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Document and Entity Information Document
 9 Months Ended
Jun. 30, 2017
shares
Entity Information [Line Items]  
Entity Registrant Name Adient plc
Entity Central Index Key 0001670541
Current Fiscal Year End Date --09-30
Entity Filer Category Large Accelerated Filer
Document Type 10-Q
Document Period End Date Jun. 30, 2017
Document Fiscal Year Focus 2017
Document Fiscal Period Focus Q3
Amendment Flag false
Entity Common Stock, Shares Outstanding 93,126,722