Segment Data - Revenues by Geographic Areas (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Revenues	$ 4,821	$ 4,750	$ 9,407	$ 9,468
Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	2,360	2,154	4,515	4,274
Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	1,275	1,485	2,577	2,968
Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	1,186	1,111	2,315	2,225
United States
Segment Reporting Information [Line Items]
Revenues	2,733	2,669	5,462	5,372
United States | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	1,339	1,176	2,642	2,383
United States | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	581	747	1,226	1,490
United States | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	813	746	1,595	1,498
International
Segment Reporting Information [Line Items]
Revenues	2,088	2,081	3,944	4,096
International | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	1,022	978	1,873	1,892
International | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	694	738	1,351	1,478
International | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	373	364	720	727
Medication Delivery Solutions | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	1,070	1,049	2,109	2,146
Medication Delivery Solutions | United States | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	616	590	1,235	1,210
Medication Delivery Solutions | International | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	454	460	873	936
Medication Management Solutions | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	723	604	1,430	1,231
Medication Management Solutions | United States | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	550	461	1,114	945
Medication Management Solutions | International | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	173	143	316	286
Pharmaceutical Systems | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	567	501	976	897
Pharmaceutical Systems | United States | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	173	125	292	228
Pharmaceutical Systems | International | Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	394	375	684	669
Integrated Diagnostic Solutions | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	888	1,150	1,841	2,295
Integrated Diagnostic Solutions | United States | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	422	618	930	1,232
Integrated Diagnostic Solutions | International | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	466	532	911	1,062
Biosciences | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	386	335	736	674
Biosciences | United States | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	159	129	296	258
Biosciences | International | Operating Segments | Life Sciences
Segment Reporting Information [Line Items]
Revenues	228	206	440	416
Surgery | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	381	340	744	701
Surgery | United States | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	295	268	582	549
Surgery | International | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	86	72	162	152
Peripheral Intervention | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	468	450	902	863
Peripheral Intervention | United States | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	256	240	492	457
Peripheral Intervention | International | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	213	210	410	407
Urology and Critical Care | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	336	320	670	661
Urology and Critical Care | United States | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	263	239	522	492
Urology and Critical Care | International | Operating Segments | Interventional
Segment Reporting Information [Line Items]
Revenues	$ 74	$ 82	$ 148	$ 168