Revenue (Disaggregation of Revenue by Geographical Region) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 5,796	$ 5,949
Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	4,795	4,662
Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	1,001	1,287
North America
Disaggregation of Revenue [Line Items]
Revenue	2,632	2,450
Western Europe
Disaggregation of Revenue [Line Items]
Revenue	1,324	1,431
Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	303	324
High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	1,537	1,744
Operating segments | Biotechnology
Disaggregation of Revenue [Line Items]
Revenue	1,524	1,864
Operating segments | Biotechnology | Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	1,309	1,511
Operating segments | Biotechnology | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	215	353
Operating segments | Biotechnology | North America
Disaggregation of Revenue [Line Items]
Revenue	514	618
Operating segments | Biotechnology | Western Europe
Disaggregation of Revenue [Line Items]
Revenue	546	647
Operating segments | Biotechnology | Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	79	79
Operating segments | Biotechnology | High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	385	520
Operating segments | Life Sciences
Disaggregation of Revenue [Line Items]
Revenue	1,745	1,709
Operating segments | Life Sciences | Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	1,192	1,039
Operating segments | Life Sciences | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	553	670
Operating segments | Life Sciences | North America
Disaggregation of Revenue [Line Items]
Revenue	781	708
Operating segments | Life Sciences | Western Europe
Disaggregation of Revenue [Line Items]
Revenue	372	364
Operating segments | Life Sciences | Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	125	128
Operating segments | Life Sciences | High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	467	509
Operating segments | Diagnostics
Disaggregation of Revenue [Line Items]
Revenue	2,527	2,376
Operating segments | Diagnostics | Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	2,294	2,112
Operating segments | Diagnostics | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	233	264
Operating segments | Diagnostics | North America
Disaggregation of Revenue [Line Items]
Revenue	1,337	1,124
Operating segments | Diagnostics | Western Europe
Disaggregation of Revenue [Line Items]
Revenue	406	420
Operating segments | Diagnostics | Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	99	117
Operating segments | Diagnostics | High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	$ 685	$ 715