Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2026	Sep. 30, 2025
Definite-lived intangible assets
Gross Carrying Amount	$ 4,180	$ 4,133
Accumulated Amortization	(2,661)	(2,497)
Net	1,519	1,636
Indefinite-lived intangible assets
Gross Carrying Amount	6,145	6,110
Net	3,484	3,613
Trademarks/trade names
Definite-lived intangible assets
Accumulated Amortization	0	0
Indefinite-lived intangible assets
Gross Carrying Amount	1,965	1,977
Technology
Definite-lived intangible assets
Gross Carrying Amount	1,202	1,197
Accumulated Amortization	(763)	(714)
Net	439	483
Customer relationships
Definite-lived intangible assets
Gross Carrying Amount	2,018	2,026
Accumulated Amortization	(1,350)	(1,272)
Net	668	754
Miscellaneous
Definite-lived intangible assets
Gross Carrying Amount	960	910
Accumulated Amortization	(548)	(511)
Net	$ 412	$ 399

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

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