Revenue (Disaggregation of Revenue by Geographical Region) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2024	Sep. 29, 2023	Sep. 27, 2024	Sep. 29, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 5,798	$ 5,624	$ 17,337	$ 17,485
Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	4,777	4,438	14,261	13,696
Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	1,021	1,186	3,076	3,789
North America
Disaggregation of Revenue [Line Items]
Revenue	2,456	2,375	7,522	7,175
Western Europe
Disaggregation of Revenue [Line Items]
Revenue	1,320	1,198	3,965	4,053
Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	299	300	894	920
High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	1,723	1,751	4,956	5,337
Operating segments | Biotechnology
Disaggregation of Revenue [Line Items]
Revenue	1,653	1,664	4,890	5,413
Operating segments | Biotechnology | Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	1,422	1,390	4,209	4,435
Operating segments | Biotechnology | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	231	274	681	978
Operating segments | Biotechnology | North America
Disaggregation of Revenue [Line Items]
Revenue	503	593	1,624	1,822
Operating segments | Biotechnology | Western Europe
Disaggregation of Revenue [Line Items]
Revenue	587	508	1,700	1,839
Operating segments | Biotechnology | Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	78	78	238	229
Operating segments | Biotechnology | High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	485	485	1,328	1,523
Operating segments | Life Sciences
Disaggregation of Revenue [Line Items]
Revenue	1,782	1,706	5,297	5,211
Operating segments | Life Sciences | Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	1,228	1,062	3,628	3,205
Operating segments | Life Sciences | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	554	644	1,669	2,006
Operating segments | Life Sciences | North America
Disaggregation of Revenue [Line Items]
Revenue	796	728	2,362	2,193
Operating segments | Life Sciences | Western Europe
Disaggregation of Revenue [Line Items]
Revenue	365	356	1,111	1,095
Operating segments | Life Sciences | Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	120	117	361	369
Operating segments | Life Sciences | High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	501	505	1,463	1,554
Operating segments | Diagnostics
Disaggregation of Revenue [Line Items]
Revenue	2,363	2,254	7,150	6,861
Operating segments | Diagnostics | Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	2,127	1,986	6,424	6,056
Operating segments | Diagnostics | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	236	268	726	805
Operating segments | Diagnostics | North America
Disaggregation of Revenue [Line Items]
Revenue	1,157	1,054	3,536	3,160
Operating segments | Diagnostics | Western Europe
Disaggregation of Revenue [Line Items]
Revenue	368	334	1,154	1,119
Operating segments | Diagnostics | Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	101	105	295	322
Operating segments | Diagnostics | High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	$ 737	$ 761	$ 2,165	$ 2,260