Goodwill And Other Intangibles (Schedule Of Gross Carrying Amount And Accumulated Amortization Of Identifiable Intangible Assets By Major Class) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Intangibles Other Than Goodwill [Line Items]
Gross carrying amount	$ 10,141	$ 5,911
Less: Accumulated amortization	3,417	3,034
Net carrying amount	6,724	2,877
Amortization of intangible assets	563	470	$ 369
Future amortization expense, 2023	778
Future amortization expense, 2024	745
Future amortization expense, 2025	672
Future amortization expense, 2026	565
Future amortization expense, 2027	546
Customer Relationships [Member]
Intangibles Other Than Goodwill [Line Items]
Gross carrying amount	4,563	2,391
Less: Accumulated amortization	1,056	896
Net carrying amount	3,507	1,495
Intellectual Property [Member]
Intangibles Other Than Goodwill [Line Items]
Gross carrying amount	4,121	2,062
Less: Accumulated amortization	1,123	923
Net carrying amount	2,998	1,139
Capitalized Software [Member]
Intangibles Other Than Goodwill [Line Items]
Gross carrying amount	1,457	1,458
Less: Accumulated amortization	1,238	1,215
Net carrying amount	$ 219	$ 243