Segment Data Segment Data - Revenues by Geographic Areas (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Revenues	$ 18,870	$ 19,131	$ 16,074
Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	8,841	8,361	7,637
Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	5,564	6,530	4,675
Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	4,464	4,239	3,762
United States
Segment Reporting Information [Line Items]
Revenues	10,722	10,371	9,161
United States | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	4,950	4,544	4,247
United States | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	2,732	2,980	2,337
United States | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	3,040	2,847	2,577
Non-US
Segment Reporting Information [Line Items]
Revenues	8,148	8,760	6,912
Non-US | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	3,891	3,817	3,389
Non-US | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	2,833	3,550	2,337
Non-US | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	1,424	1,392	1,186
Medication Delivery Solutions | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	4,308	4,101	3,596
Medication Delivery Solutions | United States | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	2,483	2,253	1,979
Medication Delivery Solutions | Non-US | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	1,825	1,848	1,617
Medication Management Solutions | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	2,533	2,432	2,454
Medication Management Solutions | United States | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	1,935	1,863	1,865
Medication Management Solutions | Non-US | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	598	570	589
Pharmaceutical Systems | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	2,001	1,828	1,587
Pharmaceutical Systems | United States | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	533	428	404
Pharmaceutical Systems | Non-US | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	1,468	1,400	1,183
Integrated Diagnostic Solutions | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	4,185	5,225	3,532
Integrated Diagnostic Solutions | United States | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	2,190	2,477	1,872
Integrated Diagnostic Solutions | Non-US | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	1,995	2,748	1,659
Biosciences | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	1,379	1,305	1,143
Biosciences | United States | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	542	503	465
Biosciences | Non-US | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	838	802	678
Surgery | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	1,400	1,296	1,121
Surgery | United States | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	1,094	1,023	891
Surgery | Non-US | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	306	274	230
Peripheral Intervention | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	1,759	1,711	1,511
Peripheral Intervention | United States | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	960	931	871
Peripheral Intervention | Non-US | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	799	780	640
Urology and Critical Care | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	1,305	1,232	1,130
Urology and Critical Care | United States | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	986	894	815
Urology and Critical Care | Non-US | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	$ 319	$ 338	$ 315