| **Fair Value Measurements - Carrying Amounts and Fair Values of Financial Instruments, Other than Cash and Cash Equivalents, Receivables and Accounts Payable (Detail) - USD ($) $ in Thousands** | 3 Months Ended | 12 Months Ended |             |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------|-----------------|-------------|
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| **Schedule Of Carrying Amounts And Fair Values Of Financial Instruments [Abstract]**                                                                                                              |           |            |        |   |
| Long-term debt (including current portion), Carrying Amount                                                                                                                                       | $ 1,732,037    |            | $ 1,732,037 | $ 737,857 |
| Long-term debt (including current portion), Fair Value                                                                                                                                            | 1,699,187      |            | 1,699,187   | $ 714,286 |
| Other Comprehensive Income (Loss), Net Investment Hedge, Net of Tax                                                                                                                               | $ 7,846        | $ (2,467)       |        |   |
| Net Investment Hedge Gain (Loss)                                                                                                                                                                  |           |            | $ 15,544    |   |

| X                                                                                                                                                                                                                                                  |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Net Investment Hedge Gain (Loss)
+ References
No definition available.
+ Details**Name:**ndsn_NetInvestmentHedgeGainLoss**Namespace Prefix:**ndsn_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                 |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Other Comprehensive Income (Loss), Net Investment Hedge, Net of Tax
+ References
No definition available.
+ Details**Name:**ndsn_OtherComprehensiveIncomeLossNetInvestmentHedgeNetOfTax**Namespace Prefix:**ndsn_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                            |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Schedule of carrying amounts and fair values of financial instruments.
+ References
No definition available.
+ Details**Name:**ndsn_ScheduleOfCarryingAmountsAndFairValuesOfFinancialInstrumentsAbstract**Namespace Prefix:**ndsn_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |
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| - Definition
Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.
+ References
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+ Details**Name:**us-gaap_LongTermDebt**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**instant |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.
+ References
No definition available.
+ Details**Name:**us-gaap_LongTermDebtFairValue**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**instant |