FINANCIAL RISK MANAGEMENT, Foreign Exchange Risk (Details) - ARS ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Foreign exchange risk [Abstract]
Number of working days to settle commitment in foreign exchange market	5 days
Percentage of principal amount maturing in maximum period	40.00%
Average life for refinanced new external indebtedness	2 years
Pretax loss	$ 49,378,955	$ 65,583,161	$ 22,612,275
Foreign Exchange Risk [Member]
Foreign exchange risk [Abstract]
Percentage of funds denominated in US dollars to mitigate foreign exchange risk	89.00%
Percentage appreciation (depreciation) of US Dollar against Argentine Peso	10.00%
Pretax loss	$ (1,975,626)	$ (3,962,154)
U.S. Dollars [Member] \| Liquids Production and Commercialization [Member] \| Foreign Exchange Risk [Member]
Foreign exchange risk [Abstract]
Percentage of revenue	87.00%	87.00%	87.00%
Argentine Pesos [Member] \| Liquids Production and Commercialization [Member] \| Foreign Exchange Risk [Member]
Foreign exchange risk [Abstract]
Percentage of revenue	35.00%	37.00%	50.00%
Percentage of operating cost	83.00%	81.00%	80.00%

The percentage of the entity's revenue. [Refer: Revenue]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 8
-IssueDate 2022-03-24
-Paragraph 34
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2022-en-r&anchor=para_34&doctype=Standard
-URIDate 2022-03-24

+ Details

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

- Definition

The profit (loss) before tax expense or income. [Refer: Profit (loss)]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 8
-IssueDate 2022-03-24
-Paragraph 28
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2022-en-r&anchor=para_28_b&doctype=Standard
-URIDate 2022-03-24

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 8
-IssueDate 2022-03-24
-Paragraph 23
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2022-en-r&anchor=para_23&doctype=Standard
-URIDate 2022-03-24

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 5
-IssueDate 2022-03-24
-Paragraph 33
-Subparagraph b
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2022-en-r&anchor=para_33_b_i&doctype=Standard
-URIDate 2022-03-24

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 103
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_103&doctype=Standard
-URIDate 2022-03-24

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 102
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_102&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_ProfitLossBeforeTax
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The average life for refinanced new external indebtedness.

+ References

No definition available.

+ Details

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

- References

No definition available.

+ Details

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

- Definition

The number of working days to settle commitment in foreign exchange market.

+ References

No definition available.

+ Details

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

- Definition

Refers to the percentage increase (decrease) in US dollar rate against argentine peso.

+ References

No definition available.

+ Details

Name:	tgs_PercentageAppreciationDepreciationRateOfUSDollarAgainstArgentinePeso
Namespace Prefix:	tgs_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Refers to the percentage of funds denominated in US dollars to mitigate the foreign exchange risk.

+ References

No definition available.

+ Details

Name:	tgs_PercentageOfFundsDenominatedInUSDollars
Namespace Prefix:	tgs_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of all operating expenses.

+ References

No definition available.

+ Details

Name:	tgs_PercentageOfOperatingCost
Namespace Prefix:	tgs_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of principal amount maturing in period indicated.

+ References

No definition available.

+ Details

Name:	tgs_PercentageOfPrincipalAmountMaturingInPeriod
Namespace Prefix:	tgs_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	ifrs-full_TypesOfRisksAxis=ifrs-full_CurrencyRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CurrencyAxis=currency_USD
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_SegmentsAxis=tgs_ProductionAndCommercializationOfLiquidsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CurrencyAxis=currency_ARS
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: