OTHER FINANCIAL INFORMATION - Schedule of Property, Plant and Equipment, net (Details) - USD ($) $ in Millions	Dec. 31, 2025	Sep. 30, 2025
Other Financial Information [Abstract]
Property, plant and equipment, at cost	$ 6,461	$ 6,408
Less: Accumulated depreciation	3,594	3,537
Total	$ 2,867	$ 2,871

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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