Revenue (Disaggregation of Revenue by Geographical Region) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2021	Jul. 03, 2020	Jul. 02, 2021	Jul. 03, 2020
Disaggregation of Revenue [Line Items]
Sales	$ 7,218	$ 5,297	$ 14,076	$ 9,640
Recurring revenue
Disaggregation of Revenue [Line Items]
Sales	5,320	3,815	10,399	7,022
Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Sales	1,898	1,482	3,677	2,618
North America
Disaggregation of Revenue [Line Items]
Sales	2,816	2,142	5,543	4,015
Western Europe
Disaggregation of Revenue [Line Items]
Sales	1,770	1,247	3,434	2,284
Other developed markets
Disaggregation of Revenue [Line Items]
Sales	350	303	722	584
High-growth markets
Disaggregation of Revenue [Line Items]
Sales	2,282	1,605	4,377	2,757
Operating segments | Life Sciences
Disaggregation of Revenue [Line Items]
Sales	3,734	2,642	7,280	4,292
Operating segments | Life Sciences | Recurring revenue
Disaggregation of Revenue [Line Items]
Sales	2,640	1,900	5,169	3,059
Operating segments | Life Sciences | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Sales	1,094	742	2,111	1,233
Operating segments | Life Sciences | North America
Disaggregation of Revenue [Line Items]
Sales	1,349	999	2,612	1,620
Operating segments | Life Sciences | Western Europe
Disaggregation of Revenue [Line Items]
Sales	1,052	712	2,022	1,183
Operating segments | Life Sciences | Other developed markets
Disaggregation of Revenue [Line Items]
Sales	209	178	434	331
Operating segments | Life Sciences | High-growth markets
Disaggregation of Revenue [Line Items]
Sales	1,124	753	2,212	1,158
Operating segments | Diagnostics
Disaggregation of Revenue [Line Items]
Sales	2,336	1,660	4,514	3,287
Operating segments | Diagnostics | Recurring revenue
Disaggregation of Revenue [Line Items]
Sales	2,022	1,335	3,924	2,763
Operating segments | Diagnostics | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Sales	314	325	590	524
Operating segments | Diagnostics | North America
Disaggregation of Revenue [Line Items]
Sales	970	691	1,942	1,446
Operating segments | Diagnostics | Western Europe
Disaggregation of Revenue [Line Items]
Sales	443	315	858	625
Operating segments | Diagnostics | Other developed markets
Disaggregation of Revenue [Line Items]
Sales	111	96	229	194
Operating segments | Diagnostics | High-growth markets
Disaggregation of Revenue [Line Items]
Sales	812	558	1,485	1,022
Operating segments | Environmental & Applied Solutions
Disaggregation of Revenue [Line Items]
Sales	1,148	995	2,282	2,061
Operating segments | Environmental & Applied Solutions | Recurring revenue
Disaggregation of Revenue [Line Items]
Sales	658	580	1,306	1,200
Operating segments | Environmental & Applied Solutions | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Sales	490	415	976	861
Operating segments | Environmental & Applied Solutions | North America
Disaggregation of Revenue [Line Items]
Sales	497	452	989	949
Operating segments | Environmental & Applied Solutions | Western Europe
Disaggregation of Revenue [Line Items]
Sales	275	220	554	476
Operating segments | Environmental & Applied Solutions | Other developed markets
Disaggregation of Revenue [Line Items]
Sales	30	29	59	59
Operating segments | Environmental & Applied Solutions | High-growth markets
Disaggregation of Revenue [Line Items]
Sales	$ 346	$ 294	$ 680	$ 577