Goodwill And Other Intangible Assets (Goodwill by Segment) (Details) - USD ($) $ in Millions	Jul. 02, 2021	Dec. 31, 2020
Goodwill [Line Items]
Total goodwill	$ 35,590	$ 35,420
Operating segments \| Life Sciences
Goodwill [Line Items]
Total goodwill	26,025	25,812
Operating segments \| Diagnostics
Goodwill [Line Items]
Total goodwill	7,030	7,082
Operating segments \| Environmental & Applied Solutions
Goodwill [Line Items]
Total goodwill	$ 2,535	$ 2,526

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
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