the current year 62 29 96 Additions for tax positions of prior years 2 11 17 Reductions for tax positions of prior years (52) (9) (38) Settlements with taxing authorities (3) (12) (4) Statute closings (9) (3) (2) Ending balance $ 499 $ 499 $ 483

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Sep. 30, 2022
Segment Reporting [Abstract]
Schedule of Financial Information for Reportable Segments	Year Ended (in millions) 2022 2021 2020 Net Sales Americas $ 6,557 $ 6,164 $ 5,889 EMEA 4,764 5,564 5,148 Asia 2,926 2,123 1,822 Eliminations (126) (171) (189) Total net sales $ 14,121 $ 13,680 $ 12,670 Year Ended (in millions) 2022 2021 2020 Adjusted EBITDA Americas $ 242 $ 232 $ 228 EMEA 138 277 101 Asia 383 486 424 Corporate-related costs (1) (88) (78) (80) Restructuring and impairment costs (2) (25) (21) (238) Purchase accounting amortization (3) (54) (50) (40) Restructuring related charges (4) (6) (9) (20) Gain (loss) on business divestitures - net (5) — (26) (13) Gain on sale / (impairment) of nonconsolidated partially-owned affiliates (6) (10) 1,214 (231) Depreciation (298) (285) (295) Stock based compensation (29) (36) (15) Other items (7) 6 22 (16) Earnings (loss) before interest and income taxes 259 1,726 (195) Net financing charges (215) (311) (220) Other pension income (expense) 10 24 (14) Income (loss) before income taxes $ 54 $ 1,439 $ (429) Notes: (1) Corporate-related costs not allocated to the segments include executive office, communications, corporate development, legal and corporate finance. (2) Reflects restructuring charges for costs that are directly attributable to restructuring activities and meet the definition of restructuring under ASC 420 and non-recurring impairment charges. During fiscal 2022, an impairment charge of $4 million related to the withdrawal from and sale of its operations in Russia, and a held-for-sale impairment charge of $6 million were recorded in EMEA. Included in restructuring charges in fiscal 2021 is $10 million of held for sale and other non-cash impairment charges in EMEA. Included in restructuring charges in fiscal 2020 is a non-cash pre-tax impairment related to intangible assets (3) Reflects amortization of intangible assets including those related to partially owned affiliates recorded within equity income. (4) Reflects restructuring related charges for costs that are directly attributable to restructuring activities, but do not meet the definition of restructuring under ASC 420 along with restructuring costs at partially owned affiliates recorded within equity income. (5) Fiscal 2021 includes a $21 million loss associated with certain aspects of the 2021 Yanfeng Transaction and a $5 million loss on sale of non-core assets in Asia. Fiscal 2020 includes a $21 million loss of sale of RECARO and $4 million loss on deconsolidation of Aerospace, partially offset by a $12 million gain on completion of the 2020 Yanfeng Transaction. (6) Fiscal 2022 includes $3 million and $7 million of non-cash impairments of certain of Adient's investments in nonconsolidated partially-owned affiliates in Asia and EMEA, respectively. Fiscal 2021 includes a gain associated with the 2021 Yanfeng Transaction of $1,181 million and a gain of $33 million on the sale of Adient's interest in SJA. Fiscal 2020 includes non-cash impairment charges related to Adient's YFAI investment balance recorded in conjunction with the 2020 Yanfeng Transaction. All of these impacts have been recorded within the equity income line in the consolidated statements of income. (7) Fiscal 2022 reflects $8 million of transaction costs, a one-time gain of $32 million associated with the retrospective recovery of indirect tax credits in Brazil, a $14 million charge related to a non-recurring contract related settlement, $1 million of allowance for doubtful accounts resulting from the withdrawal from and sale of operations in Russia, and $2 million of loss on finalization of asset sale in Turkey. Fiscal 2021 reflects a one-time gain of $38 million associated with the retrospective recovery of indirect tax credits in Brazil (of which $36 million relates to recoveries covering the past 20 years and is adjusted out of Americas' segment results), a $5 million gain on previously held interest at YFAS in an affiliate, and $19 million of transaction costs. Fiscal 2020 includes $15 million of transaction costs and $1 million of tax adjustments at YFAI.
Schedule of Reconciliation of Other Significant Reconciling Items from Segments to Consolidated	Additional Segment Information Year Ended September 30, 2022 Reportable Segments Reconciling Items (1) Consolidated (in millions) Americas EMEA Asia Net Sales $ 6,557 $ 4,764 $ 2,926 $ (126) $ 14,121 Equity Income — 12 76 (13) 75 Total Assets 3,073 2,166 2,959 960 9,158 Depreciation 130 116 52 — 298 Amortization 12 4 36 — 52 Capital Expenditures 104 73 50 — 227 (1) Reconciling items include the elimination of intercompany transactions, corporate-related assets and other amounts to reconcile to consolidated totals. Specific reconciling items for equity income represents $10 million of non-cash impairments of Adient's investments in partially-owned affiliates, $1 million of restructuring related charges, $2 million of purchase accounting amortization, $7 million of a non-recurring customer termination charge at an affiliate in Asia, partially offset by a $7 million non-recurring gain on sale of land use rights at an affiliate in China. Corporate-related assets primarily include cash and deferred income tax assets. Year Ended September 30, 2021 Reportable Segments Reconciling Items (1) Consolidated (in millions) Americas EMEA Asia Net Sales $ 6,164 $ 5,564 $ 2,123 $ (171) $ 13,680 Equity Income (1) 7 265 1,213 1,484 Total Assets 2,888 2,473 3,187 2,230 10,778 Depreciation 121 132 32 — 285 Amortization 13 14 18 — 45 Capital Expenditures 131 104 25 — 260 (1) Reconciling items include the elimination of intercompany transactions, corporate-related assets and other amounts to reconcile to consolidated totals. Specific reconciling items for equity income represents a gain associated with the 2021 Yanfeng Transaction of $1,181 million, a gain of $33 million on the sale of Adient's interest in SJA, a $5 million gain on previously held interest at YFAS, offset by $5 million of purchase accounting amortization and $1 million of restructuring related charges. Corporate-related assets primarily include cash, deferred income tax assets, and receivables related to the 2021 Yanfeng Transaction. Year Ended September 30, 2020 Reportable Segments Reconciling Items (1) Consolidated (in millions) Americas EMEA Asia Net Sales $ 5,889 5,148 $ 1,822 (189) $ 12,670 Equity Income 1 8 256 (243) 22 Total Assets 3,019 2,658 2,868 1,716 10,261 Depreciation 128 129 38 — 295 Amortization 13 8 16 — 37 Capital Expenditures 138 164 24 — 326 (1) Reconciling items include the elimination of intercompany transactions, corporate-related assets and other amounts to reconcile to consolidated totals. Specific reconciling items for equity income represents a $231 million non-cash impairment of Adient's YFAI investment, $8 million of restructuring related charges, $3 million of purchase accounting amortization and a $1 million charge for tax adjustments associated with YFAI. Corporate-related assets primarily include cash and deferred income tax assets.
Schedule of Operations by Geographical Areas	Financial information relating to Adient's operations by geographic area is as follows: Net Sales Year Ended September 30, (in millions) 2022 2021 2020 Americas United States $ 5,876 $ 5,500 $ 4,983 Mexico 2,427 2,298 2,004 Other Americas 377 312 318 Regional Elimination (2,123) (1,946) (1,416) 6,557 6,164 5,889 EMEA Germany 862 1,101 1,061 Czech Republic 962 1,155 1,118 Other EMEA 4,232 4,761 4,392 Regional Elimination (1,292) (1,453) (1,423) 4,764 5,564 5,148 Asia China 1,374 642 517 Thailand 508 469 400 Japan 264 331 332 Other Asia 804 705 600 Regional Elimination (24) (24) (27) 2,926 2,123 1,822 Inter-segment elimination (126) (171) (189) Total $ 14,121 $ 13,680 $ 12,670 Adient started consolidating CQADNT in China after completing the acquisition on September 30, 2021. Refer to Note 3, “Acquisitions and Divestitures,” of the notes to the consolidated financial statements for additional information. Long-Lived Assets (consisting of net property, plant and equipment) Year Ended September 30, (in millions) 2022 2021 Americas United States $ 460 $ 467 Mexico 164 173 Other Americas 19 22 643 662 EMEA Germany 126 180 Poland 118 145 Czech Republic 29 41 Other EMEA 223 310 496 676 Asia China 111 125 Thailand 41 38 Japan 47 58 Other Asia 39 48 238 269 Total $ 1,377 $ 1,607

Nonconsolidated Partially-Own_2

Nonconsolidated Partially-Owned Affiliates (Tables)	12 Months Ended
	Sep. 30, 2022
Equity Method Investments and Joint Ventures [Abstract]
Schedule of Operating Information of Nonconsolidated Partially-Owned Affiliates	Operating information for nonconsolidated partially-owned affiliates is as follows: % ownership at September 30, Name of key partially-owned affiliate 2022 2021 KEIPER Seating Mechanisms Co., Ltd. (KEIPER, previously AYM) 50.0% 50.0% Changchun FAWAY Adient Automotive Systems Co. Ltd. (CFAA) 49.0% 49.0% Year Ended September 30, (in millions) 2022 2021 2020 Income statement data: Net sales $ 4,039 $ 8,809 $ 9,538 Gross profit $ 374 $ 1,008 $ 1,111 Net income $ 189 $ 733 $ 591 Net income attributable to the entity $ 187 $ 682 $ 563 September 30, (in millions) 2022 2021 Balance sheet data: Current assets $ 1,784 $ 1,792 Noncurrent assets $ 826 $ 874 Current liabilities $ 1,843 $ 1,841 Noncurrent liabilities $ 159 $ 145 Noncontrolling interests $ 6 $ —

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Sep. 30, 2022
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	The following table sets forth the location and amounts of net sales to and purchases from related parties included in Adient's consolidated statements of income (loss): Year Ended September 30, (in millions) 2022 2021 2020 Net sales to related parties Net sales $ 247 $ 273 $ 347 Purchases from related parties Cost of sales 434 558 566 The following table sets forth the location and amount of accounts receivable due from and payable to related parties in Adient's consolidated statements of financial position: September 30, (in millions) 2022 2021 Accounts receivable due from related parties Accounts receivable $ 34 $ 30 Accounts payable due to related parties Accounts payable 95 41

