Revenue (Disaggregation of Revenue by Geographical Region) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 7,751	$ 7,218	$ 15,439	$ 14,076
Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	5,892	5,320	11,790	10,399
Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	1,859	1,898	3,649	3,677
North America
Disaggregation of Revenue [Line Items]
Revenue	3,382	2,816	6,736	5,543
Western Europe
Disaggregation of Revenue [Line Items]
Revenue	1,691	1,770	3,519	3,434
Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	346	350	724	722
High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	2,332	2,282	4,460	4,377
Operating segments | Life Sciences
Disaggregation of Revenue [Line Items]
Revenue	3,967	3,734	7,849	7,280
Operating segments | Life Sciences | Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	2,872	2,640	5,710	5,169
Operating segments | Life Sciences | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	1,095	1,094	2,139	2,111
Operating segments | Life Sciences | North America
Disaggregation of Revenue [Line Items]
Revenue	1,576	1,349	3,096	2,612
Operating segments | Life Sciences | Western Europe
Disaggregation of Revenue [Line Items]
Revenue	972	1,052	2,007	2,022
Operating segments | Life Sciences | Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	199	209	421	434
Operating segments | Life Sciences | High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	1,220	1,124	2,325	2,212
Operating segments | Diagnostics
Disaggregation of Revenue [Line Items]
Revenue	2,561	2,336	5,205	4,514
Operating segments | Diagnostics | Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	2,301	2,022	4,671	3,924
Operating segments | Diagnostics | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	260	314	534	590
Operating segments | Diagnostics | North America
Disaggregation of Revenue [Line Items]
Revenue	1,235	970	2,541	1,942
Operating segments | Diagnostics | Western Europe
Disaggregation of Revenue [Line Items]
Revenue	453	443	977	858
Operating segments | Diagnostics | Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	115	111	239	229
Operating segments | Diagnostics | High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	758	812	1,448	1,485
Operating segments | Environmental & Applied Solutions
Disaggregation of Revenue [Line Items]
Revenue	1,223	1,148	2,385	2,282
Operating segments | Environmental & Applied Solutions | Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	719	658	1,409	1,306
Operating segments | Environmental & Applied Solutions | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	504	490	976	976
Operating segments | Environmental & Applied Solutions | North America
Disaggregation of Revenue [Line Items]
Revenue	571	497	1,099	989
Operating segments | Environmental & Applied Solutions | Western Europe
Disaggregation of Revenue [Line Items]
Revenue	266	275	535	554
Operating segments | Environmental & Applied Solutions | Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	32	30	64	59
Operating segments | Environmental & Applied Solutions | High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	$ 354	$ 346	$ 687	$ 680