ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Accumulated other comprehensive income [Roll Forward]
Stockholders' equity, beginning balance	$ 20,298
Stockholders' equity, ending balance	20,292	$ 26,379
Accumulated other comprehensive income (loss)
Accumulated other comprehensive income [Roll Forward]
Stockholders' equity, beginning balance	(821)	(868)
Stockholders' equity, ending balance	(828)	(1,340)
Foreign currency translation
Accumulated other comprehensive income [Roll Forward]
Stockholders' equity, beginning balance	(565)	(616)
Other comprehensive income (loss)/Gains deferred during the period, net of tax	(19)	(485)
Stockholders' equity, ending balance	(584)	(1,101)
Other comprehensive income (loss), tax	(3)	16
Pension and postretirement
Accumulated other comprehensive income [Roll Forward]
Stockholders' equity, beginning balance	(269)	(245)
Amortization of deferred actuarial losses into earnings, net of tax of $(1) and $(1), respectively	4	3
Stockholders' equity, ending balance	(265)	(242)
Other comprehensive income (loss), tax	(1)	(1)
Cash flow hedges
Accumulated other comprehensive income [Roll Forward]
Stockholders' equity, beginning balance	13	(7)
Other comprehensive income (loss)/Gains deferred during the period, net of tax	12	11
Reclassification of realized (gains) losses to sales and cost of sales, net of tax of $— and $2, respectively	(4)	(1)
Stockholders' equity, ending balance	21	3
Other comprehensive income (loss), tax	(4)	(3)
Reclassification of (gains) losses to sales and cost of sales, tax	$ 2	$ 0