Adjusted Earnings Before Interest, Income Taxes, Depreciation and Amortization

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Depreciation, Net of Restructuring Related Depreciation

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Gain (Loss) On Deconsolidation

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Intangible Assets, Purchase Accounting Adjustments

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Other Income (Expense) Items

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Restructuring Related Charges - restructuring related charges that do not meet the definition of restructuring under ASC 420.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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For transactions that are recognized separately from the acquisition of assets and assumptions of liabilities in the business combination, such as related to pre-existing relationships with the acquiree, this element represents the disclosure of the amount of acquisition related costs which have been expensed.

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This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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Amount of income (loss) from continuing operations, nonoperating income (expense) and income (loss) from equity method investments, before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of interest income (expense).

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The net amount of operating interest income (expense).

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Amount of cost (reversal of cost) for pension benefits. Excludes other postretirement benefits.

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Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets. Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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

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Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement.

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Segment Information (Details) $ in Millions		3 Months Ended			6 Months Ended
Segment Information (Details) $ in Millions	Oct. 25, 2019 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2020 USD ($) segment	Mar. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| segment					3
Net sales		$ 3,511		$ 4,228	$ 7,447	$ 8,386
Other items		(6)		(2)	(8)	(3)
Restructuring and impairment costs		(52)		(113)	(54)	(144)
Purchase accounting amortization		(11)		(10)	(21)	(20)
Restructuring related charges		(7)		(14)	(12)	(23)
Loss on deconsolidation		0		0	(25)	0
Impairment of nonconsolidated partially owned affiliate		0		0	(216)	0
Depreciation		(72)		(72)	(147)	(137)
Stock based compensation		3		(2)	(1)	(8)
Earnings (loss) before interest and income taxes		66		(22)	24	32
Interest Income (Expense), Net		(50)		(40)	(98)	(75)
Other pension income (expense)		2		0	4	2
Income (loss) before income taxes		18		(62)	(70)	(41)
Fixed asset impairment charges				66
Loss (gain) on divestitures - net		0		0	25	0
Business divestitures		0		0	(25)	0
Non-cash impairment charges					0	66
Integration-related costs		6			7
Futuris
Segment Reporting Information [Line Items]
Integration-related costs				2		3
YFAI
Segment Reporting Information [Line Items]
Non-cash impairment charges		216	$ 216
Tax adjustments					1
RECARO
Segment Reporting Information [Line Items]
Business divestitures			$ (21)		(99)
Adient Aerospace
Segment Reporting Information [Line Items]
Loss on deconsolidation					4
Loss (gain) on divestitures - net					(4)
Asia \| RECARO
Segment Reporting Information [Line Items]
Business divestitures					0
EMEA \| RECARO
Segment Reporting Information [Line Items]
Business divestitures					(78)
Americas \| RECARO
Segment Reporting Information [Line Items]
Business divestitures					(21)
Americas \| Adient Aerospace
Segment Reporting Information [Line Items]
Loss on deconsolidation	$ 4
Loss (gain) on divestitures - net	$ (4)
Operating segments \| Asia
Segment Reporting Information [Line Items]
Net sales		444		599	1,016	1,249
Adjusted EBITDA		63		123	240	277
Operating segments \| EMEA
Segment Reporting Information [Line Items]
Net sales		1,488		1,778	3,052	3,418
Adjusted EBITDA		62		59	111	61
Operating segments \| Americas
Segment Reporting Information [Line Items]
Net sales		1,641		1,915	3,500	3,850
Adjusted EBITDA		106		34	200	77
Elimination
Segment Reporting Information [Line Items]
Net sales		(62)		(64)	(121)	(131)
Corporate-related costs
Segment Reporting Information [Line Items]
Other items		$ (20)		$ (25)	$ (43)	$ (48)