Goodwill and Other Intangible Assets - Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Sep. 30, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 790	$ 785
Accumulated Amortization	(241)	(230)
Net	549	555
Patented technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	86	86
Accumulated Amortization	(20)	(19)
Net	66	67
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	655	649
Accumulated Amortization	(188)	(178)
Net	467	471
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	25	26
Accumulated Amortization	(21)	(21)
Net	4	5
Miscellaneous
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	24	24
Accumulated Amortization	(12)	(12)
Net	$ 12	$ 12

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount before accumulated amortization of intangible assets, excluding goodwill.

+ References

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph ((a)(1),(b))
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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