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Cover
 3 Months Ended
Dec. 31, 2023
shares
Cover [Abstract]  
Document Type 10-Q
Document Quarterly Report true
Document Period End Date Dec. 31, 2023
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
Entity Address, Address Line Two North Wall Quay
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 Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Large Accelerated Filer
Entity Small Business false
Entity Emerging Growth Company false
Entity Shell Company false
Entity Common Stock, Shares Outstanding 91,245,859
Entity Central Index Key 0001670541
Current Fiscal Year End Date --09-30
Document Fiscal Year Focus 2024
Document Fiscal Period Focus Q1
Amendment Flag false