The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Goodwill and Other Intangibles - Additional Information (Details) $ in Millions		3 Months Ended		9 Months Ended
	Jul. 01, 2018 ReportableSegment	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) ReportableSegment ReportingUnit	Jun. 30, 2018 USD ($)
Finite Lived Intangible Assets [Line Items]
Number of reportable segments \| ReportableSegment	3			2
Number of remaining reporting units \| ReportingUnit				2
Finite-Lived Intangible Assets, Net [Abstract]
Amortization expense recognized on intangible assets		$ 22	$ 23	$ 65	$ 69
Expected future amortization expense [Abstract]
2019 (includes nine months actual and three months estimated)		86		86
2020		86		86
2021		85		85
2022		85		85
2023		$ 85		$ 85
Minimum [Member] \| Trademarks and Trade Names [Member]
Intangible Assets, Net [Abstract]
Useful life (in years)				3 years
Minimum [Member] \| Intellectual Property [Member]
Intangible Assets, Net [Abstract]
Useful life (in years)				5 years
Minimum [Member] \| Customer and supplier relationships [Member]
Intangible Assets, Net [Abstract]
Useful life (in years)				3 years
Maximum [Member] \| Trademarks and Trade Names [Member]
Intangible Assets, Net [Abstract]
Useful life (in years)				25 years
Maximum [Member] \| Intellectual Property [Member]
Intangible Assets, Net [Abstract]
Useful life (in years)				25 years
Maximum [Member] \| Customer and supplier relationships [Member]
Intangible Assets, Net [Abstract]
Useful life (in years)				24 years