Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
Property, Plant and Equipment [Line Items]
Gross Property, Plant and Equipment	$ 783	$ 686
Less: Accumulated depreciation	(419)	(355)
Net Property, Plant and Equipment	364	331
Land
Property, Plant and Equipment [Line Items]
Gross Property, Plant and Equipment	12	12
Buildings and improvements
Property, Plant and Equipment [Line Items]
Gross Property, Plant and Equipment	185	179
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Gross Property, Plant and Equipment	36	31
Computer hardware and software
Property, Plant and Equipment [Line Items]
Gross Property, Plant and Equipment	427	371
Construction in progress
Property, Plant and Equipment [Line Items]
Gross Property, Plant and Equipment	93	64
Machinery and equipment
Property, Plant and Equipment [Line Items]
Gross Property, Plant and Equipment	$ 30	$ 29

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business 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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