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Other Income (Expense), Net (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Other Income (Expense), Net |  |  |  |
External services | $ 4 | $ 5 | $ 12 | $ 11
Interest income | 10 | 9 | 30 | 25
Gains (losses) on investments | 2 | 5 | 16 | 15
Other income (expense), net | 14 | 20 | 55 | 57
Miscellaneous | $ (2) | $ (1) | $ (3) | $ (6)

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