Income Taxes (Schedule Of Pretax Earnings) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
United States	$ 1,491	$ 1,360	$ 1,771
Non-U.S.	1,421	975	1,088
Earnings before income taxes	$ 2,912	$ 2,335	$ 2,859