FINANCIAL INSTRUMENTS - Schedule Of Derivative Instruments (Details) - USD ($) $ in Millions	3 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Derivative Instruments, Gain (Loss) [Line Items]
Total gains included in earnings	$ (3)	$ (50)
Total gains included in other comprehensive income	28	84
Foreign Exchange Contract \| Cash Flow Hedging \| Sales
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) included in earnings	1	1
Gains (losses) included in other comprehensive income	4	11
Foreign Exchange Contract \| Cash Flow Hedging \| Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) included in earnings	5	0
Gains (losses) included in other comprehensive income	12	3
Foreign Exchange Contract \| Cash Flow Hedging \| Other deductions, net
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) included in earnings	(9)	(51)
Foreign Exchange Contract \| Net Investment Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Net investment hedges included in earnings	0
Net investment hedges included in other comprehensive income	$ 12	$ 70

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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