ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Accumulated other comprehensive income [Roll Forward]
Stockholders' equity, beginning balance			$ 27,509
Other comprehensive income (loss), net of tax	$ 192	$ (7)	(287)	$ 158
Stockholders' equity, ending balance	19,266	26,781	19,266	26,781
Accumulated other comprehensive income (loss)
Accumulated other comprehensive income [Roll Forward]
Stockholders' equity, beginning balance	(1,340)	(1,090)	(868)	(1,253)
Stockholders' equity, ending balance	(1,150)	(1,097)	(1,150)	(1,097)
Foreign currency translation
Accumulated other comprehensive income [Roll Forward]
Stockholders' equity, beginning balance	(1,101)	(840)	(616)	(1,012)
Other comprehensive income (loss), net of tax	184	(17)	(301)	155
Reclassification, net of tax	0	23	0	23
Stockholders' equity, ending balance	(914)	(834)	(914)	(834)
Other comprehensive income (loss), tax	17	(1)	1	12
Purchase of noncontrolling interest
Accumulated other comprehensive income [Roll Forward]
Other comprehensive income (loss), net of tax	3	0	3	0
Pension and postretirement
Accumulated other comprehensive income [Roll Forward]
Stockholders' equity, beginning balance	(242)	(259)	(245)	(247)
Other comprehensive income (loss), net of tax	3	(12)	6	(24)
Stockholders' equity, ending balance	(239)	(271)	(239)	(271)
Other comprehensive income (loss), tax	(1)	2	(2)	4
Cash flow hedges
Accumulated other comprehensive income [Roll Forward]
Stockholders' equity, beginning balance	3	9	(7)	6
Other comprehensive income (loss), net of tax	1	1	12	7
Reclassification, net of tax	(1)	(2)	(2)	(5)
Stockholders' equity, ending balance	3	8	3	8
Other comprehensive income (loss), tax	(1)	0	(4)	(2)
Reclassification of (gains) losses to sales and cost of sales, tax	$ 1	$ 1	$ 1	$ 1