Goodwill and Other Intangible Assets (Goodwill by Segment) (Details) - USD ($) $ in Millions	Apr. 03, 2020	Dec. 31, 2019
Goodwill [Line Items]
Total goodwill	$ 33,725.5	$ 22,712.5
Operating segments \| Life Sciences
Goodwill [Line Items]
Total goodwill	24,703.0	13,471.8
Operating segments \| Diagnostics
Goodwill [Line Items]
Total goodwill	6,740.1	6,901.2
Operating segments \| Environmental & Applied Solutions
Goodwill [Line Items]
Total goodwill	$ 2,282.4	$ 2,339.5

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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant