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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, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Property, Plant and Equipment |  |  |
Finance charges | $ 17 | $ 18 | $ 17
Gains on sales of fixed assets, net | 61 | 33 | 11
Gain on early derivative termination | 0 | 0 | 5
Foreign currency transaction gains (losses) | 7 | (5) | 0
Cylinder deposit income | 23 | 18 | 9
Interest and interest-related income | 6 | 1 | 0
Other, net | 18 | 14 | (9)
Total other operating income, net | 132 | $ 79 | $ 33
Building |  |  |
Property, Plant and Equipment |  |  |
Gains on sales of fixed assets, net | $ 15 |  |

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