Revenue (Disaggregation of Revenue by Geographical Region) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2024	Jun. 30, 2023	Jun. 28, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 5,743	$ 5,912	$ 11,539	$ 11,861
Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	4,689	4,596	9,484	9,258
Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	1,054	1,316	2,055	2,603
North America
Disaggregation of Revenue [Line Items]
Revenue	2,434	2,350	5,066	4,800
Western Europe
Disaggregation of Revenue [Line Items]
Revenue	1,321	1,424	2,645	2,855
Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	292	296	595	620
High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	1,696	1,842	3,233	3,586
Operating segments | Biotechnology
Disaggregation of Revenue [Line Items]
Revenue	1,713	1,885	3,237	3,749
Operating segments | Biotechnology | Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	1,478	1,534	2,787	3,045
Operating segments | Biotechnology | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	235	351	450	704
Operating segments | Biotechnology | North America
Disaggregation of Revenue [Line Items]
Revenue	607	611	1,121	1,229
Operating segments | Biotechnology | Western Europe
Disaggregation of Revenue [Line Items]
Revenue	567	684	1,113	1,331
Operating segments | Biotechnology | Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	81	72	160	151
Operating segments | Biotechnology | High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	458	518	843	1,038
Operating segments | Life Sciences
Disaggregation of Revenue [Line Items]
Revenue	1,770	1,796	3,515	3,505
Operating segments | Life Sciences | Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	1,208	1,104	2,400	2,143
Operating segments | Life Sciences | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	562	692	1,115	1,362
Operating segments | Life Sciences | North America
Disaggregation of Revenue [Line Items]
Revenue	785	757	1,566	1,465
Operating segments | Life Sciences | Western Europe
Disaggregation of Revenue [Line Items]
Revenue	374	375	746	739
Operating segments | Life Sciences | Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	116	124	241	252
Operating segments | Life Sciences | High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	495	540	962	1,049
Operating segments | Diagnostics
Disaggregation of Revenue [Line Items]
Revenue	2,260	2,231	4,787	4,607
Operating segments | Diagnostics | Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	2,003	1,958	4,297	4,070
Operating segments | Diagnostics | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	257	273	490	537
Operating segments | Diagnostics | North America
Disaggregation of Revenue [Line Items]
Revenue	1,042	982	2,379	2,106
Operating segments | Diagnostics | Western Europe
Disaggregation of Revenue [Line Items]
Revenue	380	365	786	785
Operating segments | Diagnostics | Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	95	100	194	217
Operating segments | Diagnostics | High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	$ 743	$ 784	$ 1,428	$ 1,499