Debt and Financing Arrangements - New Debt Arrangements (Details) - Subsequent Event	May 06, 2019 USD ($)
Adient US LLC | Line of Credit | Revolving credit facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 1,250,000,000
Days prior to the maturity date	91 days
Accordion feature to expand borrowing capacity	$ 250,000,000
Adient US LLC | Line of Credit | Letter of Credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity	150,000,000
Adient US LLC | Senior Notes
Line of Credit Facility [Line Items]
Face amount of debt	$ 800,000,000
Interest rate (as percent)	7.00%
Adient US and Adient Global Holdings S.à r.l. | Line of Credit | Term Loan
Line of Credit Facility [Line Items]
Term of loan	5 years
Face amount of debt	$ 800,000,000
Repayment rate of principal per annum (as percent)	1.00%
Pro forma first lien secured net leverage ratio covenant	1.75
North American Subfacility | Adient US LLC | Line of Credit | Revolving credit facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 950,000,000
European Subfacility | Adient US LLC | Line of Credit | Revolving credit facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 300,000,000
Minimum | Adient US LLC | Line of Credit | Revolving credit facility
Line of Credit Facility [Line Items]
Commitment fee (as percent)	0.25%
Maximum | Adient US LLC | Line of Credit | Revolving credit facility
Line of Credit Facility [Line Items]
Commitment fee (as percent)	0.375%
Maximum | Adient US and Adient Global Holdings S.à r.l. | Line of Credit | Term Loan
Line of Credit Facility [Line Items]
Aggregate amount of incremental term loans	$ 750,000,000
Eurodollar | Adient US and Adient Global Holdings S.à r.l. | Line of Credit | Term Loan
Line of Credit Facility [Line Items]
Effective interest rate	4.25%
Step down in basis spread on variable rate	0.25%
Eurodollar | Minimum | Adient US LLC | Line of Credit | Revolving credit facility
Line of Credit Facility [Line Items]
Basis spread (as percent)	1.50%
Eurodollar | Maximum | Adient US LLC | Line of Credit | Revolving credit facility
Line of Credit Facility [Line Items]
Basis spread (as percent)	2.00%