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Note 13. NonConsolidated Partially-Owned Affiliates (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2017
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | $ 1,924 |  | $ 1,793
Equity Method Investment, Summarized Financial Information, Revenue | 4,663 | $ 4,324 |
Equity Method Investment, Summarized Financial Information, Gross Profit (Loss) | 566 | 539 |
Equity Method Investments Summarized Financial Information Operating Income (Loss) | 279 | 295 |
Equity Method Investments Summarized Financial Information Net Income (Loss) Including Noncontrolling Interests | 221 | 280 |
Equity Method Investment, Summarized Financial Information, Net Income (Loss) | $ 216 | 259 |
Restatement Adjustment [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity Method Investments Summarized Financial Information Operating Income (Loss) |  | 14 |
Equity Method Investments Summarized Financial Information Net Income (Loss) Including Noncontrolling Interests |  | 14 |
Equity Method Investment, Summarized Financial Information, Net Income (Loss) |  | $ 14 |

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