ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Accumulated other comprehensive income [Roll Forward]
Stockholders' equity, beginning balance			$ 26,598
Other comprehensive income (loss), net of tax	$ (7)	$ 106	158	$ 341
Stockholders' equity, ending balance	26,781	17,347	26,781	17,347
Accumulated other comprehensive income (loss)
Accumulated other comprehensive income [Roll Forward]
Stockholders' equity, beginning balance	(1,090)	(1,255)	(1,253)	(1,485)
Stockholders' equity, ending balance	(1,097)	(1,148)	(1,097)	(1,148)
Foreign currency translation
Accumulated other comprehensive income [Roll Forward]
Stockholders' equity, beginning balance	(840)	(1,029)	(1,012)	(1,265)
Other comprehensive income (loss), net of tax	(17)	111	155	347
Reclassification, net of tax	23	0	23	0
Stockholders' equity, ending balance	(834)	(918)	(834)	(918)
Other comprehensive income (loss), tax	(1)	4	12	32
Pension and postretirement
Accumulated other comprehensive income [Roll Forward]
Stockholders' equity, beginning balance	(259)	(238)	(247)	(222)
Other comprehensive income (loss), net of tax	(12)	(17)	(24)	(33)
Stockholders' equity, ending balance	(271)	(255)	(271)	(255)
Other comprehensive income (loss), tax	2	3	4	7
Cash flow hedges
Accumulated other comprehensive income [Roll Forward]
Stockholders' equity, beginning balance	9	12	6	2
Other comprehensive income (loss), net of tax	1	18	7	27
Reclassification, net of tax	(2)	(5)	(5)	(4)
Stockholders' equity, ending balance	8	25	8	25
Other comprehensive income (loss), tax	0	(6)	(2)	(9)
Reclassification of (gains) losses to sales and cost of sales, tax	$ 1	$ 2	$ 1	$ 2