Nonconsolidated Partially-Owned Affiliates - Schedule of Operating Information of Nonconsolidated Partially-Owned Affiliates (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Schedule of Equity Method Investments [Line Items]
Gross profit	$ 237	$ 207	$ 714	$ 683
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule of Equity Method Investments [Line Items]
Net sales			2,644	2,863
Gross profit			241	274
Net income			123	139
Net income attributable to the entity			$ 121	$ 137