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Other Operating Income, Net and Other Non-Operating Income (Expense), Net - Other Operating Income, Net (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022
Property, Plant and Equipment |  |  |
Finance charges | $ 16 | $ 17 | $ 18
Gains on sales of fixed assets, net | 22 | 61 | 33
Foreign currency transaction gains (losses) | 2 | 7 | (5)
Cylinder deposit income | 17 | 23 | 18
Interest and interest-related income | 11 | 6 | 1
Other, net | (6) | 18 | 14
Total other operating income, net | $ 62 | 132 | $ 79
Building |  |  |
Property, Plant and Equipment |  |  |
Gains on sales of fixed assets, net |  | $ 15 |

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