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v3.23.1

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

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- References No definition available. + Details
Name: | tgs_EconomicActivityPovertyAndUnemploymentAbstract
Namespace Prefix: | tgs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | tgs_EconomicContextAbstract
Namespace Prefix: | tgs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | tgs_ExchangeMarketAbstract
Namespace Prefix: | tgs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition The foreign exchange rate gap within the entity's country of origin related to currency outflows that persistently exceed currency inflows. + References No definition available. + Details
Name: | tgs_ForeignExchangeRateGap
Namespace Prefix: | tgs_
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. + References No definition available. + Details
Name: | tgs_IncreaseDecreaseInForeignExchangeRate
Namespace Prefix: | tgs_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | tgs_MonetaryImbalanceAndInflationAbstract
Namespace Prefix: | tgs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The percentage of increase (decrease) of economic activity during the period. + References No definition available. + Details
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Namespace Prefix: | tgs_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage of the population living in poverty. + References No definition available. + Details
Name: | tgs_PercentageOfPopulationInPoverty
Namespace Prefix: | tgs_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition The percentage of shortfall in government income compared to government spending calculated as a percentage of gross domestic product. + References No definition available. + Details
Name: | tgs_PercentageOfPrimaryFiscalDeficit
Namespace Prefix: | tgs_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- 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
Namespace Prefix: | tgs_
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Balance Type: | na
Period Type: | instant

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- 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
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Namespace Prefix: | tgs_
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- Definition The number of participants involved in a Survey of Market Expectations. + References No definition available. + Details
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Namespace Prefix: | tgs_
Data Type: | xbrli:integerItemType
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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
Namespace Prefix: | tgs_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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

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- Details
Name: | srt_CurrencyAxis=tgs_CurrencyOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |