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LOANS, Covenants and Financial leasing (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) Installment
Financial Leasing [Abstract]
Number of monthly installments | Installment	119
Bottom of Range [Member]
Covenants [Abstract]
Consolidated coverage ratio	2.0
Top of Range [Member]
Covenants [Abstract]
Consolidated debt ratio	3.75
Pampa Energia [Member]
Financial Leasing [Abstract]
Monthly payment amount | $	$ 623,457
Period of option to purchase financial leasing agreement for same amount	120 months

X

- 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

X

- 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

X

- References

No definition available.

+ Details

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

X

- 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

X

- 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

X

- References

No definition available.

+ Details

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

X

- 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

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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

X

- Details

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