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BUSINESS DESCRIPTION, Economic Context (Details)		3 Months Ended	12 Months Ended
	Nov. 30, 2022	Sep. 30, 2022	Dec. 31, 2022 Participants $ / shares	Dec. 31, 2021
Economic context [Abstract]
Cumulative inflation rate			94.80%
Economic activity, poverty and unemployment [Abstract]
Percentage increase (decrease) of economic activity	(2.60%)			10.40%
Unemployment rate		7.10%
Percentage of population living in poverty			36.50%
Fiscal imbalance [Abstract]
Percentage of primary fiscal deficit			2.40%	4.20%
Monetary imbalance and inflation [Abstract]
Survey of Market Expectations, number of participants | Participants			37
Expected inflation rate			110.00%
Exchange Market [Abstract]
Purchase price of foreign currency for buyer (in dollars per share)			$ 176.96
Purchase price of foreign currency for seller (in dollars per share)			$ 177.16
U.S. Dollars [Member]
Exchange Market [Abstract]
Depreciation of peso against U.S. dollar			72.00%
Alternative Currencies [Member]
Exchange Market [Abstract]
Exchange rate gap			100.00%

X

- Definition

The cumulative rate of inflation per the Consumer Price Index ("CPI").

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

Name:	tgs_EconomicActivityPovertyAndUnemploymentAbstract
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X

- References

No definition available.

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Name:	tgs_EconomicContextAbstract
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X

- References

No definition available.

+ Details

Name:	tgs_ExchangeMarketAbstract
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X

- Definition

The expected inflation rate according to the latest Survey of Market Expectations ("REM") carried out by the BCRA.

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

Name:	tgs_FiscalImbalanceAbstract
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X

- Definition

The foreign exchange rate gap within the entity's country of origin related to currency outflows that persistently exceed currency inflows.

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No definition available.

+ Details

Name:	tgs_ForeignExchangeRateGap
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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The total percentage increase or (decrease) in the exchange rate used by the entity. Exchange rate is the ratio of exchange for two currencies.

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No definition available.

+ Details

Name:	tgs_IncreaseDecreaseInForeignExchangeRate
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Data Type:	dtr-types:percentItemType
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X

- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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Period Type:	duration

X

- Definition

The percentage of increase (decrease) of economic activity during the period.

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No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
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X

- Definition

The percentage of the population living in poverty.

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No definition available.

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Name:	tgs_PercentageOfPopulationInPoverty
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X

- Definition

The percentage of shortfall in government income compared to government spending calculated as a percentage of gross domestic product.

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No definition available.

+ Details

Name:	tgs_PercentageOfPrimaryFiscalDeficit
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Period Type:	duration

X

- Definition

The purchase price for buyers to maintain a very restrictive exchange control for the purchase of foreign currency in the single free market for foreign exchange ("MULC").

+ References

No definition available.

+ Details

Name:	tgs_PurchasePriceOfForeignCurrencyForBuyers
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Data Type:	dtr-types:perShareItemType
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Period Type:	instant

X

- Definition

The purchase price of foreign currency for sellers to maintain a very restrictive exchange control for the purchase of foreign currency in the single free market for foreign exchange ("MULC").

+ References

No definition available.

+ Details

Name:	tgs_PurchasePriceOfForeignCurrencyForSellers
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Balance Type:	na
Period Type:	instant

X

- Definition

The number of participants involved in a Survey of Market Expectations.

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No definition available.

+ Details

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- Definition

The number of unemployed people as a percentage of the labor force.

+ References

No definition available.

+ Details

Name:	tgs_UnemploymentRate
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- Details

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- Details

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