Basis of Presentation and Sum_4

Basis of Presentation and Summary of Significant Accounting Policies - Narratives (Details) $ / shares in Units, $ in Millions		12 Months Ended
	Oct. 01, 2019 USD ($)	Sep. 30, 2022 USD ($) entity $ / shares shares	Sep. 30, 2021 USD ($) entity	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Oct. 31, 2016 $ / shares shares
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Common stock, shares authorized (in shares) | shares		500,000,000				500,000,000
Preferred stock, shares authorized (in shares) | shares		100,000,000				100,000,000
Common stock, par value (in dollars per share) | $ / shares		$ 0.001				$ 0.001
Preferred stock, par value (in dollars per share) | $ / shares		$ 0.001				$ 0.001
Common stock, shares issued (in shares) | shares		94,858,156				93,671,810
Number of VIE entities | entity		2	2
Amount funded under accounts receivable repurchase program		$ 269	$ 132
Engineering, research and development, and other design and development costs		239	278
Accounting standards update [extensible list]	Accounting Standards Update 2016-02 [Member]
Operating lease right-of-use assets		266	335
Present value of lease liabilities		267	335
Stockholders' equity, including portion attributable to noncontrolling interest		2,375	2,718	$ 1,535	$ 2,189
Research and development costs		322	316	370
Research and development costs reimbursed by customers		194	210	223
Foreign currency translation gain (loss)		$ 6	$ (8)	$ (25)
Stellantis N.V. | Customer concentration risk | Net sales
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Concentration risk (as percent)		12%	13%	10%
Volkswagen Group | Customer concentration risk | Net sales
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Concentration risk (as percent)			11%	10%
Cumulative effect, period of adoption, adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Operating lease right-of-use assets	$ 380
Present value of lease liabilities	384
Stockholders' equity, including portion attributable to noncontrolling interest	$ 4				$ (4)
Minimum | Buildings and improvements
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Useful life		3 years
Minimum | Machinery and equipment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Useful life		3 years
Maximum | Buildings and improvements
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Useful life		40 years
Maximum | Machinery and equipment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Useful life		15 years
Current assets
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Engineering, research and development, and other design and development costs		$ 73	$ 66
Costs for molds, dies and other tools to be reimbursed by customer		74	77
Noncurrent assets
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Engineering, research and development, and other design and development costs		166	212
Costs for molds, dies and other tools to be reimbursed by customer		15	8
Property, plant and equipment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Costs for molds, dies and other tools with title		$ 53	$ 62

Basis of Presentation and Sum_5

Basis of Presentation and Summary of Significant Accounting Policies - VIE (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Variable Interest Entity [Line Items]
Current assets	$ 4,163	$ 5,086
Total assets	9,158	10,778	$ 10,261
Current liabilities	3,501	3,511
Noncurrent liabilities	3,237	4,309
Variable interest entity, primary beneficiary
Variable Interest Entity [Line Items]
Current assets	262	158
Noncurrent assets	113	88
Total assets	375	246
Current liabilities	233	143
Noncurrent liabilities	14	8
Total liabilities	$ 247	$ 151

Basis of Presentation and Sum_6

Basis of Presentation and Summary of Significant Accounting Policies - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Numerator:
Net income (loss) attributable to Adient	$ (120)	$ 1,108	$ (547)
Denominator:
Shares outstanding (in shares)	94.8	94.2	93.8
Effect of dilutive securities (in shares)	0	1.5	0
Diluted shares (in shares)	94.8	95.7	93.8
Earnings per share:
Basic (in dollars per share)	$ (1.27)	$ 11.76	$ (5.83)
Diluted (in dollars per share)	$ (1.27)	$ 11.58	$ (5.83)

Acquisitions and Divestitures -

Acquisitions and Divestitures - Narrative (Details) ¥ in Millions							1 Months Ended			3 Months Ended						4 Months Ended	6 Months Ended	7 Months Ended		9 Months Ended	12 Months Ended					32 Months Ended
	Oct. 31, 2021	Oct. 21, 2021 USD ($)	Sep. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Mar. 12, 2021 USD ($)	Sep. 30, 2020 USD ($) employee facility	Dec. 31, 2021 USD ($)	Nov. 30, 2021 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Sep. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2021 JPY (¥)	Jun. 30, 2022 USD ($)	Sep. 30, 2022 USD ($) venture	Sep. 30, 2022 JPY (¥) venture	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019	Sep. 30, 2022 USD ($)	Sep. 30, 2022 RUB (₽)	Jan. 31, 2020	Oct. 11, 2018
Business Acquisition [Line Items]
Acquisition of businesses, net of cash acquired																					$ 19,000,000		$ 211,000,000	$ 0
Acquisition related costs																							14,000,000
Pro forma sales																							14,529,000,000	13,250,000,000
Pro forma net income																							1,142,000,000	(527,000,000)
Net sales																					14,121,000,000		13,680,000,000	12,670,000,000
Foreign currency transaction (loss) before tax																					(6,000,000)		8,000,000	25,000,000
Business divestitures																					740,000,000		785,000,000	499,000,000
Intangible asset gross			$ 785,000,000						$ 785,000,000	$ 684,000,000		$ 785,000,000					$ 684,000,000	$ 785,000,000			684,000,000		785,000,000			$ 684,000,000
Loss on business divestitures - net																					0		26,000,000	13,000,000
Initial contributions from joint ventures															$ 28,000,000
Gain (loss) on deconsolidation																					0		26,000,000	13,000,000
Impairment																					0
Impairment of assets held for sale																							21,000,000
Assets held for sale			49,000,000						49,000,000	$ 0		49,000,000					$ 0	49,000,000			0		49,000,000			$ 0
Expected proceeds assets held for sale																							5,000,000
Total purchase consideration					$ 271,000,000
TURKEY
Business Acquisition [Line Items]
Expected proceeds assets held for sale		$ 36,000,000									$ 10,000,000									$ 46,000,000
France And Turkey
Business Acquisition [Line Items]
Impairment of assets held for sale																							9,000,000
Assets held for sale			$ 11,000,000						11,000,000			11,000,000						11,000,000					11,000,000
Americas | Reportable Segments
Business Acquisition [Line Items]
Net sales																					6,557,000,000		6,164,000,000	5,889,000,000
China
Business Acquisition [Line Items]
Loss on business divestitures - net																							5,000,000
China | Reportable Segments
Business Acquisition [Line Items]
Net sales																					1,374,000,000		642,000,000	517,000,000
Customer Relationships And Patented Technologies | Minimum
Business Acquisition [Line Items]
Useful life			3 years
Customer Relationships And Patented Technologies | Maximum
Business Acquisition [Line Items]
Useful life			12 years
CQADNT
Business Acquisition [Line Items]
Acquisition of businesses, net of cash acquired			$ 203,000,000
Cash acquired			55,000,000
Intangible assets			234,000,000						234,000,000			234,000,000						234,000,000					234,000,000
Total purchase consideration			258,000,000
LFADNT
Business Acquisition [Line Items]
Acquisition of businesses, net of cash acquired			8,000,000
Cash acquired			5,000,000
Intangible assets			6,000,000						$ 6,000,000			$ 6,000,000						$ 6,000,000					6,000,000
Total purchase consideration			13,000,000
YFAT
Business Acquisition [Line Items]
Business combination, deposit to acquire interest in joint venture																					$ 12,000,000	¥ 75
Business combination, deposit, percent of total consideration										50%							50%				50%					50%	50%
Business combination, percent of consideration paid at closing										50%							50%				50%					50%	50%
CQADNT And LFADNT
Business Acquisition [Line Items]
Acquisition of businesses, net of cash acquired			211,000,000
Cash acquired			60,000,000
Automotive Fabrics Manufacturing | Disposed of By Sale
Business Acquisition [Line Items]
Business divestitures						$ 170,000,000
Cash divested from deconsolidation						4,000,000
Disposal group, including discontinued operation, goodwill						$ 80,000,000																		80,000,000
Number of facilities sold | facility						11
Number of employees | employee						1,300
Disposal group, including discontinued operation, revenue																								99,000,000
Disposal group, including discontinued operation, operating income (loss)																								0
RECARO | Disposed of By Sale
Business Acquisition [Line Items]
Loss on business divestitures - net																								21,000,000
Entities in China and Properties in U.S. | Assets Held for Sale
Business Acquisition [Line Items]
Long-lived asset impairment charges																								21,000,000
Impairment of assets held for sale																					$ 6,000,000
Entities in China and Properties in U.S. | Assets Held for Sale | Americas | Reportable Segments
Business Acquisition [Line Items]
Long-lived asset impairment charges																								12,000,000
Entities in China and Properties in U.S. | Assets Held for Sale | China | Reportable Segments
Business Acquisition [Line Items]
Long-lived asset impairment charges																								9,000,000
Yanfeng
Business Acquisition [Line Items]
Master agreement, license revenue payment					$ 54,000,000
Yanfeng | Business Consulting Fee | Affiliated Entity
Business Acquisition [Line Items]
Related party expenses																							13,000,000
KEIPER Seating Mechanisms Co., Ltd | YFAT
Business Acquisition [Line Items]
Net purchase consideration																					24,000,000	¥ 150
EMEA
Business Acquisition [Line Items]
Long-lived asset impairment charges																					6,000,000
EMEA | Reportable Segments
Business Acquisition [Line Items]
Net sales																					4,764,000,000		5,564,000,000	5,148,000,000
EMEA | RUSSIAN FEDERATION
Business Acquisition [Line Items]
Asset impairment charge and allowance for credit loss											5,000,000
Long-lived asset impairment charges																					4,000,000
Consideration for disposal group | ₽																											₽ 1
Americas | Reportable Segments
Business Acquisition [Line Items]
Net sales																					$ 6,557,000,000		$ 6,164,000,000	5,889,000,000
YFAS
Business Acquisition [Line Items]
Distributed earnings			$ 100,000,000
Rate of return
Business Acquisition [Line Items]
Measurement input			0.135						0.135			0.135						0.135					0.135
Measurement Input, Cap Rate | Significant Unobservable Inputs (Level 3) | Valuation, Income Approach | Minimum
Business Acquisition [Line Items]
Reporting unit, measurement input										17.50%		15%
Measurement Input, Cap Rate | Significant Unobservable Inputs (Level 3) | Valuation, Income Approach | Maximum
Business Acquisition [Line Items]
Reporting unit, measurement input										21%		17.50%
Adient | YFAS
Business Acquisition [Line Items]
Limited liability company or limited partnership, members or limited partners, ownership interest			49.99%
SJA
Business Acquisition [Line Items]
Limited liability company or limited partnership, members or limited partners, ownership interest				50%
Adient Aerospace
Business Acquisition [Line Items]
Ownership interest (as percent)																													50.01%
Gain (loss) on deconsolidation																								4,000,000
YFAS
Business Acquisition [Line Items]
Proceeds from divestiture of interest in joint venture							$ 652,000,000		$ 489,000,000							$ 1,141,000,000		$ 1,257,000,000	¥ 8,064
Proceeds from Limited Partnership Investments								$ 41,000,000
Intangible asset gross			$ 92,000,000			$ 92,000,000			$ 92,000,000			$ 92,000,000						$ 92,000,000					$ 92,000,000	92,000,000
Finite-lived intangible assets, remaining amortization period																					18 years	18 years			18 years
YFAS | Yanfeng
Business Acquisition [Line Items]
Equity method investment, ownership percent					50.01%
YFAS | Measurement Input, Cap Rate | Significant Unobservable Inputs (Level 3) | Valuation, Income Approach
Business Acquisition [Line Items]
Reporting unit, measurement input										10.50%
AYM | Yanfeng
Business Acquisition [Line Items]
Equity method investment, ownership percent					50%
AYM | Adient
Business Acquisition [Line Items]
Equity method investment, ownership percent					50%
YFAT | Adient | Minimum
Business Acquisition [Line Items]
Limited liability company or limited partnership, members or limited partners, ownership interest					10%
YFAT | Adient | Maximum
Business Acquisition [Line Items]
Limited liability company or limited partnership, members or limited partners, ownership interest					25%
CQYFAS | YFAS
Business Acquisition [Line Items]
Limited liability company or limited partnership, members or limited partners, ownership interest					50%
CQYFAS | Adient
Business Acquisition [Line Items]
Limited liability company or limited partnership, members or limited partners, ownership interest					100%
CQYFAS | Boxun | The Boxun Agreement
Business Acquisition [Line Items]
Limited liability company or limited partnership, members or limited partners, ownership interest					25%
CQADNT | The Boxun Agreement
Business Acquisition [Line Items]
Proceeds from divestiture of interest in joint venture					$ 200,000,000		$ 15,000,000				32,000,000						$ 185,000,000
Net cash payment					194,000,000
YFAI
Business Acquisition [Line Items]
Equity method investment, ownership percent																												30%
(Gain) on sale of / impairment of nonconsolidated partially owned affiliates																					$ 10,000,000			231,000,000
Long-lived asset impairment charges														$ 231,000,000
Business divestitures																					$ 41,000,000		19,000,000	$ 309,000,000		$ 369,000,000
YFAI | Measurement Input, Cap Rate | Significant Unobservable Inputs (Level 3) | Valuation, Income Approach
Business Acquisition [Line Items]
Reporting unit, measurement input										15%
YFAI | Yanfeng
Business Acquisition [Line Items]
Limited liability company or limited partnership, members or limited partners, ownership interest	70%
YFAI | Adient
Business Acquisition [Line Items]
Limited liability company or limited partnership, members or limited partners, ownership interest	30%
Two Joint Ventures | Yanfeng
Business Acquisition [Line Items]
Equity method investment, ownership percent										25%							25%				25%					25%	25%
Number of joint ventures transferred | venture																					2	2
Proceeds from sale of equity method investments																					$ 3,000,000
(Gain) on sale of / impairment of nonconsolidated partially owned affiliates											$ 3,000,000
SJA
Business Acquisition [Line Items]
Proceeds from divestiture of interest in joint venture				$ 58,000,000
Equity method investment, realized gain (loss) on disposal													$ 33,000,000										$ 33,000,000
Adient Aerospace
Business Acquisition [Line Items]
Equity method investment, ownership percent						19.99%																		19.99%
Cash divested from deconsolidation																								$ 37,000,000
Impairment																								21,000,000
Adient Aerospace | Americas
Business Acquisition [Line Items]
Gain (loss) on deconsolidation																								$ 4,000,000
Three Other Related Joint Ventures | YFAS
Business Acquisition [Line Items]
Proceeds from divestiture of interest in joint venture					$ 59,000,000
Langfang | YFAS
Business Acquisition [Line Items]
Limited liability company or limited partnership, members or limited partners, ownership interest					100%

Acquisitions and Divestitures_2

Acquisitions and Divestitures - Fair Value Allocation (Details) - USD ($) $ in Millions			12 Months Ended
	Sep. 30, 2021	Mar. 12, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Business Acquisition [Line Items]
Goodwill	$ 2,212		$ 2,057	$ 2,212	$ 2,057
Total purchase consideration		$ 271
Net cash paid			$ 19	211	$ 0
CQADNT
Business Acquisition [Line Items]
Cash	55			55
Accounts receivable	296			296
Inventory	37			37
Property, plant and equipment	86			86
Other assets	39			39
Goodwill	181			181
Intangible assets	234			234
Accounts payable	(252)			(252)
Other liabilities	(121)			(121)
Subtotal	555			555
Less: Interest already owned	103
Less: Redeemable noncontrolling interest	194			194
Total purchase consideration	258
Less: cash acquired	55
Net cash paid	203
LFADNT
Business Acquisition [Line Items]
Cash	5			5
Accounts receivable	2			2
Inventory	5			5
Property, plant and equipment	8			8
Other assets	2			2
Goodwill	8			8
Intangible assets	6			6
Accounts payable	(19)			(19)
Other liabilities	(4)			(4)
Subtotal	13			13
Less: Interest already owned	0
Less: Redeemable noncontrolling interest	0			$ 0
Total purchase consideration	13
Less: cash acquired	5
Net cash paid	$ 8

Inventories (Details)

Inventories (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 755	$ 750
Work-in-process	26	29
Finished goods	172	197
Inventories	$ 953	$ 976

Property, Plant and Equipment_2

Property, Plant and Equipment (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 4,170	$ 4,516
Less: accumulated depreciation	(2,793)	(2,909)
Property, plant and equipment - net	1,377	1,607
Buildings and improvements
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	1,053	1,167
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	2,889	3,087
Construction in progress
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	146	162
Land
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 82	$ 100

Property, Plant and Equipment -

Property, Plant and Equipment - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Property Subject to or Available for Operating Lease [Line Items]
Machinery and equipment and to accumulated depreciation	$ 2,793	$ 2,909
Restatement adjustment
Property Subject to or Available for Operating Lease [Line Items]
Machinery and equipment and to accumulated depreciation		1,400
Buildings and improvements
Property Subject to or Available for Operating Lease [Line Items]
Properties in gross building and improvements	12	15
Accumulated depreciation in gross buildings and improvements	$ 8	$ 9

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 2,212	$ 2,057
Business acquisitions		188
Business divestitures		(11)
Currency translation and other	(155)	(22)
Goodwill, ending balance	2,057	2,212
Americas
Goodwill [Roll Forward]
Goodwill, beginning balance	607	606
Business acquisitions		0
Business divestitures		0
Currency translation and other	0	1
Goodwill, ending balance	607	607
EMEA
Goodwill [Roll Forward]
Goodwill, beginning balance	354	368
Business acquisitions		0
Business divestitures		(11)
Currency translation and other	(59)	(3)
Goodwill, ending balance	295	354
Asia
Goodwill [Roll Forward]
Goodwill, beginning balance	1,251	1,083
Business acquisitions		188
Business divestitures		0
Currency translation and other	(96)	(20)
Goodwill, ending balance	$ 1,155	$ 1,251

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Narratives (Details) - USD ($)		3 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Goodwill [Line Items]
Impairment				$ 0
Intangible asset gross	$ 785,000,000	$ 684,000,000	$ 785,000,000	684,000,000	$ 785,000,000
Amortization of intangibles				52,000,000	$ 45,000,000	$ 37,000,000
Anticipated amortization expense, 2023		48,000,000		48,000,000
Anticipated amortization expense, 2024		47,000,000		47,000,000
Anticipated amortization expense, 2025		46,000,000		46,000,000
Anticipated amortization expense, 2026		44,000,000		44,000,000
Anticipated amortization expense, 2027		41,000,000		$ 41,000,000
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]					Restructuring and impairment costs
YFAS
Goodwill [Line Items]
Intangible asset gross	92,000,000		92,000,000		$ 92,000,000	$ 92,000,000
Finite-lived intangible assets, remaining amortization period				18 years			18 years
Impairment of definite-lived intangible assets					86,000,000
Customer relationships
Goodwill [Line Items]
Finite lived intangible assets acquired	176,000,000
Intangible asset gross	649,000,000	560,000,000	649,000,000	$ 560,000,000	649,000,000
Patented technology
Goodwill [Line Items]
Finite lived intangible assets acquired	60,000,000
Intangible asset gross	$ 86,000,000	$ 80,000,000	$ 86,000,000	$ 80,000,000	$ 86,000,000
Valuation, Income Approach | Measurement Input, Cap Rate | Significant Unobservable Inputs (Level 3) | YFAS
Goodwill [Line Items]
Reporting unit, measurement input		10.50%
Valuation, Income Approach | Minimum | Measurement Input, Cap Rate | Significant Unobservable Inputs (Level 3)
Goodwill [Line Items]
Reporting unit, measurement input		17.50%	15%
Valuation, Income Approach | Maximum | Measurement Input, Cap Rate | Significant Unobservable Inputs (Level 3)
Goodwill [Line Items]
Reporting unit, measurement input		21%	17.50%

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 684	$ 785
Accumulated Amortization	(217)	(230)
Net	467	555
Patented technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	80	86
Accumulated Amortization	(25)	(19)
Net	55	67
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	560	649
Accumulated Amortization	(163)	(178)
Net	397	471
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	19	26
Accumulated Amortization	(17)	(21)
Net	2	5
Miscellaneous
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	25	24
Accumulated Amortization	(12)	(12)
Net	$ 13	$ 12

Product Warranties (Details)

Product Warranties (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance at beginning of period	$ 23	$ 24
Accruals for warranties issued during the period	8	9
Changes in accruals related to pre-existing warranties (including changes in estimates)	0	(2)
Changes in accruals related to business acquisitions	0	1
Changes in accruals related to business divestitures	0	(1)
Currency translation	(1)	0
Settlements made (in cash or in kind) during the period	(9)	(8)
Balance at end of period	$ 21	$ 23

Leases - Components of Lease Co

Leases - Components of Lease Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Operating lease cost	$ 117	$ 125	$ 125
Short-term lease cost	20	20	24
Total lease cost	$ 137	$ 145	$ 149

Leases - Lease Assets and Liabi

Leases - Lease Assets and Liabilities Included in the Consolidated Statement of Financial Position (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Leases [Abstract]
Operating lease right-of-use assets	$ 266	$ 335
Operating lease liabilities - current	81	89
Operating lease liabilities - noncurrent	186	246
Present value of lease liabilities	$ 267	$ 335
Operating lease right of use asset, statement of financial position, extensible list	Other noncurrent liabilities	Other noncurrent liabilities
Operating lease liability, current, statement of financial position, extensible list	Other current liabilities	Other current liabilities
Operating lease liability, noncurrent, statement of financial position, extensible list	Other noncurrent liabilities	Other noncurrent liabilities
Weighted average remaining lease term:
Operating leases	6 years	6 years
Operating leases
Operating leases	5.60%	5.20%

Leases - Maturities of Operatin

Leases - Maturities of Operating Lease Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Leases [Abstract]
2023	$ 90
2024	67
2025	46
2026	29
2027	23
Thereafter	55
Total lease payments	310
Less: imputed interest	(43)
Present value of lease liabilities	$ 267	$ 335

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Right-of-use assets obtained in exchange for lease obligations:
Operating leases (non-cash activity)	$ 52	$ 109	$ 79
Operating cash flows:
Cash paid for amounts included in the measurement of lease liabilities	$ 116	$ 126	$ 125

Debt and Financing Arrangemen_3

Debt and Financing Arrangements - Long-term Debt (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Debt Instrument [Line Items]
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Long-term debt	Long-term debt
Finance lease obligation	$ 1	$ 1
Less: debt issuance costs	(18)	(32)
Gross long-term debt	2,575	3,679
Less: current portion	11	167
Long-term debt	2,564	3,512
Short-term debt:
Other bank borrowings	3	17
Short-term debt	$ 3	$ 17
Weighted average interest rate on short-term debt outstanding (as percent)	6%	380%
European Investment Bank Loan - EURIBOR plus 1.58% due in 2022 | EURIBOR
Debt Instrument [Line Items]
Basis spread	1.58%
Term Loan B - LIBOR plus 3.25% due in 2028
Debt Instrument [Line Items]
Long-term debt, gross	$ 988	$ 998
Term Loan B - LIBOR plus 3.25% due in 2028 | LIBOR
Debt Instrument [Line Items]
Interest rate	3.25%
Unsecured debt | 4.875% Notes due in 2026
Debt Instrument [Line Items]
Long-term debt, gross	$ 795	795	$ 797
Interest rate	4.875%
Unsecured debt | 3.50% Notes due in 2024
Debt Instrument [Line Items]
Long-term debt, gross	$ 809	1,161
Interest rate	3.50%
Unsecured debt | 9.00% Notes due in 2025
Debt Instrument [Line Items]
Long-term debt, gross	$ 0	600
Interest rate	9%
Unsecured debt | European Investment Bank Loan - EURIBOR plus 1.58% due in 2022
Debt Instrument [Line Items]
Long-term debt, gross	$ 0	$ 156
Unsecured debt | European Investment Bank Loan - EURIBOR plus 1.58% due in 2022 | EURIBOR
Debt Instrument [Line Items]
Basis spread	1.58%

Debt and Financing Arrangemen_4

Debt and Financing Arrangements - Narrative (Details)

1 Months Ended

3 Months Ended

12 Months Ended

Apr. 20, 2020 USD ($)

Feb. 28, 2022 USD ($)

Feb. 28, 2022 EUR (€)

Apr. 30, 2021 USD ($)

Mar. 31, 2021 USD ($)

Dec. 31, 2020 USD ($)

Sep. 30, 2020 USD ($)

Sep. 30, 2022 USD ($)

Sep. 30, 2021 USD ($)

Sep. 30, 2020 USD ($)

Sep. 30, 2022 EUR (€)

Feb. 28, 2022 EUR (€)

Debt Instrument [Line Items]

ABL credit facility springing maturity period

91 days

Deferred finance fee charges

$ 20,000,000

$ 8,000,000

$ 20,000,000

Total interest paid

192,000,000

$ 229,000,000

203,000,000

Revolving credit facility

Debt Instrument [Line Items]

Maximum borrowing capacity

1,250,000,000

Credit facility expansion (up to)

250,000,000

Remaining borrowing capacity

$ 899,000,000

Revolving credit facility | Minimum

Debt Instrument [Line Items]

Commitment fee on unused portion of commitments (as percent)

0.25%

Revolving credit facility | Maximum

Debt Instrument [Line Items]

Commitment fee on unused portion of commitments (as percent)

0.375%

Revolving credit facility | EURIBOR | Minimum

Debt Instrument [Line Items]

Basis spread

1.50%

Revolving credit facility | EURIBOR | Maximum

Debt Instrument [Line Items]

Basis spread

2%

Revolving credit facility | North American

Debt Instrument [Line Items]

Maximum borrowing capacity

$ 950,000,000

Revolving credit facility | European

Debt Instrument [Line Items]

Maximum borrowing capacity

300,000,000

Credit facility

Debt Instrument [Line Items]

Maximum borrowing capacity

150,000,000

Letter of Credit

Debt Instrument [Line Items]

Remaining borrowing capacity

13,000,000

Incremental term loan | Term loan

Debt Instrument [Line Items]

Face amount of debt

750,000,000

Notes due in 2026 | Senior notes

Debt Instrument [Line Items]

Face amount of debt

$ 800,000,000

Write off of deferred debt issuance cost

$ 12,000,000

Interest rate

7%

7%

Debt Instrument, unamortized premium

50,000,000

Interest payable

$ 21,000,000

4.875% Notes due in 2026 | Unsecured debt

Debt Instrument [Line Items]

Face amount of debt

$ 900,000,000

Interest rate

4.875%

4.875%

Repayments of unsecured debt

103,000,000

2,000,000

Long-term debt, gross

$ 797,000,000

$ 795,000,000

795,000,000

$ 797,000,000

3.50% Notes due in 2024 | Senior notes

Debt Instrument [Line Items]

Interest rate

3.50%

Maturity period

91 days

3.50% Notes due in 2024 | Unsecured debt

Debt Instrument [Line Items]

Face amount of debt | €

€ 1,000,000,000

Write off of deferred debt issuance cost

$ 1,000,000

€ 1,000,000

Interest rate

3.50%

3.50%

Debt Instrument, unamortized premium

4,000,000

€ 3,000,000

Interest payable

3,000,000

3,000,000

Long-term debt, gross

$ 809,000,000

1,161,000,000

Debt instrument, repurchased face amount

198,000,000

€ 177,000,000

Long-term debt

$ 809,000,000

€ 823,000,000

European Investment Bank Loan - EURIBOR plus 1.58% due in 2022 | EURIBOR

Debt Instrument [Line Items]

Basis spread

1.58%

European Investment Bank Loan - EURIBOR plus 1.58% due in 2022 | Unsecured debt

Debt Instrument [Line Items]

Face amount of debt | €

€ 135,000,000

Repayments of unsecured debt

$ 36,000,000

Long-term debt, gross

$ 0

156,000,000

European Investment Bank Loan - EURIBOR plus 1.58% due in 2022 | Unsecured debt | EURIBOR

Debt Instrument [Line Items]

Basis spread

1.58%

9.00% Notes due in 2025 | Senior notes

Debt Instrument [Line Items]

Face amount of debt

$ 600,000,000

Write off of deferred debt issuance cost

7,000,000

Interest rate

9%

Debt Instrument, unamortized premium

34,000,000

Interest payable

$ 19,000,000

Proceeds from debt, net of issuance costs

$ 591,000,000

Debt issuance costs, gross

$ 10,000,000

9.00% Notes due in 2025 | Unsecured debt

Debt Instrument [Line Items]

Interest rate

9%

9%

Long-term debt, gross

$ 0

600,000,000

Term Loan B - LIBOR plus 3.25% due in 2028

Debt Instrument [Line Items]

Long-term debt, gross

$ 988,000,000

998,000,000

Term Loan B - LIBOR plus 3.25% due in 2028 | Term loan

Debt Instrument [Line Items]

Basis spread

3.25%

Face amount of debt

$ 1,000,000,000

Debt instrument period percentage

1%

First lien secured net leverage ratio

1.75

Payment for debt amendment costs

$ 7,000,000

Write off of deferred debt issuance cost

$ 8,000,000

Debt and Financing Arrangemen_5

Debt and Financing Arrangements - Principal Payments (Details) $ in Millions	Sep. 30, 2022 USD ($)
Debt Disclosure [Abstract]
2023	$ 11
2024	819
2025	10
2026	805
2027	$ 10

Debt and Financing Arrangemen_6

Debt and Financing Arrangements - Net Financing Charges (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Debt Disclosure [Abstract]
Interest expense, net of capitalized interest costs	$ 161	$ 207	$ 216
Banking fees and debt issuance cost amortization	22	32	18
Interest income	(9)	(7)	(11)
Premium paid on repurchase of debt	38	49	0
Derivative loss on Yanfeng transaction	3	30	0
(Gain) on extinguishment of debt	0	0	(3)
Net financing charges	$ 215	$ 311	$ 220

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities - Narrative (Details) € in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2022 USD ($) instrument contract	Dec. 31, 2021 USD ($)	Sep. 30, 2022 USD ($) instrument	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2022 EUR (€) instrument	Mar. 31, 2022 USD ($)	Mar. 31, 2022 CNY (¥)	Apr. 30, 2021 USD ($) segment	Apr. 30, 2021 CNY (¥) segment
Derivative [Line Items]
Percentage of foreign exchange rate exposure hedged, minimum	70%		70%			70%
Percentage of foreign exchange rate exposure hedged, maximum	90%		90%			90%
Notional value of derivative liability									$ 1,123,000,000	¥ 7,482,000,000
Number of instruments | segment									2	2
Number of matured contracts | contract	1
Derivative loss			$ 3,000,000	$ 30,000,000	$ 0
Cash collateral pledged	$ 0		0	0
Cash collateral received	$ 0		$ 0	0
Interest rate cap
Derivative [Line Items]
Number of instruments | instrument	0		0			0
Contract One | Adient
Derivative [Line Items]
Net cash payment		$ 14,000,000
Contract Two
Derivative [Line Items]
Derivative loss				(14,000,000)
Unrealized loss on derivatives				16,000,000
Cash flow hedging
Derivative [Line Items]
Gain (loss) for ineffective portion of cash flow hedge				(2,000,000)
Cash flow hedging | Foreign currency exchange derivatives
Derivative [Line Items]
Gain (loss) for ineffective portion of cash flow hedge			$ 0		0
Net investment hedging | Foreign currency exchange derivatives
Derivative [Line Items]
Effective portion of pretax gains (loss) related to net investment hedges			151,000,000	17,000,000	(84,000,000)
Gains (losses) reclassified into income for net investment hedges			$ 0	$ 0	$ 0
Net investment hedging | Japan | Cross-currency interest rate swaps
Derivative [Line Items]
Number of instruments | instrument	0		0			0
Net investment hedging | China | Cross-currency interest rate swaps
Derivative [Line Items]
Notional value of derivative asset							$ 23,000,000	¥ 150,000,000
Derivatives and Hedging Activities Designated as Hedging Instruments under ASC 815
Derivative [Line Items]
Notional value of derivative liability	$ 809,000,000		$ 809,000,000			€ 823
Interest rate	3.50%		3.50%			3.50%

