Revenue (Disaggregation of Revenue by Geographical Region) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jul. 01, 2022	Jun. 30, 2023	Jul. 01, 2022	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue	$ 7,157	$ 7,751	$ 14,324	$ 15,439
Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	5,338	5,892	10,724	11,790
Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	1,819	1,859	3,600	3,649
North America
Disaggregation of Revenue [Line Items]
Revenue	2,927	3,382	5,949	6,736
Western Europe
Disaggregation of Revenue [Line Items]
Revenue	1,708	1,691	3,416	3,519
Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	327	346	680	724
High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	2,195	2,332	4,279	4,460
Environmental & Applied Solutions
Disaggregation of Revenue [Line Items]
Revenue					$ 4,800
Operating segments | Biotechnology
Disaggregation of Revenue [Line Items]
Revenue	1,885	2,266	3,749	4,482
Operating segments | Biotechnology | Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	1,534	1,804	3,045	3,605
Operating segments | Biotechnology | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	351	462	704	877
Operating segments | Biotechnology | North America
Disaggregation of Revenue [Line Items]
Revenue	611	798	1,229	1,580
Operating segments | Biotechnology | Western Europe
Disaggregation of Revenue [Line Items]
Revenue	684	632	1,331	1,339
Operating segments | Biotechnology | Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	72	88	151	173
Operating segments | Biotechnology | High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	518	748	1,038	1,390
Operating segments | Life Sciences
Disaggregation of Revenue [Line Items]
Revenue	1,796	1,701	3,505	3,367
Operating segments | Life Sciences | Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	1,104	1,068	2,143	2,105
Operating segments | Life Sciences | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	692	633	1,362	1,262
Operating segments | Life Sciences | North America
Disaggregation of Revenue [Line Items]
Revenue	757	778	1,465	1,516
Operating segments | Life Sciences | Western Europe
Disaggregation of Revenue [Line Items]
Revenue	375	340	739	668
Operating segments | Life Sciences | Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	124	111	252	248
Operating segments | Life Sciences | High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	540	472	1,049	935
Operating segments | Diagnostics
Disaggregation of Revenue [Line Items]
Revenue	2,231	2,561	4,607	5,205
Operating segments | Diagnostics | Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	1,958	2,301	4,070	4,671
Operating segments | Diagnostics | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	273	260	537	534
Operating segments | Diagnostics | North America
Disaggregation of Revenue [Line Items]
Revenue	982	1,235	2,106	2,541
Operating segments | Diagnostics | Western Europe
Disaggregation of Revenue [Line Items]
Revenue	365	453	785	977
Operating segments | Diagnostics | Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	100	115	217	239
Operating segments | Diagnostics | High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	784	758	1,499	1,448
Operating segments | Environmental & Applied Solutions
Disaggregation of Revenue [Line Items]
Revenue	1,245	1,223	2,463	2,385
Operating segments | Environmental & Applied Solutions | Recurring revenue
Disaggregation of Revenue [Line Items]
Revenue	742	719	1,466	1,409
Operating segments | Environmental & Applied Solutions | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Revenue	503	504	997	976
Operating segments | Environmental & Applied Solutions | North America
Disaggregation of Revenue [Line Items]
Revenue	577	571	1,149	1,099
Operating segments | Environmental & Applied Solutions | Western Europe
Disaggregation of Revenue [Line Items]
Revenue	284	266	561	535
Operating segments | Environmental & Applied Solutions | Other developed markets
Disaggregation of Revenue [Line Items]
Revenue	31	32	60	64
Operating segments | Environmental & Applied Solutions | High-growth markets
Disaggregation of Revenue [Line Items]
Revenue	$ 353	$ 354	$ 693	$ 687