Goodwill and Intangible Assets, Net (Changes in the Carrying Amount of Goodwill) (Details) $ in Thousands	9 Months Ended
	Oct. 03, 2021 USD ($)
Changes in the carrying amount of goodwill
Balance at beginning of period	$ 3,447,114
Foreign currency translation	(69,843)
Goodwill, Acquisition, Earn Outs and Other Adjustments	4,043,000
Balance at end of period	7,420,271
Diagnostics [Member]
Changes in the carrying amount of goodwill
Balance at beginning of period	1,691,227
Foreign currency translation	(34,507)
Goodwill, Acquisition, Earn Outs and Other Adjustments	322,983
Balance at end of period	1,979,703
Discovery & Analytical Solutions [Member]
Changes in the carrying amount of goodwill
Balance at beginning of period	1,755,887
Foreign currency translation	(35,336)
Goodwill, Acquisition, Earn Outs and Other Adjustments	3,720,017
Balance at end of period	$ 5,440,568