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Segment Data - Financial Information for Company's Segments (Detail) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Integration, restructuring and transaction expense	$ (92)	$ (75)
Income Before Income Taxes	306	359
Operating Segments
Segment Reporting Information [Line Items]
Total Segment Operating Income	1,263	1,198
Operating Segments | Medical
Segment Reporting Information [Line Items]
Total Segment Operating Income	492	535
Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Total Segment Operating Income	383	372
Operating Segments | Interventional
Segment Reporting Information [Line Items]
Total Segment Operating Income	387	291
Segment Reconciling Items
Segment Reporting Information [Line Items]
Integration, restructuring and transaction expense	(92)	(75)
Net interest expense	(132)	(77)
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total Segment Operating Income	$ (733)	$ (688)

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