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Note 5. Goodwill and Other Intangible Assets Goodwill (Tables) | 12 Months Ended
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Sep. 30, 2017
Goodwill [Line Items] |
Goodwill Disclosure [Text Block] | The changes in the carrying amount of goodwill in each of Adient's reporting segments is as follows:
(in millions) |  | September 30, 2016 |  | Business Acquisitions |  | Business Divestitures |  | Currency Translation and Other |  | September 30, 2017
Goodwill |  |  |  |  |  |  |  |  |  |
Seating |  | $ | 2,179 |  |  | $ | 284 |  |  | $ | — |  |  | $ | 52 |  |  | $ | 2,515 |
(in millions) |  | September 30, 2015 |  | Business Acquisitions |  | Business Divestitures |  | Currency Translation and Other |  | September 30, 2016
Goodwill |  |  |  |  |  |  |  |  |  |
Seating |  | $ | 2,160 |  |  | $ | — |  |  | $ | — |  |  | $ | 19 |  |  | $ | 2,179 |

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- Definition 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. + References No definition available. + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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Balance Type: | na
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