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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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Amount of realized and unrealized gain (loss) on investment.

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Amount of interest income (expense) classified as nonoperating.

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