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v3.19.1

Segment Information - (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2019 USD ($) segment | Mar. 31, 2018 USD ($) | Mar. 31, 2019 USD ($) segment | Mar. 31, 2018 USD ($)
Segment Reporting Information [Line Items] |  |  |  |
Number of reportable segments | segment | 3 |  | 3 |
Becoming Adient Costs - non cash |  | $ 5 |  | $ 11
Stock base compensation excluded | $ 2 | 12 | $ 8 | 22
Depreciation expense excluded | 72 | 101 | 137 | 197
US tax reform impact at YFAI | 64 | (28) | 74 | 237
Prior period adjustments |  | 8 |  |
Other pension income | 0 | (7) | (2) | (8)
SS&M |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Non-recurring consulting fee |  | 7 |  |
Costs Associated With Becoming An Independent Company |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Stock base compensation excluded |  |  |  | 8
Restructuring Related Charges |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation expense excluded |  |  |  | 4
Futuris |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Futuris integration cost | $ 2 | 7 | $ 3 | 6
Corporate Joint Venture | YFAI |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
US tax reform impact at YFAI |  |  |  | 8
Accounting Standards Update 2017-07 |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Other pension income |  | $ 6 |  | $ 6

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