Spin-Off of Embecta Corp. (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from Discontinued Operations, Net of Tax	$ 144	$ 488	$ 522
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Revenue	538	1,117	1,043
Disposal Group, Including Discontinued Operation, Costs of Goods Sold	143	320	264
Disposal Group, Including Discontinued Operation, Selling, General and Administrative Expense	78	148	141
Disposal Group, Including Discontinued Operations, Research and Development Expense	32	59	57
Disposal Groups, Including Discontinued Operation, Acquisition Related Costs and Restructuring Charges	0	6	10
Disposal Group, Including Discontinued Operation, Other Operating Income (Expense), Net	95	35	0
Disposal Group, Including Discontinued Operation, Operating Expense	348	569	472
Disposal Group, Including Discontinued Operation, Operating Income (Loss)	190	549	571
Disposal Group, Including Discontinued Operation, Interest Expense	(4)	0	0
Disposal Group, Including Discontinued Operation, Other Nonoperating Income (Expense)	0	2	0
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	186	550	571
Discontinued Operation, Tax Effect of Discontinued Operation	42	62	50
Income from Discontinued Operations, Net of Tax	$ 144	$ 488	$ 522