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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
--- | --- | ---
Jul. 02, 2022 | Jul. 03, 2021 | Jul. 02, 2022 | Jul. 03, 2021
Disaggregation of Revenue [Line Items] |  |  |  |
Total net sales | $ 714,319 | $ 681,647 | $ 1,404,891 | $ 1,290,192
Waters Instrument Systems [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total net sales | 280,846 | 261,363 | 550,808 | 477,435
Chemistry Consumables [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total net sales | 131,947 | 126,459 | 257,565 | 245,433
TA Instrument Systems [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total net sales | 56,837 | 53,133 | 112,097 | 100,109
Total product sales [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total net sales | 469,630 | 440,955 | 920,470 | 822,977
Waters Service [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total net sales | 222,359 | 219,502 | 439,935 | 426,334
TA Service [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total net sales | 22,330 | 21,190 | 44,486 | 40,881
Total service sales [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total net sales | $ 244,689 | $ 240,692 | $ 484,421 | $ 467,215

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