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Business Segment Information - Summary of Net Sales for Company's Products and Services (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Apr. 02, 2022
Apr. 03, 2021
Disaggregation of Revenue [Line Items]    
Total net sales $ 690,572 $ 608,545
Waters Instrument Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 269,962 216,072
Chemistry Consumables [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 125,618 118,974
TA Instrument Systems [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 55,260 46,976
Total product sales [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 450,840 382,022
Waters Service [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 217,576 206,832
TA Service [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales 22,156 19,691
Total service sales [Member]    
Disaggregation of Revenue [Line Items]    
Total net sales $ 239,732 $ 226,523