Revenue (Revenue Disaggregation by Geographical Region and Revenue Type) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Sales	$ 23,875	$ 23,890	$ 26,643
North America
Disaggregation of Revenue [Line Items]
Sales	10,295	9,961	11,730
Western Europe
Disaggregation of Revenue [Line Items]
Sales	5,457	5,468	5,859
Other developed markets
Disaggregation of Revenue [Line Items]
Sales	1,253	1,270	1,345
High-growth markets
Disaggregation of Revenue [Line Items]
Sales	6,870	7,191	7,709
Recurring
Disaggregation of Revenue [Line Items]
Sales	19,366	18,682	20,876
Nonrecurring
Disaggregation of Revenue [Line Items]
Sales	4,509	5,208	5,767
Operating segments | Biotechnology
Disaggregation of Revenue [Line Items]
Sales	6,759	7,172	8,758
Operating segments | Biotechnology | North America
Disaggregation of Revenue [Line Items]
Sales	2,237	2,454	3,054
Operating segments | Biotechnology | Western Europe
Disaggregation of Revenue [Line Items]
Sales	2,296	2,407	2,645
Operating segments | Biotechnology | Other developed markets
Disaggregation of Revenue [Line Items]
Sales	335	329	358
Operating segments | Biotechnology | High-growth markets
Disaggregation of Revenue [Line Items]
Sales	1,891	1,982	2,701
Operating segments | Biotechnology | Recurring
Disaggregation of Revenue [Line Items]
Sales	5,758	5,897	6,958
Operating segments | Biotechnology | Nonrecurring
Disaggregation of Revenue [Line Items]
Sales	1,001	1,275	1,800
Operating segments | Life Sciences
Disaggregation of Revenue [Line Items]
Sales	7,329	7,141	7,036
Operating segments | Life Sciences | North America
Disaggregation of Revenue [Line Items]
Sales	3,199	2,999	3,154
Operating segments | Life Sciences | Western Europe
Disaggregation of Revenue [Line Items]
Sales	1,574	1,519	1,377
Operating segments | Life Sciences | Other developed markets
Disaggregation of Revenue [Line Items]
Sales	510	510	506
Operating segments | Life Sciences | High-growth markets
Disaggregation of Revenue [Line Items]
Sales	2,046	2,113	1,999
Operating segments | Life Sciences | Recurring
Disaggregation of Revenue [Line Items]
Sales	4,889	4,360	4,220
Operating segments | Life Sciences | Nonrecurring
Disaggregation of Revenue [Line Items]
Sales	2,440	2,781	2,816
Operating segments | Diagnostics
Disaggregation of Revenue [Line Items]
Sales	9,787	9,577	10,849
Operating segments | Diagnostics | North America
Disaggregation of Revenue [Line Items]
Sales	4,859	4,508	5,522
Operating segments | Diagnostics | Western Europe
Disaggregation of Revenue [Line Items]
Sales	1,587	1,542	1,837
Operating segments | Diagnostics | Other developed markets
Disaggregation of Revenue [Line Items]
Sales	408	431	481
Operating segments | Diagnostics | High-growth markets
Disaggregation of Revenue [Line Items]
Sales	2,933	3,096	3,009
Operating segments | Diagnostics | Recurring
Disaggregation of Revenue [Line Items]
Sales	8,719	8,425	9,698
Operating segments | Diagnostics | Nonrecurring
Disaggregation of Revenue [Line Items]
Sales	$ 1,068	$ 1,152	$ 1,151