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Other Income (Expense), Net Other Income (Expense), Net (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022
Other Income (Expense), Net |  |  |
Interest income | $ 42 | $ 34 | $ 15
External services | 17 | 15 | 16
Gain (Loss) on Investments | 23 | 13 | (17)
Miscellaneous | (11) | (1) | (7)
Other income (expense), net | $ 71 | $ 61 | $ 7

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