| Sep 30, 2017 | Sep 30, 2018 | Sep 30, 2019 | Sep 30, 2020 | Sep 30, 2021 | Sep 30, 2022 | Sep 30, 2023 | Sep 30, 2024 |
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| Net income (loss) attributable to Adient | 962 | -1,601 | -408 | -486 | 1,190 | -40 | 295 | 101 |
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| Income attributable to noncontrolling interests | 85 | 84 | 83 | 61 | 82 | 80 | 90 | 83 |
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| Net income (loss) | 962 | -1,601 | -408 | -486 | 1,190 | -40 | 295 | 101 |
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| Depreciation | 337 | 400 | 278 | 295 | 285 | 298 | 290 | 285 |
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| Amortization of intangibles | 21 | 47 | 40 | 37 | 45 | 52 | 50 | 47 |
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| Pension and postretirement benefit expense (benefit) | -41 | -36 | 53 | 23 | -16 | -2 | 38 | 27 |
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| Pension and postretirement contributions, net | - | -11 | 19 | 19 | 23 | 16 | 17 | 20 |
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| Equity in earnings of partially-owned affiliates, net of dividends received | 91 | 55 | 55 | -24 | -44 | -4 | 34 | 17 |
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| (Gain) on sale of / impairment of nonconsolidated partially owned affiliates | - | - | - | - | 1,214 | -10 | -6 | 1 |
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| Premium paid on repurchase of debt | - | - | - | - | - | 38 | 7 | - |
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| Retrospective recoveries of Brazil indirect tax credits | - | - | - | - | - | 29 | - | - |
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| Derivative loss on the 2021 Yanfeng Transaction | - | - | - | - | - | -3 | - | - |
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| Deferred income taxes | -52 | 344 | 288 | -33 | 40 | 5 | -124 | -1 |
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| Non-cash restructuring and impairment charges | - | 1,134 | 78 | 53 | 11 | 14 | - | 9 |
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| Equity-based compensation | 45 | 47 | 20 | 15 | 36 | 29 | 34 | 31 |
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| Other | 6 | -11 | -23 | -24 | -21 | -17 | 4 | -7 |
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| Receivables | -30 | -73 | -131 | -190 | -483 | 576 | -16 | -12 |
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| Inventories | 10 | 106 | -8 | -78 | 263 | 62 | -126 | -93 |
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| Other assets | -13 | -46 | -150 | -140 | -82 | -32 | 26 | 57 |
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| Accounts payable and accrued liabilities | -113 | 143 | -191 | -251 | -388 | 542 | 34 | 90 |
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| Accrued income taxes | 19 | -2 | 20 | -8 | -5 | 12 | 29 | -63 |
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| Cash provided (used) by operating activities | 746 | 679 | 308 | 246 | 260 | 274 | 667 | 543 |
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| Capital expenditures | 577 | 536 | 468 | 326 | 260 | 227 | 252 | 266 |
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| Sale of property, plant and equipment | 44 | 53 | 68 | 15 | 30 | 20 | 26 | 15 |
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| Acquisition of businesses, net of cash acquired | 247 | - | - | - | 211 | 19 | 6 | - |
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| Business divestitures | - | - | - | - | - | - | - | -2 |
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| Business divestitures | - | - | - | 499 | 785 | 740 | 5 | - |
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| Other | 4 | - | -4 | -5 | - | - | 2 | - |
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| Cash provided (used) by investing activities | -795 | -487 | -383 | 166 | 347 | 484 | -229 | -253 |
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| Increase (decrease) in short-term debt | -7 | -31 | 17 | -16 | -5 | -14 | -1 | -1 |
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| Increase (decrease) in long-term debt | - | - | - | - | - | - | 1,002 | - |
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| Repayment of long-term debt | 302 | 2 | 1,204 | 108 | 895 | 987 | 1,104 | 137 |
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| Debt financing costs | - | - | 47 | 10 | 8 | 1 | 23 | 5 |
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| Share repurchases | 40 | - | - | - | - | - | 65 | 275 |
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| Cash paid to acquire a noncontrolling interest | - | - | - | - | - | -153 | - | - |
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| Dividends paid to noncontrolling interests | 79 | 74 | 62 | 71 | 69 | 106 | 67 | 72 |
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| Other | 3 | -3 | -3 | -2 | -7 | -12 | -13 | -12 |
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| Cash provided (used) by financing activities | 627 | -213 | 303 | 393 | -770 | -1,273 | -271 | -502 |
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| Effect of exchange rate changes on cash and cash equivalents | - | - | - | -34 | 8 | -59 | -4 | 47 |
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| Increase (decrease) in cash and cash equivalents | - | - | - | 768 | -171 | -574 | 163 | -165 |
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