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities - Derivative Assets and Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Derivatives, Fair Value [Line Items]
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]	Other current assets	Other current assets
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]		Other noncurrent assets
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Foreign currency exchange derivatives
Derivatives, Fair Value [Line Items]
Total assets	$ 20
Derivatives and Hedging Activities Designated as Hedging Instruments under ASC 815
Derivatives, Fair Value [Line Items]
Total assets	17	$ 8
Derivative liability, noncurrent	809	1,161
Total liabilities	831	1,176
Derivatives and Hedging Activities Designated as Hedging Instruments under ASC 815 | Foreign currency exchange derivatives
Derivatives, Fair Value [Line Items]
Derivative asset, current	$ 17	$ 8
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other noncurrent assets	Other noncurrent assets
Derivative asset, noncurrent	$ 0	$ 0
Derivative liability, current	$ 20	$ 11
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other noncurrent liabilities	Other noncurrent liabilities
Derivative liability, noncurrent	$ 2	$ 4
Derivatives and Hedging Activities Not Designated as Hedging Instruments under ASC 815
Derivatives, Fair Value [Line Items]
Total assets	3	1
Derivative liability, noncurrent	0	0
Total liabilities	1	13
Derivatives and Hedging Activities Not Designated as Hedging Instruments under ASC 815 | Foreign currency exchange derivatives
Derivatives, Fair Value [Line Items]
Derivative asset, current	$ 3	$ 0
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other noncurrent assets	Other noncurrent assets
Derivative asset, noncurrent	$ 0	$ 1
Derivative liability, current	$ 0	$ 13
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other noncurrent liabilities	Other noncurrent liabilities
Derivative liability, noncurrent	$ 1	$ 0

Derivative Instruments and He_5

Derivative Instruments and Hedging Activities - Derivative Assets and Liabilities Offsetting (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Gross amount recognized, asset	$ 20	$ 9
Gross amount eligible for offsetting, asset	(19)	(9)
Net amount, asset	1	0
Gross amount recognized, liability	832	1,189
Gross amount eligible for offsetting, liability	(19)	(9)
Net amount, liability	$ 813	$ 1,180

Derivative Instruments and He_6

Derivative Instruments and Hedging Activities - Derivatives Gains and Losses (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Total		$ (33)	$ (34)	$ (3)
Foreign currency exchange derivatives | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Pre-tax gain (loss) on foreign currency exchange derivatives not designated as hedging instrument		0	(4)	(4)
Foreign currency exchange derivatives | Net financing charges
Derivative Instruments, Gain (Loss) [Line Items]
Pre-tax gain (loss) on foreign currency exchange derivatives not designated as hedging instrument		(33)	(30)	1
Foreign currency exchange derivatives | Cash flow hedging
Derivative Instruments, Gain (Loss) [Line Items]
Cash flow hedges on foreign currency exchange derivatives		8	29	(37)
Foreign currency exchange derivatives | Cash flow hedging | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Cash flow hedges on foreign currency exchange derivatives, reclassified from AOCI	$ (2)	$ 6	$ 2	$ (16)

Fair Value Measurements - Recur

Fair Value Measurements - Recurring Fair Value Measurements (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other current assets	Other current assets
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]		Other noncurrent assets
Total assets	$ 20	$ 9
Total liabilities	23	28
Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	20
Other current liabilities | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	20	24
Other noncurrent liabilities | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	3	4
Current assets | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset		8
Noncurrent assets | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset		1
Quoted Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	0	0
Total liabilities	0	0
Quoted Prices in Active Markets (Level 1) | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0
Quoted Prices in Active Markets (Level 1) | Other current liabilities | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	0	0
Quoted Prices in Active Markets (Level 1) | Other noncurrent liabilities | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	0	0
Quoted Prices in Active Markets (Level 1) | Current assets | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset		0
Quoted Prices in Active Markets (Level 1) | Noncurrent assets | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset		0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	20	9
Total liabilities	23	28
Significant Other Observable Inputs (Level 2) | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	20
Significant Other Observable Inputs (Level 2) | Other current liabilities | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	20	24
Significant Other Observable Inputs (Level 2) | Other noncurrent liabilities | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	3	4
Significant Other Observable Inputs (Level 2) | Current assets | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset		8
Significant Other Observable Inputs (Level 2) | Noncurrent assets | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset		1
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	0	0
Total liabilities	0	0
Significant Unobservable Inputs (Level 3) | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0
Significant Unobservable Inputs (Level 3) | Other current liabilities | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	0	0
Significant Unobservable Inputs (Level 3) | Other noncurrent liabilities | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	$ 0	0
Significant Unobservable Inputs (Level 3) | Current assets | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset		0
Significant Unobservable Inputs (Level 3) | Noncurrent assets | Foreign currency exchange derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset		$ 0

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details) $ in Billions	Sep. 30, 2022 USD ($) instrument	Sep. 30, 2021 USD ($)	Apr. 30, 2021 segment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of instruments | segment			2
Quoted Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-term debt | $	$ 2.4	$ 3.8
Interest rate cap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of instruments | instrument	0

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details)		12 Months Ended
	Oct. 31, 2016	Sep. 30, 2022 USD ($) shares	Sep. 30, 2021 USD ($) shares	Sep. 30, 2020 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation		$ 29,000,000	$ 36,000,000	$ 15,000,000
Income tax benefit recognized for share-based compensation arrangements		$ 0	$ 0	$ 0
Conversion ratio (in shares)	0.1
Stock options granted (in shares) | shares		0	0	0
Option exercised in period, intrinsic value		$ 1,000,000	$ 7,000,000	$ 1,000,000
Payments made in conjunction with exercise of SARs		$ 0
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Unrecognized compensation related to unvested share arrangements		$ 15,000,000
Recognition period for unrecognized compensation cost		1 year 8 months 12 days
Granted (in shares) | shares		354,148
Performance shares (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation related to unvested share arrangements		$ 18,000,000
Recognition period for unrecognized compensation cost		1 year 9 months 18 days
Performance period		3 years
Granted (in shares) | shares		263,573
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period		10 years
Stock options | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		2 years
Stock options | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Stock appreciation rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) | shares		0
Payments made in conjunction with exercise of SARs		$ 2,000,000	$ 2,000,000	$ 1,000,000

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted Stock (Details) - Restricted stock	12 Months Ended
	Sep. 30, 2022 $ / shares shares
Weighted Average Price
Nonvested, beginning period (in dollars per share) | $ / shares	$ 26.01
Granted (in dollars per share) | $ / shares	46.18
Vested (in dollars per share) | $ / shares	27.57
Forfeited (in dollars per share) | $ / shares	28.91
Nonvested, ending period (in dollars per share) | $ / shares	$ 32.94
Restricted Shares/Units
Nonvested, beginning period (in shares) | shares	1,148,888
Granted (in shares) | shares	354,148
Vested (in shares) | shares	(547,123)
Forfeited (in shares) | shares	(83,496)
Nonvested, ending period (in shares) | shares	872,417

Stock-Based Compensation - Perf

Stock-Based Compensation - Performance Shares (Details) - Performance shares (PSUs)	12 Months Ended
	Sep. 30, 2022 $ / shares shares
Weighted Average Price
Nonvested, beginning period (in dollars per share) | $ / shares	$ 24.40
Granted (in dollars per share) | $ / shares	46.79
Vested (in dollars per share) | $ / shares	29.18
Forfeited (in dollars per share) | $ / shares	19.78
Nonvested, ending period (in dollars per share) | $ / shares	$ 29.51
Performance Shares/Units
Nonvested, beginning period (in shares) | shares	1,223,180
Granted (in shares) | shares	263,573
Vested (in shares) | shares	(252,149)
Forfeited (in shares) | shares	(165,890)
Nonvested, ending period (in shares) | shares	1,068,714

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock Options (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Sep. 30, 2022 USD ($) $ / shares shares
Weighted Average Option Price
Outstanding options, beginning period (in dollars per share) | $ / shares	$ 32.77
Exercised (in dollars per share) | $ / shares	26.36
Forfeited or expired (in dollars per share) | $ / shares	27.53
Outstanding options, ending period (in dollars per share) | $ / shares	38.32
Options exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 38.32
Shares Subject to Option
Options outstanding at beginning period (in shares) | shares	93,790
Options exercised (in shares) | shares	(40,571)
Options forfeited, forfeited or expired (in shares) | shares	(3,280)
Options outstanding at ending period (in shares) | shares	49,939
Options exercisable (in shares) | shares	49,939
Weighted Average Remaining Contractual Life (years)
Options outstanding, weighted average remaining contractual life	1 year 2 months 12 days
Options exercisable, weighted average remaining contractual life	1 year 2 months 12 days
Aggregate Intrinsic Value (in millions)
Options outstanding, aggregate intrinsic value | $	$ 0
Options exercisable, aggregate intrinsic value | $	$ 0
Former Parent plan
Weighted Average Option Price
Options exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 25.67
Shares Subject to Option
Options exercisable (in shares) | shares	20,971
Weighted Average Remaining Contractual Life (years)
Options exercisable, weighted average remaining contractual life	0 days
Aggregate Intrinsic Value (in millions)
Options exercisable, aggregate intrinsic value | $	$ 0
Adient plan
Weighted Average Option Price
Options exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 47.48
Shares Subject to Option
Options exercisable (in shares) | shares	28,968
Weighted Average Remaining Contractual Life (years)
Options exercisable, weighted average remaining contractual life	2 years 1 month 6 days
Aggregate Intrinsic Value (in millions)
Options exercisable, aggregate intrinsic value | $	$ 0
Former Parent and Adient plan
Weighted Average Option Price
Options exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 38.32
Shares Subject to Option
Options exercisable (in shares) | shares	49,939
Weighted Average Remaining Contractual Life (years)
Options exercisable, weighted average remaining contractual life	1 year 2 months 12 days
Aggregate Intrinsic Value (in millions)
Options exercisable, aggregate intrinsic value | $	$ 0

