Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Revenues	$ 17,117	$ 17,290	$ 15,983
Cost of products sold	9,540	9,002	8,714
Selling and administrative expense	4,325	4,332	4,016
Research and development expense	1,096	1,062	1,004
Acquisitions and other restructurings	309	480	740
Other operating expense, net	363	654	0
Total Operating Costs and Expenses	15,633	15,530	14,474
Operating Income	1,484	1,760	1,509
Interest expense	(528)	(639)	(706)
Interest income	7	12	65
Other income, net	23	43	305
Income Before Income Taxes	985	1,176	1,173
Income tax provision (benefit)	111	(57)	862
Net Income	874	1,233	311
Preferred stock dividends	(107)	(152)	(152)
Net income applicable to common shareholders	$ 767	$ 1,082	$ 159
Earnings Per Share, Basic [Abstract]
Earnings Per Share, Basic	$ 2.75	$ 4.01	$ 0.62
Earnings Per Share, Diluted [Abstract]
Diluted Earnings per Share (USD per share)	$ 2.71	$ 3.94	$ 0.60

Acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; business integration costs, systems integration and conversion costs, and severance and other employee-related costs; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. Additionally includes the amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

No definition available.