SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Millions	Sep. 30, 2025	Sep. 30, 2024
Property, Plant and Equipment [Line Items]
Land	$ 273	$ 278
Buildings	2,127	2,048
Machinery and equipment	3,694	3,538
Construction in progress	314	321
Property, plant and equipment, at cost	6,408	6,185
Less: Accumulated depreciation	3,537	3,378
Property, plant and equipment, net	$ 2,871	$ 2,807
Minimum | Building
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	30 years
Minimum | Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	8 years
Maximum | Building
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	40 years
Maximum | Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	12 years