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Goodwill And Other Intangibles (Schedule Of Gross Carrying Amount And Accumulated Amortization Of Identifiable Intangible Assets By Major Class) (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Sep. 30, 2022
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Intangibles Other Than Goodwill [Line Items] |  |
Gross carrying amount | $ 10,111 | $ 9,671
Less: Accumulated amortization | 3,848 | 3,099
Net carrying amount | 6,263 | 6,572
Customer Relationships |  |
Intangibles Other Than Goodwill [Line Items] |  |
Gross carrying amount | 4,623 | 4,393
Less: Accumulated amortization | 1,270 | 957
Net carrying amount | 3,353 | 3,436
Intellectual Property |  |
Intangibles Other Than Goodwill [Line Items] |  |
Gross carrying amount | 4,118 | 3,961
Less: Accumulated amortization | 1,411 | 1,027
Net carrying amount | 2,707 | 2,934
Capitalized Software |  |
Intangibles Other Than Goodwill [Line Items] |  |
Gross carrying amount | 1,370 | 1,317
Less: Accumulated amortization | 1,167 | 1,115
Net carrying amount | $ 203 | $ 202

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