Revenue (Revenue Disaggregation by Geographical Region and Revenue Type) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 29, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jul. 01, 2022	Apr. 01, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Sales	$ 6,405	$ 5,624	$ 5,912	$ 5,949	$ 7,134	$ 6,455	$ 6,528	$ 6,526	$ 23,890	$ 26,643	$ 24,802
North America
Disaggregation of Revenue [Line Items]
Sales									9,961	11,730	9,798
Western Europe
Disaggregation of Revenue [Line Items]
Sales									5,468	5,859	5,877
Other developed markets
Disaggregation of Revenue [Line Items]
Sales									1,270	1,345	1,357
High-growth markets
Disaggregation of Revenue [Line Items]
Sales									7,191	7,709	7,770
Recurring
Disaggregation of Revenue [Line Items]
Sales									18,682	20,876	19,135
Nonrecurring
Disaggregation of Revenue [Line Items]
Sales									5,208	5,767	5,667
Operating segments | Biotechnology
Disaggregation of Revenue [Line Items]
Sales									7,172	8,758	8,570
Operating segments | Biotechnology | North America
Disaggregation of Revenue [Line Items]
Sales									2,454	3,054	2,899
Operating segments | Biotechnology | Western Europe
Disaggregation of Revenue [Line Items]
Sales									2,407	2,645	2,497
Operating segments | Biotechnology | Other developed markets
Disaggregation of Revenue [Line Items]
Sales									329	358	368
Operating segments | Biotechnology | High-growth markets
Disaggregation of Revenue [Line Items]
Sales									1,982	2,701	2,806
Operating segments | Biotechnology | Recurring
Disaggregation of Revenue [Line Items]
Sales									5,897	6,958	6,772
Operating segments | Biotechnology | Nonrecurring
Disaggregation of Revenue [Line Items]
Sales									1,275	1,800	1,798
Operating segments | Life Sciences
Disaggregation of Revenue [Line Items]
Sales									7,141	7,036	6,388
Operating segments | Life Sciences | North America
Disaggregation of Revenue [Line Items]
Sales									2,999	3,154	2,534
Operating segments | Life Sciences | Western Europe
Disaggregation of Revenue [Line Items]
Sales									1,519	1,377	1,540
Operating segments | Life Sciences | Other developed markets
Disaggregation of Revenue [Line Items]
Sales									510	506	508
Operating segments | Life Sciences | High-growth markets
Disaggregation of Revenue [Line Items]
Sales									2,113	1,999	1,806
Operating segments | Life Sciences | Recurring
Disaggregation of Revenue [Line Items]
Sales									4,360	4,220	3,756
Operating segments | Life Sciences | Nonrecurring
Disaggregation of Revenue [Line Items]
Sales									2,781	2,816	2,632
Operating segments | Diagnostics
Disaggregation of Revenue [Line Items]
Sales									9,577	10,849	9,844
Operating segments | Diagnostics | North America
Disaggregation of Revenue [Line Items]
Sales									4,508	5,522	4,365
Operating segments | Diagnostics | Western Europe
Disaggregation of Revenue [Line Items]
Sales									1,542	1,837	1,840
Operating segments | Diagnostics | Other developed markets
Disaggregation of Revenue [Line Items]
Sales									431	481	481
Operating segments | Diagnostics | High-growth markets
Disaggregation of Revenue [Line Items]
Sales									3,096	3,009	3,158
Operating segments | Diagnostics | Recurring
Disaggregation of Revenue [Line Items]
Sales									8,425	9,698	8,607
Operating segments | Diagnostics | Nonrecurring
Disaggregation of Revenue [Line Items]
Sales									$ 1,152	$ 1,151	$ 1,237