LOANS, Financial leasing and Covenants (Details) $ in Thousands	12 Months Ended
Dec. 31, 2024 USD ($) Installment	Jan. 31, 2023 ARS ($)
Financial Leasing [Abstract]
Number of monthly installments \| Installment	119
New lease incurred		$ 3,918,826
Bottom of Range [Member]
Covenants [Abstract]
Consolidated coverage ratio	2
Top of Range [Member]
Covenants [Abstract]
Consolidated debt ratio	3.5
Pampa Energia [Member]
Financial Leasing [Abstract]
Monthly payment amount	$ 623,457
Period of option to purchase financial leasing agreement for same amount	120 months

The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2024-01-01
-Paragraph 47
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_47_b&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_LeaseLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Refers to the consolidated coverage ratio (calculated as the quotient of the consolidated adjusted EBITDA earnings before financial results, income tax, depreciation and amortization) and the consolidated interest expense.

+ References

No definition available.

+ Details

Name:	tgs_ConsolidatedCoverageRatio
Namespace Prefix:	tgs_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Refers to the consolidated debt ratio (calculated as the quotient of the consolidated debt and the consolidated EBITDA).

+ References

No definition available.

+ Details

Name:	tgs_ConsolidatedDebtRatio
Namespace Prefix:	tgs_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	tgs_CovenantsAbstract
Namespace Prefix:	tgs_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of periodic installments for financing lease acquisition.

+ References

No definition available.

+ Details

Name:	tgs_FinanceLeaseNumberOfInstallments
Namespace Prefix:	tgs_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments for a finance lease.

+ References

No definition available.

+ Details

Name:	tgs_FinanceLeasePeriodicPaymentAmount
Namespace Prefix:	tgs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

Name:	tgs_FinancialLeasingAbstract
Namespace Prefix:	tgs_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Refers to the option to purchase financial leasing agreement for same amount.

+ References

No definition available.

+ Details

Name:	tgs_PeriodOfOptionToPurchaseFinancialLeasingAgreementForSameAmount
Namespace Prefix:	tgs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ConsolidatedStructuredEntitiesAxis=tgs_PampaEnergiaSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: