Segment and Geographic Area Information - Depreciation and Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Depreciation	$ 1,340	$ 1,277	$ 1,254
Additions to Property and Equipment	2,245	2,209	1,775
Total Assets	81,414	73,214
Operating Segments
Segment Reporting Information [Line Items]
Depreciation	1,119	1,073	1,057
Additions to Property and Equipment	1,953	1,996	1,593
Total Assets	24,641	24,184	22,337
Operating Segments | Established Pharmaceuticals
Segment Reporting Information [Line Items]
Depreciation	96	104	97
Additions to Property and Equipment	183	185	175
Total Assets	3,087	3,118	2,883
Operating Segments | Nutritionals
Segment Reporting Information [Line Items]
Depreciation	159	155	155
Additions to Property and Equipment	382	457	251
Total Assets	4,404	4,270	3,625
Operating Segments | Diagnostics
Segment Reporting Information [Line Items]
Depreciation	521	499	494
Additions to Property and Equipment	758	750	832
Total Assets	7,678	7,767	7,985
Operating Segments | Medical Devices
Segment Reporting Information [Line Items]
Depreciation	343	315	311
Additions to Property and Equipment	630	604	335
Total Assets	9,472	9,029	7,844
Other
Segment Reporting Information [Line Items]
Depreciation	221	204	197
Additions to Property and Equipment	$ 292	$ 213	$ 182