XML 206 R193.htm IDEA: XBRL DOCUMENT v3.23.1

Income Tax Expense - Summary of Income Tax Rates (Detail)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
IRES (state tax) [member]
Disclosure of effective income tax rate [line items]
Applicable tax rate	24.00%	24.00%	24.00%
IRAP (regional tax) [member]
Disclosure of effective income tax rate [line items]
Applicable tax rate	4.82%	4.82%	4.82%

X

- Definition

The applicable income tax rate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2022-03-24
-Paragraph 81
-Subparagraph c
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2022-en-r&anchor=para_81_c_ii&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_ApplicableTaxRate
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent effective income tax rate.

+ References

No definition available.

+ Details

Name:	ntz_DisclosureOfEffectiveIncomeTaxRateLineItems
Namespace Prefix:	ntz_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ntz_TaxationInformationAxis=ntz_IRESMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ntz_TaxationInformationAxis=ntz_IRAPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: