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v3.25.1

Other current financial receivables - Additional Information (Detail) € in Millions | Dec. 31, 2024 EUR (€)
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Trade and other current receivables [abstract] |
Interest receivable | € 1
Loan receivable interest rate | 0.25%

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- Definition The amount of current interest receivable. [Refer: Interest receivable] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_CurrentInterestReceivable
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | ifrs-full_TradeAndOtherCurrentReceivablesAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Loan receivable interest rate. + References No definition available. + Details
Name: | ntz_LoanReceivableInterestRate
Namespace Prefix: | ntz_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant