Property, Plant and Equipment (Details) - USD ($) $ in Millions	Sep. 30, 2024	Sep. 30, 2023
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 4,514	$ 4,319
Less: accumulated depreciation	(3,104)	(2,937)
Property, plant and equipment - net	1,410	1,382
Buildings and improvements
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	1,031	990
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	3,245	3,097
Construction in progress
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	152	148
Land
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 86	$ 84