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Basis of Presentation and Summary of Significant Accounting Policies - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Waters 401(k) Restoration Plan assets $ 26,460 $ 25,532
Total 53,944 45,788
Contingent consideration   1,509
Total 1,312 6,390
Foreign Currency Exchange Contract [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value, derivative asset 129 231
Foreign currency exchange contracts 119 98
Cross Currency Interest Rate Contract [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value, derivative asset 25,679 19,163
Foreign currency exchange contracts 1,018 4,783
Interest Rate Swaps Cash Flow Hedges [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value, derivative asset 778  
Foreign currency exchange contracts 175  
Time Deposits [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale securities 898 862
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Waters 401(k) Restoration Plan assets 26,460 25,532
Total 26,460 25,532
Total 0 0
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 2) [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total 27,484 20,256
Total 1,312 4,881
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 2) [Member] | Foreign Currency Exchange Contract [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value, derivative asset 129 231
Foreign currency exchange contracts 119 98
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 2) [Member] | Cross Currency Interest Rate Contract [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value, derivative asset 25,679 19,163
Foreign currency exchange contracts 1,018 4,783
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 2) [Member] | Interest Rate Swaps Cash Flow Hedges [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value, derivative asset 778  
Foreign currency exchange contracts 175  
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total 0 0
Contingent consideration   1,509
Total $ 0 $ 1,509