Revenue (Disaggregation of Revenue by Geographical Region) (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Disaggregation of Revenue [Line Items]
Sales	$ 6,858	$ 4,343
Recurring revenue
Disaggregation of Revenue [Line Items]
Sales	5,079	3,207
Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Sales	1,779	1,136
North America
Disaggregation of Revenue [Line Items]
Sales	2,727	1,873
Western Europe
Disaggregation of Revenue [Line Items]
Sales	1,664	1,037
Other developed markets
Disaggregation of Revenue [Line Items]
Sales	372	281
High-growth markets
Disaggregation of Revenue [Line Items]
Sales	2,095	1,152
Operating segments | Life Sciences
Disaggregation of Revenue [Line Items]
Sales	3,546	1,650
Operating segments | Life Sciences | Recurring revenue
Disaggregation of Revenue [Line Items]
Sales	2,529	1,159
Operating segments | Life Sciences | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Sales	1,017	491
Operating segments | Life Sciences | North America
Disaggregation of Revenue [Line Items]
Sales	1,263	621
Operating segments | Life Sciences | Western Europe
Disaggregation of Revenue [Line Items]
Sales	970	471
Operating segments | Life Sciences | Other developed markets
Disaggregation of Revenue [Line Items]
Sales	225	153
Operating segments | Life Sciences | High-growth markets
Disaggregation of Revenue [Line Items]
Sales	1,088	405
Operating segments | Diagnostics
Disaggregation of Revenue [Line Items]
Sales	2,178	1,627
Operating segments | Diagnostics | Recurring revenue
Disaggregation of Revenue [Line Items]
Sales	1,902	1,428
Operating segments | Diagnostics | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Sales	276	199
Operating segments | Diagnostics | North America
Disaggregation of Revenue [Line Items]
Sales	972	755
Operating segments | Diagnostics | Western Europe
Disaggregation of Revenue [Line Items]
Sales	415	310
Operating segments | Diagnostics | Other developed markets
Disaggregation of Revenue [Line Items]
Sales	118	98
Operating segments | Diagnostics | High-growth markets
Disaggregation of Revenue [Line Items]
Sales	673	464
Operating segments | Environmental & Applied Solutions
Disaggregation of Revenue [Line Items]
Sales	1,134	1,066
Operating segments | Environmental & Applied Solutions | Recurring revenue
Disaggregation of Revenue [Line Items]
Sales	648	620
Operating segments | Environmental & Applied Solutions | Nonrecurring revenue
Disaggregation of Revenue [Line Items]
Sales	486	446
Operating segments | Environmental & Applied Solutions | North America
Disaggregation of Revenue [Line Items]
Sales	492	497
Operating segments | Environmental & Applied Solutions | Western Europe
Disaggregation of Revenue [Line Items]
Sales	279	256
Operating segments | Environmental & Applied Solutions | Other developed markets
Disaggregation of Revenue [Line Items]
Sales	29	30
Operating segments | Environmental & Applied Solutions | High-growth markets
Disaggregation of Revenue [Line Items]
Sales	$ 334	$ 283