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Note 17. Segment Reporting (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015
Segment Reporting Information [Line Items] |  |  |
Becoming Adient Costs NonCash | $ 30 |  |
Sales Revenue, Goods, Net | 16,213 | $ 16,790 | $ 20,023
Income (Loss) from Continuing Operations before Interest Expense, Interest Income, Income Taxes, Noncontrolling Interests, Net | 1,193 | 399 | 956
Becoming Adient Costs | 95 | 0 | 0
Separation Costs | 10 | 369 | 0
Restructuring Costs and Asset Impairment Charges | 46 | 332 | 182
Restructuring Related Charges | 37 | 14 | 16
Defined Benefit Plan, Amortization of Gains (Losses) | 45 | (110) | (6)
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain | 151 | 0 | 0
Gain (Loss) on Disposition of Business | 0 | 0 | 137
Proceeds from Divestiture of Businesses |  | 22 |
Other Income (Expense) Items | (16) | 79 | 19
Interest Income (Expense), Net | (132) | (22) | (12)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest | 1,061 | 377 | 944
Income (Loss) from Equity Method Investments | 522 | 344 | 280
Assets | 13,170 | 12,956 | 10,414
Depreciation | 337 | 327 | 329
Amortization of Intangible Assets | 21 | 17 | 18
Payments to Acquire Productive Assets | 577 | 437 | 478
Commercial Settlements |  | 13 |
Other Nonrecurring Expense | 12 |  |
Multi-employer Pension Credit |  | 24 | 19
Proceeds from Legal Settlements |  | 20 |
Seating Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Income (Loss) from Continuing Operations before Interest Expense, Interest Income, Income Taxes, Noncontrolling Interests, Net | 1,151 | 1,091 | 909
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain |  |  | (10)
Seating Segment [Domain] |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales Revenue, Goods, Net |  | 16,790 | 17,069
Income (Loss) from Equity Method Investments | 301 | 273 | 248
Assets | 12,061 | 11,917 | 9,353
Depreciation | 332 |  |
Amortization of Intangible Assets | 0 | 0 | 0
Payments to Acquire Productive Assets | 577 | 437 | 478
Interiors Segment [Domain] |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales Revenue, Goods, Net | 0 | 0 | 2,954
Income (Loss) from Equity Method Investments | 93 | 91 | 37
Assets | 1,109 | 1,039 | 1,006
Depreciation | 0 | 0 | 0
Amortization of Intangible Assets | 0 | 0 | 0
Payments to Acquire Productive Assets | 0 | 0 | 0
Subsegments Consolidation Items [Domain] |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales Revenue, Goods, Net | 0 | 0 | 0
Income (Loss) from Equity Method Investments | 128 | (20) | (5)
Assets | 0 | 0 | 55
Depreciation | 5 | 0 | 0
Amortization of Intangible Assets | 21 | 17 | 18
Payments to Acquire Productive Assets | 0 | 0 | 0
Interiors Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Income (Loss) from Continuing Operations before Interest Expense, Interest Income, Income Taxes, Noncontrolling Interests, Net | 93 | 91 | 118
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain |  |  | 127
Acquisition-related Costs [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Other Depreciation and Amortization | $ 43 | $ 37 | $ 23
UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Disclosure on Geographic Areas, Long-Lived Assets | 685 | 580 | 583
Disclosure on Geographic Areas, Description of Revenue from External Customers | 5798 | 6581 | 7850
Geographic Distribution, Foreign [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Disclosure on Geographic Areas, Long-Lived Assets | 287 | 273 | 234
Disclosure on Geographic Areas, Description of Revenue from External Customers | 2740 | 2558 | 3360
GERMANY |  |  |
Segment Reporting Information [Line Items] |  |  |
Disclosure on Geographic Areas, Long-Lived Assets | 380 | 360 | 375
Disclosure on Geographic Areas, Description of Revenue from External Customers | 1584 | 1901 | 2464
MEXICO |  |  |
Segment Reporting Information [Line Items] |  |  |
Disclosure on Geographic Areas, Long-Lived Assets | 277 | 250 | 225
Disclosure on Geographic Areas, Description of Revenue from External Customers | 1079 | 998 | 1299
European Union [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Disclosure on Geographic Areas, Long-Lived Assets | 873 | 732 | 722
Disclosure on Geographic Areas, Description of Revenue from External Customers | 5012 | 4752 | 5050
Futuris [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed | $ 3 |  |

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