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Derivatives And Hedging Activities Cash Flow Hedges (Details) lb in Thousands, € in Millions, ¥ in Millions, zł in Millions, $ in Millions, $ in Millions | 12 Months Ended |
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Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) lb | Sep. 30, 2022 MXN ($) lb | Sep. 30, 2022 CNY (¥) lb | Sep. 30, 2022 EUR (€) lb | Sep. 30, 2022 PLN (zł) lb
Derivative [Line Items] |  |  |  |  |  |  |
Net derivative gains (losses) included in accumulated other comprehensive income, before tax |  |  | $ (54) |  |  |  |
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax |  |  | $ (54) |  |  |  |
Cash Flow Hedging | Copper |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, Nonmonetary Notional Amount | lb |  |  | 118,494 | 118,494 | 118,494 | 118,494 | 118,494
Derivative, Notional Amount |  |  | $ 415 |  |  |  |
Cash Flow Hedging | Foreign currency derivatives | Mexican Peso |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, Notional Amount |  |  | 720 | $ 14,478 |  |  |
Cash Flow Hedging | Foreign currency derivatives | Chinese Yuan Renminbi |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, Notional Amount |  |  | 360 |  | ¥ 2,574 |  |
Cash Flow Hedging | Foreign currency derivatives | Polish Zloty |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, Notional Amount |  |  | 135 |  |  |  | zł 664
Cash Flow Hedging | Foreign currency derivatives | Euro Member Countries, Euro |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, Notional Amount |  |  | 120 |  |  | € 122 |
Cash Flow Hedging | Foreign currency derivatives | Hungary, Forint |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, Notional Amount |  |  | $ 55 |  |  |  | zł 23,895
Forecast [Member] |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative Instruments, (Gain) Loss Reclassified from Accumulated OCI into Income, Effective Portion | $ 13 | $ 41 |  |  |  |  |

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