Stock-Based Compensation - St_2

Stock-Based Compensation - Stock Appreciation Rights (Details) - Stock appreciation rights (SARs) $ / shares in Units, $ in Millions	12 Months Ended
	Sep. 30, 2022 USD ($) $ / shares shares
Weighted Average SAR Price
Outstanding, beginning period (in dollars per share)	$ 33.29
Exercised (in dollars per share)	25.84
Forfeited or expired (in dollars per share)	27.50
Outstanding, ending period (in dollars per share)	43.87
Shares exercisable, weighted average exercise price (in dollars per share)	$ 43.87
Shares Subject to SAR
Shares outstanding at beginning of period (In shares) | shares	42,454
Exercised (in shares) | shares	(56,457)
Forfeited or expired (In shares) | shares	(4,973)
Shares outstanding at ending of period (In shares) | shares	103,884
Shares exercisable (in shares) | shares	42,454
Weighted Average Remaining Contractual Life (years)
Outstanding	2 years
Exercisable	2 years
Aggregate Intrinsic Value (in millions)
Outstanding | $	$ 0
Exercisable | $	$ 0
Former Parent plan
Weighted Average SAR Price
Shares exercisable, weighted average exercise price (in dollars per share)	$ 43.94
Shares Subject to SAR
Shares exercisable (in shares) | shares	37,705
Weighted Average Remaining Contractual Life (years)
Exercisable	2 years
Aggregate Intrinsic Value (in millions)
Exercisable | $	$ 0
Adient plan
Weighted Average SAR Price
Shares exercisable, weighted average exercise price (in dollars per share)	$ 43.25
Shares Subject to SAR
Shares exercisable (in shares) | shares	4,749
Weighted Average Remaining Contractual Life (years)
Exercisable	1 year 7 months 6 days
Aggregate Intrinsic Value (in millions)
Exercisable | $	$ 0
Former Parent and Adient plan
Weighted Average SAR Price
Shares exercisable, weighted average exercise price (in dollars per share)	$ 43.87

Equity and Noncontrolling Int_3

Equity and Noncontrolling Interests - Changes in AOCI (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 2,718	$ 1,535	$ 2,189
Aggregate adjustment for the period, net of tax	(249)	37	(89)
Current period changes in fair value, net of tax	0	20	(20)
Net reclassifications to AOCI	(1)	(1)	0
Ending balance	2,375	2,718	1,535
Foreign currency translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(617)	(634)	(558)
Aggregate adjustment for the period, net of tax	(219)	17	(76)
Ending balance	(836)	(617)	(634)
Realized and unrealized gains (losses) on derivatives
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(8)	(28)	(8)
Current period changes in fair value, net of tax	6	22	(34)
Reclassification to income, net of tax	(6)	(2)	14
Ending balance	(8)	(8)	(28)
Pension plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(2)	(3)	(3)
Net reclassifications to AOCI	1	1	0
Ending balance	(1)	(2)	(3)
AOCI attributable to parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(627)	(665)	(569)
Current period changes in fair value, net of tax		20	(20)
Net reclassifications to AOCI	(1)	(1)
Ending balance	$ (845)	$ (627)	$ (665)

Equity and Noncontrolling Int_4

Equity and Noncontrolling Interests - Redeemable Noncontrolling Interest (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Stockholders' equity attributable to noncontrolling interest	$ 342
Dividends	(53)	$ (42)	$ (54)
Stockholders' equity attributable to noncontrolling interest	302	342
Redeemable noncontrolling interest
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Stockholders' equity attributable to noncontrolling interest	240	43	51
Net income	35	25	19
Dividends	(66)	(14)	(23)
Business acquisition	0	194	0
Change in noncontrolling interest share	(153)	0	0
Foreign currency translation adjustments	(11)	(8)	(4)
Stockholders' equity attributable to noncontrolling interest	$ 45	$ 240	$ 43

Retirement Plans - Narratives (

Retirement Plans - Narratives (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension plan, projected benefit obligation (ABO)	$ 129	$ 204
Pension plan, accumulated benefit obligation (ABO)	112	182
Pension plan, fair value of plan assets (ABO)	37	72
Pension plan, projected benefit obligation (PBO)	129	204
Pension plan, accumulated benefit obligation (PBO)	112	182
Pension plan, fair value of plan assets (PBO)	37	72
Amounts in AOCI	2	3
Pension plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, contributions	16	23
Expected contributions in the next fiscal year	14
Savings and investment plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Contribution expense	$ 23	$ 44

Retirement Plans - Projected Be

Retirement Plans - Projected Benefit Payments (Details) - Pension plan $ in Millions	Sep. 30, 2022 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023	$ 21
2024	19
2025	21
2026	23
2027	25
2028-2032	$ 155

Retirement Plans - Plan Assets

Retirement Plans - Plan Assets by Asset Category (Details) - Pension plan - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	$ 283	$ 493	$ 486
Quoted Prices in Active Markets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	72	113
Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	148	305
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	7	7
Net Asset Value (NAV)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	56	68
Cash
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	2	5
Cash | Quoted Prices in Active Markets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	2	5
Cash | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	0	0
Cash | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	0	0
Cash | Net Asset Value (NAV)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	0	0
Domestic
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	1	12
Domestic | Quoted Prices in Active Markets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	1	2
Domestic | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	0	2
Domestic | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	0	0
Domestic | Net Asset Value (NAV)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	0	8
International - Developed
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	18	44
International - Developed | Quoted Prices in Active Markets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	14	27
International - Developed | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	0	7
International - Developed | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	0	0
International - Developed | Net Asset Value (NAV)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	4	10
International - Emerging
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	1	2
International - Emerging | Quoted Prices in Active Markets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	0	0
International - Emerging | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	0	2
International - Emerging | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	0	0
International - Emerging | Net Asset Value (NAV)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	1	0
Government
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	125	237
Government | Quoted Prices in Active Markets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	33	45
Government | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	67	168
Government | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	0	0
Government | Net Asset Value (NAV)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	25	24
Corporate/Other
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	76	82
Corporate/Other | Quoted Prices in Active Markets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	22	34
Corporate/Other | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	43	38
Corporate/Other | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	0	0
Corporate/Other | Net Asset Value (NAV)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	11	10
Hedge Fund
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	38	88
Hedge Fund | Quoted Prices in Active Markets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	0	0
Hedge Fund | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	38	88
Hedge Fund | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	0	0
Hedge Fund | Net Asset Value (NAV)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	0	0
Real Estate
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	22	23
Real Estate | Quoted Prices in Active Markets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	0	0
Real Estate | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	0	0
Real Estate | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	7	7
Real Estate | Net Asset Value (NAV)
Defined Benefit Plan Disclosure [Line Items]
Plan assets, fair value	$ 15	$ 16

Retirement Plans - Changes in t

Retirement Plans - Changes in the Fair Value of Pension Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Change in Plan Assets:
Unrealized gain	$ 0	$ 1
Pension plan
Change in Plan Assets:
Fair value of plan assets at beginning of year	493	486
Fair value of plan assets at end of year	283	493
Significant Unobservable Inputs (Level 3) | Pension plan
Change in Plan Assets:
Fair value of plan assets at beginning of year	7
Fair value of plan assets at end of year	7	7
Real estate | Significant Unobservable Inputs (Level 3) | Pension plan
Change in Plan Assets:
Fair value of plan assets at beginning of year	7	6
Redemptions	0	0
Fair value of plan assets at end of year	$ 7	$ 7

Retirement Plans - Funded Statu

Retirement Plans - Funded Status (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Change in Projected Benefit Obligation:
Service cost	$ 7	$ 8	$ 7
Interest cost	10	9	10
Pension plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Accumulated Benefit Obligation	322	552
Change in Projected Benefit Obligation:
Projected benefit obligation at beginning of year	574	606
Service cost	7	8
Interest cost	11	9
Plan participant contributions	0	0
Actuarial (gain) loss	(169)	(29)
Benefits paid	(20)	(20)
Settlements and curtailments	0	(16)
Divestitures	0	(2)
Currency translation adjustment	(63)	18
Projected benefit obligation at end of year	340	574	606
Change in Plan Assets:
Fair value of plan assets at beginning of year	493	486
Actual return on plan assets	(149)	4
Employer contributions/(distributions)	16	23
Benefits paid	(20)	(20)
Settlements and curtailments	(1)	(16)
Currency translation adjustment	(56)	16
Fair value of plan assets at end of year	283	493	$ 486
Funded status	(57)	(81)
Prepaid benefit cost | Pension plan
Change in Plan Assets:
Funded status	35	51
Accrued benefit liability | Pension plan
Change in Plan Assets:
Funded status	$ (92)	$ (132)

Retirement Plans - Weighted Ave

Retirement Plans - Weighted Average Assumptions (Details) - Pension plan - Weighted Average	Sep. 30, 2022	Sep. 30, 2021
U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	5.51%	3.06%
Non-U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	4.98%	1.71%
Rate of compensation increase	4.43%	3.06%

Retirement Plans - Components a

Retirement Plans - Components and Assumptions of Net Periodic Benefit Cost (Credit) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 7	$ 8	$ 7
Interest cost	10	9	10
Expected return on plan assets	$ (14)	$ (18)	$ (19)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other pension expense (income)	Other pension expense (income)	Other pension expense (income)
Net actuarial (gain) loss	$ (7)	$ (15)	$ 22
Settlement (gain) loss	1	0	1
Net periodic benefit cost (credit)	(3)	(16)	$ 21
Pension plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	7	8
Interest cost	$ 11	$ 9
Pension plan | U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	3.06%	2.91%	3.34%
Expected return on plan assets	5.75%	5.75%	5.75%
Pension plan | Non-U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	2.14%	1.70%	1.85%
Expected return on plan assets	3.20%	3.68%	4.01%
Rate of compensation increase	4.05%	4.15%	3.66%

Restructuring and Impairment _3

Restructuring and Impairment Costs -Narrative (Details) employee in Thousands, $ in Millions	12 Months Ended
	Sep. 30, 2022 USD ($) employee plant	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 60	$ 115
Restructuring and impairment costs	$ 25	21	$ 238
Number of positions eliminated to date | employee	13
Number of positions eliminated | employee	12
Number of plants expected to close | plant	25
Number of plants closed | plant	18
2022 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	$ 25
Restructuring and related cost, expected cost adjustment	10
Restructuring reserve, accrual adjustment	1
Restructuring reserve	18	25
Payments for restructuring	6
2022 Restructuring Plan | Employee Severance and Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, accrual adjustment	0
Restructuring reserve	19	25
Payments for restructuring	6
2021 restructuring plan
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, accrual adjustment	3	16
Restructuring reserve	3	22	27
Payments for restructuring	16	5
2021 restructuring plan | Employee Severance and Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		27
Restructuring reserve, accrual adjustment	1
Restructuring reserve	5	22	27
Payments for restructuring	16	5
2021 restructuring plan | EMEA
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		23
2021 restructuring plan | Americas
Restructuring Cost and Reserve [Line Items]
Restructuring reserve		3
2021 restructuring plan | Asia
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		1
2020 restructuring plan
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, accrual adjustment	15	5	20
Restructuring reserve	34	77	169
Restructuring and impairment costs			205
Payments for restructuring	28	87
2020 restructuring plan | Employee Severance and Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, accrual adjustment	7	6
Restructuring reserve	40	75	168
Payments for restructuring	28	$ 87
2020 restructuring plan | EMEA
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs			175
2020 restructuring plan | Americas
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs			20
2020 restructuring plan | Asia
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs			$ 10
Restructuring plan 2019, 2018 & 2017
Restructuring Cost and Reserve [Line Items]
Payments for restructuring	7
2019 restructuring plan
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	2
2018 restructuring plan
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	1
2017 restructuring plan
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 2

Restructuring and Impairment _4

Restructuring and Impairment Costs - Changes in Reserve (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance	$ 115
Restructuring reserve ending balance	60	$ 115
2022 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance	25
Utilized - cash	(6)
Noncash adjustment - other	(1)
Restructuring reserve ending balance	18	25
2021 restructuring plan
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance	22	27
Utilized - cash	(16)	(5)
Noncash adjustment - other	(3)	(16)
Restructuring reserve ending balance	3	22	$ 27
2020 restructuring plan
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance	77	169
Utilized - cash	(28)	(87)
Noncash adjustment - other	(15)	(5)	(20)
Restructuring reserve ending balance	34	77	169
Employee Severance and Termination Benefits | 2022 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance	25
Utilized - cash	(6)
Noncash adjustment - other	0
Restructuring reserve ending balance	19	25
Employee Severance and Termination Benefits | 2021 restructuring plan
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance	22	27
Utilized - cash	(16)	(5)
Noncash adjustment - other	(1)
Restructuring reserve ending balance	5	22	27
Employee Severance and Termination Benefits | 2020 restructuring plan
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance	75	168
Utilized - cash	(28)	(87)
Noncash adjustment - other	(7)	(6)
Restructuring reserve ending balance	40	75	168
Currency Translation | 2022 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance	0
Utilized - cash	0
Noncash adjustment - other	(1)
Restructuring reserve ending balance	(1)	0
Currency Translation | 2021 restructuring plan
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance	0	0
Utilized - cash	0	0
Noncash adjustment - other	(2)
Restructuring reserve ending balance	(2)	0	0
Currency Translation | 2020 restructuring plan
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance	2	1
Utilized - cash	0	0
Noncash adjustment - other	(8)	1
Restructuring reserve ending balance	$ (6)	$ 2	$ 1

Income Taxes - Consolidated Inc

Income Taxes - Consolidated Income (Loss) Before Income Taxes and Noncontrolling Interests (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Income Tax Contingency [Line Items]
Income before income taxes and noncontrolling interests	$ 54	$ 1,439	$ (429)
Foreign tax authority | Ireland
Income Tax Contingency [Line Items]
Income before income taxes and noncontrolling interests	(2)	(1)	(3)
Foreign tax authority | Other Foreign
Income Tax Contingency [Line Items]
Income before income taxes and noncontrolling interests	651	1,684	(315)
United States
Income Tax Contingency [Line Items]
Income before income taxes and noncontrolling interests	$ (595)	$ (244)	$ (111)

Income Taxes - Components of Pr

Income Taxes - Components of Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Current
Current income tax expense (benefit)	$ 89	$ 209	$ 90
Deferred
Deferred income tax expense (benefit)	5	40	(33)
Income tax provision	94	249	57
Foreign tax authority | Ireland
Current
Current foreign tax expense	(1)	1	0
Deferred
Deferred foreign tax expense	1	1	0
Foreign tax authority | Other Foreign
Current
Current foreign tax expense	84	207	91
Deferred
Deferred foreign tax expense	5	40	(33)
United States
Current
US - Federal and State	6	1	(1)
Deferred
US - Federal and State	$ (1)	$ (1)	$ 0

Income Taxes - Effective Tax Ra

Income Taxes - Effective Tax Rate Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Tax expense at Ireland statutory rate	$ 7	$ 180	$ (54)
State and local income taxes, net of federal benefit	(38)	(15)	(30)
Foreign tax rate differential	(1)	(6)	(127)
Notional interest deduction	(6)	(10)	(44)
Credits and incentives	(15)	(11)	(7)
Goodwill impairment	0	0	9
Repatriation of foreign earnings	24	18	18
Foreign exchange	(2)	0	(1)
Impact of tax rate changes	(3)	(26)	(3)
Audit settlements and change in uncertain tax positions	(2)	24	56
Change in valuation allowance	94	(85)	332
Impairment of subsidiaries	0	35	(24)
Tax impact of corporate equity and business restructuring transactions	30	133	(77)
Other	6	12	9
Income tax provision	$ 94	$ 249	$ 57

Income Taxes - Deferred Taxes (

Income Taxes - Deferred Taxes (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Other noncurrent assets	$ 111	$ 134
Other noncurrent liabilities	(198)	(212)
Net deferred tax asset/(liability)	$ (87)	$ (78)

Income Taxes - Temporary Differ

Income Taxes - Temporary Differences and Carryforwards (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Deferred tax assets:
Accrued expenses and reserves	$ 87	$ 126
Employee and retiree benefits	38	52
Net operating loss and other credit carryforwards	1,226	1,056
Property, plant and equipment	113	159
Intangible assets	150	181
Operating lease liabilities	61	79
Research and development	27	23
Other	2	12
Deferred tax assets:	1,704	1,688
Valuation allowances	(1,662)	(1,637)
Deferred tax assets, net	42	51
Deferred tax liabilities:
Unremitted earnings of foreign subsidiaries	35	32
Indirect tax credits	25	18
Foreign currency adjustments	8	0
Operating lease right-of-use assets	61	79
Deferred tax liabilities:	129	129
Net deferred tax asset/(liability)	$ (87)	$ (78)

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Income Tax Contingency [Line Items]
Net operating loss carryforwards				$ 4,600
Net operating loss carryforwards set to expire between 2023 and 2042				2,400
Operating loss carryforwards, valuation allowance				3,300
Income tax provision (benefit)				94	$ 249	$ 57
Unrecognized tax benefits	$ 499		$ 483	499	499	483	$ 414
Unrecognized tax benefits that would impact effective tax rate				115
Net accrued interest	18		15	22	18	15
Unremitted earnings of foreign subsidiaries	32			35	32
Income taxes paid				77	78	98
Tax adjustments					36
Gain on indirect tax recoveries				29	38	0
China
Income Tax Contingency [Line Items]
Income tax benefit from tax exempt income	$ 13
Yanfeng
Income Tax Contingency [Line Items]
Tax on gain on disposition of equity method investment					$ 134
Automotive Fabrics Manufacturing
Income Tax Contingency [Line Items]
Income tax provision (benefit)			(3)
YFAI
Income Tax Contingency [Line Items]
Income tax provision (benefit)			$ (16)
Tax adjustments						1
Yanfeng
Income Tax Contingency [Line Items]
Goodwill impairment				7
2020 restructuring plan | Restructuring charges
Income Tax Contingency [Line Items]
Income tax provision (benefit)						$ (6)
Czech Republic
Income Tax Contingency [Line Items]
Income tax provision (benefit)				(11)
Other Jurisdictions
Income Tax Contingency [Line Items]
Income tax provision (benefit)				(2)
Receita Federal do Brasil
Income Tax Contingency [Line Items]
Income tax provision (benefit)				4
Tax adjustments				32
Foreign tax authority | Luxembourg | CANADA
Income Tax Contingency [Line Items]
Income tax provision (benefit)				12
Foreign tax authority | United Kingdom | Japan
Income Tax Contingency [Line Items]
Income tax provision (benefit)				3
Foreign tax authority | Poland | Other Jurisdictions
Income Tax Contingency [Line Items]
Income tax provision (benefit)				3
Foreign tax authority | Czech Republic
Income Tax Contingency [Line Items]
Income tax provision (benefit)				5
Foreign tax authority | Korea
Income Tax Contingency [Line Items]
Income tax provision (benefit)				5
Foreign tax authority | Mexico
Income Tax Contingency [Line Items]
Income tax provision (benefit)				8
Foreign tax authority | Other Jurisdictions
Income Tax Contingency [Line Items]
Income tax provision (benefit)				$ 4
Foreign tax authority | Secretariat of the Federal Revenue Bureau of Brazil
Income Tax Contingency [Line Items]
Income tax provision (benefit)		$ 13
Gain on indirect tax recoveries		$ 38

Income Taxes - Unrecognized Tax

Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Unrecognized Tax Benefits [Roll Forward]
Beginning balance	$ 499	$ 483	$ 414
Additions for tax positions related to the current year	62	29	96
Additions for tax positions of prior years	2	11	17
Reductions for tax positions of prior years	(52)	(9)	(38)
Settlements with taxing authorities	(3)	(12)	(4)
Statute closings	(9)	(3)	(2)
Ending balance	$ 499	$ 499	$ 483

Segment Information - EBITDA Sc

Segment Information - EBITDA Schedule (Details) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2021 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2022 USD ($) segment	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)
Segment Reporting Information [Line Items]
Reportable segments | segment			3
Impairment of assets held for sale				$ 21
Held for sale asset impairments				8
Loss on business divestitures - net			$ 0	26	$ 13
Gain (loss) on business divestitures - net			0	(26)	(13)
Purchase accounting amortization			2	5	3
Integration-related costs			8	19	15
Tax adjustments				$ 36
Tax credits, recovery period				20 years
Net Sales			14,121	$ 13,680	12,670
Corporate - related costs			6	22	(16)
Restructuring and impairment costs			(25)	(21)	(238)
Purchase accounting amortization			(54)	(50)	(40)
Restructuring related charges			(6)	(9)	(20)
Gain on sale / (impairment) of nonconsolidated partially-owned affiliates			(10)	1,214	(231)
Depreciation			(298)	(285)	(295)
Stock based compensation			(29)	(36)	(15)
Earnings (loss) before interest and income taxes			259	1,726	(195)
Net financing charges			(215)	(311)	(220)
Other pension income (expense)			10	24	(14)
Income (loss) before income taxes			54	1,439	(429)
EMEA
Segment Reporting Information [Line Items]
Impairment of assets held for sale				10
EMEA | Employee Severance and Termination Benefits
Segment Reporting Information [Line Items]
Restructuring charges				175
China
Segment Reporting Information [Line Items]
Loss on business divestitures - net				5
China | Land
Segment Reporting Information [Line Items]
Gain (loss) on disposition of property plant equipment			7
SOUTH AFRICA
Segment Reporting Information [Line Items]
(Gain) on sale of / impairment of nonconsolidated partially owned affiliates			7
BRAZIL
Segment Reporting Information [Line Items]
Tax adjustments			32	38
TURKEY
Segment Reporting Information [Line Items]
Gain (loss) on disposition of other assets			(2)
Tax adjustments			14
Asia
Segment Reporting Information [Line Items]
(Gain) on sale of / impairment of nonconsolidated partially owned affiliates			3
Miscellaneous | China
Segment Reporting Information [Line Items]
Intangible asset impairment charge				24
Adient Aerospace
Segment Reporting Information [Line Items]
Gain (loss) on business divestitures - net					(4)
Yanfeng
Segment Reporting Information [Line Items]
Loss associated with certain aspects of sale				21
Gain on completion of transaction					12
Equity method investment, realized gain (loss) on disposal				1,181
SJA
Segment Reporting Information [Line Items]
Equity method investment, realized gain (loss) on disposal	$ 33			33
YFAS
Segment Reporting Information [Line Items]
Gain on completion of transaction				5
YFAI
Segment Reporting Information [Line Items]
Long-lived asset impairment charges		$ 231
(Gain) on sale of / impairment of nonconsolidated partially owned affiliates			10		231
Restructuring charges			1	1	8
Purchase accounting amortization			2	5	3
Tax adjustments					1
Americas | RECARO
Segment Reporting Information [Line Items]
Loss on business divestitures - net					21
EMEA
Segment Reporting Information [Line Items]
Long-lived asset impairment charges			6
EMEA | RUSSIAN FEDERATION
Segment Reporting Information [Line Items]
Long-lived asset impairment charges			4
Reportable Segments | EMEA
Segment Reporting Information [Line Items]
Net Sales			4,764	5,564	5,148
Reportable Segments | China
Segment Reporting Information [Line Items]
Net Sales			1,374	642	517
Reportable Segments | Germany
Segment Reporting Information [Line Items]
Net Sales			862	1,101	1,061
Reportable Segments | Asia
Segment Reporting Information [Line Items]
Net Sales			2,926	2,123	1,822
Reportable Segments | Americas
Segment Reporting Information [Line Items]
Net Sales			6,557	6,164	5,889
Adjusted EBITDA			242	232	228
Reportable Segments | EMEA
Segment Reporting Information [Line Items]
Net Sales			4,764	5,564	5,148
Adjusted EBITDA			138	277	101
Reportable Segments | Asia
Segment Reporting Information [Line Items]
Net Sales			2,926	2,123	1,822
Adjusted EBITDA			383	486	424
Eliminations
Segment Reporting Information [Line Items]
Net Sales			(126)	(171)	(189)
Corporate-related costs
Segment Reporting Information [Line Items]
Corporate - related costs			$ (88)	$ (78)	$ (80)

Segment Information - Other Rec

Segment Information - Other Reconciling Items (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Net Sales		$ 14,121	$ 13,680	$ 12,670
Equity Income		75	1,484	22
Total assets		9,158	10,778	10,261
Depreciation		298	285	295
Amortization		52	45	37
Capital Expenditures		227	260	326
Purchase accounting amortization		2	$ 5	3
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]			Restructuring and impairment costs
RUSSIAN FEDERATION
Segment Reporting Information [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		1
Asia
Segment Reporting Information [Line Items]
Loss on Contract Termination		7
Yanfeng
Segment Reporting Information [Line Items]
Equity method investment, realized gain (loss) on disposal			$ 1,181
Gain on completion of transaction				12
SJA
Segment Reporting Information [Line Items]
Equity method investment, realized gain (loss) on disposal	$ 33		33
YFAS
Segment Reporting Information [Line Items]
Gain on completion of transaction			5
YFAI
Segment Reporting Information [Line Items]
Purchase accounting amortization		2	5	3
Restructuring charges		1	1	8
(Gain) on sale of / impairment of nonconsolidated partially owned affiliates		10		231
Impact of tax reform				1
Reportable Segments | Americas
Segment Reporting Information [Line Items]
Net Sales		6,557	6,164	5,889
Equity Income		0	(1)	1
Total assets		3,073	2,888	3,019
Depreciation		130	121	128
Amortization		12	13	13
Capital Expenditures		104	131	138
Reportable Segments | EMEA
Segment Reporting Information [Line Items]
Net Sales		4,764	5,564	5,148
Equity Income		12	7	8
Total assets		2,166	2,473	2,658
Depreciation		116	132	129
Amortization		4	14	8
Capital Expenditures		73	104	164
Reportable Segments | Asia
Segment Reporting Information [Line Items]
Net Sales		2,926	2,123	1,822
Equity Income		76	265	256
Total assets		2,959	3,187	2,868
Depreciation		52	32	38
Amortization		36	18	16
Capital Expenditures		50	25	24
Reconciling items
Segment Reporting Information [Line Items]
Equity Income		(13)	1,213	(243)
Total assets		960	2,230	1,716
Depreciation		0	0	0
Amortization		0	0	0
Capital Expenditures		$ 0	$ 0	$ 0

Segment Information - Geographi

Segment Information - Geographic Information (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	$ 14,121	$ 13,680	$ 12,670
Long-lived assets	1,377	1,607
Eliminations
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	(126)	(171)	(189)
Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	643	662
Americas | Reportable Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	6,557	6,164	5,889
Americas | Geography Eliminations
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	(2,123)	(1,946)	(1,416)
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	460	467
United States | Reportable Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	5,876	5,500	4,983
Mexico
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	164	173
Mexico | Reportable Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	2,427	2,298	2,004
Other Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	19	22
Other Americas | Reportable Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	377	312	318
EMEA
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	496	676
EMEA | Reportable Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	4,764	5,564	5,148
EMEA | Geography Eliminations
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	(1,292)	(1,453)	(1,423)
Germany
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	126	180
Germany | Reportable Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	862	1,101	1,061
POLAND
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	118	145
Czech Republic
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	29	41
Czech Republic | Reportable Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	962	1,155	1,118
Other EMEA
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	223	310
Other EMEA | Reportable Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	4,232	4,761	4,392
Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	238	269
Asia | Reportable Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	2,926	2,123	1,822
Asia | Geography Eliminations
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	(24)	(24)	(27)
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	111	125
China | Reportable Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	1,374	642	517
Thailand
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	41	38
Thailand | Reportable Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	508	469	400
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	47	58
Japan | Reportable Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	264	331	332
Other Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	39	48
Other Asia | Reportable Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	$ 804	$ 705	$ 600

Nonconsolidated Partially-Own_3

Nonconsolidated Partially-Owned Affiliates - Narrative (Details) ¥ in Millions, $ in Millions			1 Months Ended		3 Months Ended	4 Months Ended	7 Months Ended
	Sep. 30, 2021	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2021 JPY (¥)
Supply Commitment | KEIPER
Schedule of Equity Method Investments [Line Items]
Reduction in cost of revenue					$ 14
Reduction in equity income					$ 17
SJA
Schedule of Equity Method Investments [Line Items]
Limited liability company or limited partnership, members or limited partners, ownership interest		50%
YFAS | Adient
Schedule of Equity Method Investments [Line Items]
Limited liability company or limited partnership, members or limited partners, ownership interest	49.99%
SJA
Schedule of Equity Method Investments [Line Items]
Proceeds from divestiture of interest in joint venture		$ 58
YFAS
Schedule of Equity Method Investments [Line Items]
Proceeds from divestiture of interest in joint venture			$ 652	$ 489		$ 1,141	$ 1,257	¥ 8,064

Nonconsolidated Partially-Own_4

Nonconsolidated Partially-Owned Affiliates - Partially-owned Affiliates (Details)	Sep. 30, 2022	Sep. 30, 2021
KEIPER Seating Mechanisms Co., Ltd. (KEIPER)
Schedule of Equity Method Investments [Line Items]
% ownership at September 30,	50%	50%
Changchun FAWAY Adient Automotive Systems Co. Ltd. (CFAA)
Schedule of Equity Method Investments [Line Items]
% ownership at September 30,	49%	49%

Nonconsolidated Partially-Own_5

Nonconsolidated Partially-Owned Affiliates - Income Statement (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Schedule of Equity Method Investments [Line Items]
Gross profit	$ 807	$ 826	$ 592
Equity method investment, nonconsolidated investee or group of investees
Schedule of Equity Method Investments [Line Items]
Net sales	4,039	8,809	9,538
Gross profit	374	1,008	1,111
Net income	189	733	591
Net income attributable to the entity	$ 187	$ 682	$ 563

Nonconsolidated Partially-Own_6

Nonconsolidated Partially-Owned Affiliates - Balance Sheet (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Schedule of Equity Method Investments [Line Items]
Current assets	$ 4,163	$ 5,086
Current liabilities	3,501	3,511
Noncurrent liabilities	3,237	4,309
Noncontrolling interests	302	342
Equity method investment, nonconsolidated investee or group of investees
Schedule of Equity Method Investments [Line Items]
Current assets	1,784	1,792
Noncurrent assets	826	874
Current liabilities	1,843	1,841
Noncurrent liabilities	159	145
Noncontrolling interests	$ 6	$ 0

Commitments and Contingencies (

Commitments and Contingencies (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Reserves for environmental liabilities	$ 6	$ 8

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Related Party Transactions [Abstract]
Net sales to related parties	$ 247	$ 273	$ 347
Purchases from related parties	434	558	$ 566
Accounts receivable due from related parties	34	30
Accounts payable due to related parties	$ 95	$ 41