Segment Data - Financial Information for Company's Segments (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Integration and restructuring expense	$ (101)	$ (62)	$ (176)	$ (106)
Income Before Income Taxes	633	529	991	1,009
Operating Segments
Segment Reporting Information [Line Items]
Income (Loss) Before Income Taxes	1,465	1,333	2,663	2,621
Operating Segments | Medical
Segment Reporting Information [Line Items]
Income (Loss) Before Income Taxes	662	641	1,197	1,195
Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Income (Loss) Before Income Taxes	415	394	787	827
Operating Segments | Interventional
Segment Reporting Information [Line Items]
Income (Loss) Before Income Taxes	388	297	679	598
Segment Reconciling Items
Segment Reporting Information [Line Items]
Integration and restructuring expense	(101)	(62)	(176)	(106)
Net interest expense	(99)	(108)	(176)	(204)
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Income (Loss) Before Income Taxes	$ (632)	$ (635)	$ (1,320)	$ (1,301)