Goodwill and Intangible Assets, Net (Changes in the Carrying Amount of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 03, 2021	Dec. 29, 2019
Changes in the carrying amount of goodwill
Foreign currency translation	$ 120,682	$ (18,284)
Acquisitions, earn outs and other	215,205	176,903
Ending balance	3,447,114	3,111,227
Diagnostics [Member]
Changes in the carrying amount of goodwill
Foreign currency translation	62,596	(9,725)
Acquisitions, earn outs and other	16,224	4,516
Ending balance	1,691,227	1,612,407
Discovery & Analytical Solutions [Member]
Changes in the carrying amount of goodwill
Foreign currency translation	58,086	(8,559)
Acquisitions, earn outs and other	198,981	172,387
Ending balance	$ 1,755,887	$ 1,498,820

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
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(1))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: 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=120320667&loc=SL49117168-202975

Reference 3: 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