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Business Segment Information - Summary of Net Sales for Company's Products and Services (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 27, 2020
Jun. 29, 2019
Jun. 27, 2020
Jun. 29, 2019
Disaggregation of Revenue [Line Items]        
Total net sales $ 519,984 $ 599,162 $ 984,923 $ 1,113,024
Waters Instrument Systems [Member]        
Disaggregation of Revenue [Line Items]        
Total net sales 181,399 238,777 324,228 423,389
Chemistry Consumables [Member]        
Disaggregation of Revenue [Line Items]        
Total net sales 95,105 100,292 192,350 199,545
TA Instrument Systems [Member]        
Disaggregation of Revenue [Line Items]        
Total net sales 38,416 48,196 72,525 84,834
Product [Member]        
Disaggregation of Revenue [Line Items]        
Total net sales 314,920 387,265 589,103 707,768
Waters Service [Member]        
Disaggregation of Revenue [Line Items]        
Total net sales 189,205 192,048 363,342 368,097
TA Service [Member]        
Disaggregation of Revenue [Line Items]        
Total net sales 15,859 19,849 32,478 37,159
Service [Member]        
Disaggregation of Revenue [Line Items]        
Total net sales $ 205,064 $ 211,897 $ 395,820 $ 405,256