v3.26.1
Acquisitions - Additional Information (Detail) - USD ($)
shares in Thousands, $ in Millions
3 Months Ended 6 Months Ended
Feb. 09, 2026
Feb. 06, 2026
Jul. 04, 2026
Jul. 04, 2026
Jun. 28, 2025
Dec. 31, 2025
Business Acquisition [Line Items]            
Goodwill, measurement period adjustment     $ 95      
Decrease in long term net assets measurement period adjustment     16      
Goodwill increase from deferred tax measurement period adjustment     75      
Decrease in net working capital measurement period adjustment     4      
Prepaid consideration for deferred close businesses $ 129          
Debt Assumed In Business Combination     4,000 $ 4,000    
Contingent Warranty Obligations Recognized In Business Combination     11 11    
Compensation Expense, Excluding Cost of Good and Service Sold   $ 7        
Revenue       3,185 $ 3,008  
Business acquisition, goodwill, not deductible for tax purposes 8,100   9,421 9,421   $ 1,340
Business Acquisitions Pro Forma Net Income Loss Before Tax     203 326    
Analytical Sciences Materials [Member]            
Business Acquisition [Line Items]            
Goodwill Deductible For Tax Purpose Of Waters Advanced Diagnostics 900          
Advanced Diagnostics [Member]            
Business Acquisition [Line Items]            
Goodwill Deductible For Tax Purpose Of Waters Biosciences 3,300          
Biosciences [Member]            
Business Acquisition [Line Items]            
Business acquisition, goodwill, not deductible for tax purposes $ 3,900          
Waters Common Stock [Member]            
Business Acquisition [Line Items]            
Business Combination, Voting Equity Interest Acquired, Percentage 60.80%          
BDS Business [Member]            
Business Acquisition [Line Items]            
Aggregate consideration paid for acquird entity $ 13,000          
Stock Issued During Period, Shares, Acquisitions 38,542          
Business Combination, Voting Equity Interest Acquired, Percentage 39.20%          
Transaction Related Costs     1 58    
Revenue     $ 817 $ 1,300