XML 155 R142.htm IDEA: XBRL DOCUMENT
v3.23.1

Employees' Leaving Entitlement - Summary of Assumptions Used in Determining Present Value of Defined Benefit Obligation Related to Employee Benefit Obligation (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Actuarial assumption of discount rates [member] |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Annual rate | 3.63% | 0.98%
Actuarial assumption of expected rates of salary increases [member] |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Annual rate | 2.30% | 1.75%
Actuarial assumption of expected rates of inflation [member] |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Annual rate | 2.30% | 1.75%
Actuarial assumption of expected rates of pension increases [member] |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Annual rate | 3.23% | 2.81%
Actuarial assumption of mortality rates [member] |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Actuarial Assumption | RG48 mortality tables published by the General State Accounting | RG48 mortality tables published by the General State Accounting
Actuarial assumption of inability rates [member] |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Actuarial Assumption | National Institute for Social Security tables, by age and sex | National Institute for Social Security tables, by age and sex
Actuarial assumption of retirement age [member] |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Actuarial Assumption | 100% upon achievement of AGO requisites | 100% upon achievement of AGO requisites
Actuarial assumption frequency of turnover [member] |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Annual rate | 2.00% | 2.00%
Actuarial assumption frequency of defined benefit obligation [member] |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Annual rate | 2.00% | 2.00%

X
- Definition The description of the methods and assumptions used when preparing a sensitivity analysis for significant actuarial assumptions. [Refer: Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2022-03-24 -Paragraph 145 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_145_b&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_DescriptionOfMethodsAndAssumptionsUsedInPreparingSensitivityAnalysisForActuarialAssumptions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The reasonably possible percentage of the increase in the actuarial assumption used to determine the present value of defined benefit obligation. [Refer: Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2022-03-24 -Paragraph 145 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_145_a&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
Namespace Prefix: | ifrs-full_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ifrs-full_ActuarialAssumptionsAxis=ifrs-full_ActuarialAssumptionOfDiscountRatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ActuarialAssumptionsAxis=ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ActuarialAssumptionsAxis=ifrs-full_ActuarialAssumptionOfExpectedRatesOfInflationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ActuarialAssumptionsAxis=ifrs-full_ActuarialAssumptionOfExpectedRatesOfPensionIncreasesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ActuarialAssumptionsAxis=ifrs-full_ActuarialAssumptionOfMortalityRatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ActuarialAssumptionsAxis=ntz_ActuarialAssumptionOfInabilityRatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ActuarialAssumptionsAxis=ifrs-full_ActuarialAssumptionOfRetirementAgeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ActuarialAssumptionsAxis=ntz_ActuarialAssumptionFrequencyOfTurnoverMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ActuarialAssumptionsAxis=ntz_ActuarialAssumptionFrequencyOfDefinedBenefitObligationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |