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Goodwill and Other Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Sep. 30, 2023
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Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 661 | $ 670
Accumulated Amortization | (260) | (262)
Net | 401 | 408
Patented technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 80 | 79
Accumulated Amortization | (34) | (32)
Net | 46 | 47
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 556 | 550
Accumulated Amortization | (214) | (201)
Net | 342 | 349
Trademarks |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 0 | 17
Accumulated Amortization | 0 | (17)
Net | 0 | 0
Miscellaneous |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 25 | 24
Accumulated Amortization | (12) | (12)
Net | $ 13 | $ 12

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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