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Note 1. Significant Accounting Policies Earnings per Share (Tables) | 12 Months Ended
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Sep. 30, 2017
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | The following table shows the computation of basic and diluted earnings per share:
|  | Year Ended September 30,
(in millions, except per share data) |  | 2017 |  | 2016 |  | 2015
Numerator: |  |  |  |  |  |
Net income (loss) attributable to Adient |  | $ | 877 |  |  | $ | (1,546 | ) |  | $ | 460 |
Denominator: |  |  |  |  |  |
Shares outstanding |  | 93.5 |  |  | 93.7 |  |  | 93.7 |
Effect of dilutive securities |  | 0.4 |  |  | — |  |  | 0.1 |
Diluted shares |  | 93.9 |  |  | 93.7 |  |  | 93.8 |
Earnings per share: |  |  |  |  |  |
Basic |  | $ | 9.38 |  |  | $ | (16.50 | ) |  | $ | 4.91 |
Diluted |  | $ | 9.34 |  |  | $ | (16.50 | ) |  | $ | 4.90 |
Potentially dilutive securities whose effect would have been antidilutive are excluded from the computation of diluted earnings per share. For periods prior to the separation, basic and diluted earnings per ordinary share are calculated assuming the number of Adient ordinary shares outstanding on October 31, 2016 had been outstanding at the beginning of each period presented.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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