Other Financial Data (Other Liabilities) (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Operating lease liabilities (noncurrent)	$ 348	$ 413
Total	$ 3,320	$ 2,753
Noncurrent lease liabilities (other liabilities) [Extensible Enumeration]	Total	Total
Other Liabilities [Member]
Deferred income tax	$ 1,720	$ 711
Pension and postretirement liabilities	467	676
Asbestos litigation	223	256
Other	562	697
Total	$ 3,320	$ 2,753