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Goodwill and Other Intangible Assets - Schedule of Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Nov. 30, 2023
Goodwill [Roll Forward] |  |
Beginning balance | $ 2,094 |
Business divestiture | (5) |
Currency translation and other | 10 |
Ending balance | 2,099 |
Disposed of By Sale | Adient (Langfang) Seating Co., Ltd |  |
Goodwill [Roll Forward] |  |
Subsidiary, ownership percentage disposed |  | 51.00%
Adjusted EBITDA |  |
Goodwill [Roll Forward] |  |
Beginning balance | 609 |
Business divestiture | 0 |
Currency translation and other | 0 |
Ending balance | 609 |
EMEA |  |
Goodwill [Roll Forward] |  |
Beginning balance | 317 |
Business divestiture | 0 |
Currency translation and other | 9 |
Ending balance | 326 |
Asia |  |
Goodwill [Roll Forward] |  |
Beginning balance | 1,168 |
Business divestiture | (5) |
Currency translation and other | 1 |
Ending balance | $ 1,164 |

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