Segment Data - Revenues by Geographic Areas (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]
Revenues	$ 5,045	$ 4,821	$ 9,751	$ 9,407
Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	2,449	2,360	4,679	4,515
Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	1,304	1,275	2,592	2,577
Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	1,292	1,186	2,480	2,315
United States
Segment Reporting Information [Line Items]
Revenues	2,906	2,733	5,655	5,462
United States | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	1,429	1,339	2,789	2,642
United States | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	579	581	1,166	1,226
United States | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	898	813	1,699	1,595
International
Segment Reporting Information [Line Items]
Revenues	2,139	2,088	4,096	3,944
International | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	1,020	1,022	1,890	1,873
International | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	724	694	1,426	1,351
International | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	395	373	781	720
Medication Delivery Solutions | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	1,107	1,070	2,159	2,109
Medication Delivery Solutions | United States | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	662	616	1,301	1,235
Medication Delivery Solutions | International | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	445	454	857	873
Medication Management Solutions | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	772	723	1,518	1,430
Medication Management Solutions | United States | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	609	550	1,203	1,114
Medication Management Solutions | International | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	162	173	315	316
Pharmaceutical Systems | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	570	567	1,002	976
Pharmaceutical Systems | United States | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	157	173	285	292
Pharmaceutical Systems | International | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	413	394	717	684
Integrated Diagnostic Solutions | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	927	888	1,840	1,841
Integrated Diagnostic Solutions | United States | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	437	422	881	930
Integrated Diagnostic Solutions | International | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	490	466	959	911
Biosciences | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	377	386	752	736
Biosciences | United States | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	142	159	285	296
Biosciences | International | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	235	228	466	440
Surgery | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	379	381	748	744
Surgery | United States | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	287	295	568	582
Surgery | International | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	92	86	181	162
Peripheral Intervention | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	489	468	943	902
Peripheral Intervention | United States | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	264	256	498	492
Peripheral Intervention | International | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	225	213	444	410
Urology and Critical Care | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	424	336	789	670
Urology and Critical Care | United States | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	347	263	634	522
Urology and Critical Care | International | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	$ 78	$ 74	$ 156	$ 148