EBP 003 EBP 003 [Member] EBP 003 EBP, Master Trust [Abstract] Statistical Measurement [Domain] Statistical Measurement [Domain] Party-in-Interest Transactions EBP, Related Party and Party-in-Interest Transactions [Text Block] Interest on notes receivable from participants EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Document Information [Line Items] Document Information [Line Items] Schedule of Master Trust Net Assets EBP, Master Trust [Table Text Block] Adient Ordinary Shares EBP, Employer, Common Stock Fund [Member] Maximum borrowing amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Investment incremental percentage EBP, Participant Accounts, Investment Incremental Percentage EBP, Participant Accounts, Investment Incremental Percentage EBP, Nonconsolidated, Master Trust EBP, Nonconsolidated, Master Trust [Member] EBP, Description of Plan and Accounting Change [Abstract] Investment Type [Axis] Investment Type [Axis] Participant rollovers EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover Maximum borrowing amount, percentage of total EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Income Tax Status EBP, Tax Status [Text Block] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Domain] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Domain] Dividend, interest and other income EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment EBP, Description of Plan [Line Items] EBP, Description of Plan [Line Items] EBP, Nonconsolidated, Plan Interest in Master Trust EBP, Nonconsolidated, Plan Interest in Master Trust [Member] Master Trust EBP, Master Trust [Text Block] EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] Current value EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Per Form 5500 EBP, Form 5500 Caption, Net Assets Fair Value Measurements EBP, Investment, Fair Value and NAV [Text Block] EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table] Total additions EBP, Change in Net Asset Available for Benefit, Increase from Contribution Plans' interest in Adient US LLC Defined Contribution Master Trust for Employee Savings Plans (Note 3) EBP, Investment, Plan Interest in Master Trust, Fair and Contract Value Per Form 5500 EBP, Form 5500 Caption, Net Income (Loss) Minimum borrowing amount EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Table] Distributions and withdrawals EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Employer contributions EBP, Employer Contribution, Receivable Total Investments at Fair Value EBP, Investment, Fair Value Participants EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Axis] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Axis] Benefit Payments EBP, Payment to Participant [Policy Text Block] Master Trust EBP, Master Trust [Policy Text Block] Net assets available for benefits Net assets available for benefits, beginning of year Net assets available for benefits, end of year Per financial statements EBP, Net Asset Available for Benefit EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] EBP, Accounting Policy [Line Items] EBP, Accounting Policy [Line Items] Minimum service period EBP, Employer Contribution Minimum Service Period EBP, Employer Contribution Minimum Service Period EBP, Reconciliation of Financial Statement to Form 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Table Text Block] Maximum number of loans outstanding per participant EBP, Note Receivable From Participant, Maximum Number Of Loans Outstanding EBP, Note Receivable From Participant, Maximum Number Of Loans Outstanding Fixed Income Fund Fixed Income Funds [Member] Total Master Trust Investments at Fair Value EBP, Investment, Plan Interest in Master Trust, Fair Value Minimum vesting age EBP, Employer Contribution Minimum Vesting Age EBP, Employer Contribution Minimum Vesting Age EBP, Reconciliation of Financial Statement to Form 5500 [Table] EBP, Reconciliation of Financial Statement to Form 5500 [Table] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] EBP, Tax Status [Abstract] Net increases Per financial statements EBP, Change in Net Asset Available for Benefit, Increase (Decrease) Cover [Abstract] Maximum Maximum [Member] Employer EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash Assets EBP, Asset [Abstract] Maximum annual compensation, percentage EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage Minimum Minimum [Member] EBP, Schedule of Asset Held for Investment [Abstract] EBP, Master Trust [Table] EBP, Master Trust [Table] Reconciliation to Form 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Text Block] Entity [Domain] Entity [Domain] EBP 001 ADNT EBP 001 ADNT [Member] EBP 001 ADNT EBP, Investment, Fair Value and NAV [Abstract] Employer contribution, matching percentage EBP, Employer Contribution, Matching Percentage Basis of Presentation EBP, Basis of Accounting [Policy Text Block] Risks and Uncertainties EBP, Risk and Uncertainty [Policy Text Block] EBP, Tax Status [Line Items] EBP, Tax Status [Line Items] Participant-directed investments Investments - Fair Value: EBP, Investment, Fair Value [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] Mutual Funds Mutual Fund [Member] Transfer of Assets EBP, Transfer Of Assets [Policy Text Block] EBP, Transfer Of Assets EBP, Description of Plan [Table] EBP, Description of Plan [Table] EBP, Reconciliation of Financial Statement to Form 5500 [Abstract] Investment Valuation and Investment Contracts EBP, Investment [Policy Text Block] Amendment Flag Amendment Flag Administrative expenses EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Common/Collective Trust Funds Common Collective Trust [Member] Total Investments at NAV Fair Value Measured at Net Asset Value Per Share [Member] EBP, Investment, Fair Value and NAV EBP, Investment, Fair Value and NAV [Table Text Block] Total deductions EBP, Change in Net Asset Available for Benefit, Decrease Plan Termination EBP, Plan Termination [Text Block] EBP, Statement of Change in Net Asset Available for Benefit [Abstract] EBP, Related Party and Party-in-Interest Transactions [Abstract] Other Common Stock EBP, Nonemployer, Common Stock [Member] EBP, Related Party and Party-in-Interest Transactions [Line Items] EBP, Related Party and Party-in-Interest Transactions [Line Items] EBP, Statement of Net Asset Available for Benefit [Abstract] Total Investments at Contract Value EBP, Investment, Contract Value Description of the Plans EBP, Description of Plan [Text Block] Summary of Significant Accounting Policies EBP, Summary of Accounting Policy [Text Block] EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Line Items] Entity Central Index Key Entity Central Index Key Interest rate EBP, Asset Held for Investment, Participant Loan, Interest Rate Legal Entity [Axis] Legal Entity [Axis] Entity tax identification number Entity Tax Identification Number Net investment income EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment Mutual and Stock Funds EBP, Mutual Fund And Stock Fund [Member] EBP, Mutual Fund And Stock Fund EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] Shares sold EBP, Investment Sold, Plan Interest in Master Trust, Selling Price Plan number EBP, Plan Number Contributions: EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] Plan's interest in Adient US LLC Defined Contribution Master Trust for Employee Savings Plans investment income (Note 3) EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Change in Plan Interest in Master Trust Document Type Document Type EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Investment, Fair Value and NAV [Line Items] EBP, Investment, Fair Value and NAV [Line Items] EBP, Form 5500 Caption, Net Assets [Abstract] EBP, Form 5500 Caption, Net Assets [Abstract] Maximum borrowing term EBP, Note Receivable From Participant, Maximum Borrowing Term EBP, Note Receivable From Participant, Maximum Borrowing Term Use of Estimates EBP, Use of Estimate [Policy Text Block] EBP Plans EBP Plans [Member] EBP Plans Forfeiture, consecutive years of no reemployment EBP, Forfeited, Consecutive Years Of No Reemployment EBP, Forfeited, Consecutive Years Of No Reemployment Maximum vesting age EBP, Employer Contribution Maximum Vesting Age EBP, Employer Contribution Maximum Vesting Age Automatic employer matching contribution, percentage EBP, Participant Contribution, Automatic, Employer Contribution Matched, Percentage EBP, Participant Contribution, Automatic, Employer Contribution Matched, Percentage Fixed rate contribution, percentage EBP, Employer Contribution, Annual Fixed Rate Contribution, Percentage EBP, Employer Contribution, Annual Fixed Rate Contribution, Percentage EBP, Form 5500 Caption, Net Income (Loss) [Abstract] EBP, Form 5500 Caption, Net Income (Loss) [Abstract] Statistical Measurement [Axis] Statistical Measurement [Axis] Deductions EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] EBP, Master Trust [Line Items] EBP, Master Trust [Line Items] Notes receivable from participants EBP, Note Receivable from Participant Level 2 Fair Value, Inputs, Level 2 [Member] Schedule H, Line 4i – Schedule of Assets (Held At End of Year) EBP, Schedule of Asset Held for Investment [Table Text Block] Additions EBP, Change in Net Asset Available for Benefit, Increase [Abstract] EBP 001 AVZR EBP 001 AVZR [Member] EBP 001 AVZR Add: Synthetic GIC valuation difference EBP, Reconciliation to Form 5500, Change in Net Asset Available for Benefit, Increase (Decrease) from Contract Value to Current Value Net realized and unrealized gains EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment Investments - Contract Value: EBP, Investment, Contract Value [Abstract] EBP, Accounting Policy [Table] EBP, Accounting Policy [Table] EBP 002 EBP 002 [Member] EBP 002 Investments [Domain] Investments [Domain] Document Information [Table] Document Information [Table] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] Vesting service period EBP, Employer Contribution Vesting Service Period EBP, Employer Contribution Vesting Service Period Less: Synthetic GIC valuation difference EBP, Reconciliation to Form 5500, Net Asset Available for Benefit, Contract Value to Current Value Adjustment Level 1 Fair Value, Inputs, Level 1 [Member] Entity Registrant Name Entity Registrant Name EBP, Tax Status [Table] EBP, Tax Status [Table] Interest Bearing Cash EBP, Employer, Interest Bearing Cash [Member] EBP, Employer, Interest Bearing Cash Receivables EBP, Receivable [Abstract] Total investments at fair value Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Total receivables EBP, Receivable Participant compensation matched, percentage EBP, Employer Contribution, Participant Compensation Matched, Percentage Shares purchased EBP, Investment Acquired, Plan Interest in Master Trust, Purchase Price