Segment Data - Financial Information for Company's Segments (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Acquisition-related integration and restructuring expense	$ (313)	$ (192)	$ (179)
Income from Continuing Operations Before Income Taxes	1,662	1,783	1,692
Total Capital Expenditures	874	973	1,194
Total Depreciation and Amortization	2,288	2,229	2,230
Operating Segments
Segment Reporting Information [Line Items]
Income from Continuing Operations Before Income Taxes	4,769	5,006	5,311
Operating Segments | Medical
Segment Reporting Information [Line Items]
Income from Continuing Operations Before Income Taxes	1,967	2,215	1,985
Total Capital Expenditures	563	602	740
Total Depreciation and Amortization	1,199	1,144	1,097
Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Income from Continuing Operations Before Income Taxes	1,585	1,710	2,391
Total Capital Expenditures	139	213	297
Total Depreciation and Amortization	277	283	352
Operating Segments | Interventional
Segment Reporting Information [Line Items]
Income from Continuing Operations Before Income Taxes	1,217	1,081	933
Total Capital Expenditures	138	130	125
Total Depreciation and Amortization	799	789	769
Segment Reconciling Items
Segment Reporting Information [Line Items]
Acquisition-related integration and restructuring expense	(313)	(173)	(179)
Net interest expense	(403)	(382)	(460)
Corporate and All Other
Segment Reporting Information [Line Items]
Income from Continuing Operations Before Income Taxes	(2,391)	(2,668)	(2,981)
Total Capital Expenditures	35	28	32
Total Depreciation and Amortization	$ 13	$ 13	$ 12