Goodwill and Intangible Assets, Net (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Jan. 01, 2023	Jan. 02, 2022
Goodwill and Intangible Assets Net [Line Items]
Total amortization expense related to finite-lived intangible assets	$ 365,100	$ 370,600	$ 256,600
Future Amortization Expense, Year One	362,600
Future Amortization Expense, Year Two	335,000
Future Amortization Expense, Year Three	328,800
Future Amortization Expense, Year Four	301,600
Future Amortization Expense, Year Five	275,900
Finite-Lived Intangible Assets, Net	3,022,321	3,377,174
Beginning balance	$ 6,533,550	6,481,768	6,627,119
Impairment Testing Date	January 2, 2023
Trade Names And Trademarks [Member]
Goodwill and Intangible Assets Net [Line Items]
Finite-Lived Intangible Assets, Net	$ 71,761	85,863
Licenses [Member]
Goodwill and Intangible Assets Net [Line Items]
Finite-Lived Intangible Assets, Net	10,467	8,360
Diagnostics [Member]
Goodwill and Intangible Assets Net [Line Items]
Beginning balance	$ 1,945,612	$ 1,930,193	$ 1,970,350