Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Revenues	$ 20,248	$ 17,117	$ 17,290
Cost of products sold	10,821	9,540	9,002
Selling and administrative expense	4,867	4,325	4,332
Research and development expense	1,339	1,096	1,062
Acquisitions and other restructurings	185	309	480
Other operating expense, net	238	363	654
Total Operating Costs and Expenses	17,449	15,633	15,530
Operating Income	2,799	1,484	1,760
Interest expense	(469)	(528)	(639)
Interest income	9	7	12
Other (expense) income, net	(97)	23	43
Income Before Income Taxes	2,242	985	1,176
Income tax provision (benefit)	150	111	(57)
Net Income	2,092	874	1,233
Preferred stock dividends	(90)	(107)	(152)
Net income applicable to common shareholders	$ 2,002	$ 767	$ 1,082
Earnings Per Share, Basic [Abstract]
Earnings Per Share, Basic	$ 6.92	$ 2.75	$ 4.01
Earnings Per Share, Diluted [Abstract]
Diluted Earnings per Share (USD per share)	$ 6.85	$ 2.71	$ 3.94