v3.26.1
Business Combinations (Narrative) (Details)
$ in Thousands
3 Months Ended
Apr. 05, 2026
USD ($)
employees
Dec. 28, 2025
USD ($)
Mar. 30, 2025
USD ($)
Dec. 29, 2024
USD ($)
Business Combination [Line Items]        
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value $ 25,011 $ 17,869 $ 19,740 $ 21,753
Goodwill 6,610,750 6,613,493    
Goodwill, Acquisition $ 32,035      
Advanced Chemistry Development Inc. [Member]        
Business Combination [Line Items]        
Business Combination, Number Of Employees Acquired | employees 200      
Life Sciences [Member]        
Business Combination [Line Items]        
Goodwill $ 4,752,045 4,744,962    
Goodwill, Acquisition $ 32,035      
Life Sciences [Member] | Advanced Chemistry Development Inc. [Member]        
Business Combination [Line Items]        
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 11 years 3 months 18 days      
Goodwill, Acquisition $ 32,000      
Diagnostics [Member]        
Business Combination [Line Items]        
Goodwill 1,858,705 $ 1,868,531    
Goodwill, Acquisition 0      
Customer Relationships [Member] | Life Sciences [Member] | Advanced Chemistry Development Inc. [Member]        
Business Combination [Line Items]        
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived 18,200      
Trademarks and Trade Names [Member] | Life Sciences [Member] | Advanced Chemistry Development Inc. [Member]        
Business Combination [Line Items]        
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived 800      
Backlog [Member] | Life Sciences [Member] | Advanced Chemistry Development Inc. [Member]        
Business Combination [Line Items]        
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived 1,100      
Developed Technology [Member] | Life Sciences [Member] | Advanced Chemistry Development Inc. [Member]        
Business Combination [Line Items]        
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived 30,100      
United States of America, Dollars | Advanced Chemistry Development Inc. [Member]        
Business Combination [Line Items]        
Business Acquisition, Cost of Acquired Entity, Cash Paid Including Working Capital And Other Adjustments 72,000      
Business Combination, Contingent Consideration, Liability $ 8,000