Revenue (Revenue Disaggregation by Geographical Region and Revenue Type) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Sales	$ 24,568	$ 23,875	$ 23,890
North America
Disaggregation of Revenue [Line Items]
Sales	10,356	10,295	9,961
Western Europe
Disaggregation of Revenue [Line Items]
Sales	5,938	5,457	5,468
Other developed markets
Disaggregation of Revenue [Line Items]
Sales	1,252	1,253	1,270
High-growth markets
Disaggregation of Revenue [Line Items]
Sales	7,022	6,870	7,191
Recurring
Disaggregation of Revenue [Line Items]
Sales	20,127	19,366	18,682
Nonrecurring
Disaggregation of Revenue [Line Items]
Sales	4,441	4,509	5,208
Operating segments
Disaggregation of Revenue [Line Items]
Sales	24,568	23,875	23,890
Operating segments | Biotechnology
Disaggregation of Revenue [Line Items]
Sales	7,293	6,759	7,172
Operating segments | Biotechnology | North America
Disaggregation of Revenue [Line Items]
Sales	2,418	2,237	2,454
Operating segments | Biotechnology | Western Europe
Disaggregation of Revenue [Line Items]
Sales	2,558	2,296	2,407
Operating segments | Biotechnology | Other developed markets
Disaggregation of Revenue [Line Items]
Sales	341	335	329
Operating segments | Biotechnology | High-growth markets
Disaggregation of Revenue [Line Items]
Sales	1,976	1,891	1,982
Operating segments | Biotechnology | Recurring
Disaggregation of Revenue [Line Items]
Sales	6,424	5,758	5,897
Operating segments | Biotechnology | Nonrecurring
Disaggregation of Revenue [Line Items]
Sales	869	1,001	1,275
Operating segments | Life Sciences
Disaggregation of Revenue [Line Items]
Sales	7,334	7,329	7,141
Operating segments | Life Sciences | North America
Disaggregation of Revenue [Line Items]
Sales	3,018	3,199	2,999
Operating segments | Life Sciences | Western Europe
Disaggregation of Revenue [Line Items]
Sales	1,674	1,574	1,519
Operating segments | Life Sciences | Other developed markets
Disaggregation of Revenue [Line Items]
Sales	518	510	510
Operating segments | Life Sciences | High-growth markets
Disaggregation of Revenue [Line Items]
Sales	2,124	2,046	2,113
Operating segments | Life Sciences | Recurring
Disaggregation of Revenue [Line Items]
Sales	4,844	4,889	4,360
Operating segments | Life Sciences | Nonrecurring
Disaggregation of Revenue [Line Items]
Sales	2,490	2,440	2,781
Operating segments | Diagnostics
Disaggregation of Revenue [Line Items]
Sales	9,941	9,787	9,577
Operating segments | Diagnostics | North America
Disaggregation of Revenue [Line Items]
Sales	4,920	4,859	4,508
Operating segments | Diagnostics | Western Europe
Disaggregation of Revenue [Line Items]
Sales	1,706	1,587	1,542
Operating segments | Diagnostics | Other developed markets
Disaggregation of Revenue [Line Items]
Sales	393	408	431
Operating segments | Diagnostics | High-growth markets
Disaggregation of Revenue [Line Items]
Sales	2,922	2,933	3,096
Operating segments | Diagnostics | Recurring
Disaggregation of Revenue [Line Items]
Sales	8,859	8,719	8,425
Operating segments | Diagnostics | Nonrecurring
Disaggregation of Revenue [Line Items]
Sales	$ 1,082	$ 1,068	$ 1,152