XML 168 R154.htm IDEA: XBRL DOCUMENT v3.25.1

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, 2024	Dec. 31, 2023
Actuarial assumption of discount rates [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Annual rate	3.18%	3.08%
Actuarial assumption of expected rates of salary increases [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Annual rate	2.00%	2.00%
Actuarial assumption of expected rates of inflation [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Annual rate	2.00%	2.00%
Actuarial assumption of expected rates of pension increases [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Annual rate	3.00%	3.00%
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 [domain]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2024-01-01
-Paragraph 145
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_145_b&doctype=Standard
-URIDate 2024-03-27

+ 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 [domain]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2024-01-01
-Paragraph 145
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_145_a&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022: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: