OTHER FINANCIAL DATA - Accrued Expenses (Details) - USD ($) $ in Millions	Sep. 30, 2024	Sep. 30, 2023
Other Financial Data [Abstract]
Customer advances (contract liabilities)	$ 1,043	$ 861
Employee compensation	706	618
Operating lease liabilities (current)	158	144
Product warranty	$ 82	$ 84
Current lease liabilities (accrued expenses)[Extensible Enumeration]	Accrued expenses	Accrued expenses