OTHER FINANCIAL INFORMATION - Schedule of Depreciation and Amortization components (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Other Financial Information [Abstract]
Depreciation expense	$ 84	$ 83
Amortization of intangibles (includes $49 and $49 reported in Cost of Sales, respectively)	254	278
Amortization of capitalized software	21	22
Total	359	383
Amortization of intangibles in cost of sales	$ 49	$ 49