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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
Dec. 31, 2024
Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Waters 401(k) Restoration Plan assets $ 30,137 $ 28,995
Total 58,252 34,911
Total 902 16,565
Foreign Currency Exchange Contract [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value, derivative asset 482 183
Foreign currency exchange contracts 261 207
Cross Currency Interest Rate Contract [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value, derivative asset 26,196 4,835
Foreign currency exchange contracts   13,384
Interest Rate Swaps Cash Flow Hedges [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value, derivative asset 503  
Foreign currency exchange contracts 641 2,974
Time Deposits [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale securities 934 898
Significant Unobservable Inputs (Level 2) [Member] | Time Deposits [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale securities 934 898
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 30,137 28,995
Total 30,137 28,995
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 28,115 5,916
Total 902 16,565
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 482 183
Foreign currency exchange contracts 261 207
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 26,196 4,835
Foreign currency exchange contracts   13,384
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 503  
Foreign currency exchange contracts 641 2,974
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
Total $ 0 $ 0