Nonconsolidated Partially-Owned Affiliates - Schedule of Operating Information of Nonconsolidated Partially-Owned Affiliates (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023
Schedule of Equity Method Investments [Line Items]
Investments in partially-owned affiliates	$ 330		$ 330		$ 303
Gross profit	$ 230	$ 250	476	$ 481
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule of Equity Method Investments [Line Items]
Net sales			1,938	1,794
Gross profit			204	164
Net income			89	68
Net income attributable to the entity			$ 88	$